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  1. Rio Grande Wetbacks: Mexican Migrant Workers.

    ERIC Educational Resources Information Center

    Norquest, Carrol

    Farmers in the Lower Rio Grande Valley of Texas saw a rise of wetback labor in the 1930s and 40s. The wetback laborers were Mexicans who had crossed the Rio Grande and were in the United States illegally to work. Carrol Norquest, a farmer in the Lower Rio Grande Valley, employed wetbacks regularly. In this book, Mr. Norquest writes about the…

  2. Rio Grande Wetbacks: Mexican Migrant Workers.

    ERIC Educational Resources Information Center

    Norquest, Carrol

    Farmers in the Lower Rio Grande Valley of Texas saw a rise of wetback labor in the 1930s and 40s. The wetback laborers were Mexicans who had crossed the Rio Grande and were in the United States illegally to work. Carrol Norquest, a farmer in the Lower Rio Grande Valley, employed wetbacks regularly. In this book, Mr. Norquest writes about the…

  3. Chapter 3. Rio Grande cutthroat trout

    Treesearch

    John N. Rinne

    1995-01-01

    The Rio Grande cutthroat trout was once widespread in the upper Rio Grande and Canadian River basins of northern New Mexico and south-central Colorado and in the headwaters of the Pecos River, New Mexico (Sublette et al. 1990; Behnke 1992). It may have occurred as far south as Chihuahua, Mexico (Behnke 1992). Currently, it is restricted primarily to headwater...

  4. Hyacinths Choke the Rio Grande

    NASA Technical Reports Server (NTRS)

    2002-01-01

    These images acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), flying aboard NASA's Terra satellite, demonstrate the potential of satellite-based remote sensors to monitor infestations of non-native plant species. These images show the vigorous growth of water hyacinths along a stretch of the Rio Grande River in Texas. The infestation had grown so dense in some places it was impeding the flow of water and rendered the river impassible for boats. The hyacinth is an aquatic weed native to South America. The plant is exotic looking and, when it blooms, the hyacinth produces a pretty purple flower, which is why it was introduced into North America. However, it has the capacity to grow and spread at astonishing rates so that in the wild it can completely clog the flow of rivers and waterways in a matter of days or weeks. The top image was acquired on March 30, 2002, and the bottom image on May 9, 2002. In the near-infrared region of the spectrum, photosynthetically-active vegetation is highly reflective. Consequently, vegetation appears bright to the near-infrared sensors aboard ASTER; and water, which absorbs near-infrared radiation, appears dark. In these false-color images produced from the sensor data, healthy vegetation is shown as bright red while water is blue or black. Notice a water hyacinth infestation is already apparent on March 30 near the center of the image. By May 9, the hyacinth population has exploded to cover more than half the river in the scene. Satellite-based remote sensors can enable scientists to monitor large areas of infestation like this one rather quickly and efficiently, which is particularly useful for regions that are difficult to reach from on the ground. (For more details, click to read Showdown in the Rio Grande.) Images courtesy Terrametrics; Data provided by the ASTER Science Team

  5. Hyacinths Choke the Rio Grande

    NASA Technical Reports Server (NTRS)

    2002-01-01

    These images acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), flying aboard NASA's Terra satellite, demonstrate the potential of satellite-based remote sensors to monitor infestations of non-native plant species. These images show the vigorous growth of water hyacinths along a stretch of the Rio Grande River in Texas. The infestation had grown so dense in some places it was impeding the flow of water and rendered the river impassible for boats. The hyacinth is an aquatic weed native to South America. The plant is exotic looking and, when it blooms, the hyacinth produces a pretty purple flower, which is why it was introduced into North America. However, it has the capacity to grow and spread at astonishing rates so that in the wild it can completely clog the flow of rivers and waterways in a matter of days or weeks. The top image was acquired on March 30, 2002, and the bottom image on May 9, 2002. In the near-infrared region of the spectrum, photosynthetically-active vegetation is highly reflective. Consequently, vegetation appears bright to the near-infrared sensors aboard ASTER; and water, which absorbs near-infrared radiation, appears dark. In these false-color images produced from the sensor data, healthy vegetation is shown as bright red while water is blue or black. Notice a water hyacinth infestation is already apparent on March 30 near the center of the image. By May 9, the hyacinth population has exploded to cover more than half the river in the scene. Satellite-based remote sensors can enable scientists to monitor large areas of infestation like this one rather quickly and efficiently, which is particularly useful for regions that are difficult to reach from on the ground. (For more details, click to read Showdown in the Rio Grande.) Images courtesy Terrametrics; Data provided by the ASTER Science Team

  6. Distribution of Rio Grande cutthroat trout and its co-occurrence with the Rio Grande sucker and Rio Grande chub on the Carson and Santa Fe National Forests

    Treesearch

    Bob Calamusso; John N. Rinne

    1996-01-01

    Studies were initiated in June, 1994 by the USDA Forest Service, Rocky Mountain Forest and Range Experiment Station to update knowledge on the distribution of the Rio Grande cutthroat trout a Forest Service Sensitive Species, and its co-occurrence with two native cypriniforms, Rio Grande sucker and Rio Grande Chub. The Rio Grande sucker IS listed as endangered by the...

  7. Middle Rio Grande/Albuquerque (New Mexico)

    EPA Pesticide Factsheets

    Middle Rio Grande/Albuquerque (New Mexico) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.

  8. Rio Grande sediment study -- Supply and transport

    SciTech Connect

    Diniz, E.; Eidson, D.; Bourgeois, M.

    1995-12-31

    The 1992 New Mexico State Legislature directed the Interstate Stream Commission (ISC) to study the feasibility of clearing and deepening the channel of the Rio Grande between Albuquerque and Elephant Butte to improve water conveyance and water conservation. The ISC requested the US Army Corps of Engineers-Albuquerque District (COE) to undertake this study under the Planning Assistance to States Program. The study was divided into two phases. Phase 1 consisted of an analysis of the sediment contribution to the Rio grande from the tributaries and an evaluation of the existing US Geological Survey (USGS) sediment gage data. Phase 2 will be an analysis, through the use of an HEC-6, Scour and Deposition in Rivers and Reservoirs, computer model, to determine the long-term performance of any Rio Grande channel improvements. This narrative presents the Phase 1 methods and results.

  9. Panel - Rio Grande restoration: Future directions

    Treesearch

    Deborah M. Finch; Pete V. Domenici; Jeffrey. C. Whitney; Steve Harris; Brian Shields; Clifford S. Crawford

    1996-01-01

    The purpose of this panel was to discuss historical and current changes to the Rio Grande system, focusing on the middle Basin, and to present and review different individual, organizational, and political perspectives on the future of the system. Invitations were made to panelists based on their past and current interests and activities pertaining to restoration of...

  10. Middle Rio Grande Basin Research Report 2008

    Treesearch

    Deborah M. Finch; Catherine Dold

    2008-01-01

    An ecosystem is rarely static. A natural system composed of plants, animals, and microorganisms interacting with an area's physical factors, an ecosystem is always fluctuating and evolving. But sometimes, often at the hands of humans, ecosystems change too much. Such is the case with many of the ecosystems of the Middle Rio Grande Basin of New Mexico.

  11. Salinity management in the Rio Grande Bosque

    Treesearch

    Jan M. H. Hendrickx; J. Bruce J. Harrison; Jelle Beekma; Graciela Rodriguez-Marin

    1999-01-01

    This paper discusses management options for salinity control in the Rio Grande Bosque. First, salt sources are identified and quantified. Capillary rise of ground water is the most important cause for soil salinization in the bosque. Next, a riparian salt balance is presented to explain the different mechanisms for soil salinization. Finally, the advantages and...

  12. Future of the Middle Rio Grande

    Treesearch

    Barbara A. Coe

    1999-01-01

    Because decisions made today about the Middle Rio Grande will influence future conditions, symposium participants - the stakeholders - collaborated in a final session to plan improvements for the watershed and river corridor. The result included several action plans focusing on desired future conditions and actions to achieve them.

  13. Rio Grande rift: problems and perspectives

    SciTech Connect

    Baldridge, W.S.; Olsen, K.H.; Callender, J.F.

    1984-01-01

    Topics and ideas addressed include: (1) the regional extent of the Rio Grande rift; (2) the structure of the crust and upper mantle; (3) whether the evidence for an axile dike in the lower crust is compelling; (4) the nature of faulting and extension in the crust; and (5) the structural and magmatic development of the rift. 88 references, 5 figures.

  14. 77 FR 51966 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-28

    ... Forest Service Upper Rio Grande Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Upper Rio Grande Resource Advisory Committee will meet in South Fork...Category=Upper+Rio+Grande+ . Persons who wish to bring related matters to the attention of the Committee...

  15. Hybrid origin of Rio Grande rift hawaiites

    NASA Astrophysics Data System (ADS)

    Wolff, J. A.; Heikoop, C. E.; Ellisor, R.

    2000-03-01

    Weakly alkaline lavas erupted in the Pliocene Cerros del Rio and El Alto volcanic fields in the Española basin of the Rio Grande rift have the unusual trace element signature of approximately chondritic K/Nb combined with high La/Nb and Th/Nb. These lavas have previously been interpreted as the products of modified arc-source like mantle, ultimately related to subduction of the Farallon plate beneath North America during the early Cenozoic. We show that the chemical signature can be produced by contamination of strongly silica undersaturated K-depleted magmas by continental crust, and that there is no need to invoke a subduction component in Rio Grande rift magma genesis. The same signature appears among voluminous Miocene lavas of the Jemez Mountains volcanic field. Hence, while nephelinite and basanite magmas resembling oceanic island basalts have been recognized as trace components in Rio Grande rift magmatism, our results may require a drastic upward revision of their volumetric significance in the northern rift through late Miocene-Pliocene time.

  16. Upper Rio Grande Simulation Model (URGSIM)

    SciTech Connect

    Roach, Jesse; & Tidwell, Vincent

    2010-08-05

    URGSIM estimates the location of surface water and groundwater resources in the upper Rio Grande Basin between the Colorado-New Mexico state line, and Caballo Reservoir from 1975 - 2045. It is a mass balance hydrology model of the Upper Rio Grande surface water, groundwater, and water demand systems which runs at a monthly timestep from 1975-1999 in calibration mode, 2000 – 2004 in validation mode, and 2005 – 2045 in scenario analysis mode.

  17. Upper Rio Grande Simulation Model (URGSIM)

    SciTech Connect

    Roach, Jesse; & Tidwell, Vincent

    2010-08-05

    URGSIM estimates the location of surface water and groundwater resources in the upper Rio Grande Basin between the Colorado-New Mexico state line, and Caballo Reservoir from 1975 - 2045. It is a mass balance hydrology model of the Upper Rio Grande surface water, groundwater, and water demand systems which runs at a monthly timestep from 1975-1999 in calibration mode, 2000 – 2004 in validation mode, and 2005 – 2045 in scenario analysis mode.

  18. Rio Grande pipeline introduces LPG to Mexico

    SciTech Connect

    1997-06-01

    Rio Grande Pipeline, a joint venture between Mid-America Pipeline Co., Amoco Pipeline Co. and Navajo Pipeline Co., has broken new ground in the energy industry as the first LPG pipeline to cross the US-Mexico border. Plans for the project were announced in November 1995 and first deliveries started three months ago on March 21, 1997. The 8-inch, 265-mile pipeline originates near Odessa, TX, where it receives an 85-15 propane-butane mix via a connection to Mid-America Pipeline. From Odessa, product moves west through the Texas desert and crosses the Rio Grande River about 15 miles south of El Paso near Clint, TX and extends 20 miles into Mexico. Capacity of the line is 24,000 bpd and it has been averaging about 22,000 bpd since line-fill. All in all, it sounded like a reasonably feasible, routine project. But perceptions can be deceiving, or at least misleading. In other words, the project can be summarized as follows: one river, two cultures and a world of difference. The official border crossing for pipeline construction took place on Dec. 2, 1996, with a directional drill under the Rio Grande River, but in actuality, the joint venture partners were continually bridging differences in language, laws, customs and norms with Pemex and contracted workers from Mexico.

  19. Raptor Use of the Rio Grande Gorge

    SciTech Connect

    Ponton, David A.

    2015-03-20

    The Rio Grande Gorge is a 115 km long river canyon located in Southern Colorado (15 km) and Northern New Mexico (100 km). The majority of the canyon is under the administration of the Bureau of Land Management {BLM), and 77 km of the canyon south of the Colorado/New Mexico border are designated Wild River under the National Wild and Scenic Rivers Act of 1968. Visits I have made to the Rio Grande Gorge over the past 15 .years disclosed some raptor utilization. As the Snake River Birds of Prey Natural Area gained publicity, its similarity to the Rio Grande Gorge became obvious, and I was intrigued by the possibility of a high raptor nesting density in the Gorge. A survey in 1979 of 20 km of the northern end of the canyon revealed a moderately high density of red-tailed hawks and prairie falcons. With the encouragement of that partial survey, and a need to assess the impact of river-running on nesting birds of prey, I made a more comprehensive survey in 1980. The results of my surveys, along with those of a 1978 helicopter survey by the BLM, are presented in this report, as well as general characterization of the area, winter use by raptors, and an assessment of factors influencing the raptor population.

  20. Watershed/river channel linkages: The Upper Rio Grande Basin and the Middle Rio Grande Bosque

    Treesearch

    Jeffrey C. Whitney

    1999-01-01

    There continues to be a great deal of interest and discussion surrounding the demands of water management and allocation and the relationship to ecological integrity of the Rio Grande riparian ecosystem. Current river management too often fails to consider the importance of natural variability of flows. What is consistently overlooked is the relationship of a stream...

  1. Extension in the Rio Grande rift.

    USGS Publications Warehouse

    Cordell, L.

    1982-01-01

    A positive gravity anomaly along the axis of the Rio Grande rift reflects a volume of anomalous mass added at the base of the crust and intruded into the crust. Part of this volume can be associated with vertical uplift of the crust. The remainder of this anomalous volume, plus the volume of surficial graben fill, can be associated with horizontal crustal extension. The volume of crustal uplift in the Rio Grande rift is unknown, but this term can be eliminated by means of an independent equation provided by assumption of generalized isostatic equilibrium. The volume and mass equations combined provide a solution for extension of the crust in terms of the following parameters: total anomalous mass deficiency in the mantle lithosphere, total anomalous mass excess in the crust and its density contrast, total anomalous mass deficiency of surficial graben fill and its density contrast, and the volume of material eroded from the uplift. Using standard density estimates and masses determined by equivalent-source modeling of gravity profiles, I obtained 1-km extension at 37oN (Colorado-New Mexico border), 13- km extension at 35oN (Albuquerque, New Mexico), and 24-km extension at 33oN in S New Mexico.-Author

  2. Plants, arthropods, and birds of the Rio Grande [chapter 7

    Treesearch

    Deborah M. Finch; Gale L. Wolters; Wang Yong; Mary Jean Mund

    1995-01-01

    Human populations have increased dramatically along the Rio Grande since European settlement. Human use of water for irrigation and consumption, and human use of land for agriculture, urban centers, livestock grazing, and recreation have changed Rio Grande ecosystems by altering flood cycles, channel geomorphology, upslope processes, and water quality and quantity....

  3. Research of the Rio Grande Ecosystem Management Program

    Treesearch

    Deborah M. Finch

    2000-01-01

    This paper describes the mission, objectives, and preliminary results of the Middle Rio Grande Ecosystem Management Research Program managed at the Rocky Mountain Research Station's Albuquerque laboratory. This program was initiated in 1994 to address growing pressures to effectively manage the limited resources of the middle Rio Grande Basin. The program is...

  4. 75 FR 55539 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Upper Rio Grande Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Upper Rio Grande Resource Advisory Committee will meet in South Fork...

  5. 76 FR 15290 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-21

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Upper Rio Grande Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Upper Rio Grande Resource Advisory Committee will meet in Monte Vista...

  6. 75 FR 32359 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Upper Rio Grande Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Upper Rio Grande Resource Advisory Committee will meet in South Fork...

  7. 76 FR 44302 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-25

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Upper Rio Grande Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Upper Rio Grande Resource Advisory Committee will meet in Monte Vista...

  8. Simulation of Rio Grande floodplain inundation Using FLO-2D

    Treesearch

    J. S. O' Brien; W. T. Fullerton

    1999-01-01

    Spring floodplain inundation is important to the natural functions of the Rio Grande bosque biological community including cottonwood tree germination and recruitment. To predict floodplain inundation, a two-dimensional flood routing model FLO-2D will be applied to various reaches of the Rio Grande. FLO-2D will assess overbank flooding in terms of the area of...

  9. The Middle Rio Grande: Its ecology and management

    Treesearch

    Jeffery C Whitney

    1996-01-01

    The Middle Rio Grande (MRG) riparian forest, or "bosque", represents the largest cottonwood gallery riparian forest in the southwestern United States. This reach of the Rio Grande extends from Cochiti Dam downstream 260 Km to San Marcial, New Mexico. It constitutes 8% of the river’s total length and 34% of if its length in New Mexico. The valley traverses...

  10. River bar vegetation mowing response in the Middle Rio Grande

    Treesearch

    Esteban Muldavin; Elizabeth Milford; Yvonne Chauvin

    1999-01-01

    The Bureau of Reclamation routinely mows vegetation on side bars along the Rio Grande to assist with river flow management. To address the question of how such mowing affects vegetation composition and structure, three bars in the middle Rio Grande near Albuquerque, New Mexico were selected in 1994 for an experimental mowing program. Three 50-foot-wide strips on each...

  11. Rio Grande Basin Consortium: Mission, goals, and activities

    Treesearch

    Deborah A. Potter; Deborah M. Finch

    1996-01-01

    The Rio Grande Basin Consortium (RGBC) serves as a networking group and clearinghouse for scientific information pertaining to the Rio Grande Basin. Its membership consists of natural and social scientists from New Mexico’s three research universities, administrators, and resource managers from federal, state, and local governmental agencies, members of community and...

  12. Feeding preference of the Rio Grande silvery minnow (Hybognathus amarus)

    Treesearch

    Hugo A. Magana

    2009-01-01

    The Rio Grande silvery minnow (Hybognathus amarus) was historically the most abundant fish in the Rio Grande Basin. However, populations have been declining to the point of being listed under the Endangered Species Act. Potential causes for the decline have been studied, yet little attention has been paid to food resources. This study had three...

  13. Population trends of migratory landbirds along the Middle Rio Grande

    Treesearch

    Wang Yong; Deborah M. Finch

    1997-01-01

    Using standardized mist-netting capture data from the Rio Grande Nature Center, Albuquerque, New Mexico from 1985-1994, and Breeding Bird Survey data from New Mexico and United States from 1980-1994, we compared local, regional, and national population trends of landbird species that migrate along the middle Rio Grande in fall. Evaluations of relationships among...

  14. The seismic history of the Rio Grande Rift

    USGS Publications Warehouse

    Hoffman, J.P.

    1975-01-01

    The Rio Grande Rift, one of the major geologic structures of the Southwest, cuts through the center of New Mexico from north to south. The rift is also referred to as the Rio Grande Trench and as the Rio Grande Trough. It extends from the northern end of the San Luis Valley in Colorado southward 725 kilometres along the course of the Rio Grande River through New Mexico to near El Paso, Tex. The Rio Grande Rift is not a single trough but a series of north-trending basins arranged en echelon and separated by narrow constrictions or channels. The rift follows the western flank of the southern Rocky Mountains and apparently was formed at the same time as the moutains. 

  15. Albuquerque/Middle Rio Grande Urban Waters Viewer

    EPA Pesticide Factsheets

    These data have been compiled in support of the Middle Rio Grande/Albuquerque Urban Waters Partnership for the region including Albuquerque, New Mexico.The Middle Rio Grande/Albuquerque Urban Waters Federal Partnership is co-chaired by the U.S. Dept. of Housing and Urban Development and the U.S. Environmental Protection Agency. There are also a number of other federal agencies engaged in projects with Tribal, State, and local officials, and community stakeholders. Like many western river ecosystems, the Middle Rio Grande faces numerous challenges in balancing competing needs within a finite water supply and other resource constrains. Historical practices by our ancestors and immigrants to the Middle Rio Grande have established the conditions that we have inherited. Long-term drought exacerbated by climate change is changing conditions that affect natural and human communities as we strive to improve our precious Rio Grande.The Middle Rio Grande/Albuquerque Urban Waters Federal Partnership will reconnect our urban communities, particularly those that are overburdened or economically distressed, with the waterway by improving coordination among federal agencies and collaborating with community-led revitalization efforts. Our projects will improve our community water systems and promote their economic, environmental and social benefits. Specifically, the Middle Rio Grande/Albuquerque Urban Waters Federal Partnership will support the development of the Valle de Oro

  16. Links Related to Middle Rio Grande/Albuquerque (New Mexico)

    EPA Pesticide Factsheets

    Middle Rio Grande/Albuquerque (New Mexico) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.

  17. Simulations of Precipitation Variability over the Upper Rio Grande Basin

    SciTech Connect

    Costigan, Keeley R.; Bossert, James E.; Langley, David L.

    1997-12-31

    In this research, we study Albuquerque`s water and how it may be affected by changes in the regional climate, as manifested by variations in Rio Grande water levels. To do this, we rely on the use of coupled atmospheric, runoff, and ground water models. Preliminary work on the project has focused on uncoupled simulations of the aquifer beneath Albuquerque and winter precipitation simulations of the upper Rio Grande Basin. The latter is discussed in this paper.

  18. Thermomechanical models of the Rio Grande rift

    SciTech Connect

    Bridwell, R.J.; Anderson, C.A.

    1980-01-01

    Fully two-dimensional, coupled thermochemical solutions of a continental rift and platform are used to model the crust and mantle structure of a hot, buoyant mantle diapir beneath the Rio Grande rift. The thermomechanical model includes both linear and nonlinear laws of the Weertman type relating shear stress and creep strain rate, viscosity which depends on temperature and pressure, and activation energy, temperature-dependent thermal conductivity, temperature-dependent coefficient of thermal expansion, the Boussinesq approximation for thermal bouyancy, material convection using a stress rate that is invariant to rigid rotations, an elastically deformable crust, and a free surface. The model determines the free surface velocities, solid state flow field in the mantle, and viscosity structure of lithosphere and asthenosphere. Regional topography and crustal heat flow are simulated. A suite of symmetric models, assumes continental geotherms on the right and the successively increasing rift geotherms on the left. These models predict an asthenospheric flow field which transfers cold material laterally toward the rift at > 300 km, hot, buoyant material approx. 200 km wide which ascends vertically at rates of 1 km/my between 175 to 325 km, and spreads laterally away from the rift at the base of the lithosphere. Crustal spreading rates are similar to uplift rates. The lithosphere acts as stiff, elastic cap, damping upward motion through decreased velocities of 1 km/10 my and spreading uplift laterally. A parameter study varying material coefficients for the Weertman flow law suggests asthenospheric viscosities of approx. 10/sup 22/ to 10/sup 23/ poise. Similar studies predict crustal viscosities of approx. 10/sup 25/ poise. The buoyant process of mantle flow narrows and concentrates heat transport beneath the rift, increases upward velocity, and broadly arches the lithosphere. 10 figures, 1 table.

  19. 77 FR 8275 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-14

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as.... SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area...

  20. 77 FR 21584 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as.... SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area...

  1. 76 FR 73657 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-29

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management ] (BLM) Rio Grande Natural Area Commission will meet as.... SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area...

  2. 78 FR 9729 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-11

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated below.... SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area...

  3. Chemical Contamination of the Lower Rio Grande near Laredo, TX

    NASA Astrophysics Data System (ADS)

    Flores, B.; Ren, J.; Krishnamurthy, S.; Belzer, W.

    2006-12-01

    The Rio Grande River stretches over 2000 miles from the southern Rocky Mountains in Colorado to the tip of Texas where the Rio Grande meets the Gulf of Mexico. It is the natural boundary between U.S. and Mexico from El Paso, TX, to Brownsville, TX. The communities along the border heavily rely upon the Rio Grande as a primary source of water for consumption, agricultural uses, supporting wildlife and recreation. For many years the Rio Grande has been polluted with municipal, industrial, agricultural and farming contaminants from both sides of the border. This pollution has led to the extinction or reduction of certain wildlife species as well as affecting the health of the residences along the border. Even though great strides have been made in monitoring the Rio Grande, there has been a lack of intense monitoring data collection for pollutants such as pesticides. Three sampling sites including Manadas Creek, the Rio Grande River at International Bridge I, and USGS monitoring site 08459200 off of Highway 83 were chosen. The water quality parameters focused include temperature, pH, conductivity, dissolve oxygen (DO), salinity, total dissolved solids, nutrients, metals and pesticides. Preliminary results have shown elevated concentration of total phosphorus and ortho-phosphorus in the Manadas Creek site. Organochlorinated pesticides such as heptachlor and 4, 4 DDE were detected at various concentrations at all sites and endrin aldehyde was found at Manadas Creek site. This research has provided more information on the current chemical contamination level of the Rio Grande in the Laredo area.

  4. Vigilando la Calidad del Agua de los Grandes Rios de la Nacion: El Programa NASQAN del Rio Grande (Rio Bravo del Norte)

    USGS Publications Warehouse

    Lurry, Dee L.; Reutter, David C.; Wells, Frank C.; Rivera, M.C.; Munoz, A.

    1998-01-01

    La Oficina del Estudio Geologico de los Estados Unidos (U.S. Geological Survey, 0 USGS) ha monitoreado la calidad del agua de la cuenca del Rio Grande (Rio Bravo del Norte) desde 1995 como parte de la rediseiiada Red Nacional para Contabilizar la Calidad del Agua de los Rios (National Stream Quality Accounting Network, o NASOAN) (Hooper and others, 1997). EI programa NASOAN fue diseiiado para caracterizar las concentraciones y el transporte de sedimento y constituyentes quimicos seleccionados, encontrados en los grandes rios de los Estados Unidos - incluyendo el Misisipi, el Colorado y el Columbia, ademas del Rio Grande. En estas cuatro cuencas, el USGS opera actualmente (1998) una red de 40 puntos de muestreo pertenecientes a NASOAN, con un enfasis en cuantificar el flujo en masa (la cantidad de material que pasa por la estacion, expresado en toneladas por dial para cada constituyente. Aplicacando un enfoque consistente, basado en la cuantificacion de flujos en la cuenca del Rio Grande, el programa NASOAN esta generando la informacion necesaria para identificar fuentes regionales de diversos contaminantes, incluyendo sustancias qui micas agricolas y trazas elementos en la cuenca. EI efecto de las grandes reservas en el Rio Grande se puede observar segun los flujos de constituyentes discurren a 10 largo del rio. EI analisis de los flujos de constituyentes a escala de la cuenca proveera los medios para evaluar la influencia de la actividad humana sobre las condiciones de calidad del agua del Rio Grande.

  5. Traveltime of the Rio Grande in the Middle Rio Grande Basin, New Mexico, Water Years 2003-05

    USGS Publications Warehouse

    Langman, Jeff B.

    2008-01-01

    The quality of water in the Rio Grande is becoming increasingly important as more surface water is proposed for diversion from the river for potable and nonpotable uses. In cooperation with the Albuquerque Bernalillo County Water Utility Authority, the U.S. Geological Survey examined traveltime of the Rio Grande in the Middle Rio Grande Basin to evaluate the potential travel of a conservative solute entrained in the river's streamflow. A flow-pulse analysis was performed to determine traveltimes of a wide range of streamflows in the Rio Grande, to develop traveltime curves for estimating the possible traveltime of a conservative solute in the Rio Grande between Cochiti Dam and Albuquerque, and to evaluate streamflow velocities and dispersion and storage characteristics of the Rio Grande in the entire Middle Rio Grande Basin. A flow-pulse analysis was applied to 12 pulse events recorded during the 2003-05 water years for streamflow-gaging stations between Cochiti Dam and the city of San Acacia. Pulse streamflows ranged from 495 to 5,190 cubic feet per second (ft3/s). Three points of each pulse were tracked as the pulse passed a station - rising-limb leading edge, plateau leading edge, and plateau trailing edge. Most pulses indicated longer traveltimes for each successive point in the pulse. Dispersion and spreading of the pulses decreased with increased streamflow. Decreasing traveltimes were not always consistent with increasing streamflow, particularly for flows less than 1,750 ft3/s, and the relation of traveltime and original pulse streamflow at Cochiti indicated a nonlinear component. Average streamflow velocities decreased by greater than 30 percent from San Felipe to San Acacia. The expected trend of increasing dispersion with downstream travel was not always visible because of other influences on streamflow. With downstream flow, distributions of the pulses became more skewed to the descending limbs, indicating possible short-term storage of a part of the

  6. Introduction to Special Section on the Rio Grande Rift

    NASA Astrophysics Data System (ADS)

    Keller, G. R.

    1986-05-01

    With the aid of a Penrose Conference in 1974 and an international rift conference held in 1978 in Santa Fe, New Mexico, the Rio Grande rift has become widely recognized as a major Cenozoic continental rift zone. As a result of the 1978 Santa Fe meeting, the American Geophysical Union published a special volume of papers concerned with the Rio Grande rift [Riecker, 1979], and the New Mexico Geological Society recently published another volume focused on this rift [Baldridge et al., 1984]. These volumes are a manifestation of the research activity which lead to the formation of the Rio Grande rift consortium whose purpose is to foster rift-related research and communication. This organization has sponsored several special sessions at geological and geophysical meetings and has generally increased the awareness of this important feature.

  7. 77 FR 41798 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-16

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as... hours. SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio...

  8. 77 FR 66479 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-05

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as... hours. SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio...

  9. Guidebook to Rio Grande rift in New Mexico

    USGS Publications Warehouse

    Hawley, J. W.

    1978-01-01

    Discusses the details of geologic features along the rift zone. Included are short papers on topics relative to the overall region. These papers and the road logs are of special interest to any one pursuing further study of the rift. This book is a comprehensive guide to the middle and late Cenozoic geology of the Rio Grande region of Colorado and New Mexico. Though initially used on field trips for the International Symposium on Tectonics and Magmatism of the Rio Grande rift, the guidebook will be useful to anyone interested in the Cenozoic history of the 600-mi-long area extending from central Colorado to El Paso, Texas.

  10. Biology of the Rio Grande border region : a bibliography

    USGS Publications Warehouse

    Johnson, Lynne E.; Jacobs, Linda J.; Papoulias, Diana

    1997-01-01

    This bibliography includes 1,913 references to the literature of the Rio Grande (Rio Bravo del Norte). The specific geographic area covered extends 100 km on either side of the river from Elephant Butte Dam in New Mexico to the Gulf of Mexico. The bibliography focuses on the biological literature, divided into major subject areas, and also includes supporting literature from the physical and environmental sciences.

  11. Rio Grande Valley State Park maintenance, improvements, and developments

    Treesearch

    Tony Barron

    1996-01-01

    Managing the Rio Grande Valley State Park as a valued riparian-wetland area is very important as it encourages conditions for the growth of vegetation. This growth supports a riparian community consisting of various insects, animals, birds, and fish, as well as other wildlife. Human activity in riparian areas has led to historic use patterns causing erosion, re-...

  12. Restoration efforts in the Rio Grande Valley State Park

    Treesearch

    Ondrea C. Linderoth

    1999-01-01

    Restoration techniques for riparian habitats in the Southwest are being widely studied. Efforts for natural regrowth of native species are a high priority. Techniques for native cottonwood (Populus fremontii) regeneration are being investigated in the Rio Grande Valley State Park. Experimentation with flooding of riparian zones using different techniques is beginning...

  13. 77 FR 51967 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-28

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Upper Rio Grande Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Saguache Resource Advisory Committee will meet in Saguache, Colorado. The...

  14. Ecology, diversity, and sustainability of the Middle Rio Grande Basin

    Treesearch

    Deborah M. Finch; Joseph A. Tainter

    1995-01-01

    This book synthesizes existing information on the ecology, diversity, human uses, and research needs of the Middle Rio Grande Basin of New Mexico. Divided into nine chapters, the volume begins with reviews of the environmental history and human cultures in the Basin, followed by an analysis of the influences and problems of climate and water. Later chapters focus on...

  15. Modeling streamflow from snowmelt in the upper Rio Grande

    USDA-ARS?s Scientific Manuscript database

    Annual snowpack in the high elevation snowsheds of the Upper Rio Grande (URG) Basin is a vital source of surface water for irrigated agriculture in New Mexico. Maximum streamflow from the annual snowpack usually occurs in early May for the southernmost snowsheds (e.g., Ojo Caliente) and at the end o...

  16. Migration of the Willow Flycatcher along the Middle Rio Grande

    Treesearch

    Wang Yong; Deborah M. Finch

    1997-01-01

    We studied timing, abundance, subspecies composition, fat stores, stopover length, and habitat use of Willow Flycatchers (Empidonax traillii) during spring and fall stopover along the Middle Rio Grande, New Mexico. Spring migration started in mid-May and lasted about a month. Fall migration started in early-August and also lasted about a month. The most abundant...

  17. ASSESSING TRANSBOUNDARY INFLUENCES IN THE LOWER RIO GRANDE VALLEY

    EPA Science Inventory

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was a U.S.-Mexico Border XXI Program project to assess transboundary air pollution in and near Brownsville, Texas. The study used a three-site air monitoring network very close to the border to capture the d...

  18. Society and Health in the Lower Rio Grande Valley.

    ERIC Educational Resources Information Center

    Madsen, William

    Shedding light on problems of mental health and illness that have baffled public health workers attempting to improve the health and welfare of Mexican Americans living in the lower Rio Grande Valley, this document reports the folk customs, social organization, medical practices, and beliefs of the Mexican American of this area. Chapters describe…

  19. Trial by fire: Restoration of Middle Rio Grande upland ecosystems

    Treesearch

    Samuel R. Loftin

    1999-01-01

    The majority of upland ecosystems (desert scrub, grassland, pinyon-juniper, ponderosa pine and higher elevation conifer forests) in the Middle Rio Grande Basin were historically dependent on periodic fire to maintain their composition, productivity, and distribution. The cultural practices of European man have altered the function, structure, and composition of...

  20. ASSESSING TRANSBOUNDARY INFLUENCES IN THE LOWER RIO GRANDE VALLEY

    EPA Science Inventory

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was a U.S.-Mexico Border XXI Program project to assess transboundary air pollution in and near Brownsville, Texas. The study used a three-site air monitoring network very close to the border to capture the d...

  1. 78 FR 25097 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-29

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated below... business hours. SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the...

  2. 78 FR 69127 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-18

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated below... during normal business hours. SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was...

  3. 78 FR 52783 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-26

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated below... normal business hours. SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established...

  4. 76 FR 39120 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-05

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as... Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2). The nine...

  5. Hydraulic modeling analysis of the Middle Rio Grande - Escondida Reach, New Mexico

    Treesearch

    Amanda K. Larsen

    2007-01-01

    Human influence on the Middle Rio Grande has resulted in major changes throughout the Middle Rio Grande region in central New Mexico, including problems with erosion and sedimentation. Hydraulic modeling analyses have been performed on the Middle Rio Grande to determine changes in channel morphology and other important parameters. Important changes occurring in the...

  6. 76 FR 55416 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-07

    ... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as... business hours. SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the...

  7. Basement structures over Rio Grande Rise from gravity inversion

    NASA Astrophysics Data System (ADS)

    Constantino, Renata; Hackspacker, Peter Christian; Anderson de Souza, Iata; Sousa Lima Costa, Iago

    2017-04-01

    In this study, we show that from satellite-derived gravity field, bathymetry and sediment thicknesses, it is possible to give a 3-D model of the basement over oceanic areas, and for this purpose, we have chosen the Rio Grande Rise, in South Atlantic Ocean, to build a gravity-equivalent basement topography. The advantages of the method applied in this study are manifold: does not depend directly on reflection seismic data; can be applied quickly and with fewer costs for acquiring and interpreting the data; and as the main result, presents the physical surface below the sedimentary layer, which may be different from the acoustic basement. We evaluated the gravity effect of the sediments using the global sediment thickness model of NOAA, fitting a sediment compaction model to observed density values from Deep Sea Drilling Program (DSDP) reports. The Global Relief Model ETOPO1 and constraining data from seismic interpretation on crustal thickness are integrated in the gravity inversion procedure. The modeled Moho depth values vary between 6 to 27 km over the area, being thicker under the Rio Grande Rise and also in the direction of São Paulo Plateau. The inversion for the gravity-equivalent basement topography is applied for a gravity residual data, which is free from the gravity effect of sediments and from the gravity effect of the estimated Moho interface. A description of the basement depth over Rio Grande Rise area is unprecedented in the literature, however, our results could be compared to in situ data, provided by DSDP, and a small difference of only 9 m between our basement depth and leg 516 F was found. Our model shows a rift crossing the entire Rio Grande Rise deeper than previously presented in literature, with depths up to 5 km in the East Rio Grande Rise (ERGR) and deeper in the West Rio Grande Rise (WRGR), reaching 6.4 km. We find several short-wavelengths structures not present in the bathymetry data. Seamounts, guyots and fracture zones are much more

  8. Late archaic settlement systems in the northern Rio Grande

    SciTech Connect

    Vierra, Bradley J.

    2003-01-01

    Last year at these meetings I proposed a possible seasonal transhumance pattern for the Late Archaic in the northern Rio Grande region. This pattern involved the movement of groups from the lowland juniper-savanna grasslands in the early summer, to the upland ponderosa pindmixed conifer forests in the mid to late summer, and then back down to the piiion-juniper woodlands during the fall. The Rio Grande Valley was also used for winter habitation sites. Following on this research, I take the next step by studying the inter-assemblage variability represented in a sample of open-air sites located within each of these vegetation communities. The results indicate that there are significant differences in reduction tactics represented between valley habitation vs., upland campsites, and that these site sites are linked together by obsidian procurement patterns.

  9. Migrant Worker: A Boy from the Rio Grande Valley.

    ERIC Educational Resources Information Center

    Hoyt-Goldsmith, Diane

    Ricky is an 11-year-old migrant worker. During the summer, he travels with his family from their home in Rio Grande City, Texas, to farms farther north. There they spend 10-12 hours a day in the hot sun picking fruit and vegetables and packing the harvest for market. Ricky is not protected by the federal laws that govern the hours, wages, and…

  10. Basement structures over Rio Grande Rise from gravity inversion

    NASA Astrophysics Data System (ADS)

    Constantino, Renata Regina; Hackspacher, Peter Christian; de Souza, Iata Anderson; Lima Costa, Iago Sousa

    2017-04-01

    The basement depth in the Rio Grande Rise (RGR), South Atlantic, is estimated from combining gravity data obtained from satellite altimetry, marine surveys, bathymetry, sediment thickness and crustal thickness information. We formulate a crustal model of the region by inverse gravity modeling. The effect of the sediment layer is evaluated using the global sediment thickness model of National Oceanic and Atmospheric Administration (NOAA) and fitting the sediment compaction model to observed density values from Deep Sea Drilling Project (DSDP) reports. The Global Relief Model ETOPO1 and constraining data from seismic interpretation on crustal thickness are integrated in the inversion process. The modeled Moho depth values vary between 6 and 27 km over the area, being thicker under the RGR and also in the direction of São Paulo Plateau. The inversion for the gravity-equivalent basement topography is applied to gravity residual data, which is free from the gravity effect of sediments and from the gravity effect of the estimated Moho interface. We find several short-wavelengths structures not present in the bathymetry data. Our model shows a rift crossing the entire Rio Grande Rise deeper than previously presented in literature, with depths up to 5 km in the East Rio Grande Rise (ERGR) and deeper in the West Rio Grande Rise (WRGR), reaching 6.4 km. An interesting NS structure that goes from 34°S and extends through de São Paulo Ridge may be related to the South Atlantic Opening and could reveal an extinct spreading center.

  11. Seismic Evidence for an Active Southern Rio Grande Rift

    NASA Astrophysics Data System (ADS)

    Thompson, L. E.; Velasco, A. A.

    2010-12-01

    Competing models exist to explain what caused the Earth’s crust to spread apart 29 million years ago to create a region known today as the Rio Grande Rift (RGR). The RGR extends from central Colorado through New Mexico to northern Mexico, near El Paso. A growing body of evidence shows that geologic activity still occurs in the RGR, with a continuation of faulting, seismicity and a small widening rate. We map of the seismic velocity structure and crustal thickness using data from the Rio Grande Rift Seismic TRAnsect (RISTRA) experiment and the EarthScope Transportable Array (USArray) dataset. In addition to the data we collected from the RISTRA experiment and USArray dataset, we also acquired receiver functions from the EarthScope Automatic Receiver Survey (EARS) website (http://www.earthscope.org/data) and waveform data from the Incorporated Research Institutes for Seismology (IRIS) Data Management Center (DMC). In particular, we requested seismograms from the IRIS DMC database where we acquired teleseismic events from Jan 2000 to Dec 2009. This includes 7,259 seismic events with a minimum magnitude of 5.5 and 106,389 continuous waveforms. This data was preprocessed (merged, rotated) using a program called Standing Order of Data (SOD). We computed receiver functions and receiver function stacks for all data in the Southern Rio Grande Rift (SRGR). We map the crustal thickness, seismic velocity, and mantle structure to better determine the nature of tectonic activity that is presently taking place and further investigate the regional extension of the Southern Rio Grande Rift (SRGR). Here we present results of the crustal and velocity structure using the kriging interpolation scheme and interpret our results in relation to southern RGR deformation and extension.

  12. 27 CFR 9.119 - Middle Rio Grande Valley.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...&SF RR) tracks, approx. 250 feet east of elevation mark 4,889 feet on the Turn, N. Mex. U.S.G.S. map... “Middle Rio Grande Valley” viticultural area are 24 U.S.G.S. Quadrangle (7.5 Minute Series) maps and 1 (15 Minute Series) U.S.G.S. map. They are titled: (1) Abeytas, N. Mex. (1952), revised 1979. (2) Alameda,...

  13. Structure of the southern Rio Grande rift from gravity interpretation

    NASA Technical Reports Server (NTRS)

    Daggett, P. H.; Keller, G. R.; Wen, C.-L.; Morgan, P.

    1986-01-01

    Regional Bouguer gravity anomalies in southern New Mexico have been analyzed by two-dimensional wave number filtering and poly-nomial trend surface analysis of the observed gravity field. A prominent, regional oval-shaped positive gravity anomaly was found to be associated with the southern Rio Grande rift. Computer modeling of three regional gravity profiles suggests that this anomaly is due to crustal thinning beneath the southern Rio Grande rift. These models indicate a 25 to 26-km minimum crustal thickness within the rift and suggest that the rift is underlain by a broad zone of anomalously low-density upper mantle. The southern terminus of the anomalous zone is approximately 50 km southwest of El Paso, Texas. A thinning of the rifted crust of 2-3 km relative to the adjacent Basin and Range province indicates an extension of about 9 percent during the formation of the modern southern Rio Grande rift. This extension estimate is consistent with estimates from other data sources. The crustal thinning and anomalous mantle is thought to result from magmatic activity related to surface volcanism and high heat flow in this area.

  14. The Effects of Water Markets: Evidence from the Rio Grande.

    NASA Astrophysics Data System (ADS)

    Debaere, P.; Li, T.

    2016-12-01

    The Effects of Water Markets: Evidence from the Rio GrandePeter Debaere, University of Virginia Tianshu Li, University of Virginia The Rio Grande water market is one of the oldest water markets in the United States. Employing techniques from the social sciences, we present the first difference-in-difference analysis of the actual impact of water markets on production. We compare from 1954 to 2012 the crop composition in counties in the Rio Grande water market with those in their neighboring control counties before and after the water market was established in 1971. We provide evidence that water markets can facilitate a shift from crops that are on average more to ones that are less water intensive, or, alternatively, from crops that are on average less to ones that are more productive in terms of $ generated per unit of water. In addition, we find that such reallocations are especially prevalent in times of drought. Our findings supports water markets as a tool to manage water more effectively, which is one of the main challenges of an increasingly water-strapped world.

  15. Field Studies of Geothermal Reservoirs Rio Grande Rift, New Mexico

    SciTech Connect

    James C Witcher

    2002-07-30

    The Rio Grande rift provides an excellent field laboratory to study the nature of geothermal systems in an extensional environment. Much of the geologic complexity that is found in the Basin and Range is absent because the rift is located on cratonic crust with a thin and well-characterized Phanerozoic stratigraphy and tectonic history. On the other hand, the Neogene thermo-tectonic history of the rift has many parallels with the Basin and Range to the west. The geology of the southern Rio Grande rift is among the best characterized of any rift system in the world. Also, most geologic maps for the region are rather unique in that detailed analyses of Quaternary stratigraphic and surficial unit are added in concert with the details of bedrock geology. Pleistocene to Holocene entrenchment of the Rio Grande and tributaries unroofs the alteration signatures and permeability attributes of paleo outflow plumes and upflow zones, associated with present-day, but hidden or ''blind,'' hydrothermal systems at Rincon and San Diego Mountain.

  16. Bottom water throughflows at the Rio de Janeiro and Rio Grande Fracture Zones

    NASA Astrophysics Data System (ADS)

    Mercier, Herlé; Weatherly, Georges L.; Arhan, Michel

    2000-05-01

    Bottom water throughflows at the Rio de Janeiro Fracture Zone (22°S) and Rio Grande Fracture Zone (26°S) of the Mid-Atlantic Ridge are identified from hydrographic anomalies observed along 9°W in the Angola Basin. The throughflow water is supplied by a meridional band of cold and fresh water lying against the western flank of the Ridge.

  17. Microbial contamination and chemical toxicity of the Rio Grande

    PubMed Central

    Mendoza, Jose; Botsford, James; Hernandez, Jose; Montoya, Anna; Saenz, Roswitha; Valles, Adrian; Vazquez, Alejandro; Alvarez, Maria

    2004-01-01

    Background The Rio Grande River is the natural boundary between U.S. and Mexico from El Paso, TX to Brownsville, TX. and is one of the major water resources of the area. Agriculture, farming, maquiladora industry, domestic activities, as well as differences in disposal regulations and enforcement increase the contamination potential of water supplies along the border region. Therefore, continuous and accurate assessment of the quality of water supplies is of paramount importance. The objectives of this study were to monitor water quality of the Rio Grande and to determine if any correlations exist between fecal coliforms, E. coli, chemical toxicity as determined by Botsford's assay, H. pylori presence, and environmental parameters. Seven sites along a 112-Km segment of the Rio Grande from Sunland Park, NM to Fort Hancock, TX were sampled on a monthly basis between January 2000 and December 2002. Results The results showed great variability in the number of fecal coliforms, and E. coli on a month-to-month basis. Fecal coliforms ranged between 0–106 CFU/100 ml while E. coli ranged between 6 to > 2419 MPN. H. pylori showed positive detection for all the sites at different times. Toxicity ranged between 0 to 94% of inhibition capacity (IC). Since values above 50% are considered to be toxic, most of the sites displayed significant chemical toxicity at different times of the year. No significant correlations were observed between microbial indicators and chemical toxicity. Conclusion The results of the present study indicate that the 112-Km segment of the Rio Grande river from Sunland Park, NM to Fort Hancock, TX exceeds the standards for contact recreation water on a continuous basis. In addition, the presence of chemical toxicity in most sites along the 112-Km segment indicates that water quality is an area of concern for the bi-national region. The presence of H. pylori adds to the potential health hazards of the Rio Grande. Since no significant correlation was

  18. From the Rio to the Sierra: An environmental history of the Middle Rio Grande Basin

    Treesearch

    Dan Scurlock

    1998-01-01

    Various human groups have greatly affected the processes and evolution of Middle Rio Grande Basin ecosystems, especially riparian zones, from A.D. 1540 to the present. Overgrazing, clear-cutting, irrigation farming, fire suppression, intensive hunting, and introduction of exotic plants have combined with droughts and floods to bring about environmental and associated...

  19. Upper Rio Grande water operations model: A tool for enhanced system management

    Treesearch

    Gail Stockton; D. Michael Roark

    1999-01-01

    The Upper Rio Grande Water Operations Model (URGWOM) under development through a multi-agency effort has demonstrated capability to represent the physical river/reservoir system, to track and account for Rio Grande flows and imported San Juan flows, and to forecast flows at various points in the system. Testing of the Rio Chama portion of the water operations model was...

  20. Seismic anisotropy of the Rio Grande Rift and surrounding regions

    NASA Astrophysics Data System (ADS)

    Pulliam, J.; Rockett, C. V.; Grand, S. P.

    2009-12-01

    The Rio Grande Rift, located between the Colorado Plateau and the Great Plains, has a complex tectonic history comprised of two distinct phases in the Cenozoic era. An early stage of rifting began in the mid-Oligocene (~30 Ma) and lasted until the early Miocene (~18 Ma), followed by a lull and then an apparent reactivation along previous zones of weakness during a separate extension event in the late Miocene (~10 Ma), which continues today. The rift now extends more than 1000 km in length, trending north-south from Southern Colorado through New Mexico and Western Texas and into Chihuahua, Mexico. Structure of the rift is complex due to its multiple events of extension. The LA RISTRA seismic study (1999-2006) deployed broadband seismographs on a transect from Texas to Utah to investigate the structure and processes that control the Rift. Among other results, they found distinct differences in orientation of the fast polarization direction, as measured from SKS splitting, in the three main regions: the Colorado Plateau, the Rio Grande Rift, and the Great Plains. In 2008 71 EarthScope FlexArray stations were installed between Transportable Array stations to form a broad 2D deployment on the eastern flank of the RGR in southeastern New Mexico and western Texas as part of the SIEDCAR (Seismic Investigation of Edge Driven Convection Associated with the Rio Grande Rift) study. SKS splitting measurements from these, as well as from TA stations in the vicinity, show a more complex 2D pattern, but one which conforms with variations in crustal thickness and velocity anomalies in the uppermost mantle. We will report on these measurements and their implications for the style of convection associated with the RGR.

  1. Rio Grande Rift: History of Tectonic Opening and Magmatism

    NASA Astrophysics Data System (ADS)

    van Wijk, J.; Axen, G. J.; Koning, D.

    2016-12-01

    We describe the mid-Miocene to present opening history of the Rio Grande rift from tectonic subsidence patterns, published Quaternary fault activity, and spatial, temporal and geochemical distributions of volcanism. Rift opening was quite fast until 8 Ma, with tectonic subsidence rates comparable to those of the pre-rupture phase of rifted continent margins, but post-8 Ma rates are slower in all studied localities. Integration of age control reveals that a rift-margin unconformity formed between 8.5 and 3.5 Ma, its exact duration varying depending on location. This partly coincides with uplift of the Ogallala formation in the western Great Plains. The widespread extent of the unconformity suggest that the unconformity records a region-wide dynamic uplift event, possibly resulting from mantle upwelling below the region. This is supported by geoid analyses. The unconformity postdates a change in relative plate motion between the North American and Pacific plates, which may account for the post-8 Ma decrease in subsidence rates. Distribution of Quaternary fault activity is concentrated on the border faults in the northern basins where the rift is in a juvenile stage, but distributed on intra-basin faults further south in the rift where the crust is thinned more. Our analyses show that volcanism in the Rio Grande rift has been of mainly basaltic composition since the Miocene; volcanism during early rifting ranged from basalt to rhyolite. Volcanism has not been evenly distributed in the rift, but concentrated in three large volcanic fields that were located outside of the main rift prior to rift opening, and along the Jemez Lineament which crosses the Rio Grande rift, with sporadic volcanic activity elsewhere. The southern portion of the rift has experienced less volcanic activity than the northern rift, perhaps because it is underlain by fast seismic wave velocity upper mantle that may be linked to colder or compositionally different (Farallon plate subduction related

  2. Rio Grande Rift GPS Measurements 2006-2009

    NASA Astrophysics Data System (ADS)

    Berglund, H.; Sheehan, A. F.; Nerem, R.; Choe, J.; Lowry, A. R.; Roy, M.; Blume, F.; Murray, M.

    2009-12-01

    We use three years of measurements from 25 continuous GPS stations across the Rio Grande Rift in New Mexico and Colorado to estimate surface velocities, time series, baselines, and strain rates. The stations are part of the EarthScope Rio Grande Rift experiment, a collaboration between researchers at the University of Colorado at Boulder, the University of New Mexico, and Utah State University. The network includes 5 east-west station profiles transecting the rift, with the southernmost line in southern New Mexico and the northernmost line in northern Colorado. Most of the stations have shallow-drilled braced monuments installed in 2006-2007 and will remain occupied until 2010-2011 or longer. We also estimate station coordinates and velocities from the 2001 and 2008 High Accuracy Reference Network (HARN) campaigns conducted in Colorado. Initial 72-hour observations were made in the summer of 2001 and were repeated in the summer of 2008. Data from regional Plate Boundary Observatory (PBO) GPS stations are included in the processing to increase station density and extend profiles further to the east and west of the Rio Grande Rift. We use GAMIT/GLOBK to process regional sub-networks that share several common sites well determined in the Stable North America Reference Frame (SNARF). These common sites are used as a tie between the sub-networks and SNARF. Our time series from the first three years of the experiment show excellent monument stability. We have solved for baseline distance as a function of time across each of these lines. Despite what might be expected for a rigid Colorado Plateau moving away from rigid North America about a pole near Colorado, we find no evidence of an increase in Rio Grande Rift opening to the south. Our results suggest that steady-state extension across the rift from northern Colorado to southern New Mexico has an upper bound less than ~1 mm/yr with strain rates less than ~20 nanostrain/yr, although these results are still preliminary

  3. Seismic investigation of the southern Rio Grande Rift

    NASA Astrophysics Data System (ADS)

    Thompson, Lennox E.

    Competing models exist to explain what caused the Earth's crust to spread apart 29 million years ago to create a region known today as the Rio Grande Rift (RGR). The RGR extends from central Colorado through New Mexico to northern Mexico, near El Paso. The RGR has different geologic features that distinguish it from most other valleys (e.g., the RGR was not cut by a river nor does a river branch upstream). A growing body of evidence shows that geologic activity still occurs in the RGR, with a continuation of faulting, seismicity and widening at a small rate of about 0.3 mm/yr (Woodward , 1977). We map of the seismic velocity structure and crustal thickness using data from the Rio Grande Rift Seismic TRAnsect (RISTRA) experiment and the EarthScope Transportable Array (USArray) dataset. In addition to the data we collected from the RISTRA experiment and USArray dataset, we also acquired receiver functions from the EarthScope Automatic Receiver Survey (EARS) website (http://www.earthscope.org/data) and waveform data from the Incorporated Research Institutes for Seismology (IRIS) Data Management Center (DMC). We requested seismograms from the IRIS DMC database where we acquired teleseismic events from Jan 2000 to Dec 2009. This includes 7,259 seismic events with a minimum magnitude of 5.5 and 106,389 continuous waveforms. This data was preprocessed (merged, rotated) using a program called Standing Order of Data (SOD). The RISTRA experiment and the USArray were designed to image crust and mantle structures by computing receiver functions for all data in the Southern Rio Grande Rift (SRGR). We map the crustal thickness, seismic velocity, and mantle structure for the sole purpose to better determine the nature of tectonic activity that is presently taking place and further investigate the regional extension of the Southern Rio Grande Rift (SRGR). Here we present preliminary results of the crustal and velocity structure using the kriging interpolation scheme seem stable

  4. Landbird species composition and relative abundance during migration along the Rio Grande

    Treesearch

    Wang Yong; Deborah M. Finch

    1996-01-01

    In this paper, we report species composition and relative abundances of stopover migrants during spring and fall migration along the middle Rio Grande in 1994. We recorded 157 landbird species using mist-netting and survey methods at two sites on the Rio Grande, the Bosque del Apache and the Rio Grande Nature Center. A total of 6,509 birds was captured during spring...

  5. Geomorphology of plutonium in the Northern Rio Grande

    SciTech Connect

    Graf, W.L.

    1993-03-01

    Nearly all of the plutonium in the natural environment of the Northern Rio Grande is associated with soils and sediment, and river processes account for most of the mobility of these materials. A composite regional budget for plutonium based on multi-decadal averages for sediment and plutonium movement shows that 90 percent of the plutonium moving into the system is from atmospheric fallout. The remaining 10 percent is from releases at Los Alamos. Annual variation in plutonium flux and storage exceeds 100 percent. The contribution to the plutonium budget from Los Alamos is associated with relatively coarse sediment which often behaves as bedload in the Rio Grande. Infusion of these materials into the main stream were largest in 1951, 1952, 1957, and 1968. Because of the schedule of delivery of plutonium to Los Alamos for experimentation and weapons manufacturing, the latter two years are probably the most important. Although the Los Alamos contribution to the entire plutonium budget was relatively small, in these four critical years it constituted 71--86 percent of the plutonium in bedload immediately downstream from Otowi.

  6. Female homicide in Rio Grande do Sul, Brazil.

    PubMed

    Leites, Gabriela Tomedi; Meneghel, Stela Nazareth; Hirakata, Vania Noemi

    2014-01-01

    This study aimed to assess the female homicide rate due to aggression in Rio Grande do Sul, Brazil, using this as a "proxy" of femicide. This was an ecological study which correlated the female homicide rate due to aggression in Rio Grande do Sul, according to the 35 microregions defined by the Brazilian Institute of Geography and Statistics (IBGE), with socioeconomic and demographic variables access and health indicators. Pearson's correlation test was performed with the selected variables. After this, multiple linear regressions were performed with variables with p < 0.20. The standardized average of female homicide rate due to aggression in the period from 2003 to 2007 was 3.1 obits per 100 thousand. After multiple regression analysis, the final model included male mortality due to aggression (p = 0.016), the percentage of hospital admissions for alcohol (p = 0.005) and the proportion of ill-defined deaths (p = 0.015). The model have an explanatory power of 39% (adjusted r2 = 0.391). The results are consistent with other studies and indicate a strong relationship between structural violence in society and violence against women, in addition to a higher incidence of female deaths in places with high alcohol hospitalization.

  7. Estimating the Natural Flow Regime of the Rio Grande

    NASA Astrophysics Data System (ADS)

    Blythe, T.; Schmidt, J. C.

    2016-12-01

    The Rio Grande is the fifth longest river in North America and is a critical water supply for millions of people in the U. S. and Mexico. It is essential that both governements understand the magnitude of transformation to the river's flow regime as the countries engage in bi-national discussion about restoring parts of the river's native ecosystem. Previous studies have focused on estimating changes in the statistical properties of floods, but no studies have estimated the magnitude of reduction of the total annual flow nor changes to the annual hydrograph. Significant reductions in flow on the Rio Grande date to the onset of increased irrigation development in the mid-1800s, and human disturbances precede gaging records. Since the late 1800s, the total annual stream flow has been reduced by 98%, and the snowmelt flood has been virtually eliminated. We used a systems analysis approach to analyze available mean daily discharge data throughout the watershed to estimate the natural unregulated flow regime of the northern branch of the Rio Grande upstream from the Rio Conchos. We specifically estimated what would have been the natural hydrograph of the northern branch if there were no diversions of water for irrigation or municipal water supply in each year between 1958 and 2008, based on evaluation of 34 gaging station records. In each year, we reconstructed hydrographs for successive pairs of gages using estimated unaltered flows as upstream inputs, routed flow as if existing impoundments did not exist, and we made corrections for irrigation diversions; we also evaluated historical flood records. We show that the total natural annual flow for the northern branch was more than 50 times greater than the actual measured flow for this 50-year period. The magnitude of the existing diversions has eliminated the ecological cues in which the native ecosystem evolved. This reduction of flow has shifted the river into fine sediment surplus and initiated widespread channel

  8. Pliocene and Quaternary history of the Rio Grande, the axial river of the southern Rio Grande rift, New Mexico, USA

    NASA Astrophysics Data System (ADS)

    Mack, Greg H.; Seager, William R.; Leeder, Mike R.; Perez-Arlucea, Marta; Salyards, Stephen L.

    2006-11-01

    The history of the Rio Grande, the axial river of the southern Rio Grande rift, New Mexico, may be divided into an aggradational phase (˜ 5 to ˜ 0.8 Ma), during which time about 100 m of fluvial sediment was deposited in eight basins, and a degradational phase (˜ 0.8 Ma to present), when the river alternately incised and partially backfilled its basins. Reversal magnetostratigraphy, dated volcanic rocks, and vertebrate biostratigraphy allow correlation of sediment of the aggradational phase with the Gilbert, Gauss, and Matuyama Chrons, while the degradational phase primarily encompasses the Brunhes Chron. Tectonics was the primary control on river behaviour during the aggradational phase. In half grabens, multistorey channel sands were deposited in narrow belts near the footwall uplifts, in response to tilt of the basin floor towards the border fault and smaller footwall catchments and their alluvial fans compared to those of the hanging-wall mountains. In contrast, the river traversed almost the entire width of full grabens, depositing interbedded channel and floodplain sediment with moderately mature palaeosols. Condensed sections dominated by floodplain sediment with very mature palaeosols developed in basins largely abandoned by the river due to preferential tilting of the basin floor, lateral growth or renewal of fault activity, or alternating flow of the river between adjacent basins. The degradational phase was dominated by net basin erosion related to glacial-climate cycles, despite continued activity on many of the basin-bounding faults.

  9. [Temporary workers' perceptions of occupational risks in the port of Rio Grande, Rio Grande do Sul State, Brazil].

    PubMed

    Soares, Jorgana Fernanda de Souza; Cezar-Vaz, Marta Regina; Mendoza-Sassi, Raul Andrés; Almeida, Tabajara Lucas de; Muccillo-Baisch, Ana Luiza; Soares, Maria Cristina Flores; Costa, Valdecir Zavarese da

    2008-06-01

    This was a cross-sectional, descriptive, quantitative study in the port of Rio Grande, Rio Grande do Sul, Brazil, aimed at identifying occupational risk perceptions in a sample of 306 temporary dockworkers. Most temporary dockworkers (93.46%) acknowledged the existence of health risks on the job, independently of schooling (p = 0.44) and job activity (p = 0.47). Risks identified by temporary workers as a whole included falling of suspended objects (8.43 +/- 2.47), noise (8.06 +/- 2.32), and bad weather conditions (8.05 +/- 2.48). Risks that varied significantly between jobs were: noise (p = 0.00), lifting loads manually (p = 0.00), work tools (p = 0,00), insufficient number of work team members (p = 0.03), extra wages based on productivity (p = 0.00), work pace (p = 0.01), working on scaffolding and other high areas (p = 0.00), workers moving on top of cargo (p = 0.00), and ship's ladders and gangways (p = 0.00). The study corroborated that temporary dock work is unhealthy and hazardous, and that the risks affect workers according to the specific jobs they perform.

  10. 75 FR 7625 - Endangered and Threatened Wildlife and Plants; Rio Grande Silvery Minnow (Hybognathus amarus...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-22

    ... (mi)) reach of the Rio Grande River in New Mexico, downstream of Cochiti Dam to the headwaters of Elephant Butte Reservoir. In December 2008, silvery minnows were introduced into the Rio Grande River near Big Bend, Texas, as a nonessential, experimental population under section 10(j) of the ESA (December...

  11. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7.105 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas...

  12. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7.105 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas...

  13. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7.105 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas...

  14. 40 CFR 81.239 - Upper Rio Grande Valley Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Air Quality Control Regions § 81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region. The Upper Rio Grande Valley Intrastate Air Quality Control Region (New Mexico) consists of the... Quality Control Region. 81.239 Section 81.239 Protection of Environment ENVIRONMENTAL PROTECTION...

  15. ASSESSING TRANSBOUNDARY INFLUENCES IN THE LOWER RIO GRANDE VALLEY (COMMUNITY SUMMARY)

    EPA Science Inventory

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was done to determine if movement of air pollutants across the U.S.-Mexico border was occurring in the Lower Rio Grande Valley (hereinafter called "the Valley") and, if so, the extent. The study w...

  16. 33 CFR 80.850 - Brazos River, TX to the Rio Grande, TX.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Brazos River, TX to the Rio Grande, TX. 80.850 Section 80.850 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... to the Rio Grande, TX. (a) Except as otherwise described in this section lines drawn continuing the...

  17. Establishment of Rio Grande cottonwood seedlings using micro-irrigation of xeric flood plain sites

    Treesearch

    David R. Dreesen; Gregory A. Fenchel; Joseph G. Fraser

    1999-01-01

    Flood control, irrigation structures, and flow control practices on the Middle Rio Grande have prevented the deposition of sediments and hydrologic conditions conducive to the germination and establishment of Rio Grande cottonwood (Populus fremontii S. Wats.). The Los Lunas Plant Materials Center has been investigating the use of micro-irrigation systems on xeric flood...

  18. A case for classifying the Rio Grande silvery minnow (Hybognathus amarus) as an omnivore

    Treesearch

    Hugo A. Magana

    2007-01-01

    The Rio Grande has been identified as one of the most endangered rivers in the United States by American Rivers. Water impoundment, water extraction, and point-source pollution have likely contributed to the decline of the federally endangered Rio Grande silvery minnow (Hybognathus amarus). The overall goal of this study was to locate, identify, and...

  19. Bendway weirs: Could they create habitat for the endangered Rio Grande silvery minnow

    Treesearch

    Kristoph-Dietrich Kinzli; Christopher A. Myrick

    2009-01-01

    Rehabilitation of the Middle Rio Grande in central New Mexico has become necessary to mitigate the effects of over a century of water and land development. The primary driving force behind rehabilitation efforts is the federally endangered Rio Grande silvery minnow (Hybognathus amarus). Bendway weirs, erosion control and channel-stabilization...

  20. ASSESSING TRANSBOUNDARY INFLUENCES IN THE LOWER RIO GRANDE VALLEY (COMMUNITY SUMMARY)

    EPA Science Inventory

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was done to determine if movement of air pollutants across the U.S.-Mexico border was occurring in the Lower Rio Grande Valley (hereinafter called "the Valley") and, if so, the extent. The study w...

  1. Basic Education in the Lower Rio Grande Valley: Human Capital Development or a Colonial System?

    ERIC Educational Resources Information Center

    Lynch, Patrick D.

    This report describes economic, social, and political characteristics of the lower Rio Grande Valley with implications for the educational system, and presents preliminary findings on how south Texas schools are integrating new immigrant Mexican students. The lower Rio Grande Valley comprises four Texas counties and northern Tamaulipas, Mexico.…

  2. Landbird migration in riparian habitats of the Middle Rio Grande: A case study

    Treesearch

    Deborah M. Finch; Wang Yang

    2000-01-01

    Growing human populations and rapid ecological changes threaten the sustainability of the middle Rio Grande, a river corridor important to numerous species of wintering, breeding, and migrating waterfowl, shorebirds, and songbirds. We review the vegetational and human history of the middle Rio Grande, substantiate the importance of this system to landbirds in migration...

  3. Groundwater convection model for Rio Grande rift geothermal resources

    SciTech Connect

    Morgan, P.; Harder, V.; Swanberg, C.A.; Daggett, P.H.; Ruscetta, C.A.; Foley, D.

    1981-05-01

    It has been proposed that forced convection, driven by normal groundwater flow through the interconnected basins of the Rio Grande rift is the primary source mechanism for the numerous geothermal anomalies along the rift. A test of this concept using an analytical model indicates that significant forced convection must occur in the basins even if permeabilities are as low as 50-200 millidarcies at a depth of 2 km. Where groundwater flow is constricted at the discharge areas of the basins forced convection can locally increase the gradient to a level where free convection also occurs, generating surface heat flow anomalies 5-15 times background. A compilation of groundwater data for the rift basins shows a strong correlation between constrictions in groundwater flow and hot springs and geothermal anomalies, giving strong circumstantial support to the convection model.

  4. Bryozoans from rio grande do sul continental shelf, southern Brazil.

    PubMed

    Ramalho, Laís V; Calliari, Lauro

    2015-05-06

    The continental shelf of Rio Grande do Sul (RS) is predominantly composed of unconsolidated sediments with a few hard substrates represented principally by beachrock. In this area there are elongate deposits of shell gravel material which are interpreted as indicators of the palaeo-shorelines. These Pleistocene deposits are overlapped by Holocene sediments (Recent), but are exposed during erosive events caused by extra-tropical cyclones, which provide the mixture of both sediments mainly during autumn and winter. The few studies on bryozoans made in this area previously recorded seven species, one fossil and the other six from Recent fluvial and marine environments. The aim of the present study was to describe the eight most abundant bryozoan species that occur in the inner RS shelf. Of these, four are new records for RS State (Arachnopusia aff. pusae, Hippomonavella brasiliensis, Turbicellepora pourtalesi, and Lifuella gorgonensis), and the other four are new to science (Chaperia taylori, Micropora nodimagna, Cellaria riograndensis, and Exochella moyani).

  5. Climate Change Impacts in the Upper Rio Grande Catchment

    NASA Astrophysics Data System (ADS)

    Heikkila, T.; Siegfried, T. U.; Sellars, S. L.; Schlager, E.

    2010-12-01

    In the US Southwest, evidence of increased future drought severity and duration in the context of climate change has been detected. Considering the already difficult water distribution and allocation strategies within the region, we are investigating the Costilla Creek, a tributary to the Rio Grande. The catchment is located in Costilla county in Colorado from where on runoff is crossing boundaries between Colorado and New Mexico three times before its confluence with the Rio Grande in New Mexico. Water allocation is governed by an interstate compact between Colorado and New Mexico. While the states have been relatively successful in complying with the compact’s allocation rules, the Costilla Creek catchment has experienced interstate upstream/downstream conflict, mainly during irrigation seasons. Whether or not the states will be able to avert conflict in the future and maintain compliance with the compact, is a critical question. The situation in the relatively small catchment is not unique. Various interstate watersheds, including the entire Rio Grande basin, the La Plata, Arkansas, and Colorado, are expected to face similar impacts from climate change, yet the water compacts that govern them may not be structured to adapt to these conditions. Looking at the Costilla Creek offers a valuable starting point for understanding how to model these effects across various basins. We have developed a lumped-parameter rainfall-runoff model including snow storage of the Costilla Creek watershed. Temperature and precipitation data from NCRS - SNOTEL stations together with USGS gauging station data were utilized for model calibration and validation. ISCCP solar radiation data and temperature data were used to estimate irrigation water demand in irrigated agriculture. The model is driven by the IPCC SRES A2 scenario. GCM ensemble averaged temperature / precipitation trends were extracted for the upper Rio Grande region. 50 year precipitation simulations were created using a

  6. A groundwater convection model for Rio Grande rift geothermal resources

    NASA Technical Reports Server (NTRS)

    Morgan, P.; Harder, V.; Daggett, P. H.; Swanberg, C. A.

    1981-01-01

    It has been proposed that forced convection, driven by normal groundwater flow through the interconnected basins of the Rio Grande rift is the primary source mechanism for the numerous geothermal anomalies along the rift. A test of this concept using an analytical model indicates that significant forced convection must occur in the basins even if permeabilities are as low as 50-200 millidarcies at a depth of 2 km. Where groundwater flow is constricted at the discharge areas of the basins forced convection can locally increase the gradient to a level where free convection also occurs, generating surface heat flow anomalies 5-15 times background. A compilation of groundwater data for the rift basins shows a strong correlation between constrictions in groundwater flow and hot springs and geothermal anomalies, giving strong circumstantial support to the convection model.

  7. A groundwater convection model for Rio Grande rift geothermal resources

    NASA Technical Reports Server (NTRS)

    Morgan, P.; Harder, V.; Daggett, P. H.; Swanberg, C. A.

    1981-01-01

    It has been proposed that forced convection, driven by normal groundwater flow through the interconnected basins of the Rio Grande rift is the primary source mechanism for the numerous geothermal anomalies along the rift. A test of this concept using an analytical model indicates that significant forced convection must occur in the basins even if permeabilities are as low as 50-200 millidarcies at a depth of 2 km. Where groundwater flow is constricted at the discharge areas of the basins forced convection can locally increase the gradient to a level where free convection also occurs, generating surface heat flow anomalies 5-15 times background. A compilation of groundwater data for the rift basins shows a strong correlation between constrictions in groundwater flow and hot springs and geothermal anomalies, giving strong circumstantial support to the convection model.

  8. STEM education for teachers in the Rio Grande Valley

    NASA Astrophysics Data System (ADS)

    Ries, Judit Gyorgyey; Baguio, Margaret R.

    2015-11-01

    We have worked with elementary and middle school teachers in the Rio Grande Valley for the last 10 years bringing Earth and Space Science themed workshops to underserved areas of Texas. The Texas curriculum was also changed to include Astronomy and Space Science requirement in the tests students need to take to prove their academic preparedness. The teachers worked through a variety of inquiry-based, hands-on activities after a short presentation on the background science. In order to evaluate our effectiveness, we have asked the teachers to take pre- and post-workshop tests, and we asked them to fill out a self-reflective survey. We will report on our experiences, what works best with the teachers, and in what areas we still have a long way to go.This work was supported by various NASA education grants and Cooperative agreements, as well as grants provided by the Texas Space Grant Consortium.

  9. Magnetotelluric pilot study in the Rio Grande Rift, southwest USA

    NASA Astrophysics Data System (ADS)

    Feucht, D. W.; Bedrosian, P. A.; Sheehan, A. F.

    2012-12-01

    A magnetotelluric (MT) pilot study consisting of approximately 25 stations distributed in and around the Rio Grande Rift of the southwest United States was carried out in the summer of 2012. Both broadband (100 Hz to 1000 s) and long-period (up to 10 000 s) MT data were collected across two profiles that run perpendicular to the rift axis near Denver, Colorado and Taos, New Mexico, respectively. Time-domain EM data was also collected at each site to account for galvanic distortion in the near-surface. The tectonic forces and rheologic properties behind the initiation and propagation of the rift are poorly understood. Surface mapping of volcanism, normal faulting and sedimentary basins reveals a narrow band of crustal deformation confined to a region in close proximity to the rift axis while geophysical results suggest that deformation is distributed across a much broader and deeper region of the lithosphere. In particular, seismic tomography shows low seismic wave speeds into the lower crust and upper mantle. The magnetotelluric technique is a well-proven passive electromagnetic method that allows for the detection of apparent resistivity at a wide range of depth scales. Complimenting the seismic results with MT data will provide important new information on the geologic and geophysical properties that control the rifting process in this low-strain rate environment. Properties to which the MT method is particular sensitive include temperature, fluid content, and mineral alteration. Preliminary results from this most recent survey are encouraging, showing good data quality up to 10 000 s. In an important precursor to full 2D modeling, the magnetotelluric phase tensor has been used to assess the dimensionality of the electrical resistivity structure at depth. This pilot study provides proof of concept for a much larger magnetotelluric experiment planned to take place in the Rio Grande Rift in 2013.

  10. Unusual Recharge Processes near Arroyos of the Rio Grande Aquifer, El Paso/Juarez Area

    NASA Astrophysics Data System (ADS)

    Merino, M.; Hibbs, B. J.; Hogan, J.; Eastoe, C. J.; Druhan, J.

    2005-12-01

    The twin-cities of El Paso and Juarez share the water resources of the Hueco Bolson aquifer and overlying Rio Grande aquifer. Both aquifers span the international border between Mexico and the United States. Salinity in the Rio Grande aquifer varies widely, some parts of the shallow aquifer containing less than 1,000 mg/L total dissolved solids (TDS), other parts of the aquifer exceeding 5,000 mg/L TDS. One sizable part of the "Lower Valley" area, approximately 45 km below El Paso contains very dilute water near the outer edge of the floodplain. Historically it had been thought that the dilute waters in this location were derived from recharge from arroyos that drained proximal parts of the Hueco Bolson. Instead, our hydrogen and oxygen isotope data and carbon-14 data indicate that these dilute waters were derived from pre-dam infiltration of the Rio Grande. Relatively light and slightly evaporated pre-dam waters (-11.5 del O18) at the arroyos are also relatively young (60 to 90 percent modern carbon), tagging them as runoff waters from pre-dam snowmelt in Colorado. These isotopically light waters are found up to 110 meters beneath land surface. Prior to Rio Grande rectification and channelization of the mid-1930's, the Rio Grande flowed near the outer edge of the floodplain where these pre-dam, dilute waters are found at depth. Review of predevelopment drill stem tests indicated a permeable zone about 150 to 230 meters deep that had a lower hydraulic head than the overlying Rio Grande aquifer. The permeable zone acted as a predevelopment sink for flow that induced recharge from the Rio Grande and Rio Grande aquifer. Thus, we can account for local predevelopment recharge of the Rio Grande aquifer from infiltration of dilute water from the Rio Grande prior to the historic era of channel rectification, and not from recharge from flanking arroyos as had been postulated by previous researchers.

  11. Mesohabitats, fish assemblage composition, and mesohabitat use of the Rio Grande silvery minnow over a range of seasonal flow regimes in the Rio Grande/Rio Bravo del Norte, in and near Big Bend National Park, Texas, 2010-11

    USGS Publications Warehouse

    Moring, J. Bruce; Braun, Christopher L.; Pearson, Daniel K.

    2014-01-01

    There were no statistically significant differences between the stream velocities associated with seine hauls of the Rio Grande silvery minnow and Tamaulipas shiner. Stream velocities associated with the seine hauls that included Rio Grande silvery minnow indicate that this species is predominantly found in low-velocity mesohabitats. Velocities associated with seine hauls that included the Tamaulipas shiner represented a much broader overall range of velocities than those associated with Rio Grande silvery minnow collections. No statistically significant differences were found between the depths for seine hauls that included Rio Grande silvery minnow or Tamaulipas shiner. The Rio Grande silvery minnow was more commonly collected in seine hauls from mesohabitats dominated by cobble substrates and less frequently collected in mesohabitats with substrates dominated by fine-sized silt and clay particles, gravels, and sands, in that order. In contrast, the Tamaulipas shiner was broadly distributed among mesohabitats characterized as having gravel, cobble, and silt and clay.

  12. Plutonium and the Rio Grande: Environmental Change and Contamination in the Nuclear Age

    NASA Astrophysics Data System (ADS)

    Leipnik, Mark

    Plutonium and the Rio Grande begins with an evocative description of the tranquility that prevailed along the Rio Grande in the halcyon days before the Manhattan Project changed the environment of this corner of New Mexico forever. Graf presents a methodology for studying the environmental impacts of the plutonium releases from facilities at Los Alamos. Specifically, he quantifies releases of various isotopes of plutonium and tracks their fate in the sediments and water bodies of the Rio Grande. Despite access to ample reliable data, his task is challenging: it requires regional-scale analysis and applications of techniques from disciplines including geomorphology, hydrology, environmental chemistry, plant physiology, and historical research.

  13. Extreme Drought Conditions in the Rio Grande/Bravo Basin

    NASA Astrophysics Data System (ADS)

    Gutiérrez, F.; Dracup, J. A.

    2001-12-01

    The Treaty of February 3, 1944 entitled "Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande" between the U.S. and Mexico regulates the distribution of flows of the rivers between these two countries. The treaty is based on hydrological data available up to 1944. Using new (historical and paleoclimatological) data, the water balance presented in the Treaty is re-examinated and the 431,721,000 m3/year allocation for USA during "extreme drought conditions" is re-evaluated. The authors define "extreme drought conditions" for this basin and a hydrological drought analysis is carried out using a streamflow simulation model. The analysis is complemented with an analysis of the effects of the El Niño - Southern Oscillation and the Pacific Decadal Oscillation on precipitation and streamflow. The results of this research will be applicable to potential changes in the current water resources management policies on the basin. Given the social, economical and political importance of this basin, the findings of this research potentially will have significant impacts. This research is founded by the NSF fund SAHRA (Science and Technology Center to study and promote the "Sustainability of Water Resources in Semi-Arid Regions" at the University of Arizona).

  14. Hydrological and Meteorological Disturbances in Rio Grande Riparian Ecosystems

    NASA Astrophysics Data System (ADS)

    Thibault, J. R.; Cleverly, J. R.; Dahm, C.

    2012-12-01

    Invasive species and ecohydrological disturbances are imperiling native riparian ecosystems. Adaptable, resilient exotic competitors including tamarisk have colonized many waterways in the western US. Alteration of the natural flow regime due to water diversions is expected to be exacerbated by climate change in this region, confounding restoration efforts. Climate change may also increase the likelihood of other disturbances, including extreme weather events (drought, floods, temperatures). We investigate how hydrological and meteorological variability impact water use by tamarisk communities that have overtaken native riparian vegetation. We have collected more than a decade of complete growing season eddy covariance evapotranspiration (ET) and water table (WT) elevation data at two sites along the Rio Grande corridor of central New Mexico, USA. Conditions have ranged from extreme drought to exceedingly wet years with extensive overbank flooding, and from record setting warm to cold temperatures. Severe to extreme droughts persisted throughout 2002 and 2003. Abundant snowpacks and wetter conditions led to extensive flooding early in the 2005 and 2008 growing seasons. Along with a return to intense drought conditions, extreme temperatures struck New Mexico in 2011. A deep freeze in early February followed by an extraordinarily late, extended hard freeze at the onset of the growing season was then succeeded by the warmest summer in the state's 117 year record. We present how water use by the replacement communities responds to droughts, flooding, and extreme temperatures, all of which are expected to increase in frequency, and speculate how these disturbances will affect native riparian ecosystems.

  15. [Epidemiological aspects of suicide in Rio Grande do Sul, Brazil].

    PubMed

    Meneghel, Stela Nazareth; Victora, Cesar Gomes; Faria, Neice Müller Xavier; Carvalho, Lenine Alves de; Falk, João Werner

    2004-12-01

    To describe epidemiological aspects of suicide mortality in a 10-year time series. Suicide deaths reported in the state of Rio Grande do Sul (RS), Brazil, were put together as historical time series based on data from the Ministry of Health Mortality Reporting System for the period 1980 to 1999. Suicides were grouped according to the WHO criteria and analyzed using standard demographic variables. Suicide rates (proportional mortality and mortality rates) in RS during the study period were the highest in Brazil. The standardized rates grew from around 9 per 100,000 in the 1980s to 11 per 100,000 in 1999. This increase in mortality was attributed mainly to male mortality rates that grew from 14 per 100,000 to the current 20 per 100,000. The male:female ratio increased from 3 to 5. The highest ratios were seen among the elderly although this ratio has been increasing in young adults as well. Widows, widowers and farmers/fishers had the highest mortality rates. The study highlights suicide as a collective health problem in RS and shows aspects that could contribute to preventive action.

  16. Upwarp of anomalous asthenosphere beneath the Rio Grande rift

    USGS Publications Warehouse

    Parker, E.C.; Davis, P.M.; Evans, J.R.; Iyer, H.M.; Olsen, K.H.

    1984-01-01

    Continental rifts are possible analogues of mid-ocean ridges, although major plate tectonic features are less clearly observed1. Current thermal models of mid-ocean ridges2-4 consist of solid lithospheric plates overlying the hotter, less viscous asthenosphere, with plate thickness increasing away from the ridge axis. The lithospheric lower boundary lies at or near the melting point isotherm, so that at greater depths higher temperatures account for lower viscosity, lower seismic velocities and possibly partial melting. Upwarp of this boundary at the ridge axis concentrates heat there, thus lowering densities by expansion and raising the sea floor to the level of thermal isostatic equilibrium. At slow spreading ridges, a major central graben forms owing to the mechanics of magma injection into the crust5. Topography, heat flow, gravity and seismic studies support these models. On the continents, a low-velocity channel has been observed, although it is poorly developed beneath ancient cratons6-9. Plate tectonic models have been applied to continental basins and margins10-12, but further similarities to the oceanic models remain elusive. Topographic uplift is often ascribed to Airy type isostatic compensation caused by crustal thickening, rather than thermal compensation in the asthenosphere. Here we discuss the Rio Grande rift, in southwestern United States. Teleseismic P-wave residuals show that regional uplift is explained by asthenosphere uplift rather than crustal thickening. ?? 1984 Nature Publishing Group.

  17. Geographic distribution of genetic diversity in populations of Rio Grande Chub Gila pandora

    USGS Publications Warehouse

    Galindo, Rene; Wilson, Wade; Caldwell, Colleen A.

    2016-01-01

    In the southwestern United States (US), the Rio Grande chub (Gila pandora) is state-listed as a fish species of greatest conservation need and federally listed as sensitive due to habitat alterations and competition with non-native fishes. Characterizing genetic diversity, genetic population structure, and effective number of breeders will assist with conservation efforts by providing a baseline of genetic metrics. Genetic relatedness within and among G. pandora populations throughout New Mexico was characterized using 11 microsatellite loci among 15 populations in three drainage basins (Rio Grande, Pecos, Canadian). Observed heterozygosity (HO) ranged from 0.71–0.87 and was similar to expected heterozygosity (0.75–0.87). Rio Ojo Caliente (Rio Grande) had the highest allelic richness (AR = 15.09), while Upper Rio Bonito (Pecos) had the lowest allelic richness (AR = 6.75). Genetic differentiation existed among all populations with the lowest genetic variation occurring within the Pecos drainage. STRUCTURE analysis revealed seven genetic clusters. Populations of G. pandora within the upper Rio Grande drainage (Rio Ojo Caliente, Rio Vallecitos, Rio Pueblo de Taos) had high levels of admixture with Q-values ranging from 0.30–0.50. In contrast, populations within the Pecos drainage (Pecos River and Upper Rio Bonito) had low levels of admixture (Q = 0.94 and 0.87, respectively). Estimates of effective number of breeders (N b ) varied from 6.1 (Pecos: Upper Rio Bonito) to 109.7 (Rio Grande: Rio Peñasco) indicating that populations in the Pecos drainage are at risk of extirpation. In the event that management actions are deemed necessary to preserve or increase genetic diversity of G. pandora, consideration must be given as to which populations are selected for translocation.

  18. Meetings and Events for Middle Rio Grande/Albuquerque (New Mexico)

    EPA Pesticide Factsheets

    Middle Rio Grande/Albuquerque (New Mexico) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.

  19. Workshop on The Rio Grande Rift: Crustal Modeling and Applications of Remote Sensing

    NASA Technical Reports Server (NTRS)

    Blanchard, D. P. (Editor)

    1980-01-01

    The elements of a program that could address significant earth science problems by combining remote sensing and traditional geological, geophysical, and geochemical approaches were addressed. Specific areas and tasks related to the Rio Grande Rift are discussed.

  20. Riparian habitat change along the Isleta-Belen reach of the Rio Grande

    Treesearch

    Joanne Mount; William Krausman; Deborah M. Finch

    1996-01-01

    We provide a summary of vegetation changes over a 11-year period (1 984-1 995) in the middle reach of the Rio Grande. Hink and Ohmart (1984) surveyed and mapped riparian vegetation along the middle Rio Grande as part of an extensive biological inventory conducted for the Army Corps of Engineers. We field-assessed and remapped the Isleta-Belen reach in 1995 to determine...

  1. Deep structure of the Rio Grande Rift: A magnetotelluric interpretation

    NASA Astrophysics Data System (ADS)

    Hermance, John F.; Pedersen, Jens

    1980-07-01

    The interpretation of long-period magnetotelluric data (T≤104 s) from several sites in the Rio Grande rift indicates a thin zone of anomalously high conductivity (S = 2200 S) at a depth of 10-17 km beneath the north central rift (Santa Fe) and a similar zone (S = 1600 S) at a depth of 21-28 km beneath the southern rift (El Paso). We suggest that these zones are contiguous with the tabular body previously delineated seismically over a restricted area (1700 km2) beneath Socorro, New Mexico, by Sanford and his colleagues and probably have a similar generic cause. Although the electrical conductivity itself can be affected by (1) electrolytic conduction in hydrothermal pore fluids, (2) conduction in the bulk silicate material itself, or (3) solid conduction through hydrated phases, such as layered silicates, we find the suggestion offered by Sanford and his colleagues for the Socorro structure to be the most attractive: the intracrustal zone represents a generic class of phenomena associated with the accumulation of basaltic melt derived from sources at greater depth. If this is the case, we may be seeing the effects of a thin zone (1 km) comprised totally of melt or a thicker zone containing as little as a 15-35% melt fraction. The periodic (T≤5×104 years) emplacement of such a magma accumulation and the subsequent perturbation and partial remelting of the surrounding country rock may in fact account for episodic silicic volcanism along the rift such as that which is seen, for example, in the Jemez Mountains.

  2. Restoration potential of Rio Grande riparian ecosystems amid hydroclimatic challenges

    NASA Astrophysics Data System (ADS)

    Thibault, J. R.; Dahm, C.; Cleverly, J. R.

    2013-12-01

    Hydrological processes drive the ecological functioning and sustainability of cottonwood-dominated riparian ecosystems in the arid southwestern USA. Snowmelt runoff elevates water tables (WTs) and inundates floodplains, which with favorable timing, magnitude, and duration promote cottonwood germination. Once established, these phreatophytes rely on shallow water tables. In New Mexico's middle Rio Grande (MRG) corridor, native cottonwood riparian communities are threatened by diminished flooding and deepening WTs due to river management, competitive invasive vegetation, and a persistent drought. Since 2000 we have monitored WTs and evapotranspiration (via eddy covariance flux towers) at several locations along the MRG. Conditions have ranged from extreme drought to exceedingly wet years with extensive overbank flooding. We assess the threats to and the restoration of these diverse ecosystems. Despite 2 wet years, drought has defined conditions during the first 13 years of our research (2000 - 2012). Severe to extreme drought has characterized about 40% of snowmelt periods critical to cottonwood germination and nearly half of the complete growing seasons. River flows have averaged 75% of normal and < 50% in many years. Peak snowmelt runoff during 2000 - 2012 was 36% lower and occurred 10 days earlier than the long-term mean. Our flood-prone site has been significantly inundated (> 50% of the snowmelt period) only twice, in the two wet years. The hydroclimatic regime of this region is expected to see an increase drought frequency. Thus, it is imperative to optimize restoration strategies. Suitable sites have diminished greatly as the once meandering, more freely flowing MRG has been constrained and depleted. Invasive vegetation less susceptible to the altered hydrologic regime further impact the MRG. Our long-term monitoring at various sites over a range of hydroclimatic extremes reveals attributes that can be evaluated for restoration potential. These include

  3. LOWER RIO GRANDE VALLEY TRANSBOUNDARY AIR POLLUTION PROJECT (TAPP) (MAIN REPORT)

    EPA Science Inventory

    The purpose of the Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was to obtain air quality data for a full year at three border monitoring sites to assess anthropogenic and biogenic emission impacts and transboundary air pollution transport in the Lower Rio...

  4. LOWER RIO GRANDE VALLEY TRANSBOUNDARY AIR POLLUTION PROJECT (TAPP) (MAIN REPORT)

    EPA Science Inventory

    The purpose of the Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was to obtain air quality data for a full year at three border monitoring sites to assess anthropogenic and biogenic emission impacts and transboundary air pollution transport in the Lower Rio...

  5. 75 FR 54085 - Divide Ranger District, Rio Grande National Forest; Colorado; Big Moose Vegetation Management...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-03

    ... [Federal Register Volume 75, Number 171 (Friday, September 3, 2010)] [Notices] [Page 54085] [FR Doc No: 2010-22037] DEPARTMENT OF AGRICULTURE Forest Service Divide Ranger District, Rio Grande National Forest; Colorado; Big Moose Vegetation Management Project AGENCY: Forest Service, Rio...

  6. A Confluence of Community: Gathering the Waters of the Rio Grande.

    ERIC Educational Resources Information Center

    Smith, Craig

    2001-01-01

    A Gathering of Waters is a community-based art and activism project to raise awareness that the Rio Grande/Rio Bravo is a desperately endangered river, connect communities dependent on the river, and galvanize those communities into action. Activities provided actual and symbolic experiences of river water for American Indian, Hispanic, Anglo, and…

  7. Habitat use of the Rio Grande silvery minnow (Hybognathus amarus) during a long-term flood pulse in the Middle Rio Grande, New Mexico

    Treesearch

    Hugo A. Magana

    2012-01-01

    The Middle Rio Grande (MRG) of New Mexico has been influenced by man for over 500 years. Native Americans began diverting water to irrigate agricultural crops in the floodplain in the 14th century. The Spanish followed and increased agricultural irrigation to over 125 000 acres. Frequent flooding of the MRG valley in the 19th century led to many engineering projects in...

  8. Trace elements and organic compounds associated with riverbed sediments in the Rio Grande/Rio Bravo basin, Mexico and Texas

    USGS Publications Warehouse

    Lee, R.W.; Wilson, J.T.

    1997-01-01

    In 1991, the Texas Natural Resource Conservation Commission (TNRCC) was mandated by the Texas Clean Rivers Act (Senate Bill 818) to assess water quality of rivers in Texas. Recent efforts to collect information for the assessment of water quality in the Rio Grande/Rio Bravo Basin have involved Federal agencies on both sides of the 1,248-mile U.S.-Mexico border?U.S. Environmental Protection Agency, U.S. Geological Survey (USGS), Secretaria de Desarollo Social (Secretary for Social Development, Mexico), National Water Commission of Mexico, and International Boundary and Water Commission?as well as State and local agencies in a spirit of international cooperation. Substantial efforts have been made to gather data needed to determine the quality of water and ecological status of the Rio Grande/Rio Bravo, especially at sites along the border (fig. 1). The purpose of this report is to assess selected historical data of trace elements and organic compounds in riverbed sediments of the Rio Grande/Rio Bravo, and of the Pecos River and the Arroyo Colorado in Texas.

  9. Quantifying Nitrogen Sources and Cycling Along the Upper Rio Grande

    NASA Astrophysics Data System (ADS)

    Oelsner, G.; Brooks, P.; Hogan, J.; Lacey, H.; McDonnell, D.; Zeglin, L.; Mills, S.; Villinski, J.

    2005-05-01

    Synoptic sampling of a 1200km reach of the Upper Rio Grande has been performed in January and August from 2000 to present. The objective of this sampling has been to develop seasonal relationships between discharge, land use, and major water quality parameters including salinity and nutrients. In general, water quality, both salinity and nutrient concentrations, degrades with distance downstream. Increased salinity is explained largely by gradual downstream increase due to evapoconcentration punctuated by localized inputs of saline groundwater. Both total dissolved nitrogen (TDN) and Dissolved Organic Carbon (DOC) concentrations gradually increase with distance downstream, however for TDN this trend is punctuated by large, localized inputs primarily from urban areas. Somewhat surprisingly, surface water draining from areas of intensive, irrigated agriculture during the growing season often had lower nutrient and DOC concentrations than the river. Increased spatial and temporal sampling of the 250km reach between Cochiti Dam and Elephant Butte Reservoir was conducted in June, July and August of 2004 to quantify the relationships between agricultural and urban land use and nutrient loading as well as nutrient sinks within the surface water, hyporheic and riparian systems. Summer 2004 data indicate that wastewater treatment plants are the largest and most consistent sources of inorganic nitrogen to the river. In both June and July there was a net removal of nitrogen from the reach as discharge decreased 26%, concentrations decreased 39%, and TDN loads decreased 56%. Interestingly, the diversion of river water for irrigated agriculture reduced discharge 25%, TDN loads 60% and concentrations 47% along the same reach before draining back to the main stem of the river suggesting that agricultural diversions were serving as a sink for nitrogen. However in August, TDN loads were higher in returning drains suggesting that agricultural systems had switched to a net source of

  10. Evaluation of canoe surveys for anurans along the Rio Grande in Big Bend National Park, Texas

    USGS Publications Warehouse

    Jung, R.E.; Bonine, K.E.; Rosenshield, M.L.; de la Reza, A.; Raimondo, S.; Droege, S.

    2002-01-01

    Surveys for amphibians along large rivers pose monitoring and sampling problems. We used canoes at night to spotlight and listen for anurans along four stretches of the Rio Grande in Big Bend National Park, Texas, in 1998 and 1999. We explored temporal and spatial variation in amphibian counts and species richness and assessed relationships between amphibian counts and environmental variables, as well as amphibian-habitat associations along the banks of the Rio Grande. We documented seven anuran species, but Rio Grande leopard frogs (Rana berlandieri) accounted for 96% of the visual counts. Chorus surveys along the river detected similar or fewer numbers of species, but orders of magnitude fewer individuals compared to visual surveys. The number of species varied on average by 37% across monthly and nightly surveys. We found similar average coefficients of variation in counts of Rio Grande leopard frogs on monthly and nightly bases (CVs = 42-44%), suggesting that canoe surveys are a fairly precise technique for counts of this species. Numbers of Rio Grande leopard frogs observed were influenced by river gage levels and air and water temperatures, suggesting that surveys should be conducted under certain environmental conditions to maximize counts and maintain consistency. We found significant differences in species richness and bullfrog (Rana catesbeiana) counts among the four river stretches. Four rare anuran species were found along certain stretches but not others, which could represent either sampling error or unmeasured environmental or habitat differences among the river stretches. We found a greater association of Rio Grande leopard frogs with mud banks compared to rock or cliff (canyon) areas and with seepwillow and open areas compared to giant reed and other vegetation types. Canoe surveys appear to be a useful survey technique for anurans along the Rio Grande and may work for other large river systems as well.

  11. Creating a standardized watersheds database for the lower Rio Grande/Rio Bravo, Texas

    USGS Publications Warehouse

    Brown, Julie R.; Ulery, Randy L.; Parcher, Jean W.

    2000-01-01

    This report describes the creation of a large-scale watershed database for the lower Rio Grande/Rio Bravo Basin in Texas. The watershed database includes watersheds delineated to all 1:24,000-scale mapped stream confluences and other hydrologically significant points, selected watershed characteristics, and hydrologic derivative datasets. Computer technology allows generation of preliminary watershed boundaries in a fraction of the time needed for manual methods. This automated process reduces development time and results in quality improvements in watershed boundaries and characteristics. These data can then be compiled in a permanent database, eliminating the time-consuming step of data creation at the beginning of a project and providing a stable base dataset that can give users greater confidence when further subdividing watersheds. A standardized dataset of watershed characteristics is a valuable contribution to the understanding and management of natural resources. Vertical integration of the input datasets used to automatically generate watershed boundaries is crucial to the success of such an effort. The optimum situation would be to use the digital orthophoto quadrangles as the source of all the input datasets. While the hydrographic data from the digital line graphs can be revised to match the digital orthophoto quadrangles, hypsography data cannot be revised to match the digital orthophoto quadrangles. Revised hydrography from the digital orthophoto quadrangle should be used to create an updated digital elevation model that incorporates the stream channels as revised from the digital orthophoto quadrangle. Computer-generated, standardized watersheds that are vertically integrated with existing digital line graph hydrographic data will continue to be difficult to create until revisions can be made to existing source datasets. Until such time, manual editing will be necessary to make adjustments for man-made features and changes in the natural landscape

  12. Monitoring the water quality of the Nation's large rivers: Rio Grande NASQAN Program

    USGS Publications Warehouse

    Lurry, Dee L.; Reutter, David C.; Wells, Frank C.

    1998-01-01

    The U.S. Geological Survey (USGS) has monitored the water quality in the Rio Grande Basin as part of the redesigned National Stream Quality Accounting Network (NASQAN) since 1995 (Hooper and others, 1997). The NASQAN program was designed to characterize the concentrations and transport of sediment and selected chemical constituents found in the Nation's large rivers-including the Mississippi, Colorado, and Columbia in addition to the Rio Grande. In these four basins, the USGS currently (1998) operates a network of 40 NASQAN sites, with an emphasis on quantifying the mass flux for each constituent (the amount of material moving past the site, expressed in tons per day). By applying a consistent flux-based approach in the Rio Grande Basin, the NASQAN program is generating the information needed to identify regional sources for a variety of constituents, including agricultural chemicals and trace elements, in the basin. The effect of the large reservoirs on the Rio Grande can be observed as constituent fluxes are routed downstream. The analysis of constituent fluxes on a basin-wide scale will provide the means to assess the influence of human activity on water-quality conditions in the Rio Grande.

  13. Paleohydraulic interpretation and morphologic reconstruction of the northern Rio Grande River, Colorado

    SciTech Connect

    Muriceak, D.R. . Geosciences Dept.)

    1993-03-01

    A flight of unpaired late Quaternary terraces comprised of fluvio-glacial deposits flanks the northern Rio Grande River for nearly ten miles along the upper Rio Grande valley. These terraces, which occur at decreasing heights due to progressive valley incision, are comprised of sediments that represent aggradation by braided streams flowing from the terminus of valley glaciers that flowed down the upper Rio Grande at least twice during late Quaternary time. Terminal moraines that are equivalent to Pinedale and Bull Lake stages of ice advance occur at the upstream origin of the terraces. Incision of the Rio Grande river since Pinedale time has resulted in at least three cut terraces that converge downstream. The purpose of this report is to reconstruct the Quaternary history of the Rio Grande river valley during its transition from full glacial to interglacial conditions. A total geodetic station provided coordinate and elevation data to correlate the terraces, extrapolate channel geometry through cross sections, and construct longitudinal profiles of the individual terrace surfaces. Measurements of the B-axis length of boulders on both terrace tread surfaces and surfaces within the terrace deposits were used to reconstruct paleoflow hydrology. The coarsest channel morphological features, too large to be deposited by normal glacial outwash, were deposited during a catastrophic outburst flood (after the failure of an ice dammed lake) that produced high discharge.

  14. Merged digital aeromagnetic data for the middle Rio Grande and southern Espanola basins, New Mexico

    USGS Publications Warehouse

    Sweeney, Ronald E.; Grauch, V.J.S.; Phillips, Jeffrey D.

    2002-01-01

    The U. S. Geological Survey (USGS) recently conducted a multi-disciplinary study of the Middle Rio Grande basin (Bartolino and Cole, 2002; Fig. 1). The main purpose of this study was to gain a better multi-dimensional understanding of the basin's hydrogeologic framework and use this new understanding to construct an improved regional ground-water flow model. The Middle Rio Grande basin fill serves as the primary water resource for Albuquerque and surrounding communities (Thorn and others, 1993). It is composed of poorly consolidated, Tertiary to Quaternary sediments, collectively called the Santa Fe Group. These sediments were deposited during the Tertiary to Quaternary development of the Rio Grande rift (Fig. 1, inset). The strata vary in thickness from 1,000 to more than 4,000 m and range from mudstone to conglomerate (Kelley, 1977; May and Russell, 1994).

  15. Epidemiological study of scorpion stings in the Rio Grande do Norte State, Northeastern Brazil.

    PubMed

    Araújo, Kaliany Adja Medeiros de; Tavares, Aluska Vieira; Marques, Michael Radan de Vasconcelos; Vieira, Alecxandro Alves; Leite, Renner de Souza

    2017-08-07

    This communication is a retrospective epidemiological study of the scorpion sting cases recorded from 2007 to 2014 in the Rio Grande do Norte State, Northeastern Brazil. The data was collected from the Injury Notification Information System database of the Health Department of Rio Grande do Norte State. A total of 20,555 cases were studied. The cases were distributed over all months of the period studied and occurred mainly in urban areas. Victims were predominantly 20-29 year-old women. Most victims were stung on the foot and received medical care within 1-3 h after being stung. The cases were mostly classified as mild and progressed to cure. Scorpion stings in Rio Grande do Norte State are an environmental public health problem that needs to be monitored and controlled throughout the year.

  16. Epidemiological study of scorpion stings in the Rio Grande do Norte State, Northeastern Brazil

    PubMed Central

    de Araújo, Kaliany Adja Medeiros; Tavares, Aluska Vieira; Marques, Michael Radan de Vasconcelos; Vieira, Alecxandro Alves; Leite, Renner de Souza

    2017-01-01

    ABSTRACT This communication is a retrospective epidemiological study of the scorpion sting cases recorded from 2007 to 2014 in the Rio Grande do Norte State, Northeastern Brazil. The data was collected from the Injury Notification Information System database of the Health Department of Rio Grande do Norte State. A total of 20,555 cases were studied. The cases were distributed over all months of the period studied and occurred mainly in urban areas. Victims were predominantly 20-29 year-old women. Most victims were stung on the foot and received medical care within 1-3 h after being stung. The cases were mostly classified as mild and progressed to cure. Scorpion stings in Rio Grande do Norte State are an environmental public health problem that needs to be monitored and controlled throughout the year. PMID:28793026

  17. Investigation of rifting processes in the Rio Grande Rift using data from unusually large earthquake swarms

    SciTech Connect

    Sanford, A.; Balch, R.; House, L.; Hartse, H.

    1995-12-01

    San Acacia Swarm in the Rio Grande Rift. Because the Rio Grande rift is one of the best seismically instrumented rift zones in the world, studying its seismicity provides an exceptional opportunity to explore the active tectonic processes within continental rifts. We have been studying earthquake swarms recorded near Socorro in an effort to link seismicity directly to the rifting process. For FY94, our research has focused on the San Acacia swarm, which occurred 25 km north of Socorro, New Mexico, along the accommodation zone between the Albuquerque-Belen and Socorro basins of the central Rio Grande rift. The swarm commenced on 25 February 1983, had a magnitude 4.2 main shock on 2 March and ended on 17 March, 1983.

  18. New evidence for magmatic intrusion beneath the Rio Grande rift, New Mexico.

    USGS Publications Warehouse

    Towle, J.N.

    1980-01-01

    An analysis of the geomagnetic variation field across the Rio Grande rift has identified two concentrations of telluric current flow beneath the rift caused by channeling of telluric currents in electrically conductive structures in the crust and upper mantle. A shallow conductor nearly coincides with a very strong reflection in a high-resoltuion seismic-reflection profile across the central Rio Grande graben which has been attributed to a lens at mid-crustal depth. The deep (more than 30 km) conductor is 200 km wide and may indicate anomalously high temperatures and, by inference, a thinning of the lithosphere beneath the rift.-Authors

  19. Water Management for Competing Uses: Environmental Flows in the Transboundary Rio Grande/Rio Bravo

    NASA Astrophysics Data System (ADS)

    Sandoval Solis, S.; McKinney, D. C.

    2011-12-01

    Introduction Due to high water demand, the scarcity of water, and the complexity of water allocation, environmental flows have not been considered as an integral part of the water management in the Rio Grande/Rio Bravo transboundary basin. The Big Bend reach is located between the cities of Presidio/Ojinaga to Amistad international reservoir, along the main stream (Fig. 1). Important environmental habitats such as the Big Bend National and State Park in the U.S., the Maderas del Carmen, Cañon de Santa Elena and Ocampo natural reserved areas in Mexico are ecologically threatened because of the lack of environmental water management policies. Several efforts have been undertaken by scientists, government agencies and NGOs to determine the environmental flows for this reach and water management policies that can provide these flows. Objective The objective of this research is to describe a water management policy that can conciliate environmental and human water uses in the Big Bend region. In other words, define a policy that can provide environmental flows without harming water supply for stakeholders or increasing flood risk, within legal and physical constraints of the system. Methodology First, the system was characterized identifying water users, hydraulic infrastructure, and water allocation according to state, federal and international regulations. Second, a hydrograph for environmental flows was proposed that mimics the hydrologic characteristics of the prior dam alteration. Third, a water planning model was constructed to evaluate alternative policies. Fourth, the water management is proposed to provide environmental restoration flows from Luis L. Leon reservoir. This policy considers mechanisms that reduce flooding and drought risks, while meting national and international water regulations. Results Three types of natural flow regimes are considered: (1) median flows aimed to provide the base flow in the region, (2) high flows to provide transversal

  20. 78 FR 16569 - Iowa Pacific Holdings, LLC, Permian Basin Railways, and San Luis & Rio Grande Railroad-Corporate...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Surface Transportation Board Iowa Pacific Holdings, LLC, Permian Basin Railways, and San Luis & Rio Grande... Holdings, LLC (IPH), its wholly owned subsidiaries Permian Basin Railways (PBR) and San Luis & Rio Grande...

  1. 76 FR 31678 - San Luis & Rio Grande Railroad-Continuance in Control Exemption-Saratoga and North Creek Railway...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Surface Transportation Board San Luis & Rio Grande Railroad--Continuance in Control Exemption--Saratoga and North Creek Railway, LLC San Luis & Rio Grande Railroad (SLRG), a Class III rail carrier, has...

  2. 75 FR 33326 - Notice of Intent To Establish and Call for Nominations for the Rio Grande Natural Area Commission...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-11

    ... Natural Area Commission, Colorado AGENCY: Bureau of Land Management, Interior. ACTION: Notice. SUMMARY... the Secretary of the Interior (Secretary) is establishing the Rio Grande Natural Area Commission.... The Commission will advise the Secretary with respect to the Rio Grande Natural Area (Natural Area...

  3. Water-quality trends in the Rio Grande/Rio Bravo Basin using sediment cores from reservoirs

    USGS Publications Warehouse

    Van Metre, Peter C.; Mahler, B.J.; Callender, Edward C.

    1997-01-01

    In 1991, the U.S. Geological Survey (USGS) began full implementation of the National Water-Quality Assessment (NAWQA) Program (Leahy and others, 1990). Also in 1991, the State of Texas established the Clean Rivers Program (CRP) administered by the Texas Natural Resource Conservation Commission (TNRCC). The coring study reported here was a collaborative effort between the NAWQA Program and the CRP Rio Grande Border Environmental Assessment Team, with additional funding support from the El Paso County Water Improvement District No. 1.

  4. Research and management of soil, plant, animal, and human resources in the Middle Rio Grande Basin

    Treesearch

    Deborah M. Finch

    1996-01-01

    The Rocky Mountain Forest and Range Experiment Station initiated a research program in 1994 called. "Ecology, diversity, and sustainability of soil, plant, animal, and human resources of the Rio Grande Basin". This program is funded by an Ecosystem Management grant from Forest Service Research. Its mission focuses on the development and application of new...

  5. STS-65 Earth observation of dust plumes from Rio Grande in Southern Bolivia

    NASA Technical Reports Server (NTRS)

    1994-01-01

    STS-65 Earth observation taken aboard Columbia, Orbiter Vehicle (OV) 102, is of dust plumes from the Rio Grande in Southern Bolivia. A series of dust plumes can be seen rising from sand banks in the Rio Grande of southern Bolivia, bottom right of this northeast-looking view. The Rio Grande brings sediment from the Andes (foothills visible in the foreground, bottom left) and flows across the flat country of the northern Chaco plain. During the low-flow season, sand banks of this sediment are exposed to northerly winds which often blow dust into the surrounding forest. One of the significances of the dust plumes is that dust acts as a source of nutrient for the local soils. This is the most impressive example of dust ever recorded on Shuttle photography from this river. Such plumes have been seen on photographs from four previous missions (STS-31, STS-47, STS-48, STS-51I) emanating from the Rio Grande. The plumes are regularly space because the sand is blown only from those reaches of th

  6. Dam impacts on and restoration of an alluvial river-Rio Grande, New Mexico

    Treesearch

    Gigi Richard; Pierre Julien

    2003-01-01

    The impact of construction of dams and reservoirs on alluvial rivers extends both upstream and downstream of the dam. Downstream of dams, both the water and sediment supplies can be altered leading to adjustments in the river channel geometry and ensuing changes in riparian and aquatic habitats. The wealth of pre and post-regulation data on the Middle Rio Grande, New...

  7. Stopover ecology of landbirds migrating along the middle Rio Grande in spring and fall

    Treesearch

    Wang Yong; Deborah M. Finch

    2002-01-01

    This research represents the first comprehensive summary of our study of stopover ecology of migratory landbirds in riparian habitats along the middle Rio Grande of central New Mexico. We report results from mist-netting operations conducted during spring and fall migration in 1994, 1995, and 1996. A total of 23,800 individuals of 146 species were captured during the...

  8. Impacts of non-native plant removal on vertebrates along the Middle Rio Grande (New Mexico)

    Treesearch

    Heather L. Bateman; Alice Chung-MacCoubrey; Deborah M. Finch; Howard L. Snell; David L. Hawksworth

    2008-01-01

    The Middle Rio Grande and its riparian forest in central New Mexico are the focus of restoration activities to reverse or lessen negative anthropogenic impacts. The riparian forest is the largest gallery cottonwood (Populus deltoides) forest in the Southwest (Hink and Ohmart 1984). Historically, the river was free to meander across the floodplain,...

  9. Morphology of the Middle Rio Grande from Cochiti Dam to Bernalillo Bridge, New Mexico

    Treesearch

    Claudia Leon Salazar

    1998-01-01

    The continuous geomorphologic changes in the Middle Rio Grande in New Mexico have been of interest for many governmental agencies involved with the management and operation of this river system. Due to sedimentation problems along this river, highly developed plans for sediment detention and flood control have been carried out. Cochiti Dam was built as a part of these...

  10. Colonization of the eastern bluebird along the Rio Grande in New Mexico

    Treesearch

    Jean-Luc E. Cartron; Michael D. Means; David L. Hawksworth; Deborah M. Finch

    2007-01-01

    During the 20th century the Eastern Bluebird (Sialia sialis) expanded its range westward, mainly as a result of anthropogenic alteration of habitats. Along the Rio Grande in New Mexico the species' numbers in winter have recently increased spectacularly, and from 1999 through 2004 four records of breeding were published. Here we report 30...

  11. Constraints and opportunities for ecological restoration in the Rio Grande Valley, Texas

    USDA-ARS?s Scientific Manuscript database

    There are few areas in the United States that have experienced a more precipitous growth than the Lower Rio Grande Valley (RGV) in south Texas, where human populations have almost doubled in the last 20 years. This growth is matched with a rapid proliferation of built environments that is often asso...

  12. Projecting avian responses to landscape management along the Middle Rio Grande, New Mexico

    USDA-ARS?s Scientific Manuscript database

    Lack of flooding due to river impoundments on the middle Rio Grande has contributed to the spread of exotic vegetation with dense understory fuel loads. Restoration has focused on understory vegetation thinning but it is unclear how these actions impact bird populations. We quantified densities of ...

  13. A New species and records of Gripopterygidae (Plecoptera) from Rio Grande do Sul State, Southern Brazil.

    PubMed

    Novaes, Marcos Carneiro; Da Conceição Bispo, Pitágoras

    2016-10-17

    Specimens of Gripopterygidae (Plecoptera) from Rio Grande do Sul State, southern Brazil were studied. A new species, Tupiperla sepeensis n. sp. is described. Tupiperla misionera Froehlich 2002 is a new record for Brazil and Gripopteryx reticulata Brauer 1866 and Tupiperla tessellata Brauer 1866 are new records for southern Brazil.

  14. Environmental Degradation in a Dependent Region: The Rio Grande Valley of Mexico and Texas.

    ERIC Educational Resources Information Center

    Jones, Richard C.

    1999-01-01

    Traces the interrelationships among dependence, environmental degradation, and human health in the Rio Grande Valley of Mexico and Texas. Presents a case study on environmental factors threatening family health in households located on both sides of the border; the health problems can be overcome by addressing restrictive zoning, health services,…

  15. Landbird migration along the Middle Rio Grande: Summary of banding data from spring and fall 1994

    Treesearch

    Wang Yong; Deborah M. Finch; Steve W. Cox

    1995-01-01

    Northbound and southbound movement along major waterways is characteristic of migratory birds nesting in North America. It is likely that river corridors are more important to migrating birds in arid parts of North America than in humid, more heavily vegetated areas (Wauer 1977). Although quantitative analyses of landbird migration along the Rio Grande corridor are not...

  16. 78 FR 57411 - Second Call for Nominations for the Rio Grande Natural Area Commission, CO

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-18

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF THE INTERIOR Bureau of Land Management Second Call for Nominations for the Rio Grande Natural Area Commission, CO... implementation of a management plan relating to non-Federal land in the Natural Area. The BLM is issuing a...

  17. A survey of bee species found pollinating watermelons in the Lower Rio Grande Valley of Texas

    USDA-ARS?s Scientific Manuscript database

    Using a combination of flower traps and visual observations, we surveyed three watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] fields in the Lower Rio Grande Valley to determine what bees inhabit this crop in this region. No managed honey bee (Apis mellifera L.) hives were in any of the fie...

  18. The potential for implementing partial restoration of the Middle Rio Grande ecosystem

    Treesearch

    Clifford S. Crawford; Lisa M. Ellis; Manuel C. Molles; H. Maurice Valett

    1996-01-01

    The Rio Grande currently inundates only a small portion of its riparian forests during late spring runoff. Such flood events were once responsible for the germination of cottonwoods and willows along the river, for a mosaic of wetlands mixed with different aged stands of forest, and for enhancement of decomposition and nutrient cycling. River regulation in this century...

  19. Vulnerability of species to climate change in the Southwest: terrestrial species of the Middle Rio Grande

    Treesearch

    Megan M. Friggens; Deborah M. Finch; Karen E. Bagne; Sharon J. Coe; David L. Hawksworth

    2013-01-01

    We used a vulnerability scoring system to assess the vulnerability of 117 vertebrate species that occur in the Middle Rio Grande Bosque (MRGB) to expected climate change. The purpose of this project was to guide wildlife managers on options and considerations for climate change adaptation. The 117 species occur regularly in the MRGB during the breeding season, winter,...

  20. Mapping giant reed along the Rio Grande using airborne and satellite imagery

    USDA-ARS?s Scientific Manuscript database

    Giant reed (Arundo donax L.) is a perennial invasive weed that presents a severe threat to agroecosystems and riparian areas in the Texas and Mexican portions of the Rio Grande Basin. The objective of this presentation is to give an overview on the use of aerial photography, airborne multispectral a...

  1. Urban Impact of Dissolved Metals in the Paso del Norte Segment of the Rio Grande

    ERIC Educational Resources Information Center

    Freiwan, Sumayeh Ahmad

    2013-01-01

    The Paso del Norte segment of the Rio Grande experiences two seasons per year; the (wet) irrigation season and the (dry) non-irrigation season. The goal of this study was to improve the understanding of occurrence and contribution of dissolved metals in this region during the non-irrigation season. The objectives of this study were to (1) evaluate…

  2. Captures of Crawford's gray shrews (Notiosorex crawfordi) along the Rio Grande in central New Mexico

    Treesearch

    Alice Chung-MacCoubrey; Heather L. Bateman; Deborah M. Finch

    2009-01-01

    We captured >2000 Crawford's gray shrews (Notiosorex crawfordi) in a riparian forest mainly consisting of cottonwoods (Populus deltoides) along the Rio Grande in central New Mexico. Little has been published about abundance and habitat of Crawford's gray shrew throughout its distributional range. During 7 summers, we...

  3. Projecting avian responses to landscape managment along the middle RIO GRANDE, New Mexico

    USDA-ARS?s Scientific Manuscript database

    Lack of flooding due to river impoundments on the middle Rio Grande has contributed to the spread of exotic vegetation with dense understory fuel loads. Restoration has focused on understory vegetation thinning but it is unclear how these actions impact bird populations. We quantified densities of ...

  4. Hydraulic modeling and meander migration of the Middle Rio Grande, New Mexico

    Treesearch

    Michael J. Sixta

    2004-01-01

    The dynamic characteristics of the Middle Rio Grande (MRG) in central New Mexico have been of both interest and concern for the regulatory agencies involved with its management. The MRG has experienced sedimentation problems, prompting the development and implementation of sediment detention and flood control features, including the construction of Cochiti Dam in 1973...

  5. Pentimento: Fuels reduction and restoration in the Bosque of the Middle Rio Grande

    Treesearch

    Deborah M. Finch

    2008-01-01

    The Middle Rio Grande of New Mexico is the most extensive, remaining bosque, or cottonwood forest in the southwest. Alterations caused by humans-damming and channeling the river, controlling floods, and planting non-native trees-have disrupted the cycles of the earlier ecosystem. Without periodic flooding, native cottonwoods cannot regenerate. Invasive exotic plants...

  6. Avian community composition and habitat importance in the Rio Grande corridor of New Mexico

    Treesearch

    David A. Leal; Raymond A. Meyer; Bruce C. Thompson

    1996-01-01

    We investigated avian species richness and abundance within vegetation communities of the Rio Grande Corridor of New Mexico during spring, summer, and fall 1992 and 1993. A subset of 64 transects, for which all bird and vegetation variables were available, representing 16 composite vegetation community types were subjected to canonical correlation analysis to...

  7. Geomorphic analysis of the Middle Rio Grande-Elephant Butte Reach, New Mexico

    Treesearch

    Tracy Elizabeth. Owen

    2012-01-01

    The Elephant Butte Reach spans about 30 miles, beginning from the South Boundary of the Bosque del Apache National Wildlife Refuge (River Mile 73.9) to the "narrows" of the Elephant Butte Reservoir (River Mile 44.65), in central New Mexico. Sediment plugs occasionally form along the Middle Rio Grande, completely blocking the main channel of the river. In 1991...

  8. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Air Quality Control Region. 81.83 Section 81.83 Protection of Environment ENVIRONMENTAL PROTECTION... Designation of Air Quality Control Regions § 81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control... between secs. 1 and 2 T. 7 N., R. 2 W.; thence south to the southern boundary of the Laguna Indian...

  9. Human impacts on riparian ecosystems of the Middle Rio Grande Valley during historic times

    Treesearch

    Frank E. Wozniak

    1996-01-01

    The development of irrigation agriculture in historic times has profoundly impacted riparian ecosystems in the Middle Rio Grande Valley of New Mexico. A vital relationship has existed between water resources and settlement in the semi-arid Southwest since prehistoric times. Levels of technology have influenced human generated changes in the riparian ecosystems of the...

  10. Native montane fishes of the Middle Rio Grande Ecosystem: Status, threats, and conservation

    Treesearch

    Bob Calamusso; John N. Rinne

    1999-01-01

    Between 1994 and 1997, research was conducted on three native, montane species of the Middle Rio Grande Ecosystem, in the Carson and Santa Fe national forests. The focus of study was on abiotic and biotic factors that affected status, distribution, biology and habitat of these species. Results of study suggest negative interactions with non-native species and,...

  11. Urban Impact of Dissolved Metals in the Paso del Norte Segment of the Rio Grande

    ERIC Educational Resources Information Center

    Freiwan, Sumayeh Ahmad

    2013-01-01

    The Paso del Norte segment of the Rio Grande experiences two seasons per year; the (wet) irrigation season and the (dry) non-irrigation season. The goal of this study was to improve the understanding of occurrence and contribution of dissolved metals in this region during the non-irrigation season. The objectives of this study were to (1) evaluate…

  12. Estimating water use by giant reed along the Rio Grande River using a large aperture scintillometer

    USDA-ARS?s Scientific Manuscript database

    Giant reed (Arundo donax L.) is a bamboo-like perennial invasive weed from Eurasia presenting a severe threat to agroecosystems and riparian areas in Texas and Mexican portions of the Rio Grande River Basin. It is known to consume excessive amounts of water to support its rapid vegetative growth rat...

  13. Economic implications for the biological control of Arundo donax: Rio Grande Basin

    USDA-ARS?s Scientific Manuscript database

    Giant reed, Arundo donax L., is a large, bamboo-like plant native to the Mediterranean region. It has invaded several thousand hectares of the Rio Grande riparian habitat in Texas and Mexico. The United States Department of Agriculture-Agricultural Research Service (USDA-ARS) is investigating four...

  14. Economic implications for the biological control of Arundo donax: Rio Grande Basin

    USDA-ARS?s Scientific Manuscript database

    Giant reed, Arundo donax L., is a large bamboo-like plant native to the Mediterranean region. It has invaded several thousand hectares of the Rio Grande riparian habitat in Texas and Mexico. The United States Department of Agriculture-Agricultural Research Service (USDA-ARS) is investigating four ...

  15. Case study: Equivalent widths of the Middle Rio Grande, New Mexico

    Treesearch

    Claudia Leon; Pierre Y. Julien; Drew C. Baird

    2009-01-01

    Successive reaches of the Rio Grande have maintained equivalent channel widths of 50 and 250 m, respectively, over long periods of time. It is hypothesized that alluvial channels adjust bed slope to match the long-term changes in channel width. Analytical relationships show that wider river reaches develop steeper slopes. A modeling approach using daily water and...

  16. Analyzing the economics of tamarisk in the Pecos, Rio Grande, and Colorado River Watersheds

    Treesearch

    Joseph W. Lewis; Allen Basala; Erika Zavaleta; Douglas L. Parker; John Taylor; Mark Horner; Christopher Dionigi; Timothy Carlson; Samuel Spiller; Frederick Nibling

    2006-01-01

    The potential economic effects of tamarisk (saltcedar), and the costs and benefits associated with controlling tamarisk infestations are being evaluated on the Pecos, Rio Grande, and Colorado River watersheds. Resource impacts analyzed include water, wildlife habitat, and fire risk. The extent of existing infestations will be quantified and projected over the next 30...

  17. Poverty in the Lower Rio Grande Valley of Texas: Historical and Contemporary Dimensions.

    ERIC Educational Resources Information Center

    Miller, Michael V.; Maril, Robert Lee

    Relative to other urbanized areas, the Lower Rio Grande Valley of Texas consistently ranks at the bottom in regard to almost every objective indicator of socioeconomic welfare: per capita income, educational attainment, employment, and health and housing conditions. The 1970 census discovered that approximately one-half of its population,…

  18. Environmental Degradation in a Dependent Region: The Rio Grande Valley of Mexico and Texas.

    ERIC Educational Resources Information Center

    Jones, Richard C.

    1999-01-01

    Traces the interrelationships among dependence, environmental degradation, and human health in the Rio Grande Valley of Mexico and Texas. Presents a case study on environmental factors threatening family health in households located on both sides of the border; the health problems can be overcome by addressing restrictive zoning, health services,…

  19. Trace element characteristics of lithospheric and asthenospheric mantle in the Rio Grande rift region

    SciTech Connect

    Perry, F.V.

    1994-06-01

    Trace element analyses of 10 mafic volcanic rocks from the Colorado Plateau transition zone, Colorado Plateau, Rio Grande rift, and Great Plains were obtained to characterize the trace element characteristics of asthenospheric and lithospheric mantle beneath these regions. Characterization of these mantle reservoirs using the trace element contents of basalts allows one to track the response of the lithosphere to continental rifting and extension.

  20. Bird migration through Middle Rio Grande riparian forests, 1994 to 1997

    Treesearch

    Michael D. Means; Deborah M. Finch

    1999-01-01

    Expanding human populations in the middle Rio Grande have increased demands on water, land, and other resources, potentially disrupting bird migration activities. From 1994 to 1997, a total of 26,350 birds of 157 species were banded and studied. Results include species composition, timing of migration, and habitat use. Recommendations for managers are included.

  1. First records of the Brown Creeper breeding along the middle Rio Grande in central New Mexico

    Treesearch

    Jean-Luc E. Cartron; David L. Hawksworth; Deborah M. Finch

    2008-01-01

    In New Mexico, the Brown Creeper (Certhia americana) typically breeds in montane coniferous forests ranging in elevation from 2100 to 3300 m (Ligon 1961, Hubbard 1978). Since 2003, however, we have also noted breeding in the riparian cottonwood forest (hereafter bosque) along the middle Rio Grande, in the south valley of Albuquerque, Bernalillo...

  2. Wildfire, Exotic Vegetation, and Breeding Bird Habitat in the Rio Grande Bosque

    Treesearch

    D. Max Smith; Jeff F. Kelly; Deborah M. Finch

    2006-01-01

    Wildfires in the Middle Rio Grande bosque have likely increased in frequency due to absence of the natural flood regime and current drought conditions. Native cottonwoods (Populus spp.) do not tolerate or recover from wildfire as well as exotic vegetation, particularly salt cedar, also known as tamarisk (Tamarix spp.). There is...

  3. Restoration and monitoring in the Middle Rio Grande Bosque: Current status of flood pulse related efforts

    Treesearch

    Clifford S. Crawford; Lisa M. Ellis; Daniel Shaw; Nancy E. Umbreit

    1999-01-01

    Extensive regulation of the Middle Rio Grande's natural flow regime, together with the effects of introduced tree species, landscape fragmentation, and increasing wildfires, are obstacles for any level of restoration of its native riparian forest (bosque). However, carefully monitored partial restoration is possible and greatly needed to prevent the bosque's...

  4. Magnetotelluric data in the middle Rio Grande basin, Albuquerque volcanoes, New Mexico

    USGS Publications Warehouse

    Williams, Jackie M.; Rodriguez, Brian D.

    2002-01-01

    The population in the Albuquerque-Santa Fe region of New Mexico is rapidly growing. The Santa Fe Group aquifer in the Middle Rio Grande Basin is the main source of municipal water for the greater Albuquerque metropolitan area. The capacity of this aquifer is more limited than previously thought (Thorn et al., 1993). The Middle Rio Grande Basin, as defined hydrologically and used here, is the area within the Rio Grande Valley extending from Cochiti Dam downstream to the community of San Acacia (Figure 1). Because approximately 600,000 people (40 percent of the population of New Mexico) live in the study area (Bartolino, 1999), water shortfalls could have serious consequences. Future growth and land management in the region depends on accurate assessment and protection of the region’s groundwater resources. An important issue in defining the ground water resources is a better understanding of the hydrogeology of the Santa Fe Group and the other sedimentary deposits that fill the Rio Grande rift.

  5. Magnetic Investigation of Ancestral Puebloan Rio Grande (New Mexico) Glaze Wares

    NASA Astrophysics Data System (ADS)

    Dyer, J. B.; Geissman, J. W.; Ramenofsky, A. F.

    2007-12-01

    In geologically heterogeneous regions, such as the Rio Grande, archaeologists typically rely on petrographic analyses to determine ceramic provenance and reconstruct prehistoric trade patterns. Even in these regions, other methods are useful for elucidating trade patterns and/or resolving ambiguities from the petrographic data. Magnetic properties of Ancestral central Rio Grande Puebloan ceramics are being acquired to assess their use in identifying provenance, trade patterns, composition, manufacturing techniques, and firing conditions of ceramics, before and during the early European contact period (ca. A.D. 1325-1700) in New Mexico. Similar to the study of Moskowitz et al. (1987), we use a combination of bulk susceptibility, NRM, ARM, and SIRM intensity, AF response by NRM, ARM, and SIRM, thermal demagnetization of NRM and SIRM, and coercivity of remanence, to study temporal change in Rio Grande glaze wares from four archaeological sites in the northern Rio Grande (approximately 90 sherds per site). Rio Grande glaze wares were widely traded among Ancestral Puebloan groups before and during the European contact period. The ceramics are from the two earliest Spanish administrative centers in New Mexico, San Gabriel del Yungue and Palace of the Governors, and two mission pueblos, Pecos Pueblo and San Marcos Pueblo. Magnetic property data are being compared with petrographic observations to test the effectiveness of several magnetic measurements to identify, among other things, ceramic provenance. A tentative observation in our study is that bulk susceptibility values correlate with different ceramic provenances. The mean bulk susceptibility values for Galisteo Basin ceramics, tempered with augite monzonite and hornblende latite, are significantly higher (5.56E-04 and 4.91E-04 SI mass, respectively) than those for Pajarito Plateau ceramics, tempered with glassy tuff, tuff rocks, and andesite, (1.79E-04, 2.53E-04, and 2.58E-04 SI mass, respectively). This study is

  6. Social, political, and institutional setting: Water management problems of the Rio Grande

    USGS Publications Warehouse

    Douglas, A.J.

    2009-01-01

    This paper discusses various water management issues facing federal, state, and local agencies charged with managing the water resources of the Rio Grande River Basin and its major tributaries. The Rio Grande - 3,058 km (=1,900 mi) long - is the fourth longest river in the United States. The river's basin is 870,236 km2 (=336,000 mi2) and for roughly two-thirds of its length it forms the United States-Mexican border. It is a major recreational resource providing world class trout fishing near its headwaters in Colorado's San Juan Mountains and shoreline, angling, and boating opportunities near the Colorado-New Mexico border. The Rio Grande is the principal tourist attraction of Big Bend National Park and flows through downtown Albuquerque and El Paso. Many reaches are wide and broad, but almost all are relatively shallow and not navigable by commercial ships. Nevertheless, it is one of the most important renewable water resources of the southwestern United States and North America. The issue of the "manageability" of the river in the face of social forces and disparate administrative jurisdictions that adversely impact Rio Grande flows is a thread linking various sections of the paper together. The length of the river; the fact that major reaches lie in Colorado, New Mexico, and Texas; and its unique role as an international boundary pose complex management problems. The allocation status quo formed by the complex nexus of existing river laws make it difficult to reshape Rio Grande management. ?? 2009 ASCE.

  7. The Geomorphometrics of the Rio Grande Rift: The role of tectonics, climate, and erosional processes in forming the Rio Grande river

    NASA Astrophysics Data System (ADS)

    Berry, M. A.; van Wijk, J.; Emry, E.; Axen, G. J.; Coblentz, D. D.

    2016-12-01

    Geomorphometrics provides a powerful tool for quantifying the topographic fabric of a landscape and can help with correlating surface features with underlying dynamic processes. Here we use a suite of geomorphometric metrics (including the topographic power spectra, fabric orientation/organization) to compare and contrast the geomorphology of two of the world's major rifts, the Rio Grande Rift (RGR) in western US and the East Africa Rift (EAR). The motivation for this study is the observation of fundamental differences between the characteristics of the intra-rift river drainage for the two rifts. The RGR consists of a series of NS trending rift basins, connected by accommodation or transfer zones. The Rio Grande river developed in the late Neogene, and follows these rift segments from the San Luis basin in Colorado to the Gulf of Mexico. Before the river system formed, basins are thought to have formed internally draining systems, characterized by shallow playa lakes. This is in contrast with lakes in the Tanganyika and Malawi rifts of the East African Rift that are deep and have existed for >5 My. We investigate the role of climate, tectonics and erosional processes in the formation of the through-going Rio Grande river. This occurred around the time of a slowing down of rift opening ( 10 Ma), but also climatic changes in the southwestern U.S. have been described for the late Neogene. To model our hypothesis, a tectonics and surface transport code TISC (Transport, Isostasy, Surface Transport, Climate) was used to evaluate the dynamics of a series of proto-rift basins and their connecting accommodation zones. Basin infill and drainage system development are studied as a result of varying sediment budgets, climate variables, and rift opening rate.

  8. On-site evaluation of the suitability of a wetted instream habitat in the Middle Rio Grande, New Mexico, for the Rio Grande silvery minnow (Hybognathus amarus)

    USGS Publications Warehouse

    2011-01-01

    Two in-situ exposure studies were conducted with the federally-listed endangered Rio Grande silvery minnow (Hybognathus amarus). One-year-old adults were exposed in cages deployed at three sites in the Middle Rio Grande, N. Mex., for 4 days to assess survival and for 26 days to evaluate survival, growth, overall health, and whole-body elemental composition. The test sites were located on the Pueblo of Isleta in the (1) main channel of the Middle Rio Grande, (2) 240-Wasteway irrigation return drain, and (3) wetted instream habitat created below the outfall of the 240-Wasteway irrigation return drain. During the cage exposures, temperature, dissolved oxygen, pH, conductivity, and turbidity were monitored continuously (15-minute intervals) and common constituents, nutrients, carbons, metals, and pesticides were measured at discrete intervals. In both studies, there were statistical differences in several water-quality parameters among sites; and except for turbidity, these differences were small and were not considered to be biologically significant. The cages used in the 4-day exposure study were ineffective at preventing access to the fish by predators, and survival was highly variable (20 percent to 90 percent) across sites. In the 26-day chronic exposure study, weight and condition factor of caged-exposed fish at all sites were significantly lower than those at test initiation. After 26 days of exposure, there were no significant differences in survival, total length, weight, or condition factor of fish across sites, but absolute weight loss and relative reduction in condition factor were significantly greater in fish at the wetted instream habitat site compared to those at the Middle Rio Grande site. There were no statistical differences in health assessment indices, mesenteric fat indices, or prevalence of abnormalities in cage-exposed fish among sites. Cage-exposed fish had higher health assessment indices and prevalence of fin anomalies and a lower mesenteric

  9. Cenozoic thermal, mechanical and tectonic evolution of the Rio Grande rift

    NASA Technical Reports Server (NTRS)

    Morgan, P.; Seager, W. R.; Golombek, M. P.

    1986-01-01

    Two areas of New Mexico which exhibit complex but similar Cenozoic histories of extensional tectonism are analyzed. The first study area is the Basin and Range province and southern Rio Gande rift in southern New Mexico; the second study area is the central Rio Grande rift in central and northern New Mexico, the southern San Luis basin, the Espanola basin, and the Albuquerque basin. Two phases of extension were identified: the first phase which began in mid-Oligocene was characterized by local high-strain extension events, low-angle faulting, and the development of broad, shallow basins, all indicating an approximately NE-SW + or - 25 deg extension direction; the later phase which occurred primarily in the late Miocene, was characterized by synchronous, high-angle faulting, resulting in large vertical strains which produced the modern Rio Grande rift morphology. Extension direction was approximately E-W. Geotherms were estimated and lithospheric strength curves were calculated for these two phases of extension. A high geotherm was deduced for the early phase resulting in a shallow crustal brittle transition, and insignificant mantle strength. The lithosphere subsequently cooled, resulting in a significant zone of mantle strength beneath the Moho. It is concluded that the interrelationship among regional and local prerifting, synrifting, and postrifting events in the Rio Grande rift attests to the fact that the rifting (in the region studied) should be considered in the context of other geologic events.

  10. Tectonic rotations within the Rio Grande rift - Evidence from paleomagnetic studies

    NASA Technical Reports Server (NTRS)

    Brown, L. L.; Golombek, M. P.

    1985-01-01

    Paleomagnetic studies on Miocene Pliocene volcanic rocks from the Espanola basin of the Rio Grande rift, New Mexico, reveal directions discordant form the expected mean direction for North America. The Paliza Canyon Formation, Tschicoma Formation, and Lobato Basalt, all sampled in the Jemez Mountains west of the Pajarito fault zone, have mean declinations east of the expected mean. The Cerros del Rio volcanics, lying east of the Pajarito fault zone, have a westerly declination. Combined with published data on the Santa Fe Group sediments east of the fault zone, and the Valles Rhyolite, west of the fault zone, distinct rotations of the two areas are evident. The western block has rotated clockwise 12 deg, while the eastern block shows 16 deg of conter-clockwise motion. Differential rotations of 25-30 deg are calculated between the two blocks; 4 deg/m.y. is the minimum differential rotation for the past 5 m.y. Geologic explanations for these rotations include the opening of the Rio Grande rift in response to clockwise rotation of the Colorado Plateau and significant left slip along the Rio Grande rift.

  11. Ammonia modeling for assessing potential toxicity to fish species in the Rio Grande, 1989-2002.

    PubMed

    Passell, Howard D; Dahm, Clifford N; Bedrick, Edward J

    2007-10-01

    Increasing volumes of treated and untreated human sewage discharged into rivers around the world are likely to be leading to high aquatic concentrations of toxic, unionized ammonia (NH3), with negative impacts on species and ecosystems. Tools and approaches are needed for assessing the dynamics of NH3. This paper describes a modeling approach for first-order assessment of potential NH3 toxicity in urban rivers. In this study daily dissolved NH3 concentrations in the Rio Grande of central New Mexico, USA, at the city of Albuquerque's treated sewage outfall were modeled for 1989-2002. Data for ammonium (NH4+) concentrations in the sewage and data for discharge, temperature, and pH for both sewage effluent and the river were used. We used State of New Mexico acute and chronic NH3- N concentration values (0.30 and 0.05 mg/L NH3-N, respectively) and other reported standards as benchmarks for determining NH3 toxicity in the river and for assessing potential impact on population dynamics for fish species. A critical species of concern is the Rio Grande silvery minnow (Hybognathus amarus), an endangered species in the river near Albuquerque. Results show that NH3 concentrations matched or exceeded acute levels 13%, 3%, and 4% of the time in 1989, 1991, and 1992, respectively. Modeled NH3 concentrations matched or exceeded chronic values 97%, 74%, 78%, and 11% of the time in 1989, 1991, 1992, and 1997, respectively. Exceedences ranged from 0% to 1% in later years after enhancements to the wastewater treatment plant. Modeled NH3 concentrations may differ from actual concentrations because of NH3 and NH4+ loss terms and additive terms such as mixing processes, volatilization, nitrification, sorbtion, and NH4+ uptake. We conclude that NH3 toxicity must be considered seriously for its potential ecological impacts on the Rio Grande and as a mechanism contributing to the decline of the Rio Grande fish community in general and the Rio Grande silvery minnow specifically

  12. Quantifying Ichthyofaunal Zonation and Species Richness along a 2800 km Reach of the Rio Chama and Rio Grande (U.S.A.)

    EPA Science Inventory

    Ichthyofaunal zonation occurs when lotic fishes are partitioned into distinct assemblages, usually in response to longitudinally distributed habitats. Several studies have documented zonation within the Rio Grande, but this is the first to quantitatively test the zonation hypothe...

  13. RiSA: A Science Festival for the Bilingual and Bicultural Rio Grande Valley

    NASA Astrophysics Data System (ADS)

    Key, Joey Shapiro; Torres, Cristina; Stone, Robert

    2014-03-01

    The Rio Grande Science and Arts (RiSA) Festival organized by the Center for Gravitational Wave Astronomy (CGWA) at the University of Texas at Brownsville (UTB) will use a wide variety of artforms to bring physics and science topics to the bilingual and bicultural population of the Rio Grande Valley of South Texas. The science and art faculty at UTB will partner with art and education professionals to create an annual community event celebrating science though art. Music, dance, poetry, and visual arts will headline the festival activities. Festival events and products will be produced in both English and Spanish to attract and inform the bilingual local community. The RiSA Festival is supported by the Science Festival Alliance and the Sloan Foundation. Supported by the Science Festival Alliance and the Sloan Foundation.

  14. [Positivism and medical science in Rio Grande do Sul: the Faculdade de Medicina de Porto Alegre].

    PubMed

    Weber, B T

    1998-01-01

    The article analyzes conflicts and interests at one of Rio Grande de Sul's main centers for medical science, the Faculdade de Medicina de Porto Alegre. It explores the meaning and impact of the emergence of this specific, exclusive field of knowledge in a state where positivist principles of professional freedom were adopted by successive administrations during the early period of the Republic. Physicians there launched an entrenched war to uphold the principles of science over faith and politics, challenging the positivism of the party which held power in Rio Grande do Sul throughout the years. This perspective grew and developed in a climate of conflict and doubts among physicians, within a political context that differed from the rest of Brazil.

  15. Geohydrology of White Rock Canyon of the Rio Grande from Otowi to Frijoles Canyon

    SciTech Connect

    Purtymun, W.D.; Peters, R.J.; Owens, J.W.

    1980-12-01

    Twenty-seven springs discharge from the Totavi Lentil and Tesuque Formation in White Rock Canyon. Water generally acquires its chemical characteristics from rock units that comprise the spring aquifer. Twenty-two of the springs are separated into three groups of similar aquifer-related chemical quality. The five remaining springs make up a fourth group with a chemical quality that differs due to localized conditions in the aquifer. Localized conditions may be related to recharge or discharge in or near basalt intrusion or through faults. Streams from Pajarito, Ancho, and Frijoles Canyons discharge into the Rio Grande in White Rock Canyon. The base flow in the streams is from springs. Sanitary effluent in Mortandad Canyon from the treatment plant at White Rock also reaches the Rio Grande.

  16. Rhipicephalus sanguineus sensu lato (Ixodidae) in synantropic rodents in Rio Grande do Sul, Brazil.

    PubMed

    Winkel, Kathleen Tavares; Ribeiro, Paulo Bretanha; Antunes, Lidiane Oliveira; Cárcamo, Marcial Corrêa; Vianna, Elvia Elena Silveira

    2014-01-01

    Rhipicephalus sanguineus, the brown dog tick, is responsible for maintaining and transmitting various pathogens, both in animals and human beings, and it is of great sanitary importance. This communication reports the first occurrence of Rhipicephalus sanguineus sensu lato parasitizing Rattus norvegicus in the state of Rio Grande do Sul, Brazil, and it is also the first record of this tick species parasitizing Rattus rattus in Brazil. The rodents were captured from the port area, located in the city of Pelotas, Rio Grande do Sul, Brazil. We collected 6 larvae of this tick species from 2 male R. rattus individuals, and 3 larvae from 2 female R. norvegicus individuals; parasitized specimens of both rodent species were captured from different sites within the experimental area. This record broadens the number of Rhipicephalus sanguineus sensu lato hosts in urban areas, indicating the need for continued monitoring on population density for both R. sanguineus and synanthropic rodents.

  17. Rhipicephalus sanguineus (ACARI: IXODIDAE) BITING A HUMAN BEING IN PORTOALEGRE CITY, RIO GRANDE DO SUL, BRAZIL

    PubMed Central

    MENTZ, Márcia Bohrer; TROMBKA, Marcelo; da SILVA, Guilherme Liberato; SILVA, Carlos Eugênio

    2016-01-01

    We report the finding of a female brown dog tick, Rhipicephalus sanguineus (Acari: Ixodidae) on the scalp of a male patient in Porto Alegre, Rio Grande do Sul, Brazil. Human parasitism by this tick is rare and has seldomly been reported in the literature, despite its recognized importance since it can act as a vector of Rickettsia rickettsii, the agent of spotted fever. PMID:27074329

  18. Abundance and species richness of snakes along the Middle Rio Grande riparian forest in New Mexico

    Treesearch

    Heather L. Bateman; Alice Chung-MacCoubrey; Howard L. Snell; Deborah M. Finch

    2009-01-01

    To understand the effects of removal of non-native plants and fuels on wildlife in the riparian forest of the Middle Rio Grande in New Mexico, we monitored snakes from 2000 to 2006 using trap arrays of drift fences, pitfalls, and funnel traps. We recorded 158 captures of 13 species of snakes from 12 study sites. We captured more snakes in funnel traps than in pitfalls...

  19. Evolution of the central Rio Grande rift, New Mexico: New potassium-argon ages

    NASA Astrophysics Data System (ADS)

    Baldridge, W. S.; Damon, P. E.; Shafiqullah, M.; Bridwell, R. J.

    1980-12-01

    New K sbnd Ar age determinations on mid-Oligocene to Pleistocene volcanic and shallow intrusive rocks from the central Rio Grande rift permit a more detailed understanding of the tectonic and magmatic history of the rift. Initial extension in the region of the central rift may have begun prior to 27 m.y. ago. By 25 m.y. ago broad basins existed and were filling with volcaniclastic sediments derived mainly from volcanic centers in the San Juan and Questa areas. Continued tectonic activity narrowed these basins by 21-19 m.y. ago, indicated in the Santa Fe area by tilting and faulting that immediately postdate 20-m.y.-old latite. Uplift of the Sangre de Cristo, Sandia, and Nacimiento Mountains shed clastic debris of the Santa Fe Group into these basins. Early rift magmatism is characterized by an overlap of mid-Tertiary intermediate intrusive and extrusive activity, extending to 20 m.y. ago, with mafic and ultramafic volcanism, ranging from 25 to 19 m.y. Both volcanism and tectonic activity were minimal during the middle Miocene. About 13 m.y. ago renewed volcanic activity began. Tectonism commenced in the late Miocene, resulting in the present, narrow grabens. The term "Rio Grande rift" should be restricted to these grabens formed during post-mid-Miocene deformation. Widespread eruption of tholeiitic and alkali olivine basalts occurred 3-2 m.y. ago. The Rio Grande drainage system was integrated 4.5-3 m.y. ago, leading to the present erosional regime. These intervals of deformation and magmatism correspond generally with a similar sequence of events in the Basin and Range province south of the Colorado Plateau. This similarity indicates that the Rio Grande rift is not a unique structure in the southwestern U.S., and must be related to the larger context of the entire Basin and Range province.

  20. Poverty and Problems of Development in the Lower Rio Grande Valley of Texas.

    ERIC Educational Resources Information Center

    Miller, Michael V.

    Bounded on the west and south by Mexico and to the east by the Gulf, the Lower Rio Grande Valley of Texas is separated from the nearest U.S. urban center of any size by miles of flat and arid brushland. Its total population of approximately 335,000 is essentially composed of 2 groups--Mexican Americans and Anglos. Although the region is one of the…

  1. Poverty and Problems of Development in the Lower Rio Grande Valley of Texas.

    ERIC Educational Resources Information Center

    Miller, Michael V.

    Bounded on the west and south by Mexico and to the east by the Gulf, the Lower Rio Grande Valley of Texas is separated from the nearest U.S. urban center of any size by miles of flat and arid brushland. Its total population of approximately 335,000 is essentially composed of 2 groups--Mexican Americans and Anglos. Although the region is one of the…

  2. A Survey of the Invasive Aquatic and Riparian Plants of the Lower Rio Grande

    DTIC Science & Technology

    2005-04-01

    monocultures in many areas. In 2001 and 2003, surveys were conducted starting below Amistad Reservoir to immediately below Falcon Reservoir to assess...management programs to inhibit further new infestations locally and downstream. In 2001, 20 sites on the Rio Grande River were surveyed from Amistad Reservoir...the 2001 survey, hydrilla was found in Amistad Reservoir and below Falcon Reservoir. In August 2002, hydrilla fragments were observed in plant

  3. Wild animals as sentinels of Paracoccidioides brasiliensis in the state of Rio Grande do Sul, Brazil.

    PubMed

    Albano, A P N; Klafke, G B; Brandolt, T M; Da Hora, V P; Minello, L F; Jorge, S; Santos, E O; Behling, G M; Camargo, Z P; Xavier, M O; Meireles, M C A

    2014-04-01

    Paracoccidioides brasiliensis, a dimorphic pathogenic fungus, causes the principal form of systemic mycosis in Brazil. The literature furnishes only limited data on the ecology of this fungus in the state of Rio Grande do Sul, the southernmost state of Brazil. The purpose of this study was to evaluate the prevalence of fungal infection in wild animals, using serological tests and using the animals as sentinels of the presence of P. brasiliensis in three specified mesoregions of Rio Grande do Sul. A total of 128 wild animals from the three mesoregions were included in the study. The serum samples were evaluated by immunodiffusion and the enzyme-linked immunosorbent assay (ELISA) technique to detect anti-gp43 antibodies from P. brasiliensis. Two conjugates were tested and compared with the ELISA technique. Although no positive samples were detected by immunodiffusion, 26 animals (20%), belonging to 13 distinct species, were found to be seropositive by the ELISA technique. The seropositive animals were from two mesoregions of the state. The results were similar according to the gender, age, and family of the animals, but differed significantly according to the conjugate used (p < 0.001), showing more sensitivity to protein A-peroxidase than to protein G-peroxidase. The finding that wild animals from the state of Rio Grande do Sul are exposed to P. brasiliensis suggests that the fungus can be found in this region despite the often-rigorous winters, which frequently include below-freezing temperatures.

  4. Integrated hydrologic modeling of a transboundary aquifer system —Lower Rio Grande

    USGS Publications Warehouse

    Hanson, Randall T.; Schmid, Wolfgang; Knight, Jacob E.; Maddock, Thomas

    2013-01-01

    For more than 30 years the agreements developed for the aquifer systems of the lower Rio Grande and related river compacts of the Rio Grande River have evolved into a complex setting of transboundary conjunctive use. The conjunctive use now includes many facets of water rights, water use, and emerging demands between the states of New Mexico and Texas, the United States and Mexico, and various water-supply agencies. The analysis of the complex relations between irrigation and streamflow supplyand-demand components and the effects of surface-water and groundwater use requires an integrated hydrologic model to track all of the use and movement of water. MODFLOW with the Farm Process (MFFMP) provides the integrated approach needed to assess the stream-aquifer interactions that are dynamically affected by irrigation demands on streamflow allotments that are supplemented with groundwater pumpage. As a first step to the ongoing full implementation of MF-FMP by the USGS, the existing model (LRG_2007) was modified to include some FMP features, demonstrating the ability to simulate the existing streamflow-diversion relations known as the D2 and D3 curves, departure of downstream deliveries from these curves during low allocation years and with increasing efficiency upstream, and the dynamic relation between surface-water conveyance and estimates of pumpage and recharge. This new MF-FMP modeling framework can now internally analyze complex relations within the Lower Rio Grande Hydrologic Model (LRGHM_2011) that previous techniques had limited ability to assess.

  5. Finite element analysis of the I-40 bridge over the Rio Grande

    SciTech Connect

    Farrar, C.R.; Duffey, T.A.; Goldman, P.A.; Jauregui, D.V.; Vigil, J.S.

    1996-01-01

    In the 1960s and 1970s numerous bridges were built in the US with a design similar to those on Interstate 40 (I-40) over the Rio Grande in Albuquerque, New Mexico. The Federal Highway Administration (FHWA) and the National Science Foundation (NSF) have provided funds to New Mexico State University (NMSU) through the New Mexico State Highway and Transportation Department (NMSH and TD) and The Alliance For Transportation Research (ATR) for evaluation and testing of the existing fracture-critical bridges over the Rio Grande. Because the I-40 Bridges over the Rio Grande were to be razed during the summer of 1993, the investigators were able to introduce damage into the structure in order to test various damage identification methods and to observe the changes in load paths through the structure caused by the cracking. To support this research effort, NMSU contracted Los Alamos National Laboratory (LANL) to perform experimental modal analyses, and to develop experimentally verified numerical models of the bridge. A previous report (LA-12767-MS) summarizes the results of the experimental modal analyses. This report summarizes the numerical analyses of the bridges and compares the results of these analyses to the experimental results.

  6. Tectonic controls on the hydrogeology of the Rio Grande Rift, New Mexico

    NASA Astrophysics Data System (ADS)

    Mailloux, Brian J.; Person, Mark; Kelley, Shari; Dunbar, Nelia; Cather, Steve; Strayer, Luther; Hudleston, Pater

    1999-09-01

    Mathematical modeling is used in this study to assess how tectonic movement of fault blocks and fault permeability influence the present-day and paleohydrogeology of the Rio Grande Rift near Socorro, New Mexico. Our analysis focuses on active and ancient groundwater flow patterns and hot spring development within the southern La Jencia and Socorro subbasins. The best agreement between model results and present-day and paleoheat flow data was achieved by representing faults as passive surfaces and incorporating 2 km of moderately permeable (10-14.0 m2) fractured crystalline rocks into the hydrogeologic model. Quantitative results indicate that changes in groundwater flow patterns across the basin are primarily generated by the truncation/reconnection of aquifers and confining units. Calculated flow patterns help to explain the annealing of apatite fission tracks within Eocene Baca Formation clasts to the east of Socorro, potassium metasomatism mass balance constraints within Oligocene volcanics and overlying Santa Fe Group deposits, and the timing of barite/fluorite ore mineralization within the Gonzales prospect on the eastern edge of the Rio Grande Rift. We estimate that about 5% of mountain front recharge penetrates to a depth of 2.8 km below the sedimentary pile. This may have implications for water resource planners who have historically focused on groundwater resource development within the shallow alluvial deposits along the Rio Grande Rift valley.

  7. DIETARY CHARACTERIZATIONS IN A STUDY OF HUMAN EXPOSURES IN THE LOWER RIO GRANDE VALLEY: I. FOODS AND BEVERAGES

    EPA Science Inventory

    The Lower Rio Grande Valley Environmental Study (LRGVES), a cooperative effort between various federal and state agencies, responded to concerns of the local community about possible adverse health effects related to environmental conditions. The LRGVES pilot project, conducted d...

  8. DIETARY CHARACTERIZATIONS IN A STUDY OF HUMAN EXPOSURES IN THE LOWER RIO GRANDE VALLEY: I. FOODS AND BEVERAGES

    EPA Science Inventory

    The Lower Rio Grande Valley Environmental Study (LRGVES), a cooperative effort between various federal and state agencies, responded to concerns of the local community about possible adverse health effects related to environmental conditions. The LRGVES pilot project, conducted d...

  9. Study for establishment of the Rio Grande Communications Network connecting federal, state and private facilities in New Mexico

    SciTech Connect

    Heflin, W.H.

    1985-04-30

    Prime objective of NMT Inc. is the facilitation of technological transfer out of the Federal Laboratories at Sandia and Los Alamos to the universities and private sector companies, thereby attracting additional high-technology company programs to locate within the Rio Grande Research Corridor. This was to be done by NMT Inc.'s owning and operating the Rio Grande Communication Network (RGCN). The first interface requirements for the proposed first service offering of electronic mail have been outlined.

  10. Wave Attenuation on Muddy Bottoms Offshore Cassino Beach

    DTIC Science & Technology

    2006-10-01

    hypothesized that the mud deposit offshore Cassino Beach is formed by deposition of fine sediments flushing from Patos Lagoon. Fine sediments originated in...5-8m/s) and low fresh water discharges. Figure 1a: Finite element mesh for the 2DH hydrodynamic model: dos Patos Lagoon and adjacent coastal area...Figure 2: The Patos Lagoon system flushing sediments out of the mouth (Modis image) In this proposal, support is

  11. Residues of toxaphene in insectivorous birds (Petrochelidon spp.) from the Rio Grande, Texas.

    PubMed

    Maruya, K A; Smalling, K L; Mora, M A

    2005-05-01

    Although it has been documented that wildlife in the Rio Grande Valley (RGV) contain increased concentrations of organochlorine (OC) contaminants, particularly DDE, little has been published on residues of toxaphene throughout this major North American watershed. In this study, 28 liver composites from adult swallows (Petrochelidon spp.) collected along the Rio Grande from 1999 through 2000 were analyzed for toxaphene residues using congener-specific gas chromatography-electron-capture negative ionization-mass spectrometry. Estimated total toxaphene concentrations ranged from 12 to 260 ng/g wet wt and were highest in samples from the lower RGV near Llano Grande Lake in Hidalgo and Cameron counties (Texas). Toxaphene congener profiles were relatively invariant throughout the watershed and were dominated by 2,2,5-endo,6-exo,8,8,9,10-octachlorobornane (P-42a or B8-806) with lesser amounts of several other Cl(7)-Cl(9) compounds, many of which remain unidentified. Petrochelidon spp. liver profiles appear to be intermediate in complexity between those in invertebrates and fish (more complex) and mammals (less complex) and differs somewhat from those reported for other avian species. In addition to other legacy OC contaminants, toxaphene residues were most concentrated in the lower RGV and accumulated at up to hundreds of parts per billion in these insect-eating birds, underscoring their utility as avian bioindicators of persistent organic pollutants.

  12. Residues of toxaphene in insectivorous birds (Petrochelidon spp.) from the Rio Grande, Texas

    USGS Publications Warehouse

    Maruya, K.A.; Smalling, K.L.; Mora, M.A.

    2005-01-01

    Although it has been documented that wildlife in the Rio Grande Valley (RGV) contain increased concentrations of organochlorine (OC) contaminants, particularly DDE, little has been published on residues of toxaphene throughout this major North American watershed. In this study, 28 liver composites from adult swallows (Petrochelidon spp.) collected along the Rio Grande from 1999 through 2000 were analyzed for toxaphene residues using congener-specific gas chromatography–electron-capture negative ionization–mass spectrometry. Estimated total toxaphene concentrations ranged from 12 to 260 ng/g wet wt and were highest in samples from the lower RGV near Llano Grande Lake in Hidalgo and Cameron counties (Texas). Toxaphene congener profiles were relatively invariant throughout the watershed and were dominated by 2,2,5-endo,6-exo,8,8,9,10-octachlorobornane (P-42a or B8-806) with lesser amounts of several other Cl7-Cl9 compounds, many of which remain unidentified. Petrochelidon spp. liver profiles appear to be intermediate in complexity between those in invertebrates and fish (more complex) and mammals (less complex) and differs somewhat from those reported for other avian species. In addition to other legacy OC contaminants, toxaphene residues were most concentrated in the lower RGV and accumulated at up to hundreds of parts per billion in these insect-eating birds, underscoring their utility as avian bioindicators of persistent organic pollutants.

  13. Water resources of the Rio Grande de Anasco lower valley, Puerto Rico

    USGS Publications Warehouse

    Diaz, Jose Raul; Jordan, Donald G.

    1987-01-01

    A large amount of water suitable for most uses is available in the lower Rio Grande de Anasco Valley, the major source of which is the Rio Grande de Anasco which contributes about 95% of the surface water inflow to the lower valley. River flow at El Espino exceeds 100 cu ft/sec about 85% of the time and 200 cu ft/sec 50% of the time. Average daily flow for the driest months of the year (February, March, and April), is almost always <100 cu ft/sec. In contrast, the average daily flow for the wettest, months of the year (September, October, and November), is > 120 cu ft/sec. During the study period, flows of the Rio Canas averaged about 5 cu ft/sec. The lower valley is underlain by igneous rocks that have been eroded to depths of 350 ft or more below sea level. The valley is filled with 250 ft or more of limestone and clay, that in turn is overlain by as much as 100 ft of alluvium. The amount of groundwater available is unknown. There are large volumes of water in the saturated mostly fine-grained alluvium of Zone II, but as a whole the alluvium does not yield water readily to wells. Sand and gravel deposits associated with former river channels yield an estimated 100 to 150 gal/min to wells. The principal source of groundwater is the limestone of Zone III, that reportedly yields as much as 500 gal/min to wells. The quality of surface water especially that of Rio Grande de Anasco was very good. Specific conductance seldom exceeds 250 microsiemens/cm, even at low flows. Both salinity and sodium are low, falling in the Cl-S1 irrigation water classification. Water quality in the lower 5,000 ft or so of the river was affected by saltwater encroachment from the sea. The water quality of the other streams and canals in the lower valley was variable depending on susceptibility of saltwater encroachment, contamination from man-made sources, and concentration of minerals by evapotranspiration. Specific conductance however seldom exceeded 500 microsiemens/cm and the water

  14. The potential to improve water quality in the middle Rio Grande through effective wetland restoration.

    PubMed

    Rodriguez, Ruth; Lougheed, Vanessa L

    2010-01-01

    The Rio Grande, which forms the United States-Mexico border for much of its course, receives diverse pollutants from both urban and agricultural areas, most notably in the sister cities of El Paso (TX, USA)-Ciudad Juárez (CHI, Mexico). This study aimed to describe regional trends in water quality in waters near the El Paso-Ciudad Juárez metroplex and to examine the potential for water quality improvement through the use of a created wetland. Very few differences in nutrient chemistry were found among drains, canals and the Rio Grande, with the exception of elevated chloride and lower phosphorus levels found in the drains. Overall, chloride concentrations increased with distance downstream, likely due to concentration of salts via evaporation from irrigated agriculture. A wastewater treatment plant (WWTP) contributed substantially to total phosphorus and nitrate levels, which, together with ammonia, tended to exceed state criteria for water quality downstream of the WWTP outflow. The created Rio Bosque wetlands reduced nitrate concentrations in the water, possibly via denitrification enhanced by algae; algae increased in biomass as water flowed through the wetlands. However, the diversion of water for irrigated agriculture, resulting in the absence of water, and thus aquatic plants, in the wetland in the summer has limited the ability of this wetland to improve regional water quality.

  15. Channel Narrowing and Channel Reset: Effects of a Large Flood on the Vegetated, Narrowing Rio Grande

    NASA Astrophysics Data System (ADS)

    Dean, D. J.; Schmidt, J. C.

    2009-12-01

    In September 2008, heavy precipitation from a tropical storm in the Sierra Madre Occidental, MX, produced large amounts of stream flow to the Rio Conchos and lower Rio Grande. This flood was well publicized in the media due to the widespread flooding in Ojinaga, Chih., and Presidio, TX. Gage records indicate that this flood had an approximate recurrence of 15 years as measured on the Rio Grande near Presidio. Nevertheless, flood stages were the highest ever recorded and resulted from a significant loss of channel capacity due to channel narrowing that had occurred during the previous 18 years. Measurements from aerial photographs indicate that channel width had decreased between 35 and 50% between 1990 and 2008 during regional drought. During this period of low stream flow, invasion by non-native riparian vegetation (Tamarix spp., Arundo donax) helped trap sediment and promote floodplain accretion. Our resurveys of the channel indicate that the 2008 flood was a reset event and that the channel was re-widened by 32 to 48%. Repeated, oblique photographs showed significant channel migration and large scale floodplain stripping during this flood. These results show that although riparian vegetation may actively promote channel narrowing and floodplain accretion, moderately large floods may cause large scale bank erosion, floodplain stripping, and vegetation removal in alluvial valleys subject to large-scale invasion by nonnative plants.

  16. Ground-Water Resource Assessment in the Rio Grande de Manati Alluvial Plain, Rio Arriba Saliente Area, Puerto Rico

    USGS Publications Warehouse

    Torres-Gonzalez, Sigfredo; Gómez-Gómez, Fernando; Warne, Andrew G.

    2002-01-01

    The alluvial aquifer within a 160-acre area of the Rio Grande de Manati alluvial plain was investigated to evaluate its potential as a water-supply source for the Barrios Rio Arriba Saliente and Pugnado Afuera, municipio of Manati, Puerto Rico. Analysis of well boring samples and the results of electric resistivity surveys indicate that the average thickness of the unconsolidated alluvial deposits in the study area is about 100 to 110 feet. The alluvium is a mixture of sand and gravel, which generally has a porosity of 0.2 to 0.35. Short-duration pump tests in small-diameter piezometers indicate that the alluvial aquifer has a hydraulic conductivity of about 200 feet per day and a transmissivity of about 7,900 feet squared per day. Analyses of water levels in piezometers, combined with stage measurements at a series of surveyed reference points along the Rio Grande de Manati channel, indicate that the water-table gradient in the alluvial aquifer is about 0.001, and that ground-water flow is generally from south to north, in the general direction of river flow. The water-table data indicate that the Rio Grande de Manati is the principal source of ground-water recharge to the alluvial aquifer in the study area. Because base flow for the Rio Grande de Manati is usually greater than 44 cubic feet per second, a continuous withdrawal rate of 0.5 to 1.0 cubic foot per second (225 to 450 gallons per minute) from a production well is possible. Chemical analysis of a ground-water sample indicates that the alluvial aquifer water meets U.S. Environmental Protection Agency secondary standards for selected constituents. Bacteriological analysis of ground-water samples indicates that the ground water contains little or no fecal coliform or fecal streptococcus bacteria. Although long-term data from upstream of the study area indicate high levels of fecal coliform and fecal streptococcus prior to 1996, bacteriological analyses of Rio Grande de Manati water samples obtained during

  17. Streamflow and Endangered Species Habitat in the Lower Isleta Reach of the Middle Rio Grande

    USGS Publications Warehouse

    Bovee, Ken D.; Waddle, Terry J.; Spears, J. Mark

    2008-01-01

    San Acacia Dam is located in a reach of the Rio Grande that has been designated as critical habitat for two endangered species, the Rio Grande silvery minnow (Hybognathus amarus) and the southwestern willow flycatcher (Empidonax traillii extimus). Under present operations, the Rio Grande upstream from the dam is used to convey irrigation water to the Socorro main canal at San Acacia Dam. In order to increase operational flexibility and improve irrigation delivery efficiency, the 'Bernardo Siphon' has been proposed to intercept up to 150 cubic feet per second from the Lower San Juan Riverside Drain on the east side of the Rio Grande and transport it under the river into a drainage canal on the west side. Irrigation deliveries to the Socorro main canal would be conveyed by way of the drainage canal rather than the Rio Grande. The objective of this study was to provide the Bureau of Reclamation (BOR) and other stakeholders with a tool to evaluate the effects of different operational modes of the Bernardo siphon on habitat for H. amarus and E. t. extimus in this section of river. We used a two-dimensional hydraulic simulation model to simulate hydraulic conditions for a range of discharges at three study sites in the Rio Grande between the proposed siphon location and San Acacia Dam. Suitable habitat characteristics were defined for H. amarus by consensus of a panel of experts and for E. t. extimus on the basis of a study conducted in 2003 by BOR. Habitat suitability maps for each targeted life stage and simulated discharge were constructed using a Geographic Information System (ArcGIS) and the results compiled into tables relating discharge to areas of suitable habitat. A separate analysis was conducted to calculate an index of connectivity among habitat patches at low flows. A hydrologic model was constructed to synthesize flows, by reach, without the siphon, which was used as a baseline for comparison with similarly-synthesized discharges with the siphon under

  18. Sediment Supply Versus Local Hydraulic Controls on Sediment Transport and Storage in the Rio Grande in the Big Bend Region

    NASA Astrophysics Data System (ADS)

    Dean, D. J.; Topping, D. J.; Schmidt, J. C.

    2015-12-01

    The Rio Grande in the Big Bend region of Texas, USA, and Chihuahua and Coahuila, Mexico, has a large sediment supply, and a variable hydrology resulting in rapid channel narrowing during years of low mean and peak flow, and channel widening during rare, large-magnitude floods. This dynamic nature makes the Rio Grande a useful natural laboratory to investigate the relative importance of flow strength and sediment supply in controlling channel change. We analyzed a suite of sediment-transport and geomorphic data to determine the cumulative influence of different flood types on changing channel form. In this study, physically-based analyses suggest that channel change on the Rio Grande is controlled by both changes in flow strength and sediment supply over different spatial and temporal scales. Channel narrowing is primarily caused by sediment supplied to the Rio Grande during flash floods on desert tributaries. Tributary floods have large suspended-sediment concentrations, occur for short durations, and attenuate rapidly downstream in the Rio Grande, depositing much of their sediment in downstream reaches. Long-duration floods on the mainstem are the only floods that have the capacity to enlarge the Rio Grande. These floods, released from upstream dams, can either erode or deposit sediment in the Rio Grande depending upon the antecedent in-channel sediment supply and the magnitude and duration of the flood. Geomorphic and sediment-transport analyses show that sand erosion and deposition during long-duration floods are most strongly controlled by the spatial distribution of flow strength as governed by channel slope. However, temporal changes in the grain size and amount of available sand within the channel, as inferred from comprehensive analyses of suspended-sediment concentration and grain size, control the degree of sediment evacuation or accumulation over large spatial scales.

  19. Spatial and temporal variations in streamflow, dissolved solids, nutrients, and suspended sediment in the Rio Grande Valley study unit, Colorado, New Mexico, and Texas, 1993-95

    USGS Publications Warehouse

    Moore, Stephanie J.; Anderholm, Scott K.

    2002-01-01

    Streamflow and water quality vary spatially and temporally in the Rio Grande from Del Norte, Colorado, to El Paso, Texas. The variations in streamflow and in concentrations of selected waterquality constituents?dissolved solids, dissolved nitrite plus nitrate as nitrogen, total phosphorus, and suspended sediment?are described in this report. A multivariate linear regression model, ESTIMATOR2000, was used to estimate loads for selected constituents. Streamflow decreases in the downstream direction throughout most of the basin because outflows (due to agricultural use, leakage to ground water, and evapotranspiration) are greater than inflows. Streamflow increases between Rio Grande above the mouth of Trinchera Creek, near Lasauses, Colorado, to Rio Grande at Otowi Bridge, near San Ildefonso, New Mexico, because ground-water and tributary inflow are greater than outflow. Concentrations of dissolved solids, dissolved nitrite plus nitrate, total phosphorus, and suspended sediment generally increase in the downstream direction. Concentrations of dissolved solids, dissolved nitrite plus nitrate, and total phosphorus decrease between Rio Grande above the mouth of Trinchera Creek, near Lasauses, Colorado, and Rio Grande at Otowi Bridge, near San Ildefonso, New Mexico, because of dilution by tributary inflow. Concentrations of dissolved nitrite plus nitrate, total phosphorus, and suspended sediment decrease between Rio Grande Floodway at San Marcial, New Mexico, and Rio Grande below Leasburg Dam, near Leasburg, New Mexico, because of reservoir effects (nutrient uptake and settling of sediment). Several instances of decreasing streamflow and increasing loads indicate the presence of inflows with large constituent concentrations (relative to those of the Rio Grande immediately upstream from that inflow); this occurs (1) between Rio Grande near Del Norte, Colorado, and Rio Grande above the mouth of Trinchera Creek, near Lasauses, Colorado, for dissolved solids, (2) between Rio

  20. HOSPITALIZATIONS FOR CHOLECYSTITIS AND CHOLELITHIASIS IN THE STATE OF RIO GRANDE DO SUL, BRAZIL

    PubMed Central

    NUNES, Emeline Caldana; ROSA, Roger dos Santos; BORDIN, Ronaldo

    2016-01-01

    ABSTRACT Background: The cholelithiasis is disease of surgical resolution with about 60,000 hospitalizations per year in the Sistema Único de Saúde (SUS - Brazilian National Health System) of the Rio Grande do Sul state. Aim: To describe the profile of hospitalizations for cholecystitis and cholelithiasis performed by the SUS of Rio Grande do Sul state, 2011-2013. Methods: Hospital Information System data from the National Health System through morbidity list for cholelithiasis and cholecystitis (ICD-10 K80-K81). Variables studied were sex, age, number of hospitalizations and approved Hospitalization Authorizations (AIH), total amount and value of hospital services generated, days and average length of stay, mortality, mortality and case fatality ratio, from health regions of the Rio Grande do Sul. Results: During 2011-2013 there were 60,517 hospitalizations for cholecystitis and cholelithiasis, representing 18.86 hospitalizations per 10,000 inhabitants/year, most often in the age group from 60 to 69 years (41.34 admissions per 10,000 inhabitants/year) and female (27.72 hospitalizations per 10,000 inhabitants/year). The fatality rate presented an inverse characteristic: 13.52 deaths per 1,000 admissions/year for males, compared with 7.12 deaths per 1,000 admissions/year in females. The state had an average total amount spent and value of hospital services of R$ 16,244,050.60 and R$ 10,890,461.31, respectively. The health region "Capital/Gravataí Valley" exhibit the highest total expenditure and hospital services, and the largest number of deaths, and average length of stay. Conclusion: The hospitalization and lethality coefficients, the deaths, the length of stay and spending related to admissions increased from 50 years old. Females had a higher frequency and higher values ​​spent on hospitalization, while the male higher coefficient of mortality and mean hospital stay. PMID:27438030

  1. Distribution and habitat associations of juvenile Common Snook in the lower Rio Grande, Texas

    USGS Publications Warehouse

    Huber, Caleb G.; Grabowski, Timothy B.; Patino, Reynaldo; Pope, Kevin L.

    2014-01-01

    Common Snook Centropomus undecimalis were once abundant off the Texas coast, but these populations are now characterized by low abundance and erratic recruitment. Most research concerning Common Snook in North America has been conducted in Florida and very little is known about the specific biology and habitat needs of Common Snook in Texas. The primary objective of this study was to describe the habitat use patterns of juvenile Common Snook and their role in the fish assemblage in the lower portion of the Rio Grande, Texas. Secondarily, we documented the relationship between age and juvenile reproductive development. Fish were collected during January–March 2006 from the lower 51.5 km of the Rio Grande using a bottom trawl and boat-mounted electrofisher. Measurements of water quality and other habitat traits were recorded at each sampling site. We captured 225 Common Snook exclusively in freshwater habitats above river kilometer 12.9. The distribution of juvenile Common Snook was not random, but influenced primarily by turbidity and dissolved oxygen. Sex differentiation and gonadal development based on histological examination of gonads established that age-1 and age-2 Common Snook were juvenile, prepubertal males. There was no difference between the age groups in their overall distribution in the river. However, age-2 Common Snook were associated with deeper areas with faster currents, higher conductivity, and steeper banks. Overall, Common Snook in the lower Rio Grande show substantial differences in habitat use than their counterparts in other parts of the range of the species, but it is unclear whether this is due to differences in habitat availability, behavioral plasticity, or some combination thereof.

  2. Late Pleistocene landslide-dammed lakes along the Rio Grande, White Rock Canyon, New Mexico

    SciTech Connect

    Reneau, S.L.; Dethier, D.P.

    1996-11-01

    Massive slump complexes composed of Pliocene basaltic rocks and underlying Miocene and Pliocene sediments flank the Rio Grande along 16 km of northern White Rock Canyon, New Mexico. The toe area of at least one slump complex was active in the late Pleistocene, damming the Rio Grande at least four times during the period from 18 to 12 {sup 14}C ka and impounding lakes that extended 10-20 km upriver. Stratigraphic relationships and radiocarbon age constraints indicate that three separate lakes formed between 13.7 and 12.4 {sup 14}C ka. The age and dimensions of the ca. 12.4 ka lake are best constrained; it had an estimated maximum depth of {approx}30 m, a length of {approx}13 km, a surface area of {approx}2.7 km{sup 2}, and an initial volume of {approx}2.5 x 10{sup 7} m{sup 3}. The youngest landslide-dammed lakes formed during a period of significantly wetter regional climate, strongly suggesting that climate changes were responsible for reactivation of the slump complexes. We are not certain about the exact triggering mechanisms for these landslides, but they probably involved removal of lateral support due to erosion of the slope base by the Rio Grande during periods of exceptionally high flood discharge or rapid incision; increased pore pressures associated with higher water tables; higher seepage forces at sites of ground-water discharge; or some combination of these processes. Seismic shaking could also have contributed to triggering of some of the landslides, particularly if aided by wet antecedent conditions. 54 refs., 19 figs., 3 tabs.

  3. Dynamic characterization and damage detection in the I-40 bridge over the Rio Grande

    SciTech Connect

    Farrar, C.R.; Baker, W.E.; Bell, T.M.; Cone, K.M.; Darling, T.W.; Duffey, T.A.; Eklund, A.; Migliori, A.

    1994-06-01

    In the 1960`s and 1970`s over 2500 bridges were built in the U.S. with a design similar to those on Interstate 40 over the Rio Grande in Albuquerque, New Mexico. These bridges were built without structural redundancy and typically have only two plate girders carrying the entire dead and live loads. Failure of either girder is assumed to produce catastrophic failure of the bridge, hence these bridges are referred to as fracture-critical bridges. The Federal Highway Administration (FHWA) and the National Science Foundation (NSF) have provided funds to New Mexico State University (NMSU) through the New Mexico State Highway and Transportation Department (NMSH&TD) and The Alliance For Transportation Research (ATR) for evaluation and testing of the existing fracture critical bridges over the Rio Grande. Because the 1-40 bridges over the Rio Grande were to be razed during the summer of 1993, the investigators were able to introduce simulated fatigue cracks, similar to those observed in the field, into the structure in order to test various damage identification methods and to observe the changes in load paths through the structure caused by the cracking. To support this research effort, NMSU contracted Los Alamos National Laboratory (LANL) to perform experimental modal analyses, and to develop experimentally verified numerical models of the bridge. Scientists from the LANL`s Condensed Matter and Thermal Physics Group (P-10) applied state-of-the-art sensors and data acquisition software to the modal tests. Engineers from the LANL`s Advanced Engineering Technology Group (MEE-13) conducted ambient and forced vibration tests to verify detailed and simplified finite element models of the bridge. Forced vibration testing was done in conjunction with engineers from Sandia National Laboratory (SNL) who provided and operated a hydraulic shaker.

  4. Battle Analysis - Cassino: The Second, Third, and Fourth Battles, Offensive, Deliberate Attack, Mountain (Combined), 13 February-18 May 1944

    DTIC Science & Technology

    1984-05-23

    rnLardmert of the town of Cassino itself. The New Zealand Division would push past the souther , face of M,on,rte Cassino alonq Route 6. (See Map 7--The Town...elption of the Cassino battleground J. F. T�r . .. ii I The Second, Third, and Fourth battles of Cassino Cassino, so costly in human life and...suffering, .. . was in the end little moore than a victory of the human spirit; an elegy for the comr•icr soldier-; a rmemor8ial to the definitive horror

  5. The topographic distribution of annual incoming solar radiation in the Rio Grande River basin

    NASA Technical Reports Server (NTRS)

    Dubayah, R.; Van Katwijk, V.

    1992-01-01

    We model the annual incoming solar radiation topoclimatology for the Rio Grande River basin in Colorado, U.S.A. Hourly pyranometer measurements are combined with satellite reflectance data and 30-m digital elevation models within a topographic solar radiation algorithm. Our results show that there is large spatial variability within the basin, even at an annual integration length, but the annual, basin-wide mean is close to that measured by the pyranometers. The variance within 16 sq km and 100 sq km regions is a linear function of the average slope in the region, suggesting a possible parameterization for sub-grid-cell variability.

  6. [Mental illness in women in Porto Alegre, Rio Grande do Sul, Brazil (1870-1910)].

    PubMed

    Vasconcellos, Cristiane Teresinha de Deus Virgili; Vasconcellos, Silvio José Lemos

    2007-05-01

    The relationship between female gender and mental illness is complex, remaining largely a product of women's social situation as daughters, wives, and mothers. The main objective of this article is to discuss the historical aspects related to mental illness in women in Porto Alegre, Rio Grande do Sul, Brazil, from 1870 to 1910. The authors consulted records from several so-called insane asylums as well as periodical articles published during the period. These documents provide good insight into how psychiatrists and lay society interpreted mental disorders in women. The research contributes to an understanding of the historical issues related to diagnosis of mental illness and the implications for current practice.

  7. Water resources of the Lower Rio Grande de Arecibo alluvial valley, Puerto Rico

    USGS Publications Warehouse

    Quinones-Aponte, Vicente

    1986-01-01

    An assessment of the surface and groundwater resources of the lower Rio Grande de Arecibo alluvial valley was made between 1981 and 1983. Rio Grande de Arecibo is the major source of water in the valley with a mean-annual discharge of 527 cu ft/sec (382,000 acre-ft/yr). Its lowest mean-daily flow (low flow) during 12 yr of record is 50 cu ft/sec. Withdrawals of water from Rio Grande de Arecibo exceeding 15 cu ft/sec during periods of extreme low flows could cause reduction of recharge to the aquifer. However, withdrawals of as much as 35 cu ft/sec are possible when base flow ranges from 90 to 200 cu ft/sec without causing a reduction of aquifer recharge. An unconfined aquifer within the alluvial valley is hydraulically continuous with bordering limestone formations. A clay layer divides the alluvial aquifer into two separate hydraulic systems. Groundwater from the alluvial aquifer above the clay layer has not been widely developed. However, high yielding wells presently yield as much as 9.6 mil gal/day (10,800 acre-ft/yr) from the aquifers occurring below the clay layer within the alluvium and underlaying limestones. Transmissivity ranges from 3,000 sq ft/day in the alluvial area to 42,000 sq ft/day in the adjacent limestone areas. Total groundwater flow through aquifers within the study area (excluding water withdrawn by wells) is about 20.6 mil gal/day (23,100 acre-ft/yr). 50% of this amount is estimated to flow to the eastern area of Cano Tiburones and discharges as springs and seeps. An estimated 9.4 mil gal/day (10,500 acre-ft/yr) of additional groundwater can be withdrawn from the aquifers below the clay layer without reversing the northward hydraulic gradient. Seepage from Rio Grande de Arecibo to the groundwater system at the east side of the valley is probably the key to the development of groundwater resources in the Arecibo area. San Pedro spring, with an average discharge of 8.6 mil gal/day (9,600 acre-ft/yr), is undeveloped and represents a potential

  8. Water resources simulation in the Rio Grande basin using coupled models

    SciTech Connect

    Springer, E.P.; Winter, C.L.; Bossert, J.E.

    1999-04-01

    Regional assessments of water resources under global climate change require models that can resolve management, land use, and climate effects. Los Alamos National Laboratory is developing a coupled model of water resources that places a river basin in its global context. The upper Rio Grande basin above El Paso, Texas is the testbed for this model. The model structure and computational approach are emphasize and issues such as nonlinear feedback between components and spatial and temporal scaling of processes are discussed. Using simulations of regional meteorology, the effects of high spatial resolution simulations on the distribution of precipitation are demonstrated.

  9. Radionuclide concentrations in bed sediment and fish tissue within the Rio Grande drainage basin

    SciTech Connect

    Booher, J.L.; Fresquez, P.R.; Carter, L.F.; Gallaher, B.M.; Mullen, M.A.

    1998-02-01

    In 1992-93, Los Alamos National Laboratory collaborated with the U.S. Geological Survey in an effort to characterize radionuclide concentrations in bed sediment and fish tissue within the Rio Grande drainage basin from Colorado to Texas. Bed sediment was sampled from 18 locations for cesium ({sup 137}Cs), tritium ({sup 3}H), strontium ({sup 90}Sr), plutonium ({sup 238}Pu and {sup 239}Pu), americium ({sup 241}Am), total uranium ({sup tot}U) and alpha, beta, and gamma activity. Fish tissue was sampled from 12 locations for {sup 137}Cs, {sup 90}Sr, {sup 238}Pu, {sup 239}Pu and {sup tot}U.

  10. Historic interrelationships of humans and the ecosystems of the Middle Rio Grande Basin

    SciTech Connect

    Scurlock, D.

    1995-12-31

    An ongoing study of the environmental history of the Middle Rio Grande Basin, New Mexico, is revealing major impacts on and changes to ecosystems over the past 455 years. Various land uses, such as grazing, irrigation farming, logging, and constructing flood control features, combined with climatic fluctuations have adversely produced changes in stream flow-morphology, ground water levels, topsoils, biotic communities, and individual species. Indigenous human populations have been adversely impacted by these modifications as well. Continued land-water use-impacts from a rapidly increasing regional population portend continuing changes and major challenges for natural and human resource management agencies and organizations.

  11. [Violence and social distress among transgender persons in Santa Maria, Rio Grande do Sul State, Brazil].

    PubMed

    Souza, Martha Helena Teixeira de; Malvasi, Paulo; Signorelli, Marcos Claudio; Pereira, Pedro Paulo Gomes

    2015-04-01

    The authors conducted an ethnographic research with transgender persons in Santa Maria, Rio Grande do Sul State, Brazil, in 2012, using participant observation, semi-structured interviews, and following their everyday lives. These individuals invariably experienced physical and symbolic violence and the resulting distress, a condition they had to deal with in their careers and daily practices and tasks. The article discusses the violence experienced by transvestites (in the family, school, police precincts, and health services), specifically seeking to understand how such violence relates to their experiences with health services and how the latter respond.

  12. Assessing recent declines in Upper Rio Grande runoff efficiency from a paleoclimate perspective

    NASA Astrophysics Data System (ADS)

    Lehner, Flavio; Wahl, Eugene R.; Wood, Andrew W.; Blatchford, Douglas B.; Llewellyn, Dagmar

    2017-05-01

    Recent decades have seen strong trends in hydroclimate over the American Southwest, with major river basins such as the Rio Grande exhibiting intermittent drought and declining runoff efficiencies. The extent to which these observed trends are exceptional has implications for current water management and seasonal streamflow forecasting practices. We present a new reconstruction of runoff ratio for the Upper Rio Grande basin back to 1571 C.E., which provides evidence that the declining trend in runoff ratio from the 1980s to present day is unprecedented in context of the last 445 years. Though runoff ratio is found to vary primarily in proportion to precipitation, the reconstructions suggest a secondary influence of temperature. In years of low precipitation, very low runoff ratios are made 2.5-3 times more likely by high temperatures. This temperature sensitivity appears to have strengthened in recent decades, implying future water management vulnerability should recent warming trends in the region continue.Plain Language SummarySince the 1980s, major river basins in the American Southwest such as the <span class="hlt">Rio</span> <span class="hlt">Grande</span> have experienced droughts, declining streamflow, and increasing temperatures. More importantly, runoff ratio—the portion of precipitation that ends up in the river each year, rather than evaporating—has been decreasing as well. For water managers, it is important to know whether these trends are exceptional or are merely patterns that have occurred throughout history. We use long reconstructions of historical climate based on tree rings to estimate, for the first time, the paleo runoff ratio of the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span>. This new record indicates that the recently observed trends in runoff ratio are unprecedented in the 445 year record. Together with precipitation, high temperatures have an important influence, making very low runoff ratios 2.5-3 times more likely. These findings suggest that runoff ratio could</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/sir2004-5188/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/sir2004-5188/"><span>Effects of reservoir installation, San Juan-Chama Project water, and reservoir operations on streamflow and water quality in the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span>, northern and central New Mexico, 1938-2000</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Langman, Jeff B.; Anderholm, Scott K.</p> <p>2004-01-01</p> <p>The coordinated operation of Heron, El Vado, and Abiquiu Dams on the <span class="hlt">Rio</span> Chama and Cochiti Dam on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and the importation of Colorado River Basin water by the San Juan-Chama Project have altered streamflow and water quality of the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span> in northern and central New Mexico. The coordinated retention of streamflow in the four reservoirs increased median streamflows, decreased extreme flows, and decreased periods of small streamflow; inflow of San Juan-Chama Project water increased overall streamflow in the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span>. These changes to streamflow decreased specific conductance and suspended-sediment concentration and increased pH in the <span class="hlt">Rio</span> Chama and the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. Following construction of Heron and Cochiti Dams and integration of reservoir operations on the <span class="hlt">Rio</span> Chama and the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, the inflow of San Juan-Chama Project water and retention of snowmelt runoff influenced water quality. These influences varied by season because reservoir releases fluctuated according to downstream user needs and annual streamflow variation. The influences of San Juan-Chama Project water and retained snowmelt on water quality diminished with downstream flow as the <span class="hlt">Rio</span> <span class="hlt">Grande</span> was subjected to various natural and anthropogenic inflows. Because of the variability and type of seasonal influences, streamflow did not have a strong annual correlation with water quality in the <span class="hlt">Rio</span> Chama or the <span class="hlt">Rio</span> <span class="hlt">Grande</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008AGUFM.T43A2000T','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008AGUFM.T43A2000T"><span>The Temporal and Spatial Association of Faulting and Volcanism in the Cerros del <span class="hlt">Rio</span> Volcanic Field - <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Thompson, R. A.; Hudson, M. R.; Minor, S. A.; McIntosh, W. C.; Miggins, D. P.; Grauch, V.</p> <p>2008-12-01</p> <p>The Plio-Pleistocene Cerros del <span class="hlt">Rio</span> volcanic field (CdRVF) in northern New Mexico is one of the largest ( greater than 700 square kilometers) predominantly basaltic and andesitic volcanic centers of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift; it records the late-stage, volcano-tectonic evolution of the SW part of the Espanola Basin. The CdRVF reflects both regional proclivity toward Pliocene basaltic volcanism following protracted Neogene extensional tectonism and localized eruptive response to migration of basin- bounding faults. Approximately 180 cubic kilometers of flat lying to gently dipping basalt, andesite, and minor dacite lava flows and pyroclastic deposits of the CdRVF were erupted from more than 50 exposed vents between 2.8 Ma and 1.14 Ma. Subsurface interpretations of drill hole data and incised canyon exposures of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> show that volcanic deposits are interbedded with Santa Fe Group sediments deposited in actively subsiding sub-basins of the southernmost Espanola Basin. Major basin-bounding faults in this area strike north to northwest, dip basinward, and have mostly dip-slip and subordinate strike-slip displacement. Although major basin-bounding faults were active prior to the onset of volcanism in the CdRVF, protracted extension resulted in a westward migration of graben-bounding faults. Phases of coeval volcanism at 2.8-2.6 Ma, 2.5-2.2 Ma, and 1.5-1.1 Ma, decreased in eruptive volume through time and are delineated on the basis of mapped stratigraphy, argon geochronology, paleomagnetic and aeromagnetic properties, and record a syntectonic westward migration of eruptive centers. The alignment of vent areas with mapped faults strongly suggests deep magmatic sources utilized local structures as conduits (i.e. faults and fractures developed in response to regional stress). However, some near-surface feeder dikes associated with eroded cinder cones record orientations that are not typically correlative with regional fault patterns suggesting near-surface conduits are</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1991CoMP..108..331D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1991CoMP..108..331D"><span>Diverse mantle and crustal components in lavas of the NW Cerros del <span class="hlt">Rio</span> volcanic field, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Duncker, K. E.; Wolff, J. A.; Harmon, R. S.; Leat, P. T.; Dickin, A. P.; Thompson, R. N.</p> <p>1991-09-01</p> <p>Products of Pliocene (2 4 Ma) mafic to intermediate volcanism in the northwestern Cerros del <span class="hlt">Rio</span>, a dominantly mafic volcanic field in the Española Basin of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR), range from 49% to 63% SiO2 and exhibit diversity in silica saturation, trace-element patterns, and isotopic compositions. Tholeiites, which are largely confined to west of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, have trace-element abundances that resemble those of oceanic basalts, but with mild depletions in Nb and Ta, and high 87Sr/86Sr, low 143Nd/144Nd, and high δ18O compared to typical OIB. They are regarded as asthenospherically-derived magmas contaminated with continental crust. Alkali basalts and hawaiites erupted from vents east of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> are geochemically distinct, having generally higher overall incompatible-element abundances, but with pronounced depletions in K, Rb, Nb and Ta with respect to Th and LREE. Spatially-associated benmoreites, mugearites and latites (collectively termed “evolved” lavas) have similar trace-element characteristics to the mafic mildly-alkaline compositions, but are typically not as depleted in K. Hawaiites and evolved lavas exhibit a good negative correlation of 143Nd/144Nd with SiO2, due to interaction with lower continental crust. The most silicic “evolved” lavas carry the highest proportions of crustal material, and consequently have higher K/Th than the related hawaiites. Several (mostly mafic) lavas contain abundant crustally-derived resorbed quartz xenocrysts in O-isotope disequilibrium with the host magma. The δ18O values of xenocrystic quartz range over 4‰, indicating a variety of quartz-bearing crustal contaminants beneath the Española Basin. The hawaiites, with their unusual combination of trace-element enrichments and depletions, cannot be generated by any process of fractionation or crustal contamination superposed on a common mantle source type (oceanic or arc-source). It is a regional mantle source type, inasmuch as it was also present</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4507544','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4507544"><span>Seroepidemiology of Paracoccidioides brasiliensis infection in horses from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Albano, Ana Paula Neuschrank; Klafke, Gabriel Baracy; Brandolt, Tchana Martinez; Da Hora, Vanusa Pousada; Nogueira, Carlos Eduardo Wayne; Xavier, Melissa Orzechowski; Meireles, Mário Carlos Araújo</p> <p>2015-01-01</p> <p>Paracoccidioides brasiliensis is the etiological agent of the major systemic mycosis in Brazil, called paracoccidioidomycosis. Although the <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul is considered an endemic area of the disease, there are few studies on the ecology of P. brasiliensis in the state. Therefore, this study aimed to evaluate the infection of P. brasiliensis in horses from the mesoregion of Southwest Riograndense, using these animals as sentinels. Serological techniques, such as double immunodiffusion in agar gel (AGID) and indirect ELISA, were performed to detect the anti-gp43 P. brasiliensis antibody in horses from five different farms in the region of Bagé, RS, Brazil. Serology was performed in 200 Pure Blood English horses up to two years of age that were born and raised exclusively at the farms. Of these horses, 12% had anti-gp43 antibodies according to the ELISA results, with rates ranging from 0 to 30% according to the farm of origin (p < 0.001). Based on the immunodiffusion results, all equine serum samples were negative. These results indicate the presence of the fungus P. brasiliensis in the middle region of the southwestern state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil. PMID:26273267</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26273267','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26273267"><span>Seroepidemiology of Paracoccidioides brasiliensis infection in horses from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Albano, Ana Paula Neuschrank; Klafke, Gabriel Baracy; Brandolt, Tchana Martinez; Da Hora, Vanusa Pousada; Nogueira, Carlos Eduardo Wayne; Xavier, Melissa Orzechowski; Meireles, Mário Carlos Araújo</p> <p>2015-06-01</p> <p>Paracoccidioides brasiliensis is the etiological agent of the major systemic mycosis in Brazil, called paracoccidioidomycosis. Although the <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul is considered an endemic area of the disease, there are few studies on the ecology of P. brasiliensis in the state. Therefore, this study aimed to evaluate the infection of P. brasiliensis in horses from the mesoregion of Southwest Riograndense, using these animals as sentinels. Serological techniques, such as double immunodiffusion in agar gel (AGID) and indirect ELISA, were performed to detect the anti-gp43 P. brasiliensis antibody in horses from five different farms in the region of Bagé, RS, Brazil. Serology was performed in 200 Pure Blood English horses up to two years of age that were born and raised exclusively at the farms. Of these horses, 12% had anti-gp43 antibodies according to the ELISA results, with rates ranging from 0 to 30% according to the farm of origin (p < 0.001). Based on the immunodiffusion results, all equine serum samples were negative. These results indicate the presence of the fungus P. brasiliensis in the middle region of the southwestern state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70026858','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70026858"><span>Hydrochemical tracers in the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, USA: 1. Conceptualization of groundwater flow</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Plummer, L.N.; Bexfield, L.M.; Anderholm, S.K.; Sanford, W.E.; Busenberg, E.</p> <p>2004-01-01</p> <p>Chemical and isotopic data for groundwater from throughout the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, central New Mexico, USA, were used to identify and map groundwater flow from 12 sources of water to the basin,evaluate radiocarbon ages, and refine the conceptual model of the Santa Fe Group aquifer system. Hydrochemical zones, representing groundwater flow over thousands to tens of thousands of years, can be traced over large distances through the primarily siliciclastic aquifer system. The locations of the hydrochemical zones mostly reflect the "modern" predevelopment hydraulic-head distribution, but are inconsistent with a trough in predevelopment water levels in the west-central part of the basin, indicating that this trough is a transient rather than a long-term feature of the aquifer system. Radiocarbon ages adjusted for geochemical reactions, mixing, and evapotranspiration/dilution processes in the aquifer system were nearly identical to the unadjusted radiocarbon ages, and ranged from modern to more than 30 ka. Age gradients from piezometer nests ranged from 0.1 to 2 year cm-1 and indicate a recharge rate of about 3 cm year-1 for recharge along the eastern mountain front and infiltration from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> near Albuquerque. There has been appreciably less recharge along the eastern mountain front north and south of Albuquerque. ?? Springer-Verlag 2004.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19950046170&hterms=English+Mexico&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DEnglish%2BMexico','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19950046170&hterms=English+Mexico&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DEnglish%2BMexico"><span>Paleomagnetism and tectonic interpretations of the Taos Plateau volcanic field, <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift, New Mexico</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brown, Laurie L.; Caffall, Nancy M.; Golombek, Matthew P.</p> <p>1993-01-01</p> <p>The tectonic response of the Taos Plateau volcanic field in the southern San Luis basin to late stage extensional environment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift was investigate using paleomagnetic techniques. Sixty-two sites (533 samples) of Pliocene volcanic units were collected covering four major rock types with ages of 4.7 to 1.8 Ma. Twenty-two of these sites were from stratigraphic sections of the lower, middle and upper Servilleta Basalt collected in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge at two locations 19 km apart. Flows from the lower and middle members in the southern gorge record reversed polarities, while those in Garapata Canyon are normal with an excursion event in the middle of the sequence. The uppermost flows of the upper member at both sites display normal directions. Although these sections correlate chemically, they seem to represent different magnetic time periods during the Gilbert Reversed-Polarity Chron. The data suggest the Taos Plateau volcanic field, showing no rotation and some flattening in the south and east, has acted as a stable buttress and has been downwarped by overriding of the southeastern end of the plateau by the Picuris Mountains, which make up the northern corner of the counter-clockwise rotating Espanola block.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1988/0324/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1988/0324/report.pdf"><span>Suspended-sediment data in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> De Loiza basin, Puerto Rico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Guzman-Rios, Senen</p> <p>1989-01-01</p> <p>Fluvial sediment, a widely recognized pollutant of surface water , is reducing the efficiency and useful life of almost all reservoirs in Puerto Rico. Sediment transported from the upper basin of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Loiza is eventually deposited in the bottom of Lago Loiza, a water reservoir. Suspended sediment data were collected from 1983 to 1986 from a 208 sq mi area extending from the headwaters of <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Loiza to the Lago Loiza. The drainage areas range from 0.82 sq mi to 89.8 sq mi. Results are based on three years of data from a network of five daily- record stations and five partial-record stations. A total of 2 ,114 sediment samples were collected and analyzed during the investigation. Instantaneous concentrations of suspended sediment varied from 0 to 56, 100 mg/L. Instantaneous suspended sediment loads ranged from 0 tons/day to 817,000 tons/day. A total of 152 suspended sediment samples were analyzed for particle size distribution. Suspended sediment in the streams is composed mostly of silt and clay. Sand content ranged from 6 to 80% during high flows. (Author 's abstract)</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_12 --> <div id="page_13" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="241"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19860053056&hterms=refraction&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Drefraction','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19860053056&hterms=refraction&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Drefraction"><span>Crustal structure of the Southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift determined from seismic refraction profiling</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Sinno, Y. A.; Keller, G. R.; Harder, S. H.; Daggett, P. H.; Morgan, P.</p> <p>1986-01-01</p> <p>As part of a major cooperative seismic experiment, a series of seismic refraction profiles have been recorded in south-central New Mexico with the goal of determining the crustal structure in the southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. The data gathered greatly expand the seismic data base in the area, and consist of three interlocking regional profiles: a reversed E-W line across the rift, an unreversed N-S axial line, and an unreversed SW-SE line. The reversed E-W line shows no significant dip along the Moho (32 km thick crust) and a 7.7 km/s Pn velocity. Results from the N-S axial line and the NW-SE line indicate an apparent Pn velocity of 7.95 km/s and significant dip along the Moho with crustal thinning toward the south and southeast. When interpreted together, these data indicate a crustal thinning in the southern rift of 4-6 km with respect to the northern rift and the adjacent Basin and Range province, and establish the regional Pn velocity to be approximately 7.7 km/s. These results suggest that the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift can be identified as a crustal feature separate and distinct from the Basin and Range province.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4124495','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4124495"><span>Genetic diversity of Brucella ovis isolates from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, by MLVA16</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p></p> <p>2014-01-01</p> <p>Background Ovine epididymitis is predominantly associated with Brucella ovis infection. Molecular characterization of Brucella spp. achieved by multi-locus variable number of tandem repeats (VNTR) analyses (MLVA) have proved to be a powerful tool for epidemiological trace-back studies. Thus, the aim of this study was to evaluate the genetic diversity of Brucella ovis isolates from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil, by MLVA16. Findings MLVA16 genotyping identified thirteen distinct genotypes and a Hunter-Gaston diversity index of 0.989 among the fourteen B. ovis genotyped strains. All B. ovis MLVA16 genotypes observed in the present study represented non-previously described profiles. Analyses of the eight conserved loci included in panel 1 (MLVA8) showed three different genotypes, two new and one already described for B. ovis isolates. Among ten B. ovis isolates from same herd only two strains had identical pattern, whereas the four isolates with no epidemiologic information exhibited a single MLVA16 pattern each. Analysis of minimal spanning tree, constructed using the fourteen B. ovis strains typed in this study together with all nineteen B. ovis MLVA16 genotypes available in the MLVAbank 2014, revealed the existence of two clearly distinct major clonal complexes. Conclusions In conclusion, the results of the present study showed a high genetic diversity among B. ovis field isolates from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil, by MLVA16. PMID:25015223</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017EGUGA..19.9369D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017EGUGA..19.9369D"><span>Low-Temperature Thermochronology Of <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise, South Atlantic Ocean</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Doranti Tiritan, Carolina; Hackspacher, Peter Christian; Carina Siqueira Ribeiro, Marli</p> <p>2017-04-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise (RGR) is a submerse plateau 1500 km distant from Brazilian coast, on Ocidental South Atlantic Ocean. It is interpreted as a great igneous province connected in the past with the Walvis Ridge on the Oriental South Atlantic. First hypothesis about their genesis rely on the great magmatic activity associated with the Tristao Cunha-Gough plume. However, recently, more evidences suggest that the RGR is a fragment of continental crust that could have been separated from the São Paulo Plateau during the South Atlantic opening process. New seismic data and in situ observation have reinforced this interpretation, which has been created more significantly questioning about the from the continental break has occurred, as well on how was the role and genesis of the hot spots that were manifested through the plume. This work will be presenting thermochronological data from RGR rocks collected by Brazilian Geological Service (CPRM) and Bremen IODP repository. We intend to have more data that will allow to reconstruct the processes of subsidence and rock uplift that could have occurred during Cretaceous and Eocene. It will be possible calculate exhumation rates and correlate them or not to the formation of the oceanic crust, time as an island and if the velocity of the subsidence. This work is part of a major project called "Elevação do Alto <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Atlantico Sul Ocidental", financed by IODP/CAPES.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4059305','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4059305"><span>Paracoccidioidomycosis in southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul: A retrospective study of histopathologically diagnosed cases</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>de Souza, Silvana Pereira; Jorge, Valéria Magalhães; Xavier, Melissa Orzechowski</p> <p>2014-01-01</p> <p>Paracoccidioidomycosis (PCM) is a systemic mycosis caused by the fungus Paracoccidioides brasiliensis and is endemic to Brazil. The aim of this study was to perform a retrospective analysis of the PCM cases in the countryside south of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil. The files from four histopathology laboratories located in the city of Pelotas were obtained, and all of the epidemiological and clinical data from the PCM diagnosed cases were collected for analysis. A total of 123 PCM cases diagnosed between 1966 and 2009 were selected. Of these patients, 104 (84.5%) were male, and 17 were female. The patients ranged from 02 to 92 years of age. Fifty-two cases (41.9%) were obtained from the oral pathology laboratory, and the remaining 71 cases (58.1%) were obtained from the three general pathology laboratories. Of all of the patients studied, 65.2% lived in rural zones and worked in agriculture or other related fields. Data on the evolution of this disease was available for 43 cases, and the time frame ranged from 20 to 2920 days (mean = 572.3 days). An accurate diagnosis performed in less than 30 days only occurred in 21% of the cases. PCM is endemic to the countryside of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. Therefore, it is recommended that PCM be included as a differential diagnosis, mainly for individuals between 30 and 60 years of age, living in rural zones and who have respiratory signs and associated-oropharyngeal lesions. PMID:24948940</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19950046170&hterms=tectonic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dtectonic','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19950046170&hterms=tectonic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dtectonic"><span>Paleomagnetism and tectonic interpretations of the Taos Plateau volcanic field, <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift, New Mexico</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brown, Laurie L.; Caffall, Nancy M.; Golombek, Matthew P.</p> <p>1993-01-01</p> <p>The tectonic response of the Taos Plateau volcanic field in the southern San Luis basin to late stage extensional environment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift was investigate using paleomagnetic techniques. Sixty-two sites (533 samples) of Pliocene volcanic units were collected covering four major rock types with ages of 4.7 to 1.8 Ma. Twenty-two of these sites were from stratigraphic sections of the lower, middle and upper Servilleta Basalt collected in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge at two locations 19 km apart. Flows from the lower and middle members in the southern gorge record reversed polarities, while those in Garapata Canyon are normal with an excursion event in the middle of the sequence. The uppermost flows of the upper member at both sites display normal directions. Although these sections correlate chemically, they seem to represent different magnetic time periods during the Gilbert Reversed-Polarity Chron. The data suggest the Taos Plateau volcanic field, showing no rotation and some flattening in the south and east, has acted as a stable buttress and has been downwarped by overriding of the southeastern end of the plateau by the Picuris Mountains, which make up the northern corner of the counter-clockwise rotating Espanola block.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70180893','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70180893"><span>Additional records of bats from the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Valdez, Ernest W.; Stuart, James N.; Bogan, Michael A.</p> <p>1999-01-01</p> <p>The resident and migratory bat fauna of the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley in central New Mexico is inadequately known. Many of the specimen records from this valley are from Bosque del Apache National Wildlife Refuge, ca. 20 km S of Socorro, Socorro Co. Findley et al. (1975) reported Myotis lucifugus, M. yumanensis, Lasiurus cinereus, and Tadarida brasiliensis from the refuge to which Reith (1982) added Antrozous pallidus. During June and July 1994, we netted nine nights and conducted visual searches of known roosts to capture 67 bats of seven species as part of a baseline survey of bats on the refuge. We surveyed artificial wetlands in the transitional zone between riparian forest and adjacent desert-grassland, within ca. 2 km of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. Nearby agricultural fields and ponds managed primarily for use by waterfowl provided numerous sites suitable for foraging and drinking by bats. We report four new species records for the refuge, one of  which is also a new county record. Voucher material is deposited in the Biological Survey Collection, Fort Collins (BS/FC), now housed in the Museum of Southwestern Biology (MSB), University of New Mexico.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AGUFMGC13E1239C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AGUFMGC13E1239C"><span>Climate Change and the Snowmelt-runoff Relationship in the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Chavarria, S. B.; Gutzler, D. S.</p> <p>2016-12-01</p> <p>Drought and rising temperatures have resulted in reduced snowpack and low flows in recent years for the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, a vital source of surface water in three southwestern states and northern Mexico. We assess monthly and seasonal changes in streamflow volume on the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> (URG) near its headwaters in southern Colorado for water years 1958-2015. We use gage data from the U.S. Geological Survey, naturalized streamflows from the U.S. Natural Resources Conservation Service, and observed temperature, precipitation and snowpack data in the URG. Trends in discharge and downstream gains/losses are examined together with covariations in snow water equivalent, and surface climate variables. We test the hypothesis that climate change is already affecting the streamflow volume derived from snow accumulation in ways consistent with CMIP-based model projections of 21st Century streamflow, and we attempt to separate climate-related streamflow signals from variability due to reservoir releases or diversions. Preliminary results indicate that decreasing snowpack and resulting diminution of springtime streamflow in the URG are detectable in both observed and naturalized flow data beginning in the mid to late 1980s, despite the absence of significant decrease in total flow. Correlations between warm and cold season fluctuations in streamflow and temperature or precipitation are being evaluated and will be compared to model projections. Our study will provide information that may be useful for validating hydroclimatic models and improving seasonal water supply outlooks, essential tools for water management.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/20498954','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/20498954"><span>[Faunistic analysis of leafhopper (Hemiptera: Cicadellidae) species in vineyards of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ringenberg, Rudiney; Lopes, João R S; Botton, Marcos; Azevedo-Filho, Wilson S De; Cavichioli, Rodney R</p> <p>2010-01-01</p> <p>In some American countries, grapevines are affected by Pierce's disease (PD), which is caused by a particular strain of Xylella fastidiosa not yet reported in Brazil. In order to investigate the potential for PD spread in Brazil in case of pathogen introduction, we conducted a faunistic analysis of leafhoppers (Hemiptera: Cicadellidae) associated to vineyards in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, with emphasis in the subfamily Cicadellinae (sharpshooters), which includes the main potential vectors of X. fastidiosa. Leafhopper samplings were carried out fortnightly during two years (9/2004-9/2006) in four Vitis vinifera vineyards in the municipalities of Bento Gonçalves and Farroupilha (RS). Thirtyfour leafhopper and six spittlebug species were collected, but most (98.4%) of the 3,893 specimens trapped were leafhoppers, distributed in the subfamilies Cicadellinae (60.2%), Gyponinae (34.1%), Deltocephalinae (3.8%) and Coelidinae (0.3%). The sharpshooter specimens were divided in the tribes Cicadellini (68.5%; 12 species) and Proconiini (31.5%; 11 species). Based on the faunistic indices, five species of Cicadellini, Bucephalogonia xanthophis (Berg), Dilobopterus dispar (Germar), Macugonalia cavifrons Stal, Sibovia sagata (Signoret) and Spinagonalia rubrovittata Cavichioli, and three of Proconiini, Molomea consolida (Schöder), Oncometopia facialis (Signoret) and Oncometopia fusca Melichar were prevalent in the vineyards. The high diversity of native sharpshooters in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul indicates the existence of a high risk of PD spread if the pathogen is introduced in grapevines.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/759666','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/759666"><span>A Coupled Modeling System to Simulate Water Resources in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bossert, J.E.; Breshears, D.D.; Campbell, K.; Costigan, K.R.; Greene, R.K.; Keating, E.H.; Kleifgen, L.M.; Langley, D.L.; Martens, S.N.; Sanderson, J.G.; Springer, E.P.; Stalker, J.R.; Tartakovsky, D.M.; Winter, C.L.; Zyvoloski, G.A.</p> <p>1999-01-11</p> <p>Limited availability of fresh water in arid and semi-arid regions of the world requires prudent management strategies from accurate, science-based assessments. These assessments demand a thorough understanding of the hydrologic cycle over long time periods within the individual water-sheds that comprise large river basins. Measurement and simulation of the hydrologic cycle is a tremendous challenge, involving a coupling between global to regional-scale atmospheric precipitation processes with regional to local-scale land surface and subsurface water transport. Los Alamos National Laboratory is developing a detailed modeling system of the hydrologic cycle and applying this tool at high resolution to assess the water balance within the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> river basin. The <span class="hlt">Rio</span> <span class="hlt">Grande</span> is a prime example of a river system in a semiarid environment, with a high demand from agricultural, industrial, recreational, and municipal interests for its water supply. Within this river basin, groundwater supplies often augment surface water. With increasing growth projected throughout the river basin, however, these multiple water users have the potential to significantly deplete groundwater resources, thereby increasing the dependence on surface water resources.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19860053056&hterms=Refraction&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DRefraction','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19860053056&hterms=Refraction&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DRefraction"><span>Crustal structure of the Southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift determined from seismic refraction profiling</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Sinno, Y. A.; Keller, G. R.; Harder, S. H.; Daggett, P. H.; Morgan, P.</p> <p>1986-01-01</p> <p>As part of a major cooperative seismic experiment, a series of seismic refraction profiles have been recorded in south-central New Mexico with the goal of determining the crustal structure in the southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. The data gathered greatly expand the seismic data base in the area, and consist of three interlocking regional profiles: a reversed E-W line across the rift, an unreversed N-S axial line, and an unreversed SW-SE line. The reversed E-W line shows no significant dip along the Moho (32 km thick crust) and a 7.7 km/s Pn velocity. Results from the N-S axial line and the NW-SE line indicate an apparent Pn velocity of 7.95 km/s and significant dip along the Moho with crustal thinning toward the south and southeast. When interpreted together, these data indicate a crustal thinning in the southern rift of 4-6 km with respect to the northern rift and the adjacent Basin and Range province, and establish the regional Pn velocity to be approximately 7.7 km/s. These results suggest that the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift can be identified as a crustal feature separate and distinct from the Basin and Range province.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.texasbirds.org/publications.php','USGSPUBS'); return false;" href="http://www.texasbirds.org/publications.php"><span>Birds of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and other riparian habitats of Western Webb County, Texas</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Woodin, Marc C.; Skoruppa, Mary Kay; Blacklock, Gene W.; Hickman, Graham C.</p> <p>2007-01-01</p> <p>We conducted 164 diurnal morning point counts in 1997 and 89 nocturnal point counts in 1998 along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and at other riparian habitats on remote ranchland in northwestern Webb County. We subsequently conducted 94 diurnal morning and 37 nocturnal point counts in 1999 on public lands along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and at other riparian habitats at Laredo, Webb County. From these systematic surveys (n 384) and other irregular visits to sites during the length of the study, we detected a total of 209 bird species. Many species (97) are distributed widely over much of North America, but substantial numbers of species were also of primarily eastern (30), western (30), southwestern (26), and tropical (26) distributions. Fifty-five of the 209 species (26%) occur on >1 species priority lists in six bird conservation plans that we reviewed, but only four of these were tropical species. This suggests that tropical species, the driving force behind ecotourism-sustained economies in southern Texas, may not benefit directly from recent bird conservation plans, since their lists of priority species do not include many tropical birds. Thus, conservation projects designed to benefit primarily tropical species will not be ranked highly for funding if evaluated on the basis of the bird conservation plans we reviewed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1999/4260/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1999/4260/report.pdf"><span>Simulation of a long-term aquifer test conducted near the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Albuquerque, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>McAda, Douglas P.</p> <p>2001-01-01</p> <p>A long-term aquifer test was conducted near the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Albuquerque during January and February 1995 using 22 wells and piezometers at nine sites, with the City of Albuquerque Griegos 1 production well as the pumped well. Griegos 1 discharge averaged about 2,330 gallons per minute for 54.4 days. A three-dimensional finite-difference ground-water-flow model was used to estimate aquifer properties in the vicinity of the Griegos well field and the amount of infiltration induced into the aquifer system from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and riverside drains as a result of pumping during the test. The model was initially calibrated by trial-and-error adjustments of the aquifer properties. The model was recalibrated using a nonlinear least-squares regression technique. The aquifer system in the area includes the middle Tertiary to Quaternary Santa Fe Group and post-Santa Fe Group valley- and basin-fill deposits of the Albuquerque Basin. The <span class="hlt">Rio</span> <span class="hlt">Grande</span> and adjacent riverside drains are in hydraulic connection with the aquifer system. The hydraulic-conductivity values of the upper part of the Santa Fe Group resulting from the model calibrated by trial and error varied by zone in the model and ranged from 12 to 33 feet per day. The hydraulic conductivity of the inner-valley alluvium was 45 feet per day. The vertical to horizontal anisotropy ratio was 1:140. Specific storage was 4 x 10-6 per foot of aquifer thickness, and specific yield was 0.15 (dimensionless). The sum of squared errors between the observed and simulated drawdowns was 130 feet squared. Not all aquifer properties could be estimated using nonlinear regression because of model insensitivity to some aquifer properties at observation locations. Hydraulic conductivity of the inner-valley alluvium, middle part of the Santa Fe Group, and riverbed and riverside-drain bed and specific yield had low sensitivity values and therefore could not be estimated. Of the properties estimated, hydraulic conductivity of the upper part of</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/wri02-4131/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/wri02-4131/"><span>Summary of Flow Loss between Selected Cross Sections on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in and near Albuquerque, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Veenhuis, Jack E.</p> <p>2002-01-01</p> <p>The upper middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, as defined by the U.S. Army Corps of Engineers, extends from the headwaters of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in southwestern Colorado to Fort Quitman, Texas. Most of the basin has a semiarid climate typical of the southwestern United States. This climate drives a highly variable streamflow regime that contributes to the complexity of water management in the basin. Currently, rapid population growth in the basin has resulted in increasing demands on the hydrologic system. Water management decisions have become increasingly complex because of the broad range of interests and issues. For these reasons, the U.S. Geological Survey, in cooperation with the City of Albuquerque, New Mexico, conducted paired flow measurements at two cross sections to determine cross-sectional loss in the Albuquerque reach of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. This report statistically summarizes flow losses in the Albuquerque reach of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> during the winter nonirrigation season from December 1996 to February 2000. The two previous flow-loss investigations are statistically summarized. Daily mean flow losses are calculated for the winter nonirrigation season using daily mean flows at three selected <span class="hlt">Rio</span> <span class="hlt">Grande</span> streamflow-gaging stations.For the winter nonirrigation season cross-sectional measurements (1996-2000), an average of 210 cubic feet per second was returned to the river between the measurement sites, of which 165 cubic feet per second was intercepted by riverside drains along the 21.9-mile reach from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> near Bernalillo to the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at <span class="hlt">Rio</span> Bravo Bridge streamflow-gaging stations. Total cross-sectional losses in this reach averaged about 90 cubic feet per second. Regression equations were determined for estimating downstream total outflow from upstream total inflow for all three paired measurement studies. Regression equations relating the three daily mean flow recording stations also were determined. In each succeeding study, additional outside variables</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70187351','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70187351"><span>Geomorphic evolution of the San Luis Basin and <span class="hlt">Rio</span> <span class="hlt">Grande</span> in southern Colorado and northern New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ruleman, Cal; Machette, Michael; Thompson, Ren A.; Miggins, Dan M; Goehring, Brent M; Paces, James B.</p> <p>2016-01-01</p> <p>The San Luis Basin encompasses the largest structural and hydrologic basin of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. On this field trip, we will examine the timing of transition of the San Luis Basin from hydrologically closed, aggrading subbasins to a continuous fluvial system that eroded the basin, formed the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge, and ultimately, integrated the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Colorado to the Gulf of Mexico. Waning Pleistocene neotectonic activity and onset of major glacial episodes, in particular Marine Isotope Stages 11–2 (~420–14 ka), induced basin fill, spillover, and erosion of the southern San Luis Basin. The combined use of new geologic mapping, fluvial geomorphology, reinterpreted surficial geology of the Taos Plateau, pedogenic relative dating studies, 3He surface exposure dating of basalts, and U-series dating of pedogenic carbonate supports a sequence of events wherein pluvial Lake Alamosa in the northern San Luis Basin overflowed, and began to drain to the south across the closed Sunshine Valley–Costilla Plain region ≤400 ka. By ~200 ka, erosion had cut through topographic highs at Ute Mountain and the Red River fault zone, and began deep-canyon incision across the southern San Luis Basin. Previous studies indicate that prior to 200 ka, the present <span class="hlt">Rio</span> <span class="hlt">Grande</span> terminated into a large bolson complex in the vicinity of El Paso, Texas, and systematic, headward erosional processes had subtly integrated discontinuously connected basins along the eastern flank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift and southern Rocky Mountains. We propose that the integration of the entire San Luis Basin into the <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainage system (~400–200 ka) was the critical event in the formation of the modern <span class="hlt">Rio</span> <span class="hlt">Grande</span>, integrating hinterland basins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift from El Paso, Texas, north to the San Luis Basin with the Gulf of Mexico. This event dramatically affected basins southeast of El Paso, Texas, across the Chisos Mountains and southeastern Basin and Range province, including the <span class="hlt">Rio</span></p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2014/5197/pdf/sir2014-5197.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2014/5197/pdf/sir2014-5197.pdf"><span>Seepage investigation on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from below Caballo Reservoir, New Mexico, to El Paso, Texas, 2012</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gunn, Mark A.; Roark, D. Michael</p> <p>2014-01-01</p> <p>A seepage investigation was conducted by the U.S. Geological Survey, in cooperation with the New Mexico Interstate Stream Commission, along an approximately 106-mile reach of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from below Caballo Reservoir, New Mexico, to El Paso, Texas, during June 26–28, 2012, to determine gain or loss of streamflow due to seepage to or from the river channel. Discharge measurements were made during the irrigation season at high flow including 5 sites along the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, 5 diversions, and 63 inflows. The net gain or loss of flow in the river channel was computed for four reaches within the 106-mile reach of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. The normalized percentage difference was computed for each reach to determine the difference between discharge measured at upstream and downstream sites, and the normalized percentage uncertainty was computed to determine if a computed gain or loss exceeded cumulative uncertainty associated with measurement of discharge.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2005/5118/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2005/5118/"><span>Streamflow and water-quality trends of the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span>, northern and central New Mexico, water years 1985 to 2002</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Langman, Jeff B.; Nolan, Emma O.</p> <p>2005-01-01</p> <p>The City of Albuquerque plans to divert San Juan-Chama Project water from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for potable water use. This report examines streamflow and water-quality trends in the <span class="hlt">Rio</span> Chama and the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for water years 1985 to 2002 following the implementation of reservoir storage agreements in northern and central New Mexico. Streamflow/water-quality stations used for this study include the <span class="hlt">Rio</span> <span class="hlt">Grande</span> stations of Taos, Otowi, San Felipe, and Albuquerque and the <span class="hlt">Rio</span> Chama station of Chamita. Water years 1985 to 2002 were a period of larger than average precipitation and streamflow compared to the stations. historical averages. Annual precipitation and streamflow trended downward during the study period because of a drought during 1999 to 2002. Streamflow in the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span> was divided into three distinct seasonal periods that corresponded to natural and anthropogenic influences: fall/winter baseflow (November through February), snowmelt runoff (March through June), and the irrigation/monsoon (July through October) seasons. A calcium bicarbonate water type was evident at all study area stations on the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span>. Specific conductance increased downstream, but alkalinity and pH did not substantially change in the downstream direction. Nearly all nitrogen and phosphorous concentrations were less than 1 milligram per liter for all stations. Median trace-element concentrations and maximum radionuclide concentrations did not exceed drinking-water standards. Anthropogenic compounds were infrequently detected in the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span>, and concentrations did not exceed drinking-water standards. Water quality in the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span> varied spatially and temporally during water years 1985 to 2002. Specific conductance increased downstream in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> during the fall/winter baseflow and snowmelt runoff seasons but was similar at the Taos, Otowi, and San Felipe stations during the irrigation/monsoon season. This similarity was a</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2002AGUFM.H11F..04M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2002AGUFM.H11F..04M"><span>Quantifying Salinization of the Upper-Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Using a Basin-Scale Water and Chloride Mass Balance Model</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mills, S. K.; Phillips, F. M.; Hogan, J. F.; Hendrickx, J. M.</p> <p>2002-12-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> is clearly undergoing salinization, manifested by a 50-fold increase in total dissolved solids content between its headwaters in Colorado and the U.S.-Mexico border. To elucidate the causes of this salinization, we conducted an eight-day synoptic sampling campaign in August 2001. This sampling included the river, its major tributaries, and major irrigation drain inflows. Along 1200 km between the river headwaters in Colorado and Fort Quitman, Texas, we collected 110 water samples with an average interval of ~10 km between sampling locales. In the laboratory, samples were analyzed for major constituents including chloride, as well as for bromide and the 36Cl/Cl ratio. Isotopic fingerprinting using the 36Cl/Cl ratio indicates that meteoric waters and deep sedimentary brines respectively account for most of the water and most of the salt inflow to the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. The meteoric end member has a 36Cl/Cl ratio of 1100 and a Cl/Br ratio of 30; the brine end member has a 36Cl/Cl ratio of 35 and a Cl/Br ratio of 1150. Using these end member chemistries with USGS stream flow gauging data, we constructed a water- and salt- instantaneous mass balance model of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for the eight-day sampling interval. This model indicates that most water losses from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> are due to evaporation from Elephant Butte reservoir, open water evaporation from irrigation ditches, and evapotranspiration of riparian and ditch-bank vegetation. The model also emphasizes the significance of salt input due to deep brine discharge to the river, particularly at the downstream ends of local sedimentary basins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. The <span class="hlt">Rio</span> <span class="hlt">Grande</span> receives a smaller amount of salt from saline drains near El Paso, which may be acquiring salt from deep brine discharge as they cross over faults or other structural fluid conduits.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.B13G0707S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.B13G0707S"><span>Determining Environmental Factors Controlling Nitrogen Cycling in the Semi-Arid <span class="hlt">Rio</span> <span class="hlt">Grande</span> Using Nitrogen and Oxygen Isotopes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sanchez, D. A.; Szynkiewicz, A.; Faiia, A. M.</p> <p>2015-12-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> is a semi-arid river in the American Southwest supporting agriculture and large populous centers in New Mexico and west Texas. In addition to increasing salinity, considerable increases of nitrate (NO3), up to ~50 mg/L, have been previously observed in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> between Las Cruces, New Mexico and El Paso, Texas. This is particularly a problem during non-irrigation season when little surface water is released from upstream reservoirs, substantially reducing stream flows in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. While both irrigation runoff and municipal waste effluents are likely important NO3 contributors, there are no quantitative studies assessing NO3 fluxes to the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from these two sources. Therefore, in this study we used 𝛿15N and 𝛿18O values of NO3 as environmental tracers to characterize major NO3 sources in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and its agricultural drains between Las Cruces and El Paso. Surface water of the semi-arid <span class="hlt">Rio</span> <span class="hlt">Grande</span>, drains and major wastewater treatment plants were collected in October 2014 (non-irrigation season) and August 2015 (irrigation season). The water samples from the 2014 sampling campaign showed that the 𝛿15N and 𝛿18O values of NO3 in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and two agricultural drains located south of El Paso varied in relatively narrow range from +9.8 to +15.7‰ and -5.9 to -0.2‰, respectively. These ranges were similar to 𝛿15N and 𝛿18O values of local wastewater treatment plants in Las Cruces and El Paso, from +8.2 to +10.2‰ and -9.7 to -2.5‰ respectively. Municipal wastewater effluents are important tributaries to the semi-arid <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the studied area, particularly during non-irrigation season. Furthermore, irrigation of agricultural fields south of El Paso is to a large extent supported by reclaimed municipal wastewater. Consequently, these explain the observed higher contributions of NO3 from urban sources in the investigated area.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.S23D2776A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.S23D2776A"><span>Lithospheric structure of the eastern flank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift via receiver function velocity analysis</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Agrawal, M.; Pulliam, J.; Sen, M. K.; Grand, S.</p> <p>2015-12-01</p> <p>To better delineate a seismic anomaly beneath the eastern flank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift identified by seismic tomography, we depth-migrated Ps and Sp receiver functions using data from the SIEDCAR (Seismic Investigation of Edge Driven Convection Association with <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift) and USArray Transportable Array (TA) deployments. We performed Common Conversion Point (CCP) stacking to improve the S/N ratio of receiver functions. Using an incorrect velocity model for depth migration of a stacked CCP image may generate an inaccurate picture of the subsurface. To find sufficiently accurate P- and S-velocity models for migration, we optimize the average correlation value of common receiver gathers for target features - in this case the Moho and the LAB - while perturbing the shear wave velocities in a process driven by simulated annealing. The technique simultaneously finds depths to major discontinuities (in this case the Moho and LAB) and S and P velocity profiles beneath each seismic station in a manner that is similar to velocity analysis in reflection seismology. An application to data acquired in southeastern New Mexico and west Texas, at an average station spacing of 35 km, reveals an abrupt increase in lithospheric thickness from west to east, from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift to the Great Plains craton. Previous studies found an elongated high velocity anomaly that extends to depths approaching 500 km in southeastern New Mexico and west Texas that is distinct from the thick Great Plains lithosphere. Our stacked 3-D image confirms the anomaly's existence and shows that it is more laterally extensive than was previously indicated. Recent numerical modeling suggests that an abrupt change in lithospheric thickness, which creates a step change in densities, may produce a gravitational instability that leads to thicker mantle lithosphere dripping off into the lower density asthenosphere. As the mantle deforms it alternately thickens and thins the crust, producing topographic</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUFM.S21A2376N','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUFM.S21A2376N"><span>Using Transportable Array and CREST data to define seismicity in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Nakai, J.; Sheehan, A. F.; Bilek, S. L.</p> <p>2013-12-01</p> <p>Active low strain-rate deformation across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift within the Western U.S. presents the possibility that strain is released through widespread small magnitude earthquakes. In order to define seismicity across the rift and understand its tectonic significance, we construct a catalog of small magnitude earthquakes from 2007-2010. Colorado has never had a statewide seismic network, thus previous catalogs are limited to that from the USGS and from short-term temporary seismometer deployments. New Mexico seismicity is monitored with regional networks around Socorro and Carlsbad, though not statewide. This study is the first opportunity to locate events in a spatially and temporally comprehensive network from the USArray Transportable Array (TA) experiment supplemented by the Colorado Rockies Experiment and Seismic Transects (CREST) seismic experiment (Karlstrom et al., 2012). Our earthquake catalog will supplement the USArray Array Network Facility (ANF) catalog with smaller magnitude events and refined regional velocity models. We use earthquake detection and location programs to create a raw catalog of associated events and initial locations from 254 seismic stations surrounding the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift. Detection processing and event association parameters have been chosen specifically to extend the magnitude threshold relative to the ANF catalog (from 3.0 to approximately 1.5) . Mine blasts will be removed by manual waveform identification from the final catalog. The catalog is compared with catalogs of existing small seismic networks near and in the rift, for example, the New Mexico Tech Seismic Network. Questions of interest include: 1) Can earthquakes be identified that are rift-related? 2) What do the patterns of seismicity tell us about the tectonics of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift? Preliminary results show event associations to ML 0.0, although magnitude completeness is higher, and several hundred events are identified each month in 2008. Tectonic events will be</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_13 --> <div id="page_14" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="261"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.T51E2964L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.T51E2964L"><span>Slip re-orientation in the oblique Abiquiu embayment, northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Liu, Y.; Murphy, M. A.; Andrea, R. A.</p> <p>2015-12-01</p> <p>Traditional models of oblique rifting predict that an oblique fault accommodates both dip-slip and strike-slip kinematics. However, recent analog experiments suggest that slip can be re-oriented to almost pure dip-slip on oblique faults if a preexisting weak zone is present at the onset of oblique extension. In this study, we use fault slip data from the Abiquiu embayment in northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift to test the new model. The <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift is a Cenozoic oblique rift extending from southern Colorado to New Mexico. From north to south, it comprises three major half grabens (San Luis, Española, and Albuquerque). The Abiquiu embayment is a sub-basin of the San Luis basin in northern New Mexico. Rift-border faults are generally older and oblique to the trend of the rift, whereas internal faults are younger and approximately N-S striking, i.e. orthogonal to the regional extension direction. Rift-border faults are deep-seated in the basement rocks while the internal faults only cut shallow stratigraphic sections. It has been suggested by many that inherited structures may influence the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rifting. Particularly, Laramide structures (and possibly the Ancestral Rockies as well) that bound the Abiquiu embayment strike N- to NW. Our data show that internal faults in the Abiquiu embayment exhibit almost pure dip-slip (rake of slickenlines = 90º ± 15º), independent of their orientations with respect to the regional extension direction. On the contrary, border faults show two sets of rakes: almost pure dip-slip (rake = 90º ± 15º) where the fault is sub-parallel to the foliation, and moderately-oblique (rake = 30º ± 15º) where the fault is high angle to the foliation. We conclude that slip re-orientation occurs on most internal faults and some oblique border faults under the influence of inherited structures. Regarding those border faults on which slip is not re-oriented, we hypothesize that it may be caused by the Jemez volcanism or small-scale mantle</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24499568','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24499568"><span>Leishmaniasis transmission in an ecotourism area: potential vectors in Ilha <span class="hlt">Grande</span>, <span class="hlt">Rio</span> de Janeiro State, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Carvalho, Bruno Moreira; Maximo, Michele; Costa, Wagner Alexandre; de Santana, Antonio Luís Ferreira; da Costa, Simone Miranda; da Costa Rego, Taiana Amancio Neves; de Pita Pereira, Daniela; Rangel, Elizabeth Ferreira</p> <p>2013-11-13</p> <p>The south coast of <span class="hlt">Rio</span> de Janeiro State, in Brazil, is endemic for cutaneous and visceral leishmaniases and is frequently visited by tourists from different parts of the world. Since the complex epidemiology of leishmaniases demands local studies, the goal of this study was to investigate the phlebotomine sand fly fauna and leishmaniases transmission in Ilha <span class="hlt">Grande</span>, an ecotourism area of Angra dos Reis municipality. Sand fly fauna was sampled in three monitoring stations using HP light traps in domiciles, peridomiciles and forests. Species abundance was evaluated by the Index of Species Abundance. A Leishmania natural infection survey was done using multiplex PCR and dot blot hybridization. During 15 consecutive months of sand fly monitoring, 1093 specimens from 16 species were captured. The potential leishmaniases vectors found were Lutzomyia (Nyssomyia) intermedia, L. migonei, L. (N.) flaviscutellata, L. (Psychodopygus) ayrozai and L. (Lutzomyia) longipalpis. Five species were new records in Ilha <span class="hlt">Grande</span>: L. (Sciopemyia) microps, L. termitophila, L. firmatoi, L. rupicola and L. (P.) ayrozai. Higher species richness was found inside forest areas, although potential leishmaniases vectors were present in deforested areas, peridomiciles and inside houses. Lutzomyia (N.) intermedia and L. migonei were the most abundant species. Females of L. migonei showed a high rate (10.3%) of natural infection by Leishmania (Viannia) sp., probably Leishmania (V.) braziliensis. The detection of leishmaniases transmission and potential vectors in Ilha <span class="hlt">Grande</span> is of public health concern, especially because tourists are frequently visiting the island. Besides reinforcing the epidemiological importance of L. (N.) intermedia in <span class="hlt">Rio</span> de Janeiro State, the role of L. migonei in cutaneous leishmaniasis transmission is highlighted with its high rate of Leishmania natural infection. The finding of L. (L.) longipalpis confirmed the human autochthonous case of visceral leishmaniasis from the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3833291','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3833291"><span>Leishmaniasis transmission in an ecotourism area: potential vectors in Ilha <span class="hlt">Grande</span>, <span class="hlt">Rio</span> de Janeiro State, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p></p> <p>2013-01-01</p> <p>Background The south coast of <span class="hlt">Rio</span> de Janeiro State, in Brazil, is endemic for cutaneous and visceral leishmaniases and is frequently visited by tourists from different parts of the world. Since the complex epidemiology of leishmaniases demands local studies, the goal of this study was to investigate the phlebotomine sand fly fauna and leishmaniases transmission in Ilha <span class="hlt">Grande</span>, an ecotourism area of Angra dos Reis municipality. Methods Sand fly fauna was sampled in three monitoring stations using HP light traps in domiciles, peridomiciles and forests. Species abundance was evaluated by the Index of Species Abundance. A Leishmania natural infection survey was done using multiplex PCR and dot blot hybridization. Results During 15 consecutive months of sand fly monitoring, 1093 specimens from 16 species were captured. The potential leishmaniases vectors found were Lutzomyia (Nyssomyia) intermedia, L. migonei, L. (N.) flaviscutellata, L. (Psychodopygus) ayrozai and L. (Lutzomyia) longipalpis. Five species were new records in Ilha <span class="hlt">Grande</span>: L. (Sciopemyia) microps, L. termitophila, L. firmatoi, L. rupicola and L. (P.) ayrozai. Higher species richness was found inside forest areas, although potential leishmaniases vectors were present in deforested areas, peridomiciles and inside houses. Lutzomyia (N.) intermedia and L. migonei were the most abundant species. Females of L. migonei showed a high rate (10.3%) of natural infection by Leishmania (Viannia) sp., probably Leishmania (V.) braziliensis. Conclusions The detection of leishmaniases transmission and potential vectors in Ilha <span class="hlt">Grande</span> is of public health concern, especially because tourists are frequently visiting the island. Besides reinforcing the epidemiological importance of L. (N.) intermedia in <span class="hlt">Rio</span> de Janeiro State, the role of L. migonei in cutaneous leishmaniasis transmission is highlighted with its high rate of Leishmania natural infection. The finding of L. (L.) longipalpis confirmed the human autochthonous case</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012AGUFMED23B0765B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012AGUFMED23B0765B"><span>a Microgravity Survey to Determine the Extent of AN Andesitic Sill that Intrudes across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> River Basin, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift Valley, Sunland Park, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Baker, L. A.; Shinagel, S.; Villalobos, J. I.; Avila, V.; Montana, C. J.; Kaip, G.</p> <p>2012-12-01</p> <p>In Sunland Park, NM, there is an andesite outcrop near the bank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> (called the River Andesite) which does not match the surrounding sedimentary deposition. Studies of the River Andesite by Garcia (1970) indicate the outcrop is petrologically similar to the Muleros Andesite of Mt. Cristo Rey located several km to the south. A limited GPR and magnetic survey conducted by UTEP students in 2008 suggested the River Andesite was part of a dike, although Garcia mapped smaller outcrops of andesite ~300 m west of the river that may be part of the same body. We have recently (June 2012) found large andesite boulders that may be the outcrops Garcia mapped, although it is uncertain whether these boulders are in-situ. We initially collected microgravity and magnetic data in a small region near the river outcrop in December 2011 to determine the extent of the outcrop. Our preliminary modeling of these data showed the river outcrop appeared to merge with a more extensive igneous body at depth. Ground conductivity data collected near the river outcrop in March 2012 suggested that the outcrop impacts groundwater flow and sediment deposition adjacent to the river. From May through July 2012 we have been collecting additional microgravity data on a grid with 100-200 m spacing extending ~ 500 m from both sides of the river outcrop to better determine the extent of the buried andesite body. We also plan to conduct GPR and magnetic surveys near the recently discovered andesite boulders to determine if these are truly in-situ and part of the same igneous body as the river outcrop. Our eventual goal is to determine how extensive the andesite unit is and how it may impact groundwater flow and flooding in this area of growing urbanization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/44488','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/44488"><span>Flood pulse trophic dynamics of larval fishes in a restored arid-land, river-floodplain, Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Los Lunas, New Mexico</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Hugo A. Magana</p> <p>2013-01-01</p> <p><span class="hlt">Rio</span> <span class="hlt">Grande</span> water is intensively managed and regulated by international and interstate compacts, Native American treaties, local water rights, and federal, state, and local agencies. Legislation and engineering projects in the early twentieth century brought about water impoundment projects and channelization of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> which led to the eventual loss of...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=227395','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=227395"><span>Development and impact of biological control of giant reed, Arundo donax, in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin of the U.S. and Mexico</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Giant reed (Arundo donax L.) also known as giant cane or carrizo cane, is an exotic perennial grass that has infested over 60,000 hectares along riparian corridors in the southwestern U.S. The most severe infestations are in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, where giant reed along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and Mexic...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19760004441','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19760004441"><span>Earth resources evaluation for New Mexico by LANDSAT-2. [<span class="hlt">Rio</span> <span class="hlt">Grande</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Linden, K. V. (Principal Investigator); Feldman, S. C.; Inglis, M. H.; Kottlowski, F. E.; Tabet, D. E.</p> <p>1975-01-01</p> <p>The author has identified the following significant results. The Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> project has not yet progressed to the point where mineral exploration sites can be chosen; however, there does appear to be some correlation between the known structure and mineral deposits and the LANDSAT lineament map. A circular feature identified in the southern Magdalena Mountains on LANDSAT-1 imagery agrees well with the location of a newly proposed caldron complex. Several recognized and unrecognized circular features were identified on imagery of the Mogollon-Datil volcanic field. A check of aeromagnetic maps for New Mexico found that the circular features on the LANDSAT imagery showed up as areas of generally high magnetic intensity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/16917584','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/16917584"><span>[Adult obesity in Pelotas, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, and the association with socioeconomic status].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gigante, Denise Petrucci; Dias-da-Costa, Juvenal Soares; Olinto, Maria Teresa Anselmo; Menezes, Ana Maria Baptista; Silvia, Macedo</p> <p>2006-09-01</p> <p>The objectives of this study were to: (1) describe obesity prevalence in a Brazilian city; (2) test the association between obesity and socio-demographic variables; and (3) compare results with a survey in the same city in 1994. A cross-sectional population-based study was carried out in a random sample of 1,968 20-69-year-olds residing in the urban area of Pelotas, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State. Obesity was defined as Body Mass Index (BMI) > 30 kg/m(2). Age and sex-adjusted obesity prevalence was 19.4%. Schooling was not associated with obesity in men. Obesity prevalence was higher in middle-income men. Women with more schooling had lower obesity rates. There was a non-statistically significant reduction in obesity rates compared to a similar study from 1994.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19850003114','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19850003114"><span>Utilization of LANDSAT orbital imagery in the soil survey processes at <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte state</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Formaggio, A. R. (Principal Investigator)</p> <p>1984-01-01</p> <p>Pedologic photointerpretative criteria adapted to LANDSAT orbital imagery were used: drainage (pattern, integration degree, density and uniformity degree); relief (pattern, dissection degree and crest lines); photographic texture, photographic tonnality, and the land use (type, glebas size and intensity of use). The performance of the imagery as an auxiliar tool in the soil survey processes, at <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte State was evaluated. The drainage and relief elements were easily extracted from the imagery and also ones that provided the greatest deductive possibility about pedologic boundaries. Other analyzed criteria were considered only auxiliaries, corroborating some soil limits in the evidences convergence phase. The principal pedologic dominions of the 30,000 sq km are covered by the same LANDSAT image (WRS 359/16) were delimited with good precision: (1) fluvial plains, beaches, dunes and coastal mangroves; (2) North Coast line Plateau; (3) Acu Sandstone Zone; (4) residual plateaus of the Tertiary; and (6) plains of the embasement.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18209843','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18209843"><span>[Use of dental services by preschool children in Canela, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Kramer, Paulo Floriani; Ardenghi, Thiago Machado; Ferreira, Simone; Fischer, Laura de Almeida; Cardoso, Luciana; Feldens, Carlos Alberto</p> <p>2008-01-01</p> <p>The aim of this study was to assess the use of dental services and age at first dental visit in preschool children in Canela, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil. A representative sample of under-five children was surveyed on National Children's Vaccination Day. Children's parents completed questionnaires containing socio-demographic data and age at first dental visit. Data were analyzed using multiple logistic regression. 192 children were examined. 13.3% of the sample had already visited the dentist at least once, but only 4.3% had their first dental visit by one year of age. The number of children who had already visited a dentist increased with age. Girls showed higher odds of having visited a dentist (OR = 1.46; 95%CI: 1.01-2.1). Public health strategies are needed to determine the effectiveness of health promotion and improve the use of dental services by preschool children.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24604362','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24604362"><span>The prevalence of multiple sclerosis in Santa Maria, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Finkelsztejn, Alessandro; Lopes, Juarez Silva; Noal, Janaína; Finkelsztejn, Juliana M</p> <p>2014-02-01</p> <p>Multiple sclerosis (MS) is one of the leading causes of neurologic deficits in young adults and can lead to physical, intellectual and emotional problems. Approved treatments are expensive and are among the 10 highest budgets of the Brazilian Health Ministry. Given the diverse prevalence of MS among Brazilian regions, it is important to determine prevalence rates across the country. Seven studies have assessed MS in Brazil and reported rates ranging from 15 cases to 18 cases per 100,000 inhabitants. It has been hypothesized that this rate is even higher in southern Brazil, which has a high proportion of European heritage (mostly German and Italian) immigrants. Here, we report that the prevalence of MS in the city of Santa Maria, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, is 27.2 cases/100,000 inhabitants.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70016412','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70016412"><span>Oligocene basaltic volcanism of the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift: San Luis Hills, Colorado</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Thompson, R.A.; Johnson, C.M.; Mehnert, H.H.</p> <p>1991-01-01</p> <p>The inception of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift in northern New Mexico and southern Colorado was accompanied by voluminous mafic volcanism preserved in part as erosional remnants on an intrarift horst within the current axial rift graben of the San Luis Valley. Major and trace element constraints support a petrogenetic model of fractionation plus lower crustal assimilation for petrologic suites within the San Luis Hills rocks, although the model cannot relate lavas for the entire series to a common parent. Most mafic lavas of the San Luis Hills were evolved (Mg # <60) and contaminated by LREE-enriched silicic partial melts of granulitic lower crust depleted in Rb, Th, and U. However, relatively noncontaminated lavas can be identified and indicate at least two mantle source regions were involved. -from Authors</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70057880','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70057880"><span>Introduction in New perspectives on <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift basins: from tectonics to groundwater</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Hudson, Mark R.; Grauch, V.J.S.</p> <p>2013-01-01</p> <p>Basins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift have long been studied both for their record of rift development and for their potential as host of natural resources. Early workers described the basin geomorphology and the character of infilling sediments (e.g. Siebenthal, 1910; Bryan, 1938; Speigel and Baldwin, 1963), and subsequent research compilations provided general stratigraphic and tectonic overviews of rift basins and described their geophysical characteristics within the crust (Hawley, 1978; Riecker, 1979; Baldridge et al., 1984; Keller, 1986). Subsurface knowledge gained from hydrocarbon exploration activities coupled with detailed surface studies of basins and their flanking uplifts were presented in Geological Society of America (GSA) Special Paper 291, edited by Keller and Cather (1994a).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/12488895','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/12488895"><span>[Chromosome instability induced by agrochemicals among farm workers in Passo Fundo, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Pacheco, Adil de Oliveira; Hackel, Christine</p> <p>2002-01-01</p> <p>A major share of the grain farming (wheat and soybeans) in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul is in the Passo Fundo area. For crop pest control, large amounts of agrochemicals (fungicides, insecticides, and herbicides) are used. To evaluate the genotoxicity of these products, the micronucleus test was performed in farm workers directly exposed to these chemicals. Heparinized blood samples were drawn by venipuncture from 30 exposed workers and 30 non-exposed controls. Micronuclei frequency was evaluated by counting 1,000 binucleated cells per individual in both groups. Smoking habits, age, and duration of exposure showed no effect on the frequency of micronuclei in both groups. However, statistical analysis showed significantly higher mean numbers of binucleated cells with micronuclei in exposed individuals (14.3/1,000 cells) as compared to controls (7.1/1,000 cells), allowing the authors to conclude that the micronucleus test is an efficient biological assay for monitoring population exposure to mixtures of agrochemicals.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21574332','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21574332"><span>[Fragments of history in psychiatric care <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>de Miranda, Francisco Arnoldo Nunes; Santos, Raionara Cristina de Araújo; de Azevedo, Dulcian Medeiros; Fernandes, Rafaella Leite; Costa, Tarciana Sampaio</p> <p>2010-09-01</p> <p>This article aims to rescue aspects of the performing therapeutic of the Day Hospital (HD) Dr Elger Nunes, Natal, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil, during its term, and analyze the results regarding to the number of patients assisted from 1996 to 2004. This is an empirical, descriptive and exploratory study, ex post facto with a quantitative approach, carried out through the analysis of the records of 910 people attended in the hospital. The data was submitted to the informational resource software Microsoft Excel and converted into diagrams. The results show a greater accessibility to this treatment modality, decreasing in hospitalization-time length and improving hospital discharge conditions for users, with reduction in number of patients who interrupted treatment. It focus on the importance of the Day Hospital in the process of psychiatric reform, with care grounded on the use of the humanized therapeutic practices, and still not losing the bond with family and society.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25923631','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25923631"><span>Health and Labour from the Perspective of Railway Dock workers in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Costa, Valdecir; Souza, Katia Reis; Teixeira, Liliane Reis; Hedlund, Charles Jopar; Fernandes Filho, Luiz Antonio; Cardoso, Letícia Silveira</p> <p>2015-04-01</p> <p>The main goal of this study is to understand and analyse the perspective of dockworkers on health and labour at the Railway Dry Port of the Municipality of Uruguaiana in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (RS), Brazil. Sixteen dockworkers participated in the study under the methodological approach of qualitative research. The fieldwork was conducted through individual interviews by applying a semi-structured research script with open-ended questions. For the data analysis, the "discourse analysis" method was adopted, leading to the definition of five thematic categories of interpretation. From the perspective of dockworkers, dock work differs in both the weight of toil, which is hard and intense, and the sense of satisfaction regarding the collaborative and collective aspect of labour, emphasising the human side of labour. Several reports on work accidents and the identification of hazards that may be avoided by implementing changes in the organisation and work conditions were also noted.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27921331','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27921331"><span>Living in Limbo: Latinas' Assessment of Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley Colonias Communities.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Hilfinger Messias, DeAnne K; Sharpe, Patricia A; Del Castillo-González, Lourdes; Treviño, Laura; Parra-Medina, Deborah</p> <p>2016-12-05</p> <p>Community asset mapping (CAM) is the collective process of identifying local assets and strategizing processes to address public health issues and concerns and improve quality of life. Prior to implementing a community-based physical activity intervention with Latinas in the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, promotoras [community health workers] conducted 16 interactive sessions in 8 colonias. The analysis of the transcribed CAM recordings and on-site observational data resulted in the construction of Living in Limbo as the thematic representation of these Latinas' social isolation and marginalization associated with pervasive poverty, undocumented immigration status or lack of citizenship, their fears emanating from threats to physical and emotional safety, and the barriers created by lack of availability and access to resources.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/12892055','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/12892055"><span>Isolations of yellow fever virus from Haemagogus leucocelaenus in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Vasconcelos, Pedro F; Sperb, Alethéa F; Monteiro, Hamilton A; Torres, Maria A; Sousa, Maria R; Vasconcelos, Helena B; Mardini, Lúcia B; Rodrigues, Sueli G</p> <p>2003-01-01</p> <p>Following howling monkey (Alouatta caraya) deaths and yellow fever (YF) antigen detection by immunohistochemistry in the liver sample of a dead monkey in April and May 2001 in the municipalities of Garruchos and Santo Antônio das Missões, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil, epidemiological field investigations were initiated. Two strains of YF virus were isolated in suckling mice from 23 Haemagogus (Conopostegus) leucocelaenus Dyar & Shannon mosquitoes collected from the study sites. The YF virus was isolated from this species in the 1930s in Brazil and in the 1940s in Colombia. No human cases were reported during the current epizootic outbreak. The YF virus isolation and the absence of Hg. (Haemagogus) janthinomys Dyar from the area suggest that Hg. leucocelaenus may be a secondary YF vector and play an important role in the epidemiology of this disease in the Southern Cone.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/10932120','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/10932120"><span>The eolianites between Sanga do Cabral and Botucatu formations in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Nowatzki; Kern</p> <p>2000-06-01</p> <p>This paper discusses the facies distribution of Mesozoic eolian sandstones between the Sanga do Cabral and Botucatu formations and also their contact relationships, in São Leopoldo area, State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (RS), southern Brazil. The main distinctive characteristics regarding these sandstones and formations are the mineralogical composition, paleocurrents and the occurrence of wet interdune deposits. These interdune deposits are characterized by frequent thin mudstone layers with mudcracks, ichnofossils and salt impressions. There are also some features that resemble plant fossils. The distinctive characteristics of these sequences to Sanga do Cabral and Botucatu formations allow us to suggest the informal name of Pedreira Sandstone, considering its type section, the Pedreira Cliff, at Sapucaia do Sul, RS.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2016/5078/sir20165078.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2016/5078/sir20165078.pdf"><span>An international borderland of concern: Conservation of biodiversity in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Leslie,, David M.</p> <p>2016-07-20</p> <p>The Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (LRGV) of southern Texas is located on the United States-Mexico borderland and represents a 240-kilometer (150-mile) linear stretch that ends at the Gulf of Mexico. The LRGV represents a unique transition between temperate and tropical conditions and, as such, sustains an exceptionally high diversity of plants and animals—some of them found in few, or no other, places in the United States. Examples include Leopardus pardalis albescens (northern ocelot) and Falco femoralis septentrionalis (northern aplomado falcon)—both endangered in the United States and emblematic of the LRGV. The U.S. Fish and Wildlife Service (USFWS) manages three national wildlife refuges (Santa Ana, Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, and Laguna Atascosa) that together make up the South Texas Refuge Complex, which actively conserves biodiversity in about 76,006 hectares (187,815.5 acres) of native riparian and upland habitats in the LRGV. These diminished habitats harbor many rare, threatened, and endangered species. This report updates the widely used 1988 USFWS biological report titled “Tamaulipan Brushland of the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of South Texas: Description, Human Impacts, and Management Options” by synthesizing nearly 400 peer-reviewed scientific publications that have resulted from biological and sociological research conducted specifically in the four Texas counties of the LRGV in the past nearly 30 years. This report has three goals: (1) synthesize scientific insights gained since 1988 related to the biology and management of the LRGV and its unique biota, focusing on flora and fauna of greatest conservation concern; (2) update ongoing challenges facing Federal and State agencies and organizations that focus on conservation or key natural resources in the LRGV; and (3) redefine conservation opportunities and land-acquisition strategies that are feasible and appropriate today, given the many new and expanding constraints that challenge conservation</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_14 --> <div id="page_15" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="281"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70012366','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70012366"><span>Geodetic measurement of horizontal deformation across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift near Socorro, New Mexico.</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Savage, J.C.; Lisowski, M.; Prescott, W.H.; Sanford, A.R.</p> <p>1980-01-01</p> <p>Trilateration surveys of a geodetic network across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift near Socorro, New Mexico, in 1972, 73, 76 and 79 have failed to detect any significant strain accumulation. The surveys place an upper bound (95% confidence limit) of 1 mm/a (a = years) on EW spreading across the rift in 1972-79. There is marginal evidence from triangulation for an episode of EW spreading across the rift within the interval 1954-72. The trilateration network lies on the S flank of an uplift caused by magma intrusion into a midcrustal sill during this century according to Reilinger and Oliver. The horizontal deformation induced by sill inflation is sufficiently small that continued uplift during 1972-79 cannot be excluded by the observed absence of significant horizontal deformation.-Authors</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/354873','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/354873"><span>Central and South West Services (CSWS) transmission system studies: (<span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley FACTS studies). Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Arabi, S.; Hamadanizadeh, H.</p> <p>1998-12-01</p> <p>Stability limitations impose constraints on power imports into the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, the southern region of Central Power and Light`s (CPL) system. CPL`s parent company, Central and South West Services, sought to identify viable plans for eliminating these constraints to enable power transfers via two 345-kV transmission lines. This project conducted assessment studies of the CPL system, using applications from EPRI`s Power System Analysis Package, and identified two scenarios as the most likely remedial measures required. These consisted of the addition of generating units and the use of series compensation of the two transmission lines, in conjunction with shunt compensation. While Flexible AC Transmission System (FACTS) devices were not indicated in this study phase, the researchers indicated a Thyristor Controlled Series Compensation device could be considered to address a potential subsynchronous resonance issue.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2001AGUFM.H32B0306H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2001AGUFM.H32B0306H"><span>Solute Sources and Budget for the <span class="hlt">Rio</span> <span class="hlt">Grande</span> above El Paso, Texas</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Hogan, J. F.; Phillips, F. M.; Hendrickx, J. M.</p> <p>2001-12-01</p> <p>Issues of water quality, especially salinity, limit the use of water resources from the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. Identification and quantification of salinity sources is critical for improved river management. In the headwater region salts are typically derived from atmospheric deposition and chemical weathering reactions. Salinity increases during transit may result from both natural (saline groundwater, hydrothermal springs and dissolution of evaporite deposits) and anthropogenic (agricultural return flow and wastewater from sewage treatment plants) sources. These increases are magnified by evapotranspiration (this includes evaporation from open water, transpiration from irrigated agriculture and transpiration from natural riparian areas). With multiple salinity sources and evapotranspiration acting simultaneously, understanding the solute balance for the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at a level needed for improved river management is difficult. We have conducted synoptic sampling of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from the headwaters in Colorado to south of El Paso, Texas. Sampling was conducted in January and August of 2000 and 2001. The total dissolved solids content (TDS) of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> increases from < 50 mg/L in headwater regions of Colorado to > 2000 mg/L south of El Paso, Texas. The Cl/Br (wt/wt) ratio for river water increases from ~50 in the headwaters (typical for atmospheric deposition) to ~700 in the lower basin. This increase in Cl/Br ratio demonstrates the importance of additional salinity sources. Three end-members are recognized using Cl/Br mixing plots for winter samples: atmospheric deposition, a hydrothermal end-member localized around Truth of Consequences, NM, and a third end-member that may represent groundwater. Samples collected during the summer months are shifted off the winter mixing lines indicating concentration through ET. Increases in salinity were not a simple function of distance downriver, but rather occurred in a series of steps. Some of these steps are correlated with</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70154861','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70154861"><span>Water quality and amphibian health in the Big Bend region of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Sharma, Bibek; Hu, F.; Carr, J.A.; Patino, Reynaldo</p> <p>2011-01-01</p> <p>Male and female <span class="hlt">Rio</span> <span class="hlt">Grande</span> leopard frogs (Rana berlandieri) were collected in May 2005 from the main stem and tributaries of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Big Bend region of Texas. Frogs were examined for (1) incidence of testicular ovarian follicles in males; (2) thyroid epithelial cell height, a potential index of exposure to thyroid-disrupting contaminants; and (3) incidence of liver melanomacrophage aggregates, a general index of exposure to contaminants. Standard parameters of surface water quality and concentrations of selected elements, including heavy metals, were determined at each frog collection site. Heavy metals also were measured in whole-frog composite extracts. Water cadmium concentrations in most sites and chloride concentrations in the main stem exceeded federal criteria for freshwater aquatic life. Mercury was detected in frogs from the two collection sites in Terlingua Creek. There was a seventeen percent incidence of testicular ovarian follicles in male frogs. Mean thyroid epithelial cell height was greater in frogs from one of the Terlingua Creek sites (Terlingua Abajo). No differences were observed in the incidence of hepatic macrophage aggregates among sites. In conclusion, although potential cause-effect relationships between indices of habitat quality and amphibian health could not be established, the results of this study raise concerns about the general quality of the aquatic habitat and the potential long-term consequences to the aquatic biota of the Big Bend region. The presence of ovarian follicles in male frogs is noteworthy but further study is necessary to determine whether this phenomenon is natural or anthropogenically induced.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25453027','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25453027"><span>Pathogenic Landscape of Transboundary Zoonotic Diseases in the Mexico-US Border Along the <span class="hlt">Rio</span> <span class="hlt">Grande</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Esteve-Gassent, Maria Dolores; Pérez de León, Adalberto A; Romero-Salas, Dora; Feria-Arroyo, Teresa P; Patino, Ramiro; Castro-Arellano, Ivan; Gordillo-Pérez, Guadalupe; Auclair, Allan; Goolsby, John; Rodriguez-Vivas, Roger Ivan; Estrada-Franco, Jose Guillermo</p> <p>2014-01-01</p> <p>Transboundary zoonotic diseases, several of which are vector borne, can maintain a dynamic focus and have pathogens circulating in geographic regions encircling multiple geopolitical boundaries. Global change is intensifying transboundary problems, including the spatial variation of the risk and incidence of zoonotic diseases. The complexity of these challenges can be greater in areas where rivers delineate international boundaries and encompass transitions between ecozones. The <span class="hlt">Rio</span> <span class="hlt">Grande</span> serves as a natural border between the US State of Texas and the Mexican States of Chihuahua, Coahuila, Nuevo León, and Tamaulipas. Not only do millions of people live in this transboundary region, but also a substantial amount of goods and people pass through it everyday. Moreover, it occurs over a region that functions as a corridor for animal migrations, and thus links the Neotropic and Nearctic biogeographic zones, with the latter being a known foci of zoonotic diseases. However, the pathogenic landscape of important zoonotic diseases in the south Texas-Mexico transboundary region remains to be fully understood. An international perspective on the interplay between disease systems, ecosystem processes, land use, and human behaviors is applied here to analyze landscape and spatial features of Venezuelan equine encephalitis, Hantavirus disease, Lyme Borreliosis, Leptospirosis, Bartonellosis, Chagas disease, human Babesiosis, and Leishmaniasis. Surveillance systems following the One Health approach with a regional perspective will help identifying opportunities to mitigate the health burden of those diseases on human and animal populations. It is proposed that the Mexico-US border along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> region be viewed as a continuum landscape where zoonotic pathogens circulate regardless of national borders.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFMGP23A1001S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFMGP23A1001S"><span>SAGE 2010 Magnetotelluric Soundings Provide New Constraints on <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift Mid-Crustal Conductor</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Strader, A. E.; Martin, C. L.; Thomas, T.; Bedrosian, P. A.; Pellerin, L.; Jiracek, G. R.</p> <p>2010-12-01</p> <p>Since the inception of the Summer of Applied Geophysical Experience (SAGE) program in 1983, long-period magnetotelluric (MT) soundings have imaged a pronounced mid-crustal conductor at 10-20 km depth within the central <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. Wideband MT soundings (0.01 to over 1000 s period) collected in 2010 extended the detection of this feature to nearly 100 km length along the rift axis in the vicinity of Santa Fe, New Mexico. The conductive anomaly is clearly defined in the longest periods of the mode identified as the transverse electric (TE) in the recently acquired MT data. The spatially-limited 2010 soundings in the Santo Domingo Basin do not allow two-dimensional (2-D) inversions; however, one-dimensional (1-D) inversion of TE mode measurements in conductive rift basins can yield good depth estimates of deep conductive layers as has been shown by 2-D rift MT modeling. Such 1-D inversions of the 2010 MT soundings yield ~20 km depth to the top of the mid-crustal conductor, 5-10 km deeper than 90 km to the north if 3-D effects are negligible. Estimated conductance of the Santo Domingo basin conductor is 2000 S with resistivities in the range of 2-10 ohm-m. An interpretation of the ubiquitous, mid-crustal conductor in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift is interconnected, saline, aqueous fluid trapped in the ductile crust below the ~10 km-deep seismogenic zone after fluid release and upward ascent from an upwarped mantle.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/947333','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/947333"><span>Use of a dynamic simulation model to understand nitrogen cycling in the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, NM.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Meixner, Tom; Tidwell, Vincent Carroll; Oelsner, Gretchen; Brooks, Paul; Roach, Jesse D.</p> <p>2008-08-01</p> <p>Water quality often limits the potential uses of scarce water resources in semiarid and arid regions. To best manage water quality one must understand the sources and sinks of both solutes and water to the river system. Nutrient concentration patterns can identify source and sink locations, but cannot always determine biotic processes that affect nutrient concentrations. Modeling tools can provide insight into these large-scale processes. To address questions about large-scale nitrogen removal in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, NM, we created a system dynamics nitrate model using an existing integrated surface water--groundwater model of the region to evaluate our conceptual models of uptake and denitrification as potential nitrate removal mechanisms. We modeled denitrification in groundwater as a first-order process dependent only on concentration and used a 5% denitrification rate. Uptake was assumed to be proportional to transpiration and was modeled as a percentage of the evapotranspiration calculated within the model multiplied by the nitrate concentration in the water being transpired. We modeled riparian uptake as 90% and agricultural uptake as 50% of the respective evapotranspiration rates. Using these removal rates, our model results suggest that riparian uptake, agricultural uptake and denitrification in groundwater are all needed to produce the observed nitrate concentrations in the groundwater, conveyance channels, and river as well as the seasonal concentration patterns. The model results indicate that a total of 497 metric tons of nitrate-N are removed from the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> annually. Where river nitrate concentrations are low and there are no large nitrate sources, nitrate behaves nearly conservatively and riparian and agricultural uptake are the most important removal mechanisms. Downstream of a large wastewater nitrate source, denitrification and agricultural uptake were responsible for approximately 90% of the nitrogen removal.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3460974','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3460974"><span>Prevalence and Concomitants of Arthritis in the Elderly in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Blay, Sergio L.; Fillenbaum, Gerda G.; Andreoli, Sergio B.; Gastal, Fábio L.</p> <p>2012-01-01</p> <p>Objectives Information on the prevalence and concomitants of arthritis in developing countries is sparse. It is unclear whether they are comparable to findings in developed countries. To ascertain the prevalence, demographic characteristics, and health-related concomitants of arthritis in older persons in the southern state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, a middle income country. Methods The state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, was subdivided into nine regions. Stratified random sampling was used to identify 880 community residents age ≥60 years in each region. One region with suspect data was excluded. Of 7040 community residents contacted in eight regions, 6963 participated (1.1% refusal rate). In 1995, trained, monitored interviewers, using structured questionnaires, conducted in-home interviews gathering information on demographic characteristics (age, sex, race/ethnicity, education, income, living arrangements, employment status), health behaviors (physical activity, tobacco use, social activity), functional limitations, depression, and 15 self-reported health conditions, including arthritis. Data were analyzed using descriptive statistics and logistic regression. Results Arthritis, reported by 43% of the sample, was more prevalent in women, among the less educated, those with lower income, and higher age. Severity, but not prevalence, differed by race/ethnicity. Controlled analyses indicated significant association with female gender, lower education, and less social activity. Arthritis was associated with reduced odds of stroke, but increased odds of hypertension, varicosities, bronchitis, renal problems, headache, gastrointestinal disorders, and depression. Arthritis was not significantly associated with age or functional limitations, and associations did not differ by gender. Conclusions The prevalence, demographic and health characteristics associated with self-reported arthritis in this southern state in Brazil are similar to findings elsewhere in Brazil</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70031373','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70031373"><span>Ages of Quaternary <span class="hlt">Rio</span> <span class="hlt">Grande</span> terrace-fill deposits, Albuquerque area, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Cole, J.C.; Mahan, S.A.; Stone, B.D.; Shroba, R.R.</p> <p>2007-01-01</p> <p>Results from luminescence dating on 13 samples from the Albuquerque area show that major-drainage fluvial deposits represent significant periods of aggradation that formed paired, correlatable terraces on the east and west margins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley. The youngest terrace fills (Primero Alto) formed during late Pleistocene as a result of streamflow variations with climate cooling during Marine Oxygen-Isotope Stage 3; our ages suggest aggradation of the upper part of the fill occurred at about 47-40 ka. Deposits of the second (Segundo Alto) terraces reached maximum height during climate cooling in the early part of Marine Oxygen-Isotope Stage 5 as late as 90-98 ka (based on dated basalt flows). Our luminescence ages show considerable scatter and tend to be younger (range from 63 ka to 162 ka). The third (Tercero Alto) and fourth (Cuarto Alto) terraces are dated on the basis of included volcanic tephra. Tercero Alto terrace-fill deposits contain the Lava Creek B tephra (639 ka), and Cuarto Alto terrace-fill deposits contain tephra of the younger Bandelier Tuff eruption (1.22 Ma), the Cerro Toledo Rhyolite (1.47 Ma), and the older Bandelier Tuff eruption (1.61 Ma). These periods of aggradation culminated in fluvial terraces that are preserved at maximum heights of 360 ft (Cuarto Alto), 300 ft (Tercero Alto), 140 ft (Segundo Alto), and 60 ft (Primero Alto) above the modern flood-plain. Despite lithologic differences related to local source-area contributions, these terracefill deposits can be correlated across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and up- and down-valley for tens of miles based on maximum height of the terrace above the modern floodplain.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMDI21A2590B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMDI21A2590B"><span>Seismic Anisotropy Beneath the Eastern Flank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Benton, N. W.; Pulliam, J.</p> <p>2015-12-01</p> <p>Shear wave splitting was measured across the eastern flank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR) to investigate mechanisms of upper mantle anisotropy. Earthquakes recorded at epicentral distances of 90°-130° from EarthScope Transportable Array (TA) and SIEDCAR (SC) broadband seismic stations were examined comprehensively, via the Matlab program "Splitlab", to determine whether SKS and SKKS phases indicated anisotropic properties. Splitlab allows waveforms to be rotated, filtered, and windowed interactively and splitting measurements are made on a user-specified waveform segment via three independent methods simultaneously. To improve signal-to-noise and improve reliability, we stacked the error surfaces that resulted from grid searches in the measurements for each station location. Fast polarization directions near the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift tend to be sub-parallel to the RGR but then change to angles that are consistent with North America's average plate motion, to the east. The surface erosional depression of the Pecos Valley coincides with fast polarization directions that are aligned in a more northerly direction than their neighbors, whereas the topographic high to the east coincides with an easterly change of the fast axis.The area above a mantle high velocity anomaly discovered separately via seismic tomography which may indicate thickened lithosphere, corresponds to unusually large delay times and fast polarization directions that are more closely aligned to a north-south orientation. The area of southeastern New Mexico that falls between the mantle fast anomaly and the Great Plains craton displays dramatically smaller delay times, as well as changes in fast axis directions toward the northeast. Changes in fast axis directions may indicate flow around the mantle anomaly; small delay times could indicate vertical or attenuated flow.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015ISPAr.XL7..353C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015ISPAr.XL7..353C"><span>Forest Cover Change and Soil Erosion in Toledo's <span class="hlt">Rio</span> <span class="hlt">Grande</span> Watershed</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Chicas, S.; Omine, K.</p> <p>2015-04-01</p> <p>Toledo, the southernmost district, is the hub of Belize's Mayan population, descendants of the ancient Mayan civilization. The Toledo District is primarily inhibited by Kekchi and Mopan Mayans whose subsistence needs are met by the Milpa slash-and-burn agricultural system and the extraction of forest resources. The poverty assessment in the country indicates that Toledo is the district with the highest percentage of household an individual indigence of 37.5 % and 49.7 % respectively. Forest cover change in the area can be attributed to rapid population growth among the Maya, together with increase in immigration from neighboring countries, logging, oil exploration and improvement and construction of roads. The forest cover change analysis show that from 2001 to 2011 there was a decrease of Lowland broad-leaved wet forest of 7.53 km sq, Shrubland of 4.66 km sq, and Wetland of 0.08 km sq. Forest cover change has resulted in soil erosion which is causing the deterioration of soils. The land cover types that are contributing the most to total erosion in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> watershed are no-forest, lowland broad-leaved wet forest and submontane broad-leaved wet forest. In this study the Revised Universal Soil Loss Equation (RUSLE) was employed in a GIS platform to quantify and assess forest cover change and soil erosion. Soil erosion vulnerability maps in Toledo's <span class="hlt">Rio</span> <span class="hlt">Grande</span> watershed were also created. This study provides scientifically sound information in order to understand and respond effectively to the impacts of soil erosion in the study site.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/22079795','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/22079795"><span>Plants used as antidiabetics in popular medicine in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, southern Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Trojan-Rodrigues, M; Alves, T L S; Soares, G L G; Ritter, M R</p> <p>2012-01-06</p> <p>Plants are widely as antidiabetics. The study of these plants is essential because many of them may have undesirable effects, such as acute or chronic toxicity; or their use may even delay or discourage the adoption of the proper and effective treatment. The present study surveyed the plant species that are popularly used to treat diabetes mellitus in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul in southern Brazil. Sixteen ethnobotanical surveys performed in the state were consulted, and the species used to treat diabetes were listed. For species cited in at least two of the studies, scientific data related to antidiabetic activity were searched in the ISI Knowledge database. The scientific binomial of each species was used as keywords, and data found in review papers were also included. A total of 81 species in 42 families were mentioned; the most important families were Asteraceae and Myrtaceae. Twenty eight species were cited at least twice as being used to treat diabetes in the state. For 11 of these, no scientific data regarding antidiabetic activity could be located. The species most frequently mentioned for use with diabetes were Syzygium cumini (Myrtaceae) and Bauhinia forficata (Fabaceae), in 12 studies each, followed by Sphagneticola trilobata (Asteraceae), in six studies; and Baccharis trimera (Asteraceae), Bidens pilosa (Asteraceae), Cynara scolymus (Asteraceae), and Leandra australis (Melastomataceae) in four studies each. Bauhinia forficata and Syzygium cumini have been studied in more detail for antidiabetic activity. A considerable number of plant species are traditionally used for the treatment of diabetes melitus in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State. The majority of those plants that have been studied for antidiabetic activity showed promising results, mainly for Bauhinia forficata and Syzygium cumini. However, for most of the plants mentioned, the studies are not sufficient to guarantee the efficacy and safety in the use of these plants in the treatment against</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5387460','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5387460"><span>The decompensative gravity anomaly and deep structure of the region of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Cordell, L. ); Zorin, Y.A. ); Keller, G.R. )</p> <p>1991-04-10</p> <p>An isostatic correction is commonly made to Bouguer anomaly gravity data to remove the gravity effect of isostatic compensation of topographic loads. In the USSR a decompensative correction has then been made to the isostatic gravity anomaly to remove the gravity effect of isostatic compensation of geologic loads as well. The authors employ here calculations in the wave number domain, leading to an efficient and exact solution. In a 1,200 {times} 1,200 km region centered on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift the decompensative correction ranges from about {minus}35 to +25 mGal. The decompensative anomaly, highlights an arcuate gravity low and a system of gravity highs inferred to reflect prerift welts of mass concentration which have indirectly influenced the position of the rift and its segmentation and zones of accommodation. Under the assumptions made, if the decompensative anomaly is subtracted from the Bouguer anomaly, then the residual is the gravity anomaly field of deep structure, without gravity effects of shallow sources in the upper crust. Using available seismic data to (weakly) constrain the Moho surface, they invert the residual gravity field for topography of the base of the lithosphere. Lithosphere is found to be 200 km thick in the High Plains; 40-50 km in the eastern Great Basin; 75-100 km in the Colorado Plateau, and as thin as 40 km in the southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. In the area studied, the thickness of the lithospere is everwhere greater than that of the crust. The separation of gravity effects made possible by the decompensative correction shows how the rift is fundamentally controlled by thinning of the lithosphere, yet in detail is deflected by long-lived tectonic welts in the shallow, brittle crust.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUFM.T21B2548H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUFM.T21B2548H"><span>Magnetotelluric apparent conductivity and seismic p-wave tomography comparison, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, Southwestern USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Harding, J.; Sheehan, A. F.; Feucht, D. W.; Bedrosian, P.; O'Rourke, C. T.</p> <p>2013-12-01</p> <p>During the summers of 2012 and 2013, magnetotelluric (MT) data was collected in three transects across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift in Colorado and New Mexico. Previous seismological studies, including both regional deployments and EarthScope USArray Transportable Array (TA), have shown that a wide area of upper mantle below the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift is seismically slow, but the cause of this is unclear. MT has the potential to help reduce the ambiguity in determining the cause of the seismically slow anomaly. Electrical conductivity determined from MT and elastic parameters determined from seismic experiments have different sensitivities to temperature, partial melt, hydration and composition; together these methods can be used to constrain the physical, chemical, and thermal state of the lithosphere, and to investigate changes in it throughout the rift. These constraints can help distinguish between different rift opening models such as the rift unzipping south to north or being rotated open. We have used a cross correlation algorithm to pick teleseismic P-wave arrival times from twenty-two events recorded by TA stations in Colorado and New Mexico from 2008 - 2010. Our teleseismic picks were used to create maps and profiles of travel time residuals that can be compared with existing tomographic images and with our new MT data. We have forward modeled select MT data to produce 1-D models of conductivity versus depth, which can then be compared to the average travel time residuals at TA stations in proximity to the MT profile. The travel time residuals across the three MT lines are also qualitatively compared to cross-sections of the Schmandt & Humphreys (2010) P-wave tomography model.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4233934','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4233934"><span>Pathogenic Landscape of Transboundary Zoonotic Diseases in the Mexico–US Border Along the <span class="hlt">Rio</span> <span class="hlt">Grande</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Esteve-Gassent, Maria Dolores; Pérez de León, Adalberto A.; Romero-Salas, Dora; Feria-Arroyo, Teresa P.; Patino, Ramiro; Castro-Arellano, Ivan; Gordillo-Pérez, Guadalupe; Auclair, Allan; Goolsby, John; Rodriguez-Vivas, Roger Ivan; Estrada-Franco, Jose Guillermo</p> <p>2014-01-01</p> <p>Transboundary zoonotic diseases, several of which are vector borne, can maintain a dynamic focus and have pathogens circulating in geographic regions encircling multiple geopolitical boundaries. Global change is intensifying transboundary problems, including the spatial variation of the risk and incidence of zoonotic diseases. The complexity of these challenges can be greater in areas where rivers delineate international boundaries and encompass transitions between ecozones. The <span class="hlt">Rio</span> <span class="hlt">Grande</span> serves as a natural border between the US State of Texas and the Mexican States of Chihuahua, Coahuila, Nuevo León, and Tamaulipas. Not only do millions of people live in this transboundary region, but also a substantial amount of goods and people pass through it everyday. Moreover, it occurs over a region that functions as a corridor for animal migrations, and thus links the Neotropic and Nearctic biogeographic zones, with the latter being a known foci of zoonotic diseases. However, the pathogenic landscape of important zoonotic diseases in the south Texas–Mexico transboundary region remains to be fully understood. An international perspective on the interplay between disease systems, ecosystem processes, land use, and human behaviors is applied here to analyze landscape and spatial features of Venezuelan equine encephalitis, Hantavirus disease, Lyme Borreliosis, Leptospirosis, Bartonellosis, Chagas disease, human Babesiosis, and Leishmaniasis. Surveillance systems following the One Health approach with a regional perspective will help identifying opportunities to mitigate the health burden of those diseases on human and animal populations. It is proposed that the Mexico–US border along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> region be viewed as a continuum landscape where zoonotic pathogens circulate regardless of national borders. PMID:25453027</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://geoinfo.nmt.edu/publications/periodicals/nmg/home.cfml','USGSPUBS'); return false;" href="http://geoinfo.nmt.edu/publications/periodicals/nmg/home.cfml"><span>Ages of Quaternary <span class="hlt">Rio</span> <span class="hlt">Grande</span> terrace-fill deposits, Albuquerque area, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>,; Mahan, Shannon; Stone, Byron D.; Shroba, Ralph R.</p> <p>2007-01-01</p> <p>Results from luminescence dating on 13 samples from the Albuquerque area show that major-drainage fluvial deposits represent significant periods of aggradation that formed paired, correlatable terraces on the east and west margins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley . The youngest terrace fills (Primero Alto) formed during late Pleistocene as a result of streamflow variations with climate cooling during Marine Oxygen-Isotope Stage 3; our ages suggest aggradation of the upper part of the fill occurred at about 47–40 ka . Deposits of the second (Segundo Alto) terraces reached maximum height during climate cooling in the early part of Marine Oxygen-Isotope Stage 5 as late as 90–98 ka (based on dated basalt flows) . Our luminescence ages show considerable scatter and tend to be younger (range from 63 ka to 162 ka) . The third (Tercero Alto) and fourth (Cuarto Alto) terraces are dated on the basis of included volcanic tephra. Tercero Alto terrace-fill deposits contain the Lava Creek B tephra (639 ka), and Cuarto Alto terrace-fill deposits contain tephra of the younger Bandelier Tuff eruption (1 .22 Ma), the Cerro Toledo Rhyolite (1 .47 Ma), and the older Bandelier Tuff eruption (1 .61 Ma). These periods of aggradation culminated in fluvial terraces that are preserved at maximum heights of 360 ft (Cuarto Alto), 300 ft. (Tercero Alto), 140 ft (Segundo Alto), and 60 ft. (Primero Alto) above the modern floodplain. Despite lithologic differences related to local source-area contributions, these terracefill deposits can be correlated across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and up- and down-valley for tens of miles based on maximum height of the terrace above the modern floodplain.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/22990826','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/22990826"><span>Herpetofauna of Núcleo Experimental de Iguaba <span class="hlt">Grande</span>, <span class="hlt">Rio</span> de Janeiro state, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Martins, A R; Bruno, S F; Navegantes, A Q</p> <p>2012-08-01</p> <p>The Atlantic Rain forest, which is considered the second largest pluvial forest in the American continent, has had an estimated 93% of its original area destroyed. Although studies concerning the herpetofaunal diversity in this biome have been intensified in the past years, its diversity is still underestimated. The Nucleo Experimental de Iguaba <span class="hlt">Grande</span> (NEIG) is included in an Environmental Protection Area (APA de Sapeatiba) in the Iguaba <span class="hlt">Grande</span> municipality, <span class="hlt">Rio</span> de Janeiro state, Brazil (22º 51' S and 42º 10' W). The goal of this study was to conduct an inventory of the reptile and amphibian species that occur in this area between July 2008 and December 2009. We recorded 19 species of amphibians (18 anurans and one caecilian) and 15 species of reptiles (three lizards, 11 snakes and one amphisbaenian). Leptodactylus latrans and L. mystacinus had the highest capture rates among amphibians captured, and among reptiles, Ameiva ameiva, Hemidactylus mabouia and Mabuya agilis had the highest capture rates. Rarefaction curves for both amphibians and reptiles did not reach the asymptote, indicating that the species richness in the NEIG is still underestimated.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26964429','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26964429"><span>Human migration, railways and the geographic distribution of leprosy in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte State--Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Nobre, Mauricio Lisboa; Dupnik, Kathryn Margaret; Nobre, Paulo José Lisboa; Freitas De Souza, Márcia Célia; Dűppre, Nádia Cristina; Sarno, Euzenir Nunes; Jerŏnimo, Selma Maria Bezerra</p> <p>2015-12-01</p> <p>Leprosy is a public health problem in Brazil where 31,044 new cases were detected in 2013. <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte is a small Brazilian state with a rate of leprosy lower than other areas in the same region, for unknown reasons. We present here a review based on the analysis of a database of registered leprosy cases in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte state, comparing leprosy's geographic distribution among municipalities with local socio-economic and public health indicators and with historical documents about human migration in this Brazilian region. The current distribution of leprosy in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte did not show correlation with socio-economic or public health indicators at the municipal level, but it appears related to economically emerging municipalities 100 years ago, with spread facilitated by railroads and train stations. Drought-related migratory movements which occurred from this state to leprosy endemic areas within the same period may be involved in the introduction of leprosy and with its present distribution within <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte. Leprosy may disseminate slowly, over many decades in certain circumstances, such as in small cities with few cases. This is a very unusual situation currently and a unique opportunity for epidemiologic studies of leprosy as an emerging disease.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5350582','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5350582"><span>Human migration, railways and the geographic distribution of leprosy in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte State – Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Nobre, Mauricio Lisboa; Dupnik, Kathryn Margaret; Nobre, Paulo José Lisboa; De Souza, Márcia Célia Freitas; Dűppre, Nádia Cristina; Sarno, Euzenir Nunes; Jerŏnimo, Selma Maria Bezerra</p> <p>2016-01-01</p> <p>Summary Introduction Leprosy is a public health problem in Brazil where 31,044 new cases were detected in 2013. <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte is a small Brazilian state with a rate of leprosy lower than other areas in the same region, for unknown reasons. Objectives We present here a review based on the analysis of a database of registered leprosy cases in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte state, comparing leprosy's geographic distribution among municipalities with local socio-economic and public health indicators and with historical documents about human migration in this Brazilian region. Results The current distribution of leprosy in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte did not show correlation with socio-economic or public health indicators at the municipal level, but it appears related to economically emerging municipalities 100 years ago, with spread facilitated by railroads and train stations. Drought-related migratory movements which occurred from this state to leprosy endemic areas within the same period may be involved in the introduction of leprosy and with its present distribution within <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte. Conclusions Leprosy may disseminate slowly, over many decades in certain circumstances, such as in small cities with few cases. This is a very unusual situation currently and a unique opportunity for epidemiologic studies of leprosy as an emerging disease. PMID:26964429</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28813106','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28813106"><span>First record of Scybalocanthon nigriceps (Harold, 1868) (Coleoptera: Scarabaeidae: Scarabaeinae) in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state, southern Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ferreira, Sheila C; Mare, Rocco A DI; Silva, Pedro G DA</p> <p>2017-01-01</p> <p>The dung beetle, Scybalocanthon nigriceps (Harold, 1868), is recorded in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state, Brazil, for the first time, at the Moreno Fortes Biological Reserve, municipality of Dois Irmãos das Missões, northwest region of the state, expanding the area of occurrence and distribution of this species in the country.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_15 --> <div id="page_16" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="301"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=307769','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=307769"><span>Assessing climate change impacts on water availability of snowmelt-dominated basins of the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Study Region- Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Colorado and New Mexico, USA: Climate change is predicted to further limit the water availability of the arid southwestern U.S. In this study, the Snowmelt Runoff Model is used to evaluate impacts of increased temperature and altered precipitation on snow covered are...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/28530','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/28530"><span>Hydraulic analysis and double mass curves of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Cochiti to San Marcial, New Mexico</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Jason M. Albert</p> <p>2004-01-01</p> <p>The Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> located in Central New Mexico is one of the most historically documented rivers in the United States. Since the early 20th century regulatory agencies have been interested and concerned with its management. A Hydraulic Modeling Analysis (HMA) of the Corrales reach, located 34 miles downstream of Cochiti Dam, was conducted. An extensive collection...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=8076&keyword=machines&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=8076&keyword=machines&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50"><span>DIETARY CHARACTERIZATIONS IN A STUDY OF HUMAN EXPOSURES IN THE LOWER <span class="hlt">RIO</span> <span class="hlt">GRANDE</span> VALLEY:II. HOUSEHOLD WATERS</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>The Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley Environmental Study (LRGVES) was designed to evaluate multiple forms of exposure to Valley residents because of community concerns of possible adverse health effects from environmental conditions. This is the second of two papers that describe the diet...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=8076&keyword=Taste+AND+organic+AND+products&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=91077051&CFTOKEN=23500756','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=8076&keyword=Taste+AND+organic+AND+products&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=91077051&CFTOKEN=23500756"><span>DIETARY CHARACTERIZATIONS IN A STUDY OF HUMAN EXPOSURES IN THE LOWER <span class="hlt">RIO</span> <span class="hlt">GRANDE</span> VALLEY:II. HOUSEHOLD WATERS</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>The Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley Environmental Study (LRGVES) was designed to evaluate multiple forms of exposure to Valley residents because of community concerns of possible adverse health effects from environmental conditions. This is the second of two papers that describe the diet...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/34669','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/34669"><span>The effects of wildfire on native tree species in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> bosques of New Mexico</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Brad Johnson; David Merritt</p> <p>2009-01-01</p> <p>The cottonwood bosques along the Middle Fork of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> (MRG) form a ribbon of surviving habitat in this once vast ecosystem. Historically, the channel had a multi-threaded and braided configuration that created a rich mosaic of habitats, including mixed-aged cottonwood forests, meadows, and willow-dominated riparian wetlands and backwaters (...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/28514','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/28514"><span>Hydraulic modeling analysis of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> River from Cochiti Dam to Galisteo Creek, New Mexico</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Susan J. Novak</p> <p>2006-01-01</p> <p>Sedimentation problems with the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> have made it a subject of study for several decades for many government agencies involved in its management and maintenance. Since severe bed aggradation in the river began in the late 1800's, causing severe flooding and destroying farmland, several programs have been developed to restore the river while...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2011-04-19/pdf/2011-9425.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2011-04-19/pdf/2011-9425.pdf"><span>76 FR 21855 - <span class="hlt">Rio</span> <span class="hlt">Grande</span> National Forest, Divide Ranger District; Mineral County, CO; Village at Wolf Creek...</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-04-19</p> <p>... Forest Service <span class="hlt">Rio</span> <span class="hlt">Grande</span> National Forest, Divide Ranger District; Mineral County, CO; Village at Wolf... totaling approximately 204 acres. The non-Federal parcel is located in T37N., R2E., NMPM, Mineral County..., Mineral County, CO, Sections 3, 4, 5, and 9. DATES: Formal scoping on this project begins on April...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://eric.ed.gov/?q=Mexican+AND+War&pg=7&id=ED220223','ERIC'); return false;" href="https://eric.ed.gov/?q=Mexican+AND+War&pg=7&id=ED220223"><span>Mexican Migrations to the U.S., 1900-1920, with a Focus on the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Miller, Hubert J.</p> <p></p> <p>Migrations from 1900-1920 were analyzed, focusing on the overall pattern of Mexican migrations to the United States during the two decades; migrations to Texas, the major recipient of migrants during the period; and migrations into the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley. Data were based on official registrations either entering the United States or leaving…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/42437','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/42437"><span>Irrigation in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, New Mexico: A study and annotated bibliography of the development of irrigation systems</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Frank E. Wozniak</p> <p>1998-01-01</p> <p>This publication reviews both published and unpublished sources on Puebloan, Hispanic, and AngloAmerican irrigation systems in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley. Settlement patterns and Spanish and Mexican land grants in the valley are also discussed. The volume includes an annotated bibliography.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=253902','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=253902"><span>Using aerial photography for mapping giant reed infestations along the Texas-Mexico portion of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>.</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Giant reed (Arundo donax L.) is an invasive weed throughout the southern half of the United States with the densest stands growing along the coastal rivers of southern California and the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Texas. The objective of this study was to use aerial photography to map giant reed infestations and...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=266518','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=266518"><span>Mapping giant reed (Arundo donax) infestations along the Texas-Mexico portion of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> using aerial photography</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Giant reed is an invasive weed throughout the southern half of the United States with the densest stands growing along the coastal rivers of southern California and the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Texas. The objective of this study was to use aerial photography to map giant reed infestations and estimate infested...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3768361','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3768361"><span>Molecular analysis of the iap gene of Listeria monocytogenes isolated from cheeses in <span class="hlt">rio</span> <span class="hlt">grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>de Mello, Jozi Fagundes; Einsfeldt, Karen; Frazzon, Ana Paula Guedes; da Costa, Marisa; Frazzon, Jeverson</p> <p>2008-01-01</p> <p>The polymorphic region sequences in the iap gene were analyzed in 25 strains of Listeria monocytogenes isolated from cheeses in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, and compared with reference strains. This investigation distinguished two clusters of L. monocytogenes: I (20 strains) and II (5 strains). PMID:24031198</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=War+AND+Mexico&pg=6&id=ED220223','ERIC'); return false;" href="http://eric.ed.gov/?q=War+AND+Mexico&pg=6&id=ED220223"><span>Mexican Migrations to the U.S., 1900-1920, with a Focus on the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Miller, Hubert J.</p> <p></p> <p>Migrations from 1900-1920 were analyzed, focusing on the overall pattern of Mexican migrations to the United States during the two decades; migrations to Texas, the major recipient of migrants during the period; and migrations into the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley. Data were based on official registrations either entering the United States or leaving…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/35697','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/35697"><span>A preliminary riparian/wetland vegetation community classification of the Upper and Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> watersheds in New Mexico</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Paula Durkin; Esteban Muldavin; Mike Bradley; Stacey E. Carr</p> <p>1996-01-01</p> <p>The riparian wetland vegetation communities of the upper and middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> watersheds in New Mexico were surveyed in 1992 through 1994. The communities are hierarchically classified in terms of species composition and vegetation structure. The resulting Community Types are related to soil conditions, hydrological regime, and temporal dynamics. The classification is...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=281806','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=281806"><span>Susceptibility of redbanded and conchuela stink bugs from the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley to organophosphate and pyrethroid insecticides</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>We report the susceptibility of 2 stink bug species, red banded stink bug (RBSB), Piezodorus guildinii, (Westwood) and conchuela stinkbug, Chlorochroa ligata (Say) collected in the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley to selected pyrethroid and organophosphate technical grade insecticides. The adult glass ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=219327','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=219327"><span>Release and recovery of exotic parasitoids of Bemisia tabaci in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of Texas</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>An intensive field program was conducted in the subtropical Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of Texas (LRGV) to evaluate the establishment of the imported parasitoids of B. tabaci. Thirty populations/species of Eretmocerus and Encarsia parasitoids were mass reared for field release in multiple agricultural c...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/EJ859486.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/EJ859486.pdf"><span>School and Public Youth Librarians as Health Information Gatekeepers: Research from the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of Texas</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Lukenbill, Bill; Immroth, Barbara</p> <p>2009-01-01</p> <p>This study investigated how school and public librarians can become better disseminators of health information and improve health information literacy in small and rural communities in a selected research area. We used the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of Texas as our study area, composed of the economically depressed Cameron, Hidalgo, Starr, and…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3768890','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3768890"><span>A prospective study on Aeromonas in outpatients with diarrhea in the central region of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Prediger, Karoline deCampos; Pereira, Renata da Silva; Winckler Neto, Carlos Hugo Del Priore; Santos, Roberto Christ Vianna; Fadel-Picheth, Cyntia Maria Telles; Vizzotto, Bruno Stefanello</p> <p>2012-01-01</p> <p>Aeromonas spp. were identified in five (2,7%) of 182 diarrheal stool cultures, A. caviae was predominant, resistant mainly to ampicillin and cephalotin. This is the first study showing the presence of Aeromonas spp. in diarrheal stools of outpatients in the central region of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil. PMID:24031914</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/19948319','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/19948319"><span>Population data of 17 Y-STR loci from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state (South Brazil).</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Schwengber, Solange P; Kommers, Trícia; Matte, Cecília H F; Raimann, Paulo E; Carvalho, Bianca A; Leite, Fabio P N; Medeiros, Marcelo A; Souza, Luis F; Castro, Cibele S; Chassot, Fernanda G C; Bonatto, Sandro L</p> <p>2009-12-01</p> <p>A sample of 255 Brazilian males from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (RS), the Brazilian southernmost state, was typed for 17 Y-STR loci (DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635, YGATA_H4.1 and DYS385ab). A total of 247 haplotypes were identified, of which 239 were unique and eight were found in two individuals each. The haplotype diversity (99.98%) and discrimination capacity (96.86%) were calculated. Pairwise haplotype distances showed that the RS population is not significantly different from Brazil, <span class="hlt">Rio</span> de Janeiro, and Argentina, is different from São Paulo, Italy, and North Portugal, and is very distant from Spain, the Amazon region, Germany, and South Amerindians. When the RS data was separated in the seven geopolitical regions, some pairs of regions were significantly different; however no region was different from the whole Brazilian sample.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004HydJ...12..359P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004HydJ...12..359P"><span>Hydrochemical tracers in the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, USA: 1. Conceptualization of groundwater flow</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Plummer, L. Niel; Bexfield, Laura M.; Anderholm, Scott K.; Sanford, Ward E.; Busenberg, Eurybiades</p> <p></p> <p>Chemical and isotopic data for groundwater from throughout the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, central New Mexico, USA, were used to identify and map groundwater flow from 12 sources of water to the basin, evaluate radiocarbon ages, and refine the conceptual model of the Santa Fe Group aquifer system. Hydrochemical zones, representing groundwater flow over thousands to tens of thousands of years, can be traced over large distances through the primarily siliciclastic aquifer system. The locations of the hydrochemical zones mostly reflect the ``modern'' predevelopment hydraulic-head distribution, but are inconsistent with a trough in predevelopment water levels in the west-central part of the basin, indicating that this trough is a transient rather than a long-term feature of the aquifer system. Radiocarbon ages adjusted for geochemical reactions, mixing, and evapotranspiration/dilution processes in the aquifer system were nearly identical to the unadjusted radiocarbon ages, and ranged from modern to more than 30 ka. Age gradients from piezometer nests ranged from 0.1 to 2 year cm-1 and indicate a recharge rate of about 3 cm year-1 for recharge along the eastern mountain front and infiltration from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> near Albuquerque. There has been appreciably less recharge along the eastern mountain front north and south of Albuquerque. Des données sur les éléments chimiques et les isotopes présents dans l'eau souterraine prélevée à divers endroits dans le bassin moyen du <span class="hlt">Rio</span> <span class="hlt">Grande</span>, au centre du Nouveau-Mexique (É-U), ont permis de déterminer l'existence et l'étendue de douze sources d'eau régionales dans le bassin, d'évaluer les âges radiocarbones et de raffiner le modèle conceptuel du système aquifère du groupe de Santa Fe. Des zones hydro-chimiques qui représentent l'écoulement de l'eau souterraine depuis des dizaines de milliers d'années peuvent être suivies sur de longues distances à travers l'aquifère principalement siliclastique. La position des</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_16 --> <div id="page_17" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="321"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/tem/0943/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/tem/0943/report.pdf"><span>Reconnaissance for uranium in the coal of Sao Paulo, Santa Catarina, and <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Haynes, Donald D.; Pierson, Charles T.; White, Max G.</p> <p>1958-01-01</p> <p>Uranium-bearing coal and carbonaceous shale of the <span class="hlt">Rio</span> Bonito formation of Pennsylvanian age have been found in the States of Sao Paulo, Santa Catarlna and <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil. The uranium oxide content of the samples collected in the State of Sao Paulo ranges from 0.001 percent to 0.082 percent. The samples collected in Santa Catarina averaged about 0.002 percent uranium oxide; those collected in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, about 0.003 percent uranium oxide. Since the field and laboratory investigations are still in their initial stages, only raw data on the radioactivity and uranium content of Brazilian coals are given in this report.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20150019462','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20150019462"><span>Mantle Water Contents Beneath the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (NM, USA): FTIR Analysis of <span class="hlt">Rio</span> Puerco and Kilbourne Hole Peridotite Xenoliths</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Schaffer, L. A.; Peslier, A. H.; Brandon, A.; Selverstone, J.</p> <p>2015-01-01</p> <p>Peridotite xenoliths from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR) are being analyzed for H (sub 2) O contents by FTIR (Fourier Transform Infrared) as well as for major and trace element compositions. Nine samples are from the <span class="hlt">Rio</span> Puerco Volcanic Field (RP) which overlaps the central RGR and southeastern Colorado Plateau; seventeen samples are from Kilbourne Hole (KH) in the southern RGR. Spinel Cr# (Cr/(Cr+Al)) (0.08-0.46) and olivine Mg# (Mg/(Mg plus Fe)) (0.883-0.911) of all RGR samples fall within the olivine-spinel mantle array from [1], an indicator that peridotites are residues of partial melting. Pyroxene H (sub 2) O in KH correlate with bulk rock and pyroxene Al (sub 2) O (sub 3).The KH clinopyroxene rare earth element (REE) variations fit models of 0-13 percent fractional melting of a primitive upper mantle. Most KH peridotites have bulk-rock light REE depleted patterns, but five are enriched in light REEs consistent with metasomatism. Variation in H (sub 2) O content is unrelated to REE enrichment. Metasomatism is seen in RP pyroxenite xenoliths [2] and will be examined in the peridotites studied here. Olivine H (sub 2) O contents are low (less than or equal to 15 parts per million), and decrease from core to rim within grains. This is likely due to H loss during xenolith transport by the host magma [3]. Diffusion models of H suggest that mantle H (sub 2) O contents are still preserved in cores of KH olivine, but not RP olivine. The average H (sub 2) O content of Colorado Plateau clinopyroxene (670 parts per million) [4] is approximately 300 parts per million higher than RGR clinopyroxene (350 parts per million). This upholds the hypothesis that hydration-induced lithospheric melting occurred during flat-slab subduction of the Farallon plate [5]. Numerical models indicate hydration via slab fluids is possible beneath the plateau, approximately 600 kilometers from the paleo-trench, but less likely approximately 850 kilometers away beneath the rift [6].</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.V53F3166S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.V53F3166S"><span>Mantle water contents beneath the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (NM, USA): FTIR analysis of <span class="hlt">Rio</span> Puerco and Kilbourne Hole peridotite xenoliths</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Schaffer, L. A.; Peslier, A. H.; Brandon, A. D.; Selverstone, J.</p> <p>2015-12-01</p> <p>Peridotite xenoliths from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR) are being analyzed for H2O contents by FTIR as well as for major and trace element compositions. Nine samples are from the <span class="hlt">Rio</span> Puerco Volcanic Field (RP) which overlaps the central RGR and southeastern Colorado Plateau; seventeen samples are from Kilbourne Hole (KH) in the southern RGR. Spinel Cr# (Cr/(Cr+Al) = 0.08-0.46) and olivine Mg# (Mg/(Mg+Fe) = 0.883-0.911) of samples fall within the olivine-spinel mantle array from [1], an indicator that these are residues of partial melting. Pyroxene H2O contents in KH correlate with bulk rock and pyroxene Al2O3 contents. The KH clinopyroxene rare earth element (REE) variations fit models of 0-13% fractional melting of a primitive upper mantle. Most KH peridotites have bulk-rock light REE depleted patterns, but five are enriched in light REEs consistent with metasomatism. Variation in H2O content seems unrelated to REE enrichment. Metasomatism is seen in RP pyroxenite xenoliths [2] and will be examined in the peridotites studied here. Olivine H2O contents are low (≤20 ppm), and decrease from core to rim within grains. This is likely due to H loss during xenolith transport by the host magma [3]. Diffusion models of H suggest that mantle H2O contents are still preserved in cores of KH olivine, but not those of RP olivine. The average H2O content of Colorado Plateau clinopyroxene (670 ppm) [4] is ~300 ppm higher than RGR clinopyroxene (350 ppm). This upholds the hypothesis that hydration-induced lithospheric melting occurred during flat-slab subduction of the Farallon plate [5]. Numerical models indicate hydration via slab fluids is possible beneath the plateau, ~600 km from the paleo-trench, but less likely ~850 km away beneath the rift [6]. [1]Arai, 1994 CG 113, 191-204.[2]Porreca et al., 2006 Geosp 2, 333-351.[3]Peslier and Luhr, 2006 EPSL 242, 302-319.[4]Li et al., 2008 JGR 113, 1978-2012.[5]Humphreys et al., 2003 Int Geol Rev 45, 575-595.[6]English et al., 2003 EPSL</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28225910','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28225910"><span>Products purchased from family farming for school meals in the cities of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ferigollo, Daniele; Kirsten, Vanessa Ramos; Heckler, Dienifer; Figueredo, Oscar Agustín Torres; Perez-Cassarino, Julian; Triches, Rozane Márcia</p> <p>2017-02-16</p> <p>This study aims to verify the adequacy profile of the cities of the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, in relation to the purchase of products of family farming by the Programa Nacional de Alimentação Escolar (PNAE - National Program of School Meals). This is a quantitative descriptive study, with secondary data analysis (public calls-to-bid). The sample consisted of approximately 10% (n = 52) of the cities in the State, establishing a representation by mesoregion and size of the population. We have assessed the percentage of food purchased from family farming, as well as the type of product, requirements of frequency, delivery points, and presence of prices in 114 notices of public calls-to-bid, in 2013. Of the cities analyzed, 71.2% (n = 37) reached 30% of food purchased from family farming. Most public calls-to-bid demanded both products of plant (90.4%; n = 103) and animal origin (79.8%; n = 91). Regarding the degree of processing, fresh products appeared in 92.1% (n = 105) of the public calls-to-bid. In relation to the delivery of products, centralized (49.1%; n = 56) and weekly deliveries (47.4%; n = 54) were the most described. Only 60% (n = 68) of the public calls-to-bid contained the price of products. Most of the cities analyzed have fulfilled what is determined by the legislation of the PNAE. We have found in the public calls-to-bid a wide variety of food, both of plant and animal origin, and most of it is fresh. In relation to the delivery of the products, the centralized and weekly options prevailed. Verificar o perfil de adequação dos municípios do <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul no que tange à aquisição de produtos da agricultura familiar pelo Programa Nacional de Alimentação Escolar. Trata-se de estudo quantitativo descritivo, com análise de dados secundá<span class="hlt">rios</span> (chamadas públicas). A amostra foi composta por aproximadamente 10% (n = 52) dos municípios do estado, tomando-se o cuidado de estabelecer uma representatividade por mesorregião e tamanho da</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/16764476','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/16764476"><span>Biomarkers of exposure and effects of environmental contaminants on swallows nesting along the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Texas, USA.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mora, Miguel A; Musquiz, Daniel; Bickham, John W; Mackenzie, Duncan S; Hooper, Michael J; Szabo, Judit K; Matson, Cole W</p> <p>2006-06-01</p> <p>We collected adult cave swallows (Petrochelidon fulva) and cliff swallows (P. pyrrhonota) during the breeding seasons in 1999 and 2000 from eight locations along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Brownsville to El Paso (unless otherwise specified, all locations are Texas, USA) and an out-of-basin reference location. Body mass, spleen mass, hepatosomatic index (HSI), gonadosomatic index (GSI), thyroxine (T4) in plasma, DNA damage measured as the half-peak coefficient of variation of DNA content (HPCV) in blood cells, as well as acetylcholinesterase and butyrylcholinesterase in brain were compared with concentrations of organochlorines, metals, and metalloids in carcasses to determine potential effects of contaminants on swallows during the breeding season. Concentrations of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) were significantly greater in swallows from El Paso than in those from most locations, except for Pharr and Llano <span class="hlt">Grande</span>. All swallows from these three locations had p,p'-DDE concentrations of 3 microg/g wet weight or greater. Swallows from El Paso either had or shared the highest concentrations of p,p'-DDE, polychlorinated biphenyls, and 13 inorganic elements. Swallows from El Paso exhibited greater spleen mass and HPCV values as well as lower T4 values compared with those from other locations. Thyroxine was a potential biomarker of contaminant exposure in swallows of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, because it was negatively correlated with p,p'-DDE and Se. Spleen mass was positively correlated with selenium and HSI and negatively correlated with body mass, GSI, Mn, and Ni. Overall, the present study suggests that insectivorous birds living in areas of high agricultural and industrial activity along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> bioaccumulate environmental contaminants. These contaminants, particularly p,p'-DDE, may be among multiple factors that impact endocrine and hematopoietic function in <span class="hlt">Rio</span> <span class="hlt">Grande</span> swallows.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70028347','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70028347"><span>Biomarkers of exposure and effects of environmental contaminants on swallows nesting along the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Texas, USA</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Mora, M.A.; Musquiz, D.; Bickham, J.W.; MacKenzie, D.S.; Hooper, M.J.; Szabo, J.K.; Matson, C.W.</p> <p>2006-01-01</p> <p>We collected adult cave swallows (Petrochelidon fulva) and cliff swallows (P. pyrrhonota) during the breeding seasons in 1999 and 2000 from eight locations along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Brownsville to El Paso (unless otherwise specified, all locations are Texas, USA) and an out-of-basin reference location. Body mass, spleen mass, hepatosomatic index (HSI), gonadosomatic index (GSI), thyroxine (T4) in plasma, DNA damage measured as the half-peak coefficient of variation of DNA content (HPCV) in blood cells, as well as acetylcholinesterase and butyrylcholinesterase in brain were compared with concentrations of organochlorines, metals, and metalloids in carcasses to determine potential effects of contaminants on swallows during the breeding season. Concentrations of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p???-DDE) were significantly greater in swallows from El Paso than in those from most locations, except for Pharr and Llano <span class="hlt">Grande</span>. All swallows from these three locations had p,p???-DDE concentrations of 3 ??g/g wet weight or greater. Swallows from El Paso either had or shared the highest concentrations of p,p???-DDE, polychlorinated biphenyls, and 13 inorganic elements. Swallows from El Paso exhibited greater spleen mass and HPCV values as well as lower T4 values compared with those from other locations. Thyroxine was a potential biomarker of contaminant exposure in swallows of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, because it was negatively correlated with p,p???-DDE and Se. Spleen mass was positively correlated with selenium and HSI and negatively correlated with body mass, GSI, Mn, and Ni. Overall, the present study suggests that insectivorous birds living in areas of high agricultural and industrial activity along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> bioaccumulate environmental contaminants. These contaminants, particularly p,p???-DDE, may be among multiple factors that impact endocrine and hematopoietic function in <span class="hlt">Rio</span> <span class="hlt">Grande</span> swallows. ?? 2006 SETAC.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70036689','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70036689"><span>Species richness, relative abundance, and habitat associations of nocturnal birds along the <span class="hlt">rio</span> <span class="hlt">grande</span> in Southern texas</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Skoruppa, M.K.; Woodin, M.C.; Blacklock, G.</p> <p>2009-01-01</p> <p>The segment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> between International Falcon Reservoir and Del <span class="hlt">Rio</span>, Texas (distance ca. 350 km), remains largely unexplored ornithologically. We surveyed nocturnal birds monthly during February-June 1998 at 19 stations along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> (n = 6) and at upland stock ponds (n = 13) in Webb County, Texas. We conducted 10-min point counts (n = 89) after sunset and before moonset. Four species of owls and five species of nightjars were detected. Nightjars, as a group, were nearly five limes more abundant (mean number/count = 2.63) than owls (mean number = 0.55). The most, common owl, the great horned owl (Bubo virginianus), had a mean number of 0.25/point count. The mean for elf owls (Micrathene whitneyi) was 0.16/point count. The most common nightjars were the common poorwill (Phalaenoptilus nuttallii; 1.21/point count) and lesser nighthawk (Chordeiles acutipennir, 1.16/point count). Survey sites on the river supported more species (mean = 2.2) than did upland stock ponds (mean = 1.4). However, only one species (common pauraque, Nyctidromus albicollis) showed a preference for the river sites. Our results establish this segment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in southern Texas as an area of high diversity of nightjars in the United States, matched (in numbers of species) only by southeastern Arizona and southwestern New Mexico.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19970022124&hterms=English+Mexico&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DEnglish%2BMexico','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19970022124&hterms=English+Mexico&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DEnglish%2BMexico"><span>Paleomagnetism and Tectonic Interpretations of the Taos Plateau Volcanic Field, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brown, Laurie L.; Caffall, Nancy M.; Golombek, Matthew P.</p> <p>1993-01-01</p> <p>The tectonic response of the Taos Plateau volcanic field in the southern San Luis basin to the late stage extensional environment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift was investigated using paleomagnetic techniques. Sixty-two sites (533 samples) of Pliocene volcanic units were collected covering four major rock types with ages of 4.7 to 1.8 Ma. Twenty-two of these sites were from stratigraphic sections of the lower, middle and upper Servilleta Basalt collected in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge at two locations 19 km apart. Flows from the lower and middle members in the southern gorge record reversed polarities, while those in Garapata Canyon are normal with an excursion event in the middle of the sequence. The uppermost flows of the upper member at both sites display normal directions. Although these sections correlate chemically, they seem to represent different magnetic time periods during the Gilbert Reversed-Polarity Chiron. Alternating field demagnetization, aided by principal component analysis, yields 55 sites with stable directions representing both normal and reversed polarities, and five sites indicating transitional fields. Mean direction of the normal and inverted reversed sites is I=49.3 deg. and D=356.7 deg. (alpha(sub 95)=3.6 deg). Angular dispersion of the virtual geomagnetic poles is 16.3 deg, which is consistent with paleosecular variation model G, fit to data from the past 5 m.y. Comparison with the expected direction indicates no azimuthal rotation of the Taos Plateau volcanic field; inclination flattening for the southern part of the plateau is 8.3 deg +/- 5.3 deg. Previous paleomagnelic data indicate 10 deg- 15 deg counterclockwise rotation of die Espanola block to the south over the past 5 m.y. The data suggest the Taos Plateau volcanic field, showing no rotation and some flattening in the south and east, has acted as a stable buttress and has been downwarped by overriding of the southeastern end of the plateau by the Picuris Mountains, which make up the northern</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012AGUFM.G23B0924C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012AGUFM.G23B0924C"><span>Horizontal and Vertical Velocities across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift and Southern Rocky Mountains</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Choe, C.; Nerem, R.; Sheehan, A. F.; Blewitt, G.; Murray, M. H.</p> <p>2012-12-01</p> <p>We analyze over 5 years of continuous GPS measurements from 26 GPS sites across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR) and Southern Rocky Mountains in New Mexico and Colorado. Over 40 Plate Boundary Observatory (PBO) GPS sites in adjoining eastern Colorado Plateau and western Great Plains are also included in the analysis. Surface velocities for the GPS sites are computed by JPL's GIPSY/OASIS II software in the NA12 reference frame - a 300-station IGS08 North America-fixed reference frame developed by the University of Nevada (Blewitt et al., 2012 Fall AGU abstract). The horizontal velocities over the RGR generally agree with previous analysis performed by Berglund et al. (2012) using MIT's GAMIT software although the latter results are represented in an IGS05 North America-fixed reference frame. The GPS time series are also examined to assess RGR site vertical displacement rates. An attempt is made to estimate the surface loading correction due to hydrology from Gravity Recovery and Climate Experiment (GRACE) measurements by fitting a linear trend simultaneously with the annual and semiannual terms over the same time period as the GPS measurements. This correction is applied to the GPS vertical displacement time series to better model seasonal vertical displacement and to reduce the uncertainty in the estimation of vertical velocity. A post-glacial rebound model developed by Paulson et al. (2007) is taken into account for both GPS vertical time series and GRACE gravity time series. The resultant vertical displacement rate shows predominantly negative rates over the northern RGR and much smaller yet positive rates over the southern RGR. The comparison of PBO vertical displacement rates over the RGR to those provided by UNAVCO's PBO Analysis Centers shows a similar pattern. Paulson, A., S. Zhong, and J. Wahr (2007), Inference of mantle viscosity from GRACE and relative sea level data, Geophys. J. Int., 171, 497-508, doi: 10.1111/j.1365-246X.2007.03556.x Berglund, H. T., A. F</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2006AGUFM.H34B..05B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2006AGUFM.H34B..05B"><span>An Integrated Model for a Water Leasing System on the Middle <span class="hlt">Rio</span> <span class="hlt">Grand</span>, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Brookshire, D. S.; Coursey, D. L.; Tidwell, V. C.; Broadbent, C. D.</p> <p>2006-12-01</p> <p>Since 1950 demand for water has more than doubled in the United States. Virtually all water supplies are allocated, leading to the question, where will water come from? The concept of water leasing has gained considerable attention as a volunteer, market-mediated system for transferring water between competing uses. For a water leasing system to be truly effective, detailed knowledge of the available water supply and the factors that affect water demand is critical. Improving understating of the factors that determine residential, industrial, and agricultural demand for water using experimental economics and then integrating with a hydrological model will allow for better understanding of market-based mechanisms potential to allocate water resources effectively. Currently we have three case studies underway, a generalized water leasing system on the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, a sophisticated farmer decision process and a study in the Mimbres basin in southern New Mexico. The developed market model utilizes an open market trading system known as a double auction, where buyers and sellers declare their bids and offers to the market. The developed hydrological model utilizes the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Water Operations Model (URGWOM) system structure and data for the generalized water leasing system and the farmer decision process, with a different hydrological model being developed for the Mimbres basin. A key coupling between the hydrologic and market models involves tracking the difference in river losses for trades that move water up or down the river. In the experiments the hydrological model runs before the market-trading period to establish water rights, the trading period occurs and the hydrological model then runs a second time to report flows to each reach of the river. Participants in the experiment represent the interests of specific users, including farmers, Native American interests, urban interests and environmental interests. Participants in the experiments are</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19970022124&hterms=tectonic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dtectonic','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19970022124&hterms=tectonic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dtectonic"><span>Paleomagnetism and Tectonic Interpretations of the Taos Plateau Volcanic Field, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brown, Laurie L.; Caffall, Nancy M.; Golombek, Matthew P.</p> <p>1993-01-01</p> <p>The tectonic response of the Taos Plateau volcanic field in the southern San Luis basin to the late stage extensional environment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift was investigated using paleomagnetic techniques. Sixty-two sites (533 samples) of Pliocene volcanic units were collected covering four major rock types with ages of 4.7 to 1.8 Ma. Twenty-two of these sites were from stratigraphic sections of the lower, middle and upper Servilleta Basalt collected in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge at two locations 19 km apart. Flows from the lower and middle members in the southern gorge record reversed polarities, while those in Garapata Canyon are normal with an excursion event in the middle of the sequence. The uppermost flows of the upper member at both sites display normal directions. Although these sections correlate chemically, they seem to represent different magnetic time periods during the Gilbert Reversed-Polarity Chiron. Alternating field demagnetization, aided by principal component analysis, yields 55 sites with stable directions representing both normal and reversed polarities, and five sites indicating transitional fields. Mean direction of the normal and inverted reversed sites is I=49.3 deg. and D=356.7 deg. (alpha(sub 95)=3.6 deg). Angular dispersion of the virtual geomagnetic poles is 16.3 deg, which is consistent with paleosecular variation model G, fit to data from the past 5 m.y. Comparison with the expected direction indicates no azimuthal rotation of the Taos Plateau volcanic field; inclination flattening for the southern part of the plateau is 8.3 deg +/- 5.3 deg. Previous paleomagnelic data indicate 10 deg- 15 deg counterclockwise rotation of die Espanola block to the south over the past 5 m.y. The data suggest the Taos Plateau volcanic field, showing no rotation and some flattening in the south and east, has acted as a stable buttress and has been downwarped by overriding of the southeastern end of the plateau by the Picuris Mountains, which make up the northern</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2001AGUFM.V51C1031K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2001AGUFM.V51C1031K"><span>Mantle Evolution Associated With the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift: Geochemistry of Upper Mantle Xenoliths</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kil, Y.; Wendlandt, R. F.</p> <p>2001-12-01</p> <p>Upper mantle xenoliths from three locales associated with the southern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift have been investigated to determine lithosphere composition, chemical processes, and pre-eruptive pressure and temperature conditions. Sample locations, Potrillo and Elephant Butte within the rift axis and Adam's Diggings, located 50 km west of the rift axis, were specifically selected to evaluate spatial differences in mantle evolution. Xenolith suites from all locations included spinel lherzolites, harzburgites, and pyroxenites hosted in basanite and alkali basalt. Thin section, electron microprobe, and LA-ICPMS analyses were used to obtain detailed textural information, mineral compositions, and whole rock geochemistry. Xenoliths are classified as protogranular, porphyroclastic, or equigranular texture types. Equigranular texture types occur in the off-axis site. Recrystallized olivine grains are larger in xenoliths from sites along the rift axis than from the rift shoulder. Geothermal gradients based on mineral compositions, utilizing two-pyroxene and olivine-spinel geothermometers and the Ca-in olivine geothermobarometer, indicate temperatures off the rift axis at Adam's Diggings that are 75o-100oC cooler for a given pressure than under the rift axis. Whole rock chemical data and mineral modes support an early depletion event affecting xenoliths from all locations: Al2O3, CaO, Na2O, TiO2, V, Sc, Yb, and clinopyroxene content decrease with increasing MgO. The average (La/Yb)n of clinopyroxenes are 12.37, 0.95, and 1.14 for Adam's Diggings, Elephant Butte, and Potrillo xenoliths, respectively. This LREE enrichment and the occurrence of phlogopite that is interpreted to be primary in xenoliths from the off-axis site indicate both cryptic and modal metasomatic events. Both LREE-enriched and -depleted lherzolites are present at rift axis sites. Differences in recrystallized olivine size, xenolith textures, composition, and pre-eruptive pressure-temperature conditions between rift</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1435849','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1435849"><span>Health information Hispanic outreach in the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley*</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Bowden, Virginia M.; Wood, Frederick B.; Warner, Debra G.; Olney, Cynthia A.; Olivier, Evelyn R.; Siegel, Elliot R.</p> <p>2006-01-01</p> <p>Purpose: This paper provides an overview of the two-year Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley Health Information Hispanic Outreach (HI HO) project. The project included a needs assessment, four pilot projects, and focus groups on the use of MedlinePlus and MedlinePlus en español. The needs assessment included a survey of physicians' information usage and a review of the circuit librarian program that had been established in 1989. The pilot projects were located at a high school, a rural health clinic, an urban health clinic, and a community center. Diffusion of innovation theory provided a framework for interpreting the results of the pilot projects. Methods: The survey of physicians' information usage partially replicated a similar 1990 survey. The review of the circuit librarian program included usage statistics, interviews of administrators, and a survey of participants. Pilot project methodology varied by site. At the high school, four students were trained to instruct their peers in the use of MedlinePlus. At the two clinics, a computer workstation was installed for patients to access MedlinePlus. At the community center, staff were trained to use MedlinePlus en español to train community residents. Project evaluation included surveys, focus groups, and interviews. Indicators of success included increased level of consumer use of MedlinePlus, reports by key informants and consumers of how MedlinePlus was used, reports about training, and development of self-sustaining activity. Results: The physician survey documented usage of health information resources in 2002 compared to 1990. The review of the circuit librarian program documented the change in program usage between 1989 and 2003. The pilot project at the high school was the most successful of the four pilot projects in introducing MedlinePlus to a large number of people, followed by the community center project. In the high school and community center projects, the participating institutions had reinforcing</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/16636711','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/16636711"><span>Health information Hispanic outreach in the Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bowden, Virginia M; Wood, Frederick B; Warner, Debra G; Olney, Cynthia A; Olivier, Evelyn R; Siegel, Elliot R</p> <p>2006-04-01</p> <p>This paper provides an overview of the two-year Texas Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley Health Information Hispanic Outreach (HI HO) project. The project included a needs assessment, four pilot projects, and focus groups on the use of MedlinePlus and MedlinePlus en español. The needs assessment included a survey of physicians' information usage and a review of the circuit librarian program that had been established in 1989. The pilot projects were located at a high school, a rural health clinic, an urban health clinic, and a community center. Diffusion of innovation theory provided a framework for interpreting the results of the pilot projects. The survey of physicians' information usage partially replicated a similar 1990 survey. The review of the circuit librarian program included usage statistics, interviews of administrators, and a survey of participants. Pilot project methodology varied by site. At the high school, four students were trained to instruct their peers in the use of MedlinePlus. At the two clinics, a computer workstation was installed for patients to access MedlinePlus. At the community center, staff were trained to use MedlinePlus en español to train community residents. Project evaluation included surveys, focus groups, and interviews. Indicators of success included increased level of consumer use of MedlinePlus, reports by key informants and consumers of how MedlinePlus was used, reports about training, and development of self-sustaining activity. The physician survey documented usage of health information resources in 2002 compared to 1990. The review of the circuit librarian program documented the change in program usage between 1989 and 2003. The pilot project at the high school was the most successful of the four pilot projects in introducing MedlinePlus to a large number of people, followed by the community center project. In the high school and community center projects, the participating institutions had reinforcing educational missions and paid</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/19768280','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/19768280"><span>[Culicidae (Diptera) in the dam area bordering the states of Santa Catarina and <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gomes, Almério C; Paula, Marcia B; Vitor Neto, João B; Borsari, Rodrigo; Ferraudo, Antonio S</p> <p>2009-01-01</p> <p>The Culicidae composition of the Barra <span class="hlt">Grande</span> Lake situated between the municipalities of Esmeralda (<span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State) and Anita Garibaldi (Santa Catarina State) was assessed by monthly samplings. Twenty-four species were identified from a total of 1,185 specimens (74.7% as adults and 25.3% as immatures), with Aedes fluviatilis Lutz as the most frequent species. Several species are new records, and some of them are of public health interest. It is suggested that local environmental changes may alter the relationship between humans and vector mosquitoes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/20006517','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/20006517"><span>Characterization and dynamics of air pollutants in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mejia-Velazquez, G.M.; Sheya, S.A.; Dworzanski, J.; Rodriguez-Gallegos, M.; Tejeda-Honstein, D.D.; Cardona-Carrizalez, J.M.; Meuzelaar, H.L.C.</p> <p>1999-07-01</p> <p>The Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (LRGV) has become a region of increasing interest because of its rapid economic development and the increased international border crossing traffic, as well as for its extensive agricultural activities. Over the past few years air pollution problems in the region have been reported by the population. However, very few air quality studies have been performed in the area. In this paper some results of a study to demonstrate the feasibility of a comprehensive (criteria pollutant + VOC/SVOC + PM{sub FINE}) air pollutant dynamics characterization and modeling study in the LRGV are presented and discussed. The study involved both sides of the US/Mexican border and used. A highly mobile monitoring station equipped with a broad array of physical and chemical samplers and sensors was used in the study in two periods in December, 1995 and March,1998. PM10/PM2.5 and NO{sub x} (the latter only in the March 1998 study) concentrations were measured in Reynosa, <span class="hlt">Rio</span> Bravo and Matamoros, Mexico, as well as Hidalgo, Brownsville and along the Freeway between Brownsville and McAllen on Texas. The photochemical model predicted peak ozone concentrations that reached, and on some days exceeded, air quality standards. The concurrent PM10/PM2.5 study involved both physical (size distributed counting) and time-resolved (2-hourly) organic chemical (VOC/SVOC type PM{sub FINE} adsorbates) characterization methods. Recently completed multivariate data analysis results from a December 1995 study at one of the sites (Hidalgo international bridge) are being presented to illustrate the capabilities of the time-resolved PM{sub FINE} characterization approach. The results of this work show that the LRGV region does not appear to have grave air pollution problems yet. However, with the increase in traffic activities over the next few years, air quality is likely to deteriorate.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/920129','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/920129"><span>Data collection for cooperative water resources modeling in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, Fort Quitman to the Gulf of Mexico.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Passell, Howard David; Pallachula, Kiran; Tidwell, Vincent Carroll; Villalobos, Joshua; Piccinni, Giovanni; Brainard, James Robert; Gerik, Thomas; Morrison, Wendy; Serrat-Capdevila, Aleix; Valdes, Juan; Sheng, Zhuping; Lovato, Rene; Guitron, Alberto; Ennis, Martha Lee; Aparicio, Javier; Newman, Gretchen Carr; Michelsen, Ari M.</p> <p>2004-10-01</p> <p>Water resource scarcity around the world is driving the need for the development of simulation models that can assist in water resources management. Transboundary water resources are receiving special attention because of the potential for conflict over scarce shared water resources. The <span class="hlt">Rio</span> <span class="hlt">Grande/Rio</span> Bravo along the U.S./Mexican border is an example of a scarce, transboundary water resource over which conflict has already begun. The data collection and modeling effort described in this report aims at developing methods for international collaboration, data collection, data integration and modeling for simulating geographically large and diverse international watersheds, with a special focus on the <span class="hlt">Rio</span> <span class="hlt">Grande/Rio</span> Bravo. This report describes the basin, and the data collected. This data collection effort was spatially aggregated across five reaches consisting of Fort Quitman to Presidio, the <span class="hlt">Rio</span> Conchos, Presidio to Amistad Dam, Amistad Dam to Falcon Dam, and Falcon Dam to the Gulf of Mexico. This report represents a nine-month effort made in FY04, during which time the model was not completed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/15919543','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/15919543"><span>Nutrient and organic carbon trends and patterns in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span>, 1975-1999.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Passell, Howard D; Dahm, Clifford N; Bedrick, Edward J</p> <p>2005-06-01</p> <p>Nutrient patterns and trends were analyzed using USGS water quality data collected from 1975 to 1999 along the uppermost 600 km of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Colorado and New Mexico. Data on discharge, pH, organic carbon (total), N-NH(4+)+organic N (total), NH4+ (dissolved), N-NO(2-)+N-NO3- (dissolved), phosphorus (total), and P-orthophosphate (dissolved) came from six USGS stations--Lobatos, Taos Junction, Otowi, San Felipe, Isleta and Bernardo--ranging from the Colorado-New Mexico border to about 80 km below Albuquerque, NM. Kendall's S and Seasonal Kendall's S' were used to measure trend, and ANOVA and Tukey's multiple comparison test were used to analyze spatial differences between stations. Temporal trend analyses show widespread decreases in N and P concentrations at most stations, likely due to improvements in sewage treatment and dilution from increasing discharge. N-NO(2-)+N-NO3- (dissolved) and total nitrate load increases at Isleta and Bernardo, likely due to improved nitrification in sewage treatment and to increasing human population. Spatial analyses show large increases for most parameters at Isleta. All parameters show decreases again at Bernardo, about 50 km downstream from Isleta, except for N-NO(2-)+N-NO3- (dissolved), which continues to increase. Urbanization in the Albuquerque area significantly impacts downstream river nutrient levels.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.C13A0797S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.C13A0797S"><span>Dust-on-snow and the Timing of Peak Streamflow in the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Steele, C. M.; Elias, E.; Moffitt, A.; Beltran, I.; Rango, A.</p> <p>2015-12-01</p> <p>Dust radiative forcing on high elevation snowpack is well-documented in the southern Rockies. Various field studies show that dust deposits decrease snow albedo and increase absorption of solar radiation, leading to earlier snowmelt and peak stream flows. These findings have implications for the use of temperature-index snow runoff models (such as the Snowmelt Runoff Model [SRM]) for predicting streamflow. In previous work, we have used SRM to simulate historical streamflow from 26 Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> sub-basins. Because dust radiative forcing can alter the relation between temperature and snowmelt, we wanted to find out if there is evidence of dust radiative forcing and earlier snowmelt in our study basins, particularly for those years where SRM was less successful in simulating streamflow. To accomplish this we have used openly-available data such as EPA air quality station measurements of particulate matter up to 10 micrometers (PM10); streamflow data from the USGS National Water Information System and Colorado Division of Water Resources; temperature, precipitation and snow water equivalent (SWE) from NRCS SNOTEL stations and remotely sensed data products from the MODIS sensor. Initial analyses indicate that a connection between seasonal dust concentration and streamflow timing (date of onset of warm-season snowmelt, date of streamflow center-of-volume) can be detected. This is further supported by time series analysis of MODIS-derived estimates of snow albedo and dust radiative-forcing in alpine and open subalpine snow fields.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20170008495&hterms=Climate&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DClimate','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20170008495&hterms=Climate&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DClimate"><span>Covariability of Climate and Streamflow in the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Interannual to Interdecadal Timescales</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Pascolini-Campbell, M.; Seager, Richard; Pinson, Ariane; Cook, Benjamin I.</p> <p>2017-01-01</p> <p>Study region: The Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> (URG) flows from its headwaters in Colorado, U.S., and provides an important source of water to millions of people in the U.S. states of Colorado, New Mexico, Texas, and also Mexico. Study focus: We reassess the explanatory power of the relationship of sea surface temperatures (SST) on URG streamflow variability on interannual to interdecadal timescales. We find a significant amount of the variance of spring-summer URG streamflow cannot be fully explained by SST. New hydrological insights: We find that the interdecadal teleconnection between SST and streamflow is more clear than on interannual timescales. The highest ranked years tend to be clustered during positive phases of the Pacific Decadal Oscillation (PDO). During the periods of decadal high flow (1900-1920, and 1979-1995), Pacific SST resembles a positive PDO pattern and the Atlantic a negative Atlantic Multidecadal Oscillation (AMO) pattern; an interbasin pattern shown in prior studies to be conducive to high precipitation and streamflow. To account for the part of streamflow variance not explained by SST, we analyze atmospheric Reanalysis data for the months preceding the highest spring-summer streamflow events. A variety of atmospheric configurations are found to precede the highest flow years through anomalous moisture convergence. This lack of consistency suggests that, on interannual timescales, weather and not climate can dominate the generation of high streamflow events.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_17 --> <div id="page_18" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="341"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.jstor.org/stable/3809382','USGSPUBS'); return false;" href="http://www.jstor.org/stable/3809382"><span>Anticholinesterase exposure of white-winged doves breeding in lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley, Texas</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Tacha, T.C.; Schacht, S.J.; George, R.R.; Hill, E.F.</p> <p>1994-01-01</p> <p>We studied exposure of breeding white-winged doves (Zenaida asiatica) to anticholinesterase compounds (organophosphorus and carbamate pesticides) in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (LRGV), Texas. Widespread use of organophosphorus pesticides and dove population declines prompted the study. We collected breeding adult doves in May and July 1991 (n = 28) and July 1992 (n = 33) at 6 locations. We used depression of whole-brain cholinesterase (ChE) activity (2 SD below control mean) to detect exposure; values from 4 hand-reared doves fed commercial pigeon chow served as the control. Mean brain ChE activity was lower (P lt 0.027) than the control sample at all 6 locations in 1991; 79% of the birds were diagnostic of exposure ( gt 16.1% ChE depression). Pooled 1992 field samples also were lower (P lt 0.036) than were control samples; doves from 4 of the 6 locations had brain ChE activity below (P lt 0.088) controls. Overall, 39% of 1992 doves were diagnostic of exposure to anticholinesterase compounds. Higher exposure rates in 1991 were probably due to increased use of organophosphorus pesticides. Research is needed documenting effects of sublethal exposure on white-winged dove productivity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012WRR....4812530K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012WRR....4812530K"><span>Synthesis of benthic flux components in the Patos Lagoon coastal zone, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>King, J. N.</p> <p>2012-12-01</p> <p>The primary objective of this work is to synthesize components of benthic flux in the Patos Lagoon coastal zone, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil. Specifically, the component of benthic discharge flux forced by the terrestrial hydraulic gradient is 0.8 m3 d-1; components of benthic discharge and recharge flux associated with the groundwater tidal prism are both 2.1 m3 d-1; components of benthic discharge and recharge flux forced by surface-gravity wave setup are both 6.3 m3 d-1; the component of benthic discharge flux that transports radium-228 is 350 m3 d-1; and components of benthic discharge and recharge flux forced by surface-gravity waves propagating over a porous medium are both 1400 m3 d-1. (All models are normalized per meter shoreline.) Benthic flux is a function of components forced by individual mechanisms and nonlinear interactions that exist between components. Constructive and destructive interference may enhance or diminish the contribution of benthic flux components. It may not be possible to model benthic flux by summing component magnitudes. Geochemical tracer techniques may not accurately model benthic discharge flux or submarine groundwater discharge (SGD). A conceptual model provides a framework on which to quantitatively characterize benthic discharge flux and SGD with a multifaceted approach.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AGUFM.T41E2973B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AGUFM.T41E2973B"><span>Gravity and Seismic Investigations of the Northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift and Valles Caldera Area, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Braile, L. W.; Carchedi, C. J. W.; Krueger, H. E.; Muscat, M.; Apango, F.; Phillips, L. J.; Rhoads, M.; Stayt, D.; Steele, T.; Steele, Z.; Ferguson, J. F.; McPhee, D.; Biehler, S.; Ralston, M. D.; Baldridge, W. S.</p> <p>2016-12-01</p> <p>Participants in the Summer of Applied Geophysical Experience (SAGE) program have studied the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift (RGR) area of New Mexico for the past thirty-four years. In recent years, the SAGE program has focused on the western edge of the Española basin and the transition into the Santo Domingo basin and the Valles caldera. During this time, we have collected about 45 km of seismic reflection and refraction data along approximately East-West profiles using a 120 channel data acquisition system with a 20 m station interval and a Vibroseis source. We also have access to several energy-industry seismic reflection record sections from the 1970s in the study area. During SAGE 2016, new gravity measurements in the Valles caldera and a seismic reflection profile has added new constraints to a west-to-east transect (Tesuque Profile) of the RGR and the Valles caldera. An integrated interpretation of the available seismic reflection data and gravity modeling along the Tesuque Profile resolve several fault-bounded structures including the Los Alamos graben and the Valles caldera filled with lower density rocks to depths of about 4 km. The new Valles caldera map and geophysical model are compared to older gravity maps and geologic information compiled on the recent geologic map of the Valles caldera.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28394587','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28394587"><span>Consumptive Water Use Analysis of Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin in Southern Colorado.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Dubinsky, Jonathan; Karunanithi, Arunprakash T</p> <p>2017-04-18</p> <p>Water resource management and governance at the river basin scale is critical for the sustainable development of rural agrarian regions in the West. This research applies a consumptive water use analysis, inspired by the Water Footprint methodology, to the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin (RGB) in south central Colorado. The region is characterized by water stress, high dessert conditions, declining land health, and a depleting water table. We utilize region specific data and models to analyze the consumptive water use of RGB. The study reveals that, on an average, RGB experiences three months of water shortage per year due to the unsustainable extraction of groundwater (GW). Our results show that agriculture accounts for 77% of overall water consumption and it relies heavily on an aquifer (about 50% of agricultural consumption) that is being depleted over time. We find that, even though potato cultivation provides the most efficient conversion of groundwater resources into economic value (m(3) GW/$) in this region, it relies predominantly (81%) on the aquifer for its water supply. However, cattle, another important agricultural commodity produced in the region, provides good economic value but also relies significantly less on the aquifer (30%) for water needs. The results from this paper are timely to the RGB community, which is currently in the process of developing strategies for sustainable water management.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://onlinelibrary.wiley.com/doi/10.1029/2011WR011477/abstract','USGSPUBS'); return false;" href="http://onlinelibrary.wiley.com/doi/10.1029/2011WR011477/abstract"><span>Synthesis of benthic flux components in the Patos Lagooncoastal zone, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>King, Jeffrey N.</p> <p>2012-01-01</p> <p>The primary objective of this work is to synthesize components of benthic flux in the Patos Lagoon coastal zone, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil. Specifically, the component of benthic discharge flux forced by the terrestrial hydraulic gradient is 0.8 m3 d-1; components of benthic discharge and recharge flux associated with the groundwater tidal prism are both 2.1 m3 d-1; components of benthic discharge and recharge flux forced by surface-gravity wave setup are both 6.3 m3 d-1; the component of benthic discharge flux that transports radium-228 is 350 m3 d-1; and components of benthic discharge and recharge flux forced by surface-gravity waves propagating over a porous medium are both 1400 m3 d-1. (All models are normalized per meter shoreline.) Benthic flux is a function of components forced by individual mechanisms and nonlinear interactions that exist between components. Constructive and destructive interference may enhance or diminish the contribution of benthic flux components. It may not be possible to model benthic flux by summing component magnitudes. Geochemical tracer techniques may not accurately model benthic discharge flux or submarine groundwater discharge (SGD). A conceptual model provides a framework on which to quantitatively characterize benthic discharge flux and SGD with a multifaceted approach.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2002AGUFM.H11F..10V','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2002AGUFM.H11F..10V"><span>Synoptic Sampling of Dissolved Nitrogen Species and Organic Carbon in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Villinski, J. E.; Hogan, J. F.; Brooks, P. D.; Haas, P. A.; Mills, S. K.</p> <p>2002-12-01</p> <p>Synoptic sampling has been performed along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from the headwaters in Colorado to Fort Quitman, Texas, south of El Paso. Samples from August 2001 and January 2002 were analyzed for nitrate (NO3-), ammonium (NH_{4}$+), total dissolved nitrogen (TDN), and dissolved organic carbon (DOC). DOC concentrations increase slowly between Colorado and southern New Mexico and then approximately double in Texas. Large sources of N during both sampling periods were the urban areas around Albuquerque and El Paso, Texas and Ciudad Juarez, Mexico, and agricultural regions in the Rincon and Mesilla valleys of southern New Mexico. Nitrate-N concentrations remained high south of Albuquerque to Elephant Butte reservoir in the summer, presumably due to lack of primary production. Inorganic N concentrations generally are higher in the winter than in the summer. During the summer, ammonium concentrations were greater than 100 mg N/l only at the outlet of Elephant Butte Reservoir, and in Texas. However, winter concentrations were on average an order of magnitude greater, again with the largest ammonium values (5000 \\mug N/l) in Texas. These patterns are consistent with a reduction in biological nutrient demand during the non-growing season.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28929534','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28929534"><span>Emerging arboviruses in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil: Chikungunya and Zika outbreaks, 2014-2016.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gregianini, Tatiana Schäffer; Ranieri, Tani; Favreto, Cátia; Nunes, Zenaida Marion Alves; Tumioto Giannini, Gabriela Luchiari; Sanberg, Nara Druck; da Rosa, Marilda Tereza Mar; da Veiga, Ana Beatriz Gorini</p> <p>2017-09-20</p> <p>The recent emergence of arboviruses such as Chikungunya virus (CHIKV) and Zika virus (ZIKV) in Brazil has posed a threat to human health and to the country's economy. Outbreaks occur mainly in tropical areas; however, increasing number of cases have been observed in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (RS), the Southernmost state; therefore, surveillance of these arboviruses is essential for public health measures. In this study, we analyzed 1276 samples from patients with clinically suspected arboviral diseases between 2014 and 2016. Demographic and clinical data were collected and described; cases of microcephaly associated with congenital infection were analyzed. Results show that CHIKV and ZIKV entered RS in 2014 and 2015, respectively, with imported cases confirmed. Autochthonous infections occurred in 2016 for both viruses, with a total of 5 autochthonous cases for CHIKV and 44 for ZIKV. Most patients were older than 21 years; the main symptoms were fever, arthralgia, myalgia, and headache; rash, conjunctivitis, and pruritus were also reported in ZIKV cases. Three cases of congenital Zika syndrome were confirmed in our study, while another 20 cases of microcephaly associated with congenital infection were confirmed (10 positive for syphilis, 6 for toxoplasmosis and 4 for cytomegalovirus). Considering co-circulation of different arbovirus in RS, including Dengue virus, CHIKV, and ZIKV, and the presence of Aedes aegypti and Aedes albopictus in the area, surveillance of patients infected by these viruses contributes to the control and prevention of such diseases. Practical difficulties in diagnosing these infections are discussed. Copyright © 2017 John Wiley & Sons, Ltd.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5479620','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5479620"><span>Health hazard evaluation report HETA 88-153-2072, Buckeye Hills Career Center, <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Ohio</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Almaguer, D.; Blade, L.M.</p> <p>1990-10-01</p> <p>In response to a request from employees at the Buckeye Hills Career Center (SIC-8249) located in <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Ohio, an investigation was made of symptoms experience by the Cosmetology instructors which were believed to be associated with exposures to hair care and cosmetology products used in the Cosmetology Clinic. Employees were interviewed, and environmental sampling was conducted. The use of paraformaldehyde (30525894) cabinet fumigants was found to be a source of airborne formaldehyde (50000) and contributed to airborne formaldehyde concentrations within the clinic. Sample results showed high airborne concentrations of formaldehyde within towel cabinets and student cosmetic kits. Inadequate amounts of fresh outside air were supplied to the Clinic. Other products containing formaldehyde also contributed to the air quality. The authors conclude that a potential hazard existed due to exposure to formaldehyde. The authors recommend that where substances without formaldehyde could be substituted for those containing formaldehyde that the substitution be made. If product elimination or substitution is not feasible, then exposures should be controlled through the use of local exhaust ventilation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/1536745','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/1536745"><span>Paediatric dialysis and renal transplantation in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Garcia, C; Goldani, J; Garcia, V</p> <p>1992-01-01</p> <p>Renal replacement therapy (RRT) for Brazilian children with uraemia has been utilized since 1970 in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. One hundred and eighty patients receiving this therapy between 1970 and 1988 have been reviewed. The annual acceptance rate of new paediatric patients in this period increased from 0.6 to 6.5 patients per million child population. Glomerulonephritis (36.1%) and pyelonephritis including urological anomalies (31.7%) were the most frequent causes of end-stage renal disease. Outpatient hospital haemodialysis was the primary form of dialytic treatment in patients 5-15 years of age. Continuous ambulatory peritoneal dialysis was more often used in patients less than 5 years of age. The survival after 1 year on dialysis was 79.9% for children aged 5-15 years starting dialysis during the period 1985-1988. Fluid overload with congestive heart failure and infection were the main causes of death in children on dialysis. Eighty-four children received 93 grafts; only 14 (15%) were from cadaveric donors. One-year patient and graft survival of first living-related donor transplants were 92.2% and 78.5% respectively during the period 1985-1988. Infection accounted for 43.5% of deaths after transplantation. We conclude that RRT is becoming increasingly successful for children in our region but that greater emphasis upon patient compliance with all forms of RRT and upon cadaver kidney donation is needed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004CoMP..148..265K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004CoMP..148..265K"><span>Pressure and temperature evolution of upper mantle under the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kil, Y.; Wendlandt, R. F.</p> <p>2004-11-01</p> <p>Spinel peridotite xenoliths associated with the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift axis (Potrillo and Elephant Butte volcanic fields) and the western rift shoulder (Adam’s Diggings) have been investigated to correlate pre-eruptive pressure and temperature conditions with xenolith deformation textures and rift location. Temperatures of xenolith equilibration at the rift shoulder are 100 250°C cooler for a given pressure than the temperatures at the rift axis. Undeformed xenoliths (protogranular texture) are derived from higher temperature and higher pressure conditions than deformed xenoliths (porphyroclastic and equigranular textures) in the rift axis. Exsolution lamellae in pyroxenes, small decreases in Al contents of orthopyroxenes from core to rim, and small differences in porphyroclastic orthopyroxene compositions versus neoblastic orthopyroxene compositions indicate high temperatures followed by cooling and a larger cooling interval in deformed rocks than in undeformed rocks. These features, along with thermal histories based on calcium zoning in olivine rims, indicate that the upper mantle under Adam’s Diggings and Elephant Butte has undergone cooling from an initial high temperature state followed by a late heating event, and the upper mantle under Potrillo has undergone cooling, reheating, and late heating events.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007AGUFM.H51C0658A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007AGUFM.H51C0658A"><span>Modeling The Water Table In The Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> River Riparian Corridor</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Akasheh, O. Z.; Neale, C. M.</p> <p>2007-12-01</p> <p>The Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> River (MRGR) is the main source of fresh water for the state of New Mexico. An arid area with low water resources created a situation where water is extensively diverted or stored to supply the high demand for municipalities and agricultural activities. The extensive water diversions over the last few decades has affected the composition of the native riparian vegetation such as cottonwood and coyote willow and enhanced the spread of invasive species harmful to the river system such as Tamarisk and Russian Olives. The river aquatic system has also been badly affected. The need to study the river hydrological processes and their relation with its health is important to preserve the river ecosystem. The water table within the riparian zone is intrinsically connected to the flows in the river. Large withdrawals of water by Tamarisk affect the surface flows, which coupled with the large diversions for irrigation result in a complicated river management problem. In this paper we describe the methodology used to spatially model the water table depth between the river and the adjacent drains parallel to the river. Water table readings are used to check the model. Evapotranspiration by the riparian vegetation is estimated and included in the soil moisture balance. The model runs as an application in ArcGIS. Spatial layers include soils and riparian vegetation maps obtained from the classification of airborne high resolution multispectral imagery.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19860021679','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19860021679"><span>Heat and extension at mid- and lower crustal levels of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Olsen, K. H.; Baldridge, W. S.; Callender, J. F.</p> <p>1985-01-01</p> <p>The process by which large amounts (50 to 200 percent) of crustal extension are produced was concisely described by W. Hamilton in 1982 and 1983. More recently, England, Sawyer, P. Morgan and others have moved toward quantifying models of lithospheric thinning by incorporating laboratory and theoretical data on rock rheology as a function of composition, temperature, and strain rate. Hamilton's description identifies three main crustal layers, each with a distinctive mechanical behavior; brittle fracturing and rotation in the upper crust, discontinuous ductile flow in the middle crust and laminar ductile flow in the lower crust. The temperature and composition dependent brittle-ductile transition essentially defines the diffuse boundary between upper and middle crust. It was concluded that the heat responsible for the highly ductile nature of the lower crust and the lensoidal and magma body structures at mid-crustal depths in the rift was infused into the crust by relatively modest ( 10 percent by mass) magmatic upwelling (feeder dikes) from Moho levels. Seismic velocity-versus-depth data, supported by gravity modeling and the fact that volumes of rift related volcanics are relatively modest ( 6000 cubic km) for the <span class="hlt">Rio</span> <span class="hlt">Grande</span> system, all imply velocities and densities too small to be consistent with a massive, composite, mafic intrusion in the lower crust.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/1003719','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/1003719"><span>Serologic response of <span class="hlt">Rio</span> <span class="hlt">Grande</span> wild turkeys to experimental infections of Mycoplasma gallisepticum</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Rocke, Tonie E.; Yuill, Thomas M.</p> <p>1988-01-01</p> <p>The serologic response of <span class="hlt">Rio</span> <span class="hlt">Grande</span> wild turkeys (Meleagris gallopavo intermedia) to Mycoplasma gallisepticum (MG) was determined. Free-ranging turkeys were caught in southern Texas, shipped to the University of Wisconsin, Madison, and housed in isolation facilities. Fourteen birds were exposed to MG, by intratracheal and intranasal inoculation. Eight birds received sterile broth only. Two wk prior to the end of the experiment, MG exposed turkeys were stressed by challenge with a serologically unrelated mycoplasma. Serum from all exposed birds reacted positively for MG antibody by the rapid plate agglutination (RPA) procedure within 2 mo postexposure (PE) and all but one remained positive for 14 mo PE. Less than one half of the exposed birds developed positive MG antibody titers detectable by the hemagglutination inhibition (HI) test within 2 mo PE, and by 10 mo PE, none had positive titers. Antibody was detected by the HI test in two of 11 infected turkeys, 14 mo PE, and titers increased significantly within 2 wk. MG was isolated from tracheal swabs from two infected birds 2 mo PE, but attempts thereafter failed. However, at the termination of the experiment 15 mo later, MG was isolated from lung tissue of three of 11 exposed turkeys and from a blood clot found in the lower trachea of one bird.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/19219246','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/19219246"><span>[Mapping harm reduction programs in Greater Metropolitan Porto Alegre, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Nardi, Henrique Caetano; Rigoni, Rafaela de Quadros</p> <p>2009-02-01</p> <p>This study mapped and described 11 harm reduction interventions/programs in Greater Metropolitan Porto Alegre, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul State, Brazil, in 2004-2006. Mapping was based on interviews and analysis of available documents and comparison with a previous study with data from 2003. We aimed to discuss the programs' sustainability (political, financial, and administrative) and operational characteristics, based on the following categories: type of links in the program or intervention; forms of inclusion in the municipalities; background, financing; typical activities; team hiring practices; volunteer work, if any; resources (human and financial); partnerships; municipal legislation, if any; and participation in forums for political representation. Despite the diversity of links and organizational formats, there were some common characteristics: precarious professional status; dependence on volunteer work to implement activities; influence of turnover in Municipal and State administration on the continuity of projects and partnerships, as well as on the maintenance of human and financial resources. We conclude that such factors lead to lack of continuity in the services provided to the target population.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27438030','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27438030"><span>HOSPITALIZATIONS FOR CHOLECYSTITIS AND CHOLELITHIASIS IN THE STATE OF <span class="hlt">RIO</span> <span class="hlt">GRANDE</span> DO SUL, BRAZIL.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Nunes, Emeline Caldana; Rosa, Roger Dos Santos; Bordin, Ronaldo</p> <p>2016-01-01</p> <p>The cholelithiasis is disease of surgical resolution with about 60,000 hospitalizations per year in the Sistema Único de Saúde (SUS - Brazilian National Health System) of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state. To describe the profile of hospitalizations for cholecystitis and cholelithiasis performed by the SUS of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state, 2011-2013. Hospital Information System data from the National Health System through morbidity list for cholelithiasis and cholecystitis (ICD-10 K80-K81). Variables studied were sex, age, number of hospitalizations and approved Hospitalization Authorizations (AIH), total amount and value of hospital services generated, days and average length of stay, mortality, mortality and case fatality ratio, from health regions of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. During 2011-2013 there were 60,517 hospitalizations for cholecystitis and cholelithiasis, representing 18.86 hospitalizations per 10,000 inhabitants/year, most often in the age group from 60 to 69 years (41.34 admissions per 10,000 inhabitants/year) and female (27.72 hospitalizations per 10,000 inhabitants/year). The fatality rate presented an inverse characteristic: 13.52 deaths per 1,000 admissions/year for males, compared with 7.12 deaths per 1,000 admissions/year in females. The state had an average total amount spent and value of hospital services of R$ 16,244,050.60 and R$ 10,890,461.31, respectively. The health region "Capital/Gravataí Valley" exhibit the highest total expenditure and hospital services, and the largest number of deaths, and average length of stay. The hospitalization and lethality coefficients, the deaths, the length of stay and spending related to admissions increased from 50 years old. Females had a higher frequency and higher values ​​spent on hospitalization, while the male higher coefficient of mortality and mean hospital stay. A colelitíase é doença de resolução cirúrgica com cerca de 60.000 internações por ano no Sistema Único de Saúde no estado do <span class="hlt">Rio</span></p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1986/4113/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1986/4113/report.pdf"><span>Hydrologic analysis of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin north of Embudo, New Mexico; Colorado and New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Hearne, G.A.; Dewey, J.D.</p> <p>1988-01-01</p> <p>Water yield was estimated for each of the five regions that represent contrasting hydrologic regimes in the 10,400 square miles of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin above Embudo, New Mexico. Water yield was estimated as 2,800 cubic feet per second for the San Juan Mountains, and 28 cubic feet per second for the Taos Plateau. Evapotranspiration exceeded precipitation by 150 cubic feet per second on the Costilla Plains and 2,400 cubic feet per second on the Alamosa Basin. A three-dimensional model was constructed to represent the aquifer system in the Alamosa Basin. A preliminary analysis concluded that: (1) a seven-layer model representing 3,200 feet of saturated thickness could accurately simulate the behavior of the flow equation; and (2) the 1950 condition was approximately stable and would be a satisfactory initial condition. Reasonable modifications to groundwater withdrawals simulated 1950-79 water-level declines close to measured value. Sensitivity tests indicated that evapotranspiration salvage was the major source, 69 to 82 percent, of groundwater withdrawals. Evapotranspiration salvage was projected to be the source of most withdrawals. (USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7000840','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7000840"><span>Significant cenozoic faulting, east margin of the Espanola basin, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Vernon, J.H. ); Riecker, R.E.</p> <p>1989-03-01</p> <p>Tectonic interpretation of the east margin of the Espanola Basin, <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift, New Mexico, has been controversial. Previous authors have disagreed as to whether significant faulting defines the boundary between the basin and the Sangre de Cristo Mountains. A more recent geophysical basin transect that suggests no significant faulting and field observation of faceted spurs along the western Sangre de Cristo Mountain front indicating a faulted margin motivate our study. The east margin of the Espanola Basin for about 37 km north of Santa Fe, New Mexico, is marked by a complex array of significant, late Cenozoic high-angle faults. Locally, three parallel, north-trending, high-angle faults cut Precambrian basement and Tertiary basin-full rocks along the basin margin. Elsewhere along the margin, tilted fault blocks and intersecting faults occur. Fault area, fault attitude with depth, magnitude of fault motion, and timing of fault motion remain uncertain. However, faults studied in detail are 1-2 km long, have minimum dip-slip motion of 33-100 m, and underwent movement during the late Cenozoic. Potentially significant tectonic and seismic hazard implications arise from the possibility of post-150 ka fault motion.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1984/4268/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1984/4268/report.pdf"><span>Potential incremental seepage losses in an alluvial channel in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gold, R.L.</p> <p>1985-01-01</p> <p>A two-dimensional, digital, cross-sectional model was used to simulate seepage of water from an alluvial channel, which had the general characteristic of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> channel, into the underlying alluvium within the reach from Cochiti Dam to Elephant Butte Reservoir. Seepage rates were determined for losing and gaining reaches, and reaches affected by pumping of ground water. The seepage rates were computed for stream surcharges (height of additional water applied on top of base flow) ranging from 0.5 foot to 3 feet and for application periods ranging from 1 to 100 days. The net seepage rates, which were nearly identical for each type of reach, ranged from 0.0 cubic foot per second per mile of channel length for a 0.5 foot surcharge applied for 1 day to 0.37 cubic foot per second per mile of channel length for a 3 feet surcharge applied for 100 days, followed by a 180 day seepage return flow from the aquifer. (USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017EGUGA..19.1955O','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017EGUGA..19.1955O"><span>Evaluating the State of Water Management in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Bravo Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ortiz Partida, Jose Pablo; Sandoval-Solis, Samuel; Diaz Gomez, Romina</p> <p>2017-04-01</p> <p>Water resource modeling tools have been developed for many different regions and sub-basins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Bravo (RGB). Each of these tools has specific objectives, whether it is to explore drought mitigation alternatives, conflict resolution, climate change evaluation, tradeoff and economic synergies, water allocation, reservoir operations, or collaborative planning. However, there has not been an effort to integrate different available tools, or to link models developed for specific reaches into a more holistic watershed decision-support tool. This project outlines promising next steps to meet long-term goals of improved decision support tools and modeling. We identify, describe, and synthesize water resources management practices in the RGB basin and available water resources models and decision support tools that represent the RGB and the distribution of water for human and environmental uses. The extent body of water resources modeling is examined from a perspective of environmental water needs and water resources management and thereby allows subsequent prioritization of future research and monitoring needs for the development of river system modeling tools. This work communicates the state of the RGB science to diverse stakeholders, researchers, and decision-makers. The products of this project represent a planning tool to support an integrated water resources management framework to maximize economic and social welfare without compromising vital ecosystems.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21882008','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21882008"><span>Prevalence of acanthamoeba from tap water in <span class="hlt">rio</span> <span class="hlt">grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Winck, Mari Aline Todero; Caumo, Karin; Rott, Marilise Brittes</p> <p>2011-11-01</p> <p>A total of 136 samples of tap water were collected from state and municipal schools between March and November 2009. The samples were filtered through cellulose nitrate membranes that were seeded at non-nutrient agar 1.5% containing an overlayer of Escherichia coli suspension. Thirty-one (22.79%) tap water samples investigated were found positive for free-living amoebae (FLA). From these, 13 presented as FLA that seems to belong to the genus Acanthamoeba. All samples of FLA were cloned and identified as belonging to the genus Acanthamoeba by the morphology of cysts and trophozoites and by PCR using genus-specific primers that amplify the ASA.S1 region of 18S rDNA gene. Physiological tests of thermotolerance and osmotolerance were used to evaluate the pathogenicity of the isolates. The sequencing analysis by comparing the sequences submitted to GenBank, showed genotype distribution into groups T2, T2/T6, T6, and T4. In tests of thermotolerance and osmotolerance, 50% of the isolates had a low pathogenic potential. The results indicated the presence of Acanthamoeba in tap water in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, revealing its importance and the need for more epidemiological studies to determine their distribution in the environment and its pathogenic potential.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_18 --> <div id="page_19" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="361"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23804658','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23804658"><span>The role of community health workers in combating type 2 diabetes in the <span class="hlt">rio</span> <span class="hlt">grande</span> valley.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ryabov, Igor; Richardson, Chad</p> <p>2011-01-01</p> <p>The purpose of this study was to determine the effectiveness of the use of community health workers (CHWs, aka promotoras de salud in Spanish) in the control of type 2 diabetes (diabetes mellitus) in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (RGV). Known from the literature as "a disease of the 21st century" and being the third leading cause of death in the United States, type 2 diabetes is a very common disease in the RGV because of its predominantly Mexican American population, a group genetically vulnerable to the disease. Unlike prior studies that examined the overall effectiveness of the CHW model, the authors used registered CHWs as primary diabetes educators. Another innovation of this study was the authors monitored a wide range of biologic (HbA1c and body mass index [BMI]) and behavioral (diabetes knowledge, self-efficacy, self-management activities scores) outcomes. The research hypothesis was that the educational service provided by CHWs to the diabetic patients would assist them in controlling their disease. The design of the study was experimental. The target population consisted of Mexican American adults from RGV diagnosed with type 2 diabetes and willing to participate. The intervention group received monthly visits from CHWs. The results showed a significant improvement after one year of intervention in all outcomes, except BMI, in the experimental group.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB5-4914R0J-60&_user=696292&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000038819&_version=1&_urlVersion=0&_userid=696292&md5=85763bd1fa670855d3b48de5ee0dc1b0','USGSPUBS'); return false;" href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB5-4914R0J-60&_user=696292&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000038819&_version=1&_urlVersion=0&_userid=696292&md5=85763bd1fa670855d3b48de5ee0dc1b0"><span>Exposure to insecticides of brushland wildlife within the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley Texas USA</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Custer, T.W.; Mitchell, C.A.</p> <p>1987-01-01</p> <p>Brushland wildlife within the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of south Texas were studied following applications of eleven insecticides to nearby sugarcane or cotton fields. During the study no wildlife were found dead. Mean brain acetycholinesterase (AChE) activity of great-tailed grackles (Quiscalus mexicanus) and mourning doves (Zenaida microura) was significantly lower than controls following application of some organophosphorus insecticides. Brain AChE activity varied significantly among chemicals, days after exposure and lactin rates. Mean brain AChE activity of white-winged doves (Zenaida asiatica) and three small mammals species was not significantly different than their respective control following application of the insecticides. Mean brain AChE activity of grackles was inhibited significantly more than white-winged doves after application of Bolstar, EPN-methyl parathion, and Azodrin and significantly more than that of mourning doves after applications of Bolstar and EPN-methyl parathion. Our data indicate that there were no adverse effects on most brushland wildlife. Exposure was probably dependent upon use of the agricultural fields as feeding or resting site and only grackles and mourning doves were regularly present in the fields.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB5-4914R0J-60&_user=696292&_coverDate=12%2F31%2F1987&_rdoc=3&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%235917%231987%23999549996%23439658%23FLP%23display%23Volume)&_cdi=5917&_sort=d&_docanchor=&_ct=11&_acct=C000038819&_version=1&_urlVersion=0&_userid=696292&md5=b96cdcf0b8815456f04f9019d0b5470e','USGSPUBS'); return false;" href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB5-4914R0J-60&_user=696292&_coverDate=12%2F31%2F1987&_rdoc=3&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%235917%231987%23999549996%23439658%23FLP%23display%23Volume)&_cdi=5917&_sort=d&_docanchor=&_ct=11&_acct=C000038819&_version=1&_urlVersion=0&_userid=696292&md5=b96cdcf0b8815456f04f9019d0b5470e"><span>Exposure to insecticides of brushland wildlife within the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, Texas, USA</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Custer, T.W.; Mitchell, C.A.</p> <p>1987-01-01</p> <p>Brushland wildlife within the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of south Texas were studied following applications of eleven insecticides to nearby sugarcane or cotton fields. During the study no wildlife were found dead. Mean brain acetylcholinesterase (AChE) activity of great-tailed grackles (Quiscalus mexicanus) and mourning doves (Zenaida macroura) was significantly lower than controls following application of some organophosphorous insecticides. Brain AChE activity varied significantly among chemicals, days after exposure and application rates. Mean brain AChE activity of white-winged doves (Zenaida asiatica) and three small mammal species was not significantly different than their respective controls following application of insecticides. Mean brain AChE activity of grackles was inhibited significantly more than white-winged doves after application of Bolstar, EPN-methyl parathion, and Azodrin and significantly more than that of mourning doves after applications of Bolstar and EPN-methyl parathion. Our data indicate that there were no adverse effects on most brushland wildlife. Exposure was probably dependent upon use of the agricultural fields as feeding or resting sites and only grackles and mourning doves were regularly present in the fields.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23781729','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23781729"><span>[Job stress in agents at the socio-educational service centers in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Greco, Patrícia Bitencourt Toscani; Magnago, Tânia Solange Bosi de Souza; Beck, Carmem Lúcia Colomé; Urbanetto, Janete de Souza; Prochnow, Andrea</p> <p>2013-03-01</p> <p>The study was both to understand the association of work stress, socio-demographic and labor characteristics, habits and working conditions of the Socio-educational agents in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul Brazil. It was a cross-sectional study with 881 agents of the Socio-educational Service Centers in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. The Brazilian version of the Job Stress Scale for assessment of work stress has been applied. Were classified in a situation of high strain 19.2% of the agents. The following factors were related to job stress, the need for counseling lack of leisure time, day shift work, dissatisfaction with the workplace, the need for absence from work due to health problems and insufficient scale work. There is a need to further research working conditions and execution of Occupational Health Service acting in order to minimize the effects of psychological demands at work of a socio-educational agent</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28399203','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28399203"><span>Checklist of Mosquito Species (Diptera: Culicidae) in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte State, Brazil-Contribution of Entomological Surveillance.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Lázaro Silva Inácio, Cássio; Hilário Tavares da Silva, José; César de Melo Freire, Renato; Antonaci Gama, Renata; Brisola Marcondes, Carlos; de Fátima Freire de Melo Ximenes, Maria</p> <p>2017-05-01</p> <p>The distribution of mosquito species in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte state, Brazil, was compiled from published data mid-2016 and a review of specimens deposited in the entomological collection of the Entomology Laboratory of the Federal University of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte. The existing records exist for 40 of the 167 municipalities in the state. The specimens in the Entomology Laboratory were collected using Shannon traps and by active search for immature individuals and from aquatic habitats using standard methods, in preserved Atlantic Forest and Caatinga remnants, located in urban and rural areas of the state. In total were recorded 76 species distributed into 25 subgenera, 15 genera, nine tribes, and two subfamilies, in addition to 15 new species records for the state. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21931513','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21931513"><span>Determination of β haplotypes in patients with sickle-cell anemia in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Cabral, Cynthia Hatsue Kitayama; Serafim, Edvis Santos Soares; de Medeiros, Waleska Rayane Dantas Bezerra; de Medeiros Fernandes, Thales Allyrio Araújo; Kimura, Elza Miyuki; Costa, Fernando Ferreira; de Fátima Sonati, Maria; Rebecchi, Ivanise Marina Moretti; de Medeiros, Tereza Maria Dantas</p> <p>2011-07-01</p> <p>β(S) haplotypes were studied in 47 non-related patients with sickle-cell anemia from the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil. Molecular analysis was conducted by PCR/RFLP using restriction endonucleases XmnI, HindIII, HincII and HinfI to analyze six polymorphic sites from the beta cluster. Twenty-seven patients (57.5%) were identified with genotype CAR/CAR, 9 (19.1%) CAR/BEN, 6 (12.8%) CAR/CAM, 1 (2.1%) BEN/BEN, 2 (4.3%) CAR/Atp, 1 (2.1%) BEN/Atp and 1 (2.1%) with genotype Atp/Atp. The greater frequency of Cameroon haplotypes compared to other Brazilian states suggests the existence of a peculiarity of African origin in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED467122.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED467122.pdf"><span>Llano <span class="hlt">Grande</span> Center's Oral History Project Sparks Cultural and Economic Renewal in Texas's <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley. Rural Trust Featured Project.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Null, Elizabeth Higgins</p> <p></p> <p>The Llano <span class="hlt">Grande</span> Center for Research and Development started as an oral history experiment in two of Texas's poorest school districts. Since the 1920s, when this arid region in the southernmost tip of Texas was first transformed into the orchards and farmlands of the "Magic Valley," workers of Mexican descent have worked the land. Over…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA566399','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA566399"><span>Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Bosque Ecosystem Restoration Feasibility Study Habitat Assessment Using Habitat Evaluation Procedures (HEP): Analyses, Results and Documentation</span></a></p> <p><a target="_blank" href="http://www.dtic.mil/">DTIC Science & Technology</a></p> <p></p> <p>2012-08-01</p> <p>hydrology and soils characteristics, and clearly delineate these distinctions on a map. The final classification system , based primarily upon dominant...water management activities (e.g., hydrologic altera- tions, urban development and agricultural production) were identified as the system’s key...ER D C/ EL T R -1 2 -2 1 System -Wide Water Resources Program Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Bosque Ecosystem Restoration Feasibility Study Habitat</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19840018013','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19840018013"><span>Irrigated rice area estimation using remote sensing techniques: Project's proposal and preliminary results. [<span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Parada, N. D. J. (Principal Investigator); Deassuncao, G. V.; Moreira, M. A.; Novaes, R. A.</p> <p>1984-01-01</p> <p>The development of a methodology for annual estimates of irrigated rice crop in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, using remote sensing techniques is proposed. The project involves interpretation, digital analysis, and sampling techniques of LANDSAT imagery. Results are discussed from a preliminary phase for identifying and evaluating irrigated rice crop areas in four counties of the State, for the crop year 1982/1983. This first phase involved just visual interpretation techniques of MSS/LANDSAT images.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19830006305','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19830006305"><span>An application of cluster analysis for determining homogeneous subregions: The agroclimatological point of view. [<span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Parada, N. D. J. (Principal Investigator); Cappelletti, C. A.</p> <p>1982-01-01</p> <p>A stratification oriented to crop area and yield estimation problems was performed using an algorithm of clustering. The variables used were a set of agroclimatological characteristics measured in each one of the 232 municipalities of the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil. A nonhierarchical cluster analysis was used and the pseudo F-statistics criterion was implemented for determining the "cut point" in the number of strata.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18825443','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18825443"><span>Assessment of organochlorine pesticide levels in Manadas Creek, an urban tributary of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Laredo, Texas.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Flores, Brianna; Camarena, Celina; Ren, Jianhong; Krishnamurthy, Sushma; Belzer, Wayne</p> <p>2009-07-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> is the natural boundary between the United States and Mexico from El Paso, Texas, to Brownsville, Texas. It supports about 12 million people on both sides of the border for municipal, agricultural, industrial, and recreational uses. The rapid population and economic growth along the border region has led to increased pollution in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, which has been linked to several border health issues associated with pesticide contamination. This project was initiated to assess the organochlorine pesticide levels in the water and sediments in Manadas Creek, an urban tributary of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> located in north Laredo, Texas. Water and sediment samples were collected monthly during a 6-month period from July to December of 2006 and analyzed using gas chromatography with an electron capture detector after extraction via a solid-phase microextraction technique. Among the water and sediment samples collected, several organochlorine pesticides including alpha-, beta-, and gamma-hexachlorocyclohexane (HCH), heptachlor epoxide, endrin, and 4,4'-DDT were found in either the creek water or sediments. Analysis of variance results indicated that only gamma-HCH had significant variation in the creek water among the sampling periods. Comparison of results with previous findings showed the presence of higher levels of HCH isomers and much lower DDT concentrations in the present study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28513797','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28513797"><span>Oral health self-perception in quilombola communities in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul: a cross-sectional exploratory study.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bidinotto, Augusto Bacelo; D'Ávila, Otávio Pereira; Martins, Aline Blaya; Hugo, Fernando Neves; Neutzling, Marilda Borges; Bairros, Fernanda de Souza; Hilgert, Juliana Balbinot</p> <p>2017-01-01</p> <p>There's a shortage of evidence on the oral health of quilombolas. This study aims to describe oral health self-perception, as well as to verify its associated factors in quilombola communities in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. The data for this cross-sectional health survey were collected by application of a questionnaire. Since this study was part of a survey on nutritional security, the probabilistic cluster sample was estimated for the outcome of nutritional insecurity, comprising 583 individuals across quilombola communities in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. The association between the outcome of negative oral health self-perception and sociodemographic, general health, and oral health variables was measured by prevalence ratios obtained through Poisson regressions with robust variance and 95% confidence intervals. Negative self-rated oral health was reported by 313 (53.1%) of the individuals. Satisfaction with chewing ability and satisfaction with oral appearance were associated with a higher prevalence of negative perception of oral health, while there was no association between the outcome and number of teeth. Use of alcohol had a borderline association with the outcome. Satisfaction with appearance and chewing ability are factors associated with oral-health self-perception of the quilombolas in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012AGUFMED23B0759G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012AGUFMED23B0759G"><span>Using Earthquake Intensity Data to Determine Earthquake Locations and Magniitudes of PRE-1966 Events in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift Region</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Galvan, P.; Castro, J.; Doser, D. I.</p> <p>2012-12-01</p> <p>Prior to the use of modern seismographs beginning in the mid-1960's, not much information exists on the location and magnitudes of earthquakes in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift and surrounding regions of Colorado, New Mexico, west Texas, and Chihuahua, Mexico. However, a fair amount of intensity information is available for these earthquakes. Using procedures originally developed by Bakun and Wentworth (1997) we can use intensity information for well located, recent earthquakes as calibration events to develop intensity-distance attenuation models. The intensity attenuation models can then be used to determine the epicenters and magnitudes for the older events. Preliminary analysis of intensity data for recent events in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift-southeastern Rocky Mountains area suggest this region has a similar intensity attenuation relationship to that determined by Bakun (2006) for the Basin and Range province. Intensity data for recent events in the eastern Colorado Plateau and westernmost Great Plains appears consistent with intensity attenuation models developed by Bakun and Hopper (2004) for eastern North America. We will use these attenuation models to determine the magnitudes and locations of pre-1966 events, with special emphasis on events occurring in the central <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift between 1905 and 1950.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/2000/4003/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/2000/4003/report.pdf"><span>Electromagnetic surveys to detect clay-rich sediment in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> inner valley, Albuquerque area, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bartolino, James R.; Sterling, Joseph M.</p> <p>2000-01-01</p> <p>Information on the presence of clay-rich layers in the inner-valley alluvium is essential for quantifying the amount of water transmitted between the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and the Santa Fe Group aquifer system. This report describes a study that used electromagnetic surveys to provide this information. In the first phase of the study, electromagnetic soundings were made using time-domain and frequency-domain electro- magnetic methods. On the basis of these initial results, the time- domain method was judged ineffective because of cultural noise in the study area, so subsequent surveys were made using the frequency-domain method. For the second phase of the study, 31 frequency-domain electromagnetic surveys were conducted along the inner valley and parallel to the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Albuquerque area in the spring and summer of 1997 to determine the presence of hydrologically significant clay-rich layers buried in the inner-valley alluvium. For this report, the 31 survey sections were combined into 10 composite sections for ease of interpretation. Terrain-conductivity data from the surveys were modeled using interpretation software to produce geoelectric cross sections along the survey lines. This modeling used lithologic logs from two wells installed near the survey lines: the Bosque South and <span class="hlt">Rio</span> Bravo 5 wells. Because of cultural interference, location of the wells and soundings, complex stratigraphy, and difficulty interpreting lithology, such interpretation was inconclusive. Instead, a decision process based on modeling results was developed using vertical and horizontal dipole 40-meter intercoil spacing terrain-conductivity values. Values larger than or equal to 20 millisiemens per meter were interpreted to contain a hydrologically significant thickness of clay-rich sediment. Thus, clay-rich sediment was interpreted to underlie seven segments of the 10 composited survey lines, totaling at least 2,660 meters of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> inner valley. The longest of these clay</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18379606','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18379606"><span>[Indoor air quality in school facilities in <span class="hlt">Cassino</span> (Italy)].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Langiano, Elisa; Lanni, Liana; Atrei, Patrizia; Ferrara, Maria; La Torre, Giuseppe; Capelli, Giovanni; De Vito, Elisabetta</p> <p>2008-01-01</p> <p>This study evaluated the indoor air quality of 26 classrooms of secondary schools in the city of <span class="hlt">Cassino</span> (Italy). Two types of school buildings were assessed: buildings specifically designed as schools, and former dwellings converted to schools. Measurements were taken in both winter and spring months, before students entered the classrooms and while the classrooms were occupied. Lower thermal comfort levels were observed during the winter months; in fact, during the winter, ideal temperature, humidity and air speed parameters were found in only a small percentage of classrooms and students were found to experience thermal discomfort as a result. Air velocity was often found to be inadequate both in winter and spring months and in both types of school buildings evaluated. Illumination levels measured during the winter months with both natural daylight and mixed illumination, were found to be below 200 lux, the minimum recommended level recommended by the ministerial decree 18.12.1975. Noise levels above the maximum level recommended by the ministerial decree 01.03.1991 were also frequently observed. The symptoms most frequently reported by students were headache, difficulties in concentrating, cough, and unusual tiredness. The various discomfort situations observed in both types of school buildings point toward a need for greater attention toward indoor air quality of schools as this can have affect students' attention, concentration, productivity and comfort.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70022985','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70022985"><span>The occurrence and distribution of selected trace elements in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> and tributaries in Colorado and Northern New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Taylor, H.E.; Antweiler, R.C.; Roth, D.A.; Brinton, T.I.; Peart, D.B.; Healy, D.F.</p> <p>2001-01-01</p> <p>Two sampling trips were undertaken in 1994 to determine the distribution of trace elements in the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> and several of its tributaries. Water discharges decreased in the main stem of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from June to September, whereas dissolved concentrations of trace elements generally increased. This is attributed to dilution of base flow from snowmelt runoff in the June samples. Of the three major mining districts (Creede, Summitville, and Red River) in the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainage basin, only the Creede District appears to impact the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in a significant manner, with both waters and sediments having elevated concentrations of some trace elements considerably downriver. For example, dissolved zinc concentrations upriver of Willow Creek, which primarily drains the Creede District, were about 2-3 μg/L; immediately downstream of the Willow Creek confluence, concentrations were above 20 μg/L; and elevated concentrations occurred in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for the next 100 km. The Red River District does not significantly impact the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> for most trace elements. Because of current water management practices, it is difficult to assess the impact of the Summitville District on the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span>. There are, however, large increases in many dissolved trace element concentrations as the <span class="hlt">Rio</span> <span class="hlt">Grande</span> passes through the San Luis Valley, coincident with elevated concentrations of those same trace elements in tributaries. Among these elements are As, B, Cr, Li, Mn, Mo, Ni, Sr, U, and V. None of the trace elements exceeded U.S. EPA primary drinking water standards in either survey, with the exception of cadmium in Willow Creek. Secondary drinking water standards were frequently violated, especially in tributaries draining areas where mining has occurred. Dissolved zinc (in Willow Creek in both June and September) was the only element that exceeded the EPA Water Quality Criteria for aquatic life of 120 μg/L.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AGUFM.V11C2811C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AGUFM.V11C2811C"><span>Eruption History and Geochemical Evolution of Servilleta Basalt Along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Gorge, Colorado and New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cosca, M. A.; Thompson, R. A.; Turner, K. J.; Morgan, L. E.</p> <p>2016-12-01</p> <p>Subalkaline basalt to basaltic andesite lava flows formally known as Servilleta Basalt (SB) are the most voluminous rock type forming the Pliocene Taos Plateau volcanic field. Pleistocene incision by the <span class="hlt">Rio</span> <span class="hlt">Grande</span> into the bedrock-floored plateau has resulted in spectacular exposures of occasionally thick ( 240 m) accumulations of SB within the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge. Incremental CO2 laser heating of individual rock fragments, the SB within and along the length of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> gorge has been precisely dated by 40Ar/39Ar geochronology to between 5.3 Ma and 3.3 Ma. SB older than 4 Ma is restricted to some lava flows exposed between La Junta point, at the confluence of the Red River and <span class="hlt">Rio</span> <span class="hlt">Grande</span>, and the Gorge Bridge crossing northwest of Taos, NM. Vertical sampling through thick SB flow sequences within the gorge yields precise emplacement histories and also reveals small but systematic major and minor element concentration variations (including Si, Rb, Sr, Cu and Zn). 40Ar/39Ar data show that these trends developed over short (0-250 ka) timescales, and probably relate to partial assimilation of crust, possibly at multiple depths. Combined field, geochemical, and 40Ar/39Ar data consequently record short-lived changes in tholeiitic melt compositions in response to regional extension and development of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. The age, lateral extent, and thickness of exposed SB partially reflect the paleotopographic surface of the southern San Luis Basin prior to onset of Pliocene Taos Plateau volcanic field magmatism; paleotopographic highs diverted some flows while topographic lows were areas of infilling and accumulation. Heterogeneous basin paleotopography developed during contemporaneous or precursory andesitic to dacitic volcanism, extensional faulting and subsidence of sub-basins within the San Luis Basin, and deposition of prograding alluvial fans that originated in the Sangre de Cristo and Picuris Mountains. SB flowed into the southern San Luis Valley beginning 5</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007BASBr..27..118F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007BASBr..27..118F"><span>On Ensino de Astronomia nas Cidades de Ribeirão Pires e <span class="hlt">Rio</span> <span class="hlt">Grande</span> da Serra</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Faria, R. Z.; Voelzke, M. R.</p> <p>2007-08-01</p> <p>Apesar da astronomia ser um dos temas indicados pelos Parâmetros Curriculares Nacionais, observa-se que poucas mudanças ocorreram desde a implementação do mesmo em sala de aula. A presente pesquisa diz respeito sobre como os tópicos de astronomia estão sendo abordados pelos professores no ensino médio. Optou-se por aplicar um questioná<span class="hlt">rio</span> com os professores que ministram a disciplina de física. Os mesmos trabalham em escolas estaduais situadas nas cidades de Ribeirão Pires e <span class="hlt">Rio</span> <span class="hlt">Grande</span> da Serra, ambas subordinadas a Diretoria de Ensino de Mauá, no Estado de São Paulo. O questioná<span class="hlt">rio</span> foi aplicado durante o 2° semestre de 2006. Até o momento os resultados são preliminares. Dos 82,0% dos professores que responderam ao questioná<span class="hlt">rio</span> no município de <span class="hlt">Rio</span> <span class="hlt">Grande</span> da Serra, 66,7% não aplicaram nenhum tópico de astronomia, 77,8% não utilizaram qualquer tipo de programa computacional, 66,7% não utilizaram laborató<span class="hlt">rio</span>, que 77,8% nunca levaram os alunos a museus e ou planetá<span class="hlt">rios</span> e que 66,7% não indicaram qualquer tipo de revista ou livro sobre astronomia aos seus alunos. No município de Ribeirão Pires, 53,3% dos professores responderam ao questioná<span class="hlt">rio</span>, destes 75,0% não aplicaram nenhum tópico de astronomia, 93,8% não utilizaram qualquer tipo de programa computacional, 75,0% não utilizaram laborató<span class="hlt">rio</span>, 81,3% nunca levaram os alunos a museus e ou planetá<span class="hlt">rio</span> e 56,3% não indicaram qualquer tipo de revista ou livro sobre astronomia ao seus alunos. Apesar da maioria dos professores reconhecerem que o conteúdo de astronomia influi na formação do jovem, os mesmos não incluem o tema em seus planejamentos escolares.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2003EAEJA.....7749L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2003EAEJA.....7749L"><span>Hydrogeological characterization of a bank filtration experiment site at the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, El Paso, Texas, USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Langford, R.; Schulze-Makuch, D.; Pillai, S.; Abdel-Fattah, A.; Widmer, K.</p> <p>2003-04-01</p> <p>An experiment site was constructed along an artificial channel of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in El Paso, Texas. The experiment was funded by the EPA and is designed to measure the effectiveness of bank filtration in an arid environment. Regionally, the experiment is important because of the hundreds of thousands of people drinking water from shallow wells drilled in close proximity to septic systems. A pumping well was drilled 17 meters from the stream bank and screened from 3.5 to 8 m depth. A cruciform array of observation wells with several multilevel completions allows detection of downstream and vertical movement of water as well as flow from the stream to the well. All of the wells were continuously cored during drilling. Analysis of the cores reveals that the site consists of two stacked channels filled with sand deposited from the meandering <span class="hlt">Rio</span> <span class="hlt">Grande</span>. A grid of ground-penetrating radar lines provided three-dimensional coverage between wells and showed bedding to 6.5 m depth. Constant head hydraulic conductivities show that the aquifer consists of two more permeable units separated by the less permeable upper fill of the lower channel complex, with vertical hydraulic conductivities of (1x10-6 to 2x10-6 m/s?). The intervals above and below this interval have the highest vertical conductivities (up to 3.5x10-5 m/s). A multiple pumping and tracer test was conducted using the cruciform array of the field site that consisted of a pumping well, 16 observation wells, and a stream sampling point. The average hydraulic conductivity of the geological media at the field site was about 2 x 10-3 m/s based on pumping test analysis. However, the type curve responses revealed significant heterogeneity of hydraulic conductivity throughout the field site. For the tracer test, bromide and microspheres were used as tracers. Microspheres were used to mimic the behavior of Giardia and Cryptosporidium. The tracers (bromide and microspheres of different sizes and colors) were injected in one</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1997/4017/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1997/4017/report.pdf"><span>Water-quality assessment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, Colorado, New Mexico and Texas; fish communities at selected sites, 1993-95</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Carter, L.F.</p> <p>1997-01-01</p> <p>Fish communities at 10 sites in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin were sampled during low-flow periods between 1993 and 1995 as part of the U.S. Geological Survey National Water-Quality Assessment Program. The ecology of fish communities is one of several lines of evidence used to characterize water-quality conditions. This report describes the fish communities at selected sites in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin and relates the structure of these fish communities to the physical and chemical characteristics of the streams. Twenty-nine species of fish representing 10 families were identified in 25 samples collected during this study. Species richness ranged from 1 to 13. Cluster analysis of the 25 samples collected during this study delineated four groups of sites that were based on the similarity of the fish communities. The first two groups were individual sites with low species richness. The third group contained the most samples, and the fourth group consisted of samples from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at Isleta, New Mexico, and the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at El Paso, Texas. The shift in community structure of samples from group 3 to group 4 reflects changes from predominantly coldwater fishes to warmwater fishes. Four metrics of biotic integrity (percentages of introduced individuals, omnivores, tolerant individuals, and anomalies) were used in this study to provide a broad overview of the community structure. The relative percentages of introduced species at the <span class="hlt">Rio</span> <span class="hlt">Grande</span> near Del Norte, Colorado; Saguache Creek near Saguache, Colorado; <span class="hlt">Rio</span> <span class="hlt">Grande</span> below Taos Junction Bridge, near Taos, New Mexico; and <span class="hlt">Rio</span> <span class="hlt">Grande</span> at Isleta are indicative of biological stress on the communities at these sites. The dominance of omnivores in samples from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> below Taos Junction Bridge, near Taos; <span class="hlt">Rio</span> Chama near Chamita, New Mexico; <span class="hlt">Rio</span> <span class="hlt">Grande</span> at Isleta; and <span class="hlt">Rio</span> <span class="hlt">Grande</span> at El Paso is an indication of environmental stress at these sites. In 1995, tolerant species accounted for the entire fish community at the <span class="hlt">Rio</span></p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_19 --> <div id="page_20" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="381"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMEP41A0913S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMEP41A0913S"><span>Configuration and Correlation of Fluvial Terrace Deposits In the Lower <span class="hlt">Rio</span> Salado Valley: A Record of Magmatic Uplift and Active Normal Faulting in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sion, B. D.; Axen, G. J.; Phillips, F. M.; Harrison, B.</p> <p>2015-12-01</p> <p>The <span class="hlt">Rio</span> Salado is a western tributary of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> whose valley is flanked by six major terrace levels. The <span class="hlt">Rio</span> crosses several active rift-related normal faults and the active, mid-crustal Socorro Magma Body (SMB; a sill at 19 km depth that is actively doming the land surface), providing an unusual opportunity to explore the effects of deep magma emplacement and active faulting on the terraces. <span class="hlt">Rio</span> Salado terraces were mapped using a high-resolution DEM and digital color stereophotographs and were projected onto a valley-parallel vertical plane to construct longitudinal profiles. Three new soil pits were described to aid terrace correlation. A net incision rate of 0.41 ± 0.06 m/ka was inferred from the correlation of a major fill-cut terrace to the 122 ± 18 ka Airport surface ~25 km south of the <span class="hlt">Rio</span> Salado. This incision rate is >1.5 times more rapid than estimated rates nearby or in other parts of New Mexico, but yields age estimates for other terraces that are consistent with soil development. Terrace gradients in the <span class="hlt">Rio</span> Salado have increased through time, indicating either stream response to <span class="hlt">Rio</span> <span class="hlt">Grande</span> incision or footwall tilting from the Quaternary Loma Blanca fault (LBF). Two terraces in the LBF hanging wall are back-tilted relative to their footwall counterparts, suggesting a listric geometry for the LBF. However, two others (Qtf and Qtc) are east-tilted relative to their footwall counterparts. Both Qtf and Qtc merge eastward with the next youngest terrace in the flight, and Qtc is arched, consistent with an earlier episode of surface uplift above the SMB. Future work will involve (a) additional terrace mapping over the SMB, (b) cosmogenic 36Cl depth profile dating of the <span class="hlt">Rio</span> Salado terraces to determine incision rates, allow regional terrace correlations, and constrain fault-slip slip rates and the record of SMB-related surface uplift, and (c) numerical modeling of SMB inflation constrained by uplift signals.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFM.T21E2212B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFM.T21E2212B"><span>Seismic Investigations of an Accommodation zone in the Northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico, USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Baldridge, W. S.; Valdes, J.; Nedorub, O.; Phrampus, B.; Braile, L. W.; Ferguson, J. F.; Benage, M. C.; Litherland, M.</p> <p>2010-12-01</p> <p>Seismic reflection and refraction data acquired in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift near Santa Fe, New Mexico, in 2009 and 2010 by the SAGE (Summer of Applied Geophysical Experience) program imaged the La Bajada fault (LBF) and strata offset across the associated, perpendicular Budagher fault (BF). The LBF is a major basin-bounding normal fault, offset down to the west; the smaller BF is an extensional fault that breaks the hanging wall ramp of the LBF. We chose this area because it is in a structurally complex region of the rift, comprising a small sub-basin and plunging relay ramps, where north-trending, en echelon basin-bounding faults (including the LBF) transfer crustal extension laterally between the larger Española (to north) and Albuquerque rift basins. Our data help determine the precise location and geometry of the poorly exposed LBF, which, near the survey location, offsets the rift margin vertically about 3,000 m. When integrated with industry reflection data and other SAGE seismic, gravity, and magnetotelluric surveys, we are able to map differences in offset and extension laterally (especially southward) along the fault. We interpret only about 200 m of normal offset across the BF. Our continuing work helps define multiple structural elements, partly buried by syn-rift basin-filling sedimentary rocks, of a complex intra-rift accommodation zone. We are also able to discriminate pre-Eocene (Laramide) from post-Miocene (rift) structures. Our data help determine the amount of vertical offset of pre-rift strata across structural elements of the accommodation zone, and depth and geometry of basin fill. A goal is to infer the kinematic development of this margin of the rift, linkages among faults, growth history, and possible pre-rift structural controls. This information will be potentially useful for evaluation of resources, including oil and/or gas in pre-rift strata and ground water in Late Miocene to Holocene rift-filling units.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFM.T43C4753B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFM.T43C4753B"><span>Gravity and Seismic Investigations of the Santo Domingo Basin, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Braile, L. W.; Ferguson, J. F.; Boucher, C.; Novitsky, C. G.; O'Shea, P. M.; Daves, J.; Marzen, R.; Mendoza, K.; Rasmussen, T.; Wei, W.; Baldridge, W. S.; Biehler, S.; Claytor, J. M.; Bischoff, S. H.; Ranasinghe, N. R.; Corredor, A.</p> <p>2014-12-01</p> <p>The SAGE (Summer of Applied Geophysical Experience) program collected new gravity, seismic, electromagnetic and down-hole temperature data in 2014 in the Santo Domingo Basin and adjacent areas of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR) area of northern New Mexico. The SAGE 2014 data collection was part of an integrated geophysical study of the area initiated in 2010 and adds data and interpretations to a W to E transect of the RGR. The transect includes previous SAGE seismic refraction and CMP reflection profiles recorded in 2010 and 2011, some industry seismic reflection data, and detailed gravity observations. Seismic data consisted of a 4.8 km NW to SE profile (120 three-component stations in four overlapping deployments, 20 m station spacing, using a Vibroseis source - 20 m spacing for reflection VPs; 800 m spacing for refraction VPs) along the Borrego Canyon road with both refraction and CMP reflection coverage. About 50,000 seismograms were recorded. The surface conditions (dry unconsolidated sediments) increased surface wave energy and limited the signal-to-noise level of reflection arrivals although some wide-angle reflections with two-way times as great as 1.8 s were visible. The refraction data were modeled with first arrival travel time methods and mainly helped identify the velocity and minimum thickness of the Tertiary Santa Fe group sedimentary rocks in the Santo Domingo Basin. Interpretation of the seismic and gravity data along the transect was aided by refraction velocities, the existence of a nearby regional seismic reflection profile from industry, and lithologies and well-logs from a deep well. Gravity modeling, with significant control on depths of interfaces and densities from the seismic and drill hole data, indicates that the Santo Domingo sedimentary basin has a total depth of about 6 km.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26562157','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26562157"><span>Leptospirosis in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil: An Ecosystem Approach in the Animal-Human Interface.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Schneider, Maria Cristina; Najera, Patricia; Pereira, Martha M; Machado, Gustavo; dos Anjos, Celso B; Rodrigues, Rogério O; Cavagni, Gabriela M; Muñoz-Zanzi, Claudia; Corbellini, Luis G; Leone, Mariana; Buss, Daniel F; Aldighieri, Sylvain; Espinal, Marcos A</p> <p>2015-11-01</p> <p>Leptospirosis is an epidemic-prone neglected disease that affects humans and animals, mostly in vulnerable populations. The One Health approach is a recommended strategy to identify drivers of the disease and plan for its prevention and control. In that context, the aim of this study was to analyze the distribution of human cases of leptospirosis in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, and to explore possible drivers. Additionally, it sought to provide further evidence to support interventions and to identify hypotheses for new research at the human-animal-ecosystem interface. The risk for human infection was described in relation to environmental, socioeconomic, and livestock variables. This ecological study used aggregated data by municipality (all 496). Data were extracted from secondary, publicly available sources. Thematic maps were constructed and univariate analysis performed for all variables. Negative binomial regression was used for multivariable statistical analysis of leptospirosis cases. An annual average of 428 human cases of leptospirosis was reported in the state from 2008 to 2012. The cumulative incidence in rural populations was eight times higher than in urban populations. Variables significantly associated with leptospirosis cases in the final model were: Parana/Paraiba ecoregion (RR: 2.25; CI95%: 2.03-2.49); Neossolo Litolítico soil (RR: 1.93; CI95%: 1.26-2.96); and, to a lesser extent, the production of tobacco (RR: 1.10; CI95%: 1.09-1.11) and rice (RR: 1.003; CI95%: 1.002-1.04). Urban cases were concentrated in the capital and rural cases in a specific ecoregion. The major drivers identified in this study were related to environmental and production processes that are permanent features of the state. This study contributes to the basic knowledge on leptospirosis distribution and drivers in the state and encourages a comprehensive approach to address the disease in the animal-human-ecosystem interface.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015GGG....16.1254R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015GGG....16.1254R"><span>Basalt volatile fluctuations during continental rifting: An example from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Rowe, Michael C.; Lassiter, John C.; Goff, Kathleen</p> <p>2015-05-01</p> <p>Hydration and metasomatism of the lithospheric mantle potentially influences both the magmatic and tectonic evolution of southwestern North America. Prior studies have suggested that volatile enrichments to the mantle underlying western North America resulted from shallow subduction of the Farallon Plate during the Laramide (˜74-40 Ma). This study examines temporal and spatial variations in volatile elements (H2O, Cl, F, and S) determined from olivine and orthopyroxene-hosted melt inclusions along and across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, the easternmost extent of Laramide shallow subduction. Maximum chlorine enrichments are observed in the southern rift with a Cl/Nb of ˜210 and reduce with time to MORB-OIB levels (˜5-17). Measured water abundances are <0.8 wt % in rehomogenized inclusions; however, calculated H2O, based on Cl/Nb systematics, primarily varies from 0.5 to 2 wt % H2O. Sulfur abundances (<0.61 wt %), and calculated sulfide saturation, indicate magmas with high Cl/Nb also contain oxidized sulfur. The abundance of fluorine in melt inclusions (up to 0.2 wt %) is not correlated to other volatile elements. Temporal variations in melt inclusion volatile abundances coupled with varying isotopic (Sr-Nd-Pb) whole-rock systematics suggest a transition from lithospheric to asthenospheric melt generation in the southern RGR and potential lithosphere-asthenosphere melt mixing in the central RGR. East to west decrease in volatile enrichment likely reflects a combination of varying mantle sources and early removal of metasomatized lithospheric mantle underlying regional extension. Results indicate, from multiple causes, subduction-related volatile enrichment to the lithospheric mantle is ephemeral, and strong enrichments in volatiles are not preserved in active magmatic-tectonic provenances.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3695603','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3695603"><span>Genetic Analysis of Captive Spawning Strategies for the Endangered <span class="hlt">Rio</span> <span class="hlt">Grande</span> Silvery Minnow</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p></p> <p>2013-01-01</p> <p>Captive breeding and rearing are central elements in conservation, management, and recovery planning for many endangered species including <span class="hlt">Rio</span> <span class="hlt">Grande</span> Silvery Minnow, a North American freshwater cyprinid. Traditionally, the sole purpose of hatcheries was to produce as many fish as feasible for stocking and harvest. Production quotas are also an important consideration in hatchery programs for endangered species, but they must also maintain and maximize genetic diversity of fish produced through implementation of best breeding practices. Here, we assessed genetic outcomes and measures of productivity (number of eggs and larval viability) for three replicates of three mating designs that are used for this small, pelagic-spawning fish. These were 1) monogamous mating, 2) hormone-induced communal spawning, and 3) environmentally cued communal spawning. A total of 180 broodstock and 450 progeny were genotyped. Genetic diversity and egg productivity did not differ significantly among spawning designs (H e: F = 0.52, P = 0.67; H o: F = 0.12, P = 0.89; number of eggs: F = 3.59, P = 0.09), and there was evidence for variance in reproductive success among individuals in all three designs. Allelic richness declined from the broodstock to progeny generation in all breeding designs. There was no significant difference in the genetic effective size (regardless of the method used) among designs. Significantly more viable eggs were produced in environmentally cued communal spawn compared to the alternative strategies (F = 5.72, P = 0.04), but this strategy is the most difficult to implement. PMID:23519867</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2000/ofr00-065/00-065.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2000/ofr00-065/00-065.pdf"><span>Creating a standardized watersheds database for the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Río Bravo, Texas</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Brown, J.R.; Ulery, Randy L.; Parcher, Jean W.</p> <p>2000-01-01</p> <p>This report describes the creation of a large-scale watershed database for the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Río Bravo Basin in Texas. The watershed database includes watersheds delineated to all 1:24,000-scale mapped stream confluences and other hydrologically significant points, selected watershed characteristics, and hydrologic derivative datasets.Computer technology allows generation of preliminary watershed boundaries in a fraction of the time needed for manual methods. This automated process reduces development time and results in quality improvements in watershed boundaries and characteristics. These data can then be compiled in a permanent database, eliminating the time-consuming step of data creation at the beginning of a project and providing a stable base dataset that can give users greater confidence when further subdividing watersheds.A standardized dataset of watershed characteristics is a valuable contribution to the understanding and management of natural resources. Vertical integration of the input datasets used to automatically generate watershed boundaries is crucial to the success of such an effort. The optimum situation would be to use the digital orthophoto quadrangles as the source of all the input datasets. While the hydrographic data from the digital line graphs can be revised to match the digital orthophoto quadrangles, hypsography data cannot be revised to match the digital orthophoto quadrangles. Revised hydrography from the digital orthophoto quadrangle should be used to create an updated digital elevation model that incorporates the stream channels as revised from the digital orthophoto quadrangle. Computer-generated, standardized watersheds that are vertically integrated with existing digital line graph hydrographic data will continue to be difficult to create until revisions can be made to existing source datasets. Until such time, manual editing will be necessary to make adjustments for man-made features and changes in the natural landscape</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28002614','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28002614"><span>Genetic progress in oat associated with fungicide use in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Follmann, D N; Cargnelutti Filho, A; Lúcio, A D; de Souza, V Q; Caraffa, M; Wartha, C A</p> <p>2016-12-19</p> <p>The State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (RS) is the largest producer of oat in Brazil with the aid of consolidated breeding programs, which are constantly releasing new cultivars. The main objectives of this study were to: 1) evaluate the annual genetic progress in grain yield and hectoliter weight of the oat cultivars in RS, with and without fungicide use on aerial parts of plants; and 2) evaluate the efficiency of oat breeding programs in introducing disease-resistant genes in the released cultivars through network yield trials conducted with and without fungicide use on aerial plant parts. The data on grain yield and hectoliter weight were obtained from 89 competition field trials of oat cultivars carried out from 2007 to 2014 in nine municipalities of RS. Of the total 89 trials, 44 were carried out with fungicide application on aerial plant parts and 45 were carried out without fungicide application. The annual genetic progress in oat cultivars was studied using the methodology proposed by Vencovsky (1988). The annual genetic progress in oat grain yield was 1.02% with fungicide use and 4.02% without fungicide use during the eight-year study period in RS. The annual genetic progress with respect to the hectoliter weight was 0.08% for trials with fungicide use and 0.71% for trials without fungicide use. Performing network yield trials with and without fungicide use on the aerial plants parts is a feasible method to evaluate the efficiency of oat breeding programs in introducing disease-resistant genes in the released cultivars.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.T51E2962B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.T51E2962B"><span>Gravity and Seismic Investigations of the Northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Biehler, S.; Braile, L. W.; Harper, C.; Bartz, R.; Donnelly, W.; Haga, L.; Keithline, N.; McBride, K.; Miller, D.; Oberle, J.; Wahl, J.; Castrejon-Martinez, R.; Lee, R. F.; Saez Berrios, P.; Ferguson, J. F.; Baldridge, W. S.</p> <p>2015-12-01</p> <p>Participants in the Summer of Applied Geophysical Experience (SAGE) program have collected gravity data at over 7000 locations in the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift (RGR) area of New Mexico in the past thirty-three years. In recent years, the SAGE program has focused on the western edge of the Española basin and the transition into the Santo Domingo basin of the RGR. During this time, we have collected about 40 km of seismic reflection and refraction data along approximately East-West profiles using a 120 channel data acquisition system with a 20 m station interval and a Vibroseis source. Refraction travel time modeling and Common Midpoint (CMP) stacked reflection sections have imaged basin boundary faults and stratigraphy. We also have access to several energy-industry seismic reflection record sections from the 1970s in the study area. These data and some deep drill hole information have allowed detailed interpretation of basin structures along segments of three regional transects across the RGR in northern New Mexico. The interpreted seismic velocities and fault images from the seismic record sections, and lithologies and well logs from drill holes, have also provided important constraints on modeling and interpretation of the regional gravity data along the three transects. The gravity modeling along these transects reveals key structures within the basin including the eastern bounding fault of the Los Alamos graben, eastern boundary faults of the Santo Domingo basin, the Agua Fria fault system near the eastern boundary of the Española basin and interpreted depths to basement of the Española and Santo Domingo basins. Boundary fault offsets are as large as 3 km and maximum basin depths range from 3 to 6 km.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/1003879','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/1003879"><span>Hematozoan parasites of <span class="hlt">Rio</span> <span class="hlt">Grande</span> wild turkeys from southern Texas (USA)</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Castle, Marc D.; Christensen, Beth A.; Rocke, Tonie E.</p> <p>1988-01-01</p> <p>One hundred twenty-three of 300 blood samples (41%) taken from <span class="hlt">Rio</span> <span class="hlt">Grande</span> wild turkeys (Meleagris gallopavo intermedia) from three locations in southern Texas (Welder Wildlife Refuge, Chaparrosa Ranch, and Campo Alegre Ranch) and subinoculated into domestic broad-breasted white turkey poults were positive for a Plasmodium (Novyella) sp. Analysis of blood films from 350 turkeys revealed Haemoproteus meleagridis in 76% of the birds. A significantly greater mean parasite intensity was observed in birds from Welder Wildlife Refuge. Birds from the Campo Alegre Ranch exhibited a significantly higher prevalence of H. meleagridis than birds from Chaparrosa. The Plasmodium sp. was infective for canaries (Serinus canaria), bobwhites (Colinus virginianus), and ring-necked pheasants (Phasianus colchicus), but would not produce infection in white leghorn chickens (Gallus gallus) or Coturnix quail (Coturnix coturnix). Attempts to infect Culex tarsalis and C. pipiens pipiens were unsuccessful. Asexual erythrocytic synchrony was not observed when blood-induced infections were monitored in two domestic turkey poults every 4 hr for 72 hr. Exoerythrocytic stages were not found upon examination of impression smears and tissue samples taken from brain, liver, spleen, kidney, lung, and bone marrow. The Plasmodium sp. is most similar morphologically to three species in the subgenus Novyella, P. hexamerium, P. vaughani, and P. kempi. The most striking similarities are to P. hexamerium, and involve mean merozoite number, erythrocytic schizont location, and vertebrate host susceptibility. It differs from P. vaughani in being able to infect turkeys and in type of parasitized erythrocytes. Differences to P. kempi include mean merozoite number, and ability to infect pheasants, and its inability to develop inC. pipiens and C. tarsalis.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011AGUFMIN33C1478C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011AGUFMIN33C1478C"><span>A Regional Geothermal Assessment of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift: All Data Are Not Created Equal</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Chapman, D. S.; D'Alfonso, D.; Hardwick, C.; Hollingshaus, B.; Kordy, M. A.; Shurtleff, R.; Smith, K.; Smith, S.</p> <p>2011-12-01</p> <p>In response to growing interest in geothermal energy, the University of Utah enrolled 22 geoscience and engineering students in a fall semester 2010 course "Geothermal Systems for Geoscientists." Seven of those students continued in a spring semester seminar, sponsored by NREL (National Renewable Energy Laboratory), to create a case study on the geothermal potential of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift. The assessment, grounded in informatics, began with a complete inventory of all printed and web resources for the region. ArcMAP was used to create a suitable base map and, through extensive data mining, to spatially correlate relevant demographic, infrastructure, and geothermal datasets. Of the more than 40 spatial data overlays available, we determined the following data to be most useful in making a geothermal assessment: (1) heat flow measurements, (2) geochemistry of spring and well waters, (3) geologic mapping focused on young volcanics and intrusives, and (4) regional and local hydrology. Infrastructure (power plant, power line, population centers, and highway locations) became important only after the geothermal resource was identified. We identified four potential geothermal reservoir sites, two of which were chosen for detailed reservoir quantification and geothermal development plans. Thermal energy in each reservoir was calculated and compared to results computed with the software package GEOFRAT. The Mt. Princeton site is considered as an example of a high temperature reservoir suitable for binary plant power generation. The power potential for a 30-year use is estimated to be 8.5 MWelectric. The second system is more appropriate for direct heat application. Land-use regulations limit access for geothermal development of the Valles Caldera system to an extensive low temperature reservoir in Jemez Springs estimated at 1.1 GWthermal. In developing geothermal case studies, this student driven project has demonstrated the importance of both (a) using geothermal science</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4336142','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4336142"><span>Prevalence and Correlates of Physical Inactivity among Older Adults in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Souza, Adelle M. R.; Fillenbaum, Gerda G.; Blay, Sergio L.</p> <p>2015-01-01</p> <p>Background Current information on the epidemiology of physical inactivity among older adults is lacking, making it difficult to target the inactive and to plan for interventions to ameliorate adverse effects. Objectives To present statewide representative findings on the prevalence of physical inactivity among older community residents, its correlates and associated health service use. Methods A representative non-institutionalized random sample of 6963 individuals in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, aged ≥60 years, was interviewed face-to-face. Information was obtained on demographic characteristics, social resources, health conditions and behaviors, health service use, and physical inactivity. Controlled logistic regression was used to determine the association of physical inactivity with these characteristics. Results Overall, 62% reported no regular physical activity. Physical inactivity was significantly more prevalent among women, older persons, those with lower education and income, Afro-Brazilians (73%; White: 61%; “other”: 64%), those no longer married, and was associated with multiple individual health conditions and impaired activities of daily living (ADL). In adjusted analyses, associations remained for sociodemographic characteristics, social participation, impaired self-rated health, ADL, vision, and depression (odds ratios (OR) 1.2–1.7). Physically inactive respondents were less likely to report outpatient visits (OR 0.81), but more likely to be hospitalized (OR 1.41). Conclusions Physical inactivity is highly prevalent, particularly among Afro -Brazilians. It is associated with adverse sociodemographic characteristics; lack of social interaction; and poor self-rated health, ADL, vision, and depression; although not with other health conditions. Self-care may be neglected, resulting in hospitalization. PMID:25700161</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5308555','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5308555"><span>Products purchased from family farming for school meals in the cities of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Ferigollo, Daniele; Kirsten, Vanessa Ramos; Heckler, Dienifer; Figueredo, Oscar Agustín Torres; Perez-Cassarino, Julian; Triches, Rozane Márcia</p> <p>2017-01-01</p> <p>ABSTRACT OBJECTIVE This study aims to verify the adequacy profile of the cities of the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, in relation to the purchase of products of family farming by the Programa Nacional de Alimentação Escolar (PNAE - National Program of School Meals). METHODS This is a quantitative descriptive study, with secondary data analysis (public calls-to-bid). The sample consisted of approximately 10% (n = 52) of the cities in the State, establishing a representation by mesoregion and size of the population. We have assessed the percentage of food purchased from family farming, as well as the type of product, requirements of frequency, delivery points, and presence of prices in 114 notices of public calls-to-bid, in 2013. RESULTS Of the cities analyzed, 71.2% (n = 37) reached 30% of food purchased from family farming. Most public calls-to-bid demanded both products of plant (90.4%; n = 103) and animal origin (79.8%; n = 91). Regarding the degree of processing, fresh products appeared in 92.1% (n = 105) of the public calls-to-bid. In relation to the delivery of products, centralized (49.1%; n = 56) and weekly deliveries (47.4%; n = 54) were the most described. Only 60% (n = 68) of the public calls-to-bid contained the price of products. CONCLUSIONS Most of the cities analyzed have fulfilled what is determined by the legislation of the PNAE. We have found in the public calls-to-bid a wide variety of food, both of plant and animal origin, and most of it is fresh. In relation to the delivery of the products, the centralized and weekly options prevailed. PMID:28225910</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2000/ofr00-473/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2000/ofr00-473/"><span>Characterization of stormwater discharges from Las Flores Industrial Park, <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Puerto Rico, 1998-99</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Rodriguez, Jose M.</p> <p>2000-01-01</p> <p>Stormwater discharges from Las Flores Industrial Park, <span class="hlt">Rio</span> <span class="hlt">Grande</span>, Puerto Rico, were characterized from June 1998 to July 1999 by measuring the flow rate at two outfalls, delineating the drainage areas for each outfall, and calculating the volume of the stormwater discharges. Stormwater-discharge samples were collected and analyzed to determine the quality of the discharges. Constituent loads and loads per area were estimated for each drainage area. The studied drainage subareas covered approximately 46 percent of the total area of the Las Flores Industrial Park. Industrial groups represented in the study areas include manufacturers of textile, electronics, paper, fabricated metal, plastic, and chemical products. The concentrations of oil and grease (1 to 6 milligrams per liter), biochemical oxygen demand (4.7 to 16 milligrams per liter), total organic carbon (5.8 to 36 milligrams per liter), total suspended solids (28 to 100 milligrams per liter), and total phosphorous (0.11 to 0.78 milligrams per liter) from all the samples collected were less than the U.S. Environmental Protection Agency stormwater benchmark concentrations. Concentrations of chemical oxygen demand (15.8 to 157 milligrams per liter) and nitrate and nitrite (0.06 to 1.75 milligrams per liter) exceeded benchmark concentrations at one of the studied drainage areas. Total Kjeldahl nitrogen concentrations (1.00 to 3.20 milligrams per liter) exceeded the benchmark concentrations at the two studied drainage areas. Maximum concentrations for oil and grease, biochemical oxygen demand, chemical oxygen demand, total organic carbon, total Kjeldahl nitrogen, nitrate plus nitrite, and total phosphorous were detected in an area where electronics, plastics, and chemical products are currently manufactured. The maximum concentration of total suspended solids was detected at an area where textile, paper, plastic, chemical, and fabricated metal products are manufactured.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/20877985','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/20877985"><span>Galling arthropod diversity in adjacent swamp forests and restinga vegetation in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mendonça, Milton De S; Piccardi, Hosana M F; Jahnke, Simone M; Dalbem, Ricardo V</p> <p>2010-01-01</p> <p>Galling arthropods create plant structures inside which they find shelter. Factors acting on galler diversity are still being discussed, with this fauna considered more diverse in xeric than mesic environments (higrothermic stress hypothesis, HSH), and also in more plant diverse sites. Here we compare galler abundance (N), equitability (E), species richness (S) and composition between adjacent restinga (xeric) and swamp forests (mesic) in Parque Estadual de Itapeva (29°21' S, 49°45' W), <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, southern Brazil. Five trails, two in swamp forest and three in restingas, were sampled four times each (January/December 2005). After an effort of 60h/person, 621 galled plant individuals belonging to 104 gall morphotypes were recorded. This suggests a high galler diversity for the Park, comparable to the richest places known. No differences were found for N, E or S between restingas and swamp forests. However, faunal composition differs significantly between the vegetation types. The dominant (most abundant) species are different in either vegetation type, and are rare or absent on the other vegetation type. Such species composition analysis is still largely ignored for gallers, and stresses the fact that the HSH cannot explain this pattern, since the latter is based on preferences by the ovipositing galler for xeric sites instead of mesic ones. The two habitats differ in microclimate, but species richness, as would be predicted by the HSH, does not differ. This small scale pattern can perhaps be attributed to biogeographic processes on larger scales, as suggested by the resource synchronisation hypothesis.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3910180','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3910180"><span>Salmonelloses in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, southern Brazil, 2002 to 2004</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Wagner, Vanessa Rech; Silveira, Josete Baialardi; Tondo, Eduardo Cesar</p> <p>2013-01-01</p> <p>Salmonella has been identified as the main aetiological agent responsible for foodborne diseases in several countries worldwide, including Brazil. In the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (RS), southern Brazil, previews studies analysed official foodborne illnesses data, identifying Salmonella as the main bacterial agent of foodborne diseases during the period of 1997 to 2001. The present study aimed to analyse the official epidemiological data on salmonelloses occurred in the State of RS, during the period of 2002 to 2004. Even though data on recent salmonelloses were available, only data concerning the period comprising in 2002 to 2004 were analysed because the official worksheet records presented more consistent information about the salmonellosis outbreaks. Results indicated that, among the 624 foodborne outbreaks officially investigated, 202 (32.37%) were confirmed as salmonellosis. Among them 23,725 people were involved, 4,148 became sick, 1,878 were hospitalized and one person died. The season with the highest incidence of salmonelloses was spring, and the most affected age group was composed of people aged between 20 to 49 years old (56.66%). Animal origin foods - especially eggs and meat products - were very often involved with the outbreaks, however homemade mayonnaise was identified as the main food vehicle for salmonelloses (53.51%). The majority of the cases occurred inside private homes (55.81%) and food services (12.1%), and the main factors contributing to the occurrence of the outbreaks were the consumption of products without sanitary inspection (26.7%) and exposure of food at room temperature for more than two hours (18.58%). Similarly to what was previously reported for the period of 1997 to 2001, Salmonella spp. was the most prevalent foodborne disease agent in the State of RS during the years of 2002 to 2004. PMID:24516439</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6621265','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6621265"><span>Energy from renewable sources for rural communities of the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> Do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bristotti, A.; Sadhu, D.</p> <p>1983-12-01</p> <p>Rural communities of the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul developed on the basis of various ethenic origin, and distinctly took root in the regions of different topography. On the south and the west nearly half of the state is mainly flat land, where the inhabitants are racially heterogenous and live pricipally in small towns with large farm lands around. The rest of the state consists of high lands that gradually rise from the northwest to maximum 1200m altitude at the northeast. In the foothills, industrial base was developed by the German settelers, whereas the Italian immigrants settled on the hills. The hilly region is composed of small rural properties with area varying from 10 to 50 hectares. They are scattered all over the region, which make it economically unfeasable to distribute electricity from the main grid, due to high investment cost unlikely to be paid off by the energy consumption rate of the rural properietors. It could be verified from the fact that till to-date the local federation of the cooperatives of rural electrification achieved to supply electricity to only 15% of the total area and its future expansion is getting limited. This paper describes a pilot project initiated in the county 'Tres Coroa' of this region, that is being developed under the guidance of the energy group of the Federal University of RGS, coordinated with balanced technical, agronomical, economical and ecilogical activities to meet its energy demand, that could be supplied with the locally available resources. It is aimed in this project to provide the rural habitants adequate energy for a decent living i.e., electricity for lights, TV and small domestic appliances, thermal energy for hot water supply and fuel to run the agricultural machineries. In future, other nearby counties could follow this experiment with proper and adequate modifications to suite the need and the type of resources available there.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/20563799','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/20563799"><span>Impact of metals on macroinvertebrate assemblages in the Forgotten Stretch of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ordonez, Catalina; Lougheed, Vanessa L; Gardea-Torresdey, Jorge L; Bain, Lisa J</p> <p>2011-04-01</p> <p>The objective of this study was to examine how changes in the benthic macroinvertebrate community structure and a variety of abiotic variables, such as conductivity and sediment metal concentrations, are modified along the Forgotten River stretch of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. This stretch receives industrial effluent, raw sewage, and agricultural return flow from the El Paso (TX, USA)-Ciudad Juárez (CHI, Mexico) metroplex and then flows relatively undisturbed for 320 km before its next significant input. The high degree of use, followed by the 320-km undisturbed stretch, makes the Forgotten River a unique study site to examine downstream attenuation of contaminants and other abiotic variables to determine their potential effects on macroinvertebrates. Five different sites along the Forgotten Stretch were sampled over a 2-year period. Metal concentrations were low throughout the stretch and were predominantly correlated to percent sediment organic matter rather than explained spatially. Several sensitive invertebrate species, such as Leptophlebiidae, increased in relative abundance downstream, whereas the percentage of tolerant invertebrates decreased. Nonmetric multidimensional scaling separated the macroinvertebrate communities upstream from those downstream, with the more sensitive species being found predominantly downstream and more tolerant taxa associated upstream. Additionally, there was a distinct seasonal gradient to the community. The most important drivers of the community assemblage appear to be distance downstream and seasonality, as well as water conductivity and concentrations of sediment cadmium, which was the only metal that exceeded protective criteria. This study did not provide evidence of the downstream attenuation of heavy metals in the sediments in the Forgotten Stretch; however, downstream changes in macroinvertebrates toward more sensitive taxa suggests that other, unmeasured contaminants might be affecting biological communities in this isolated</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015PhDT.......180P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015PhDT.......180P"><span>River management impacts on riparian forest vegetation along the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>: 1935-2014</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Petrakis, Roy E.</p> <p></p> <p>Riparian ecosystems of the southwestern United States are highly valuable to both the ecological and human communities which surround them. Over the past century, they have been subject to shifting management practices to maximize human use, control, ecosystem service, and conservation. This creates a complex relationship between water policy, management, and the natural ecosystem necessitating research on spatial and temporal dynamics of riparian vegetation. The San Acacia Reach of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, a 60 mile stretch from the San Acacia Diversion Dam to San Marcial, has experienced multiple management and river flow fluctuations over the past 80 years, resulting in threats to riparian and aquatic ecosystems. This research was completed through the use and analysis of multi-source remote sensing data, GIS, and a review of the on-the-ground management decisions to better understand how the location and composition of the riparian vegetation has been affected by these shifting practices. This research focused on four phases, each highlighting different management practices and river flow patterns during the last 80-years. Each of these periods provides a unique opportunity to observe a direct relationship between river management and riparian land cover response and change. Overall, management practices reduced surface river flows and limited overbank flooding and resulted in changes in the composition, density, and spatial patterns of the vegetation, including increased non-native vegetation growth. Restoration efforts over the past few decades have begun to reduce the presence of non-native species. Despite these changes, this ecosystem was shown to be extremely resilient in maintaining its function/service throughout the entire study time frame.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUSM.H41A..02H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUSM.H41A..02H"><span>The Effect of Human Borders on Water Dynamics in an Arid Region: A Regional Research Overview of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande/Rio</span> Bravo Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Heyman, J.</p> <p>2013-05-01</p> <p>International and internal borders transect surface and subsurface waters. Such boundaries add complexity to already complicated biophysical and human use trade-offs and interactions between surface and subsurface waters. The surface-subsurface interactions are shaped by a combination of climate change, human community change, and politics and governance decisions. Understanding such dynamics are crucial due to the importance of these waters in arid regions around the world, often affected by borders. This paper provides an overview of the interacting systems involving and affecting surface and subsurface water in the middle <span class="hlt">Rio</span> <span class="hlt">Grande/Rio</span> Bravo basin of the United States and Mexico, and the emerging binational research network examining these dynamics. While details are specific to the region, many issues and relationships are generalizable to the Americas and the world.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_20 --> <div id="page_21" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="401"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011Geomo.126..333D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011Geomo.126..333D"><span>The role of feedback mechanisms in historic channel changes of the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Big Bend region</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dean, David J.; Schmidt, John C.</p> <p>2011-03-01</p> <p>Over the last century, large-scale water development of the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the U.S. and Mexico, and of the <span class="hlt">Rio</span> Conchos in Mexico, has resulted in progressive channel narrowing of the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Big Bend region. We used methods operating at multiple spatial and temporal scales to analyze the rate, magnitude, and processes responsible for channel narrowing. These methods included: hydrologic analysis of historic stream gage data, analysis of notes of measured discharges, historic oblique and aerial photograph analysis, and stratigraphic and dendrogeomorphic analysis of inset floodplain deposits. Our analyses indicate that frequent large floods between 1900 and the mid-1940s acted as a negative feedback mechanism and maintained a wide, sandy, multi-threaded river. Declines in mean and peak flow in the mid-1940s resulted in progressive channel narrowing. Channel narrowing has been temporarily interrupted by occasional large floods that widened the channel, however, channel narrowing has always resumed. After large floods in 1990 and 1991, the active channel width of the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> has narrowed by 36-52%. Narrowing has occurred by the vertical accretion of fine-grained deposits on top of sand and gravel bars, inset within natural levees. Channel narrowing by vertical accretion occurred simultaneously with a rapid invasion of non-native riparian vegetation ( Tamarix spp., Arundo donax) which created a positive feedback and exacerbated the processes of channel narrowing and vertical accretion. In two floodplain trenches, we measured 2.75 and 3.5 m of vertical accretion between 1993 and 2008. In some localities, nearly 90% of bare, active channel bars were converted to vegetated floodplain during the same period. Upward shifts of stage-discharge relations occurred resulting in over-bank flooding at lower discharges, and continued vertical accretion despite a progressive reduction in stream flow. Thus, although the magnitude of the average annual</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70016222','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70016222"><span>Using 222Rn to examine groundwater/surface discharge interaction in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Manati, Puerto Rico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ellins, K.K.; Roman-Mas, A.; Lee, R.</p> <p>1990-01-01</p> <p>222Rn was used in the karst drainage basin of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Manati in Puerto Rico to study groundwater/surface flow relationships. Locations of groundwater influx along two sections of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Manati were identified. The 222Rn measurements were used together with stream discharge data in a mass balance equation to quantify the groundwater inputs. The investigation established that both of the sections of the <span class="hlt">Rio</span> Manati surveyed not only gained groundwater, but lost surface flow. It was calculated that the river gained about 1.2m3s-1 and lost 0.5m3s-1 to the aquifer between Ciales and United States Geological Survey gauging station 5. Between United States Geological Survey gauging stations 6 and 7, groundwater influx and stream flow loss occurred simultaneously with groundwater inputs equalling surface discharge losses of 4m3s-1. The study successfully demonstrated the innovative application of 222Rn as a geochemical tracer in examining groundwater/surface flow relationships in a karst system. ?? 1990.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70026771','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70026771"><span>Seasonal changes in 17-ß estradiol of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Chub (Gila pandora) in south-central New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Caldwell, Colleen A.; Fuller, S. Adam; Gould, William R.; Turner, Paul R.; Hallford, Dennis M.</p> <p>2004-01-01</p> <p>Timing of gametogensis and thus spawning can be inferred through changes in plasma concentrations of gonadal hormones. In preparation for ovulation and spawning, mean concentrations of 17ß-estradiol in a population of <span class="hlt">Rio</span> <span class="hlt">Grande</span> chub (Gila pandora) occupying the <span class="hlt">Rio</span> Bonito, New Mexico, peaked at 37.6 ng/mL on 16 June and declined to 1.50 ng/mL by 11 August. Similarly, the gonadal somatic index (GSI) increased from 9.02 on 21 May (n = 9) to 11.85 on 16 June (n = 2) and declined to 6.10 on 11 August (n = 2). Peak concentrations of 17ß-estradiol and elevated GSI in June coincided with peak daylength for the year (14 h and 12 min) and average water temperature of 15.1°C. Concentrations of 17ß-estradiol remained low through 3 October indicating no additional spawning events in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> chub population. We demonstrated 17ß-estradiol is a nondestructive and thus useful tool in estimating timing of spawning in a wild fish population.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007AGUFM.H41K..06D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007AGUFM.H41K..06D"><span>Trace Perchlorate in Background Ground Water and Local Precipitation, Northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dale, M.; Longmire, P.; Granzow, K. P.; Englert, D.; Yanicak, S.; Larson, T.; Rearick, M.; Heikoop, J.; Perkins, G.</p> <p>2007-12-01</p> <p>Perchlorate occurs at detectable concentrations of 0.07 to 0.45 parts per billion (ppb) in ground water of background quality within the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin, New Mexico. Ground-water samples were collected from 47 wells and springs near Los Alamos, Santa Fe, and Taos, New Mexico. Analytical methods consisted of liquid and ion chromatography-mass spectrometry mass spectrometry (LC/MS/MS and IC/MS/MS). An upper tolerance limit (mean plus two standard deviations) of 0.40 ppb was calculated from 184 analytical results for the background samples. Six distinguishable ground-water zones were sampled based on location, age, and hydrochemistry. In the Los Alamos area, ground water within the mountain-front and mountain-block region is mostly young or modern (less than 50 years). The regional aquifer including the White Rock Canyon springs are of sub-modern age (greater than 50 years). Tritium data from springs north of Taos indicate ground water of modern and sub-modern ages. Background perchlorate concentrations within the Los Alamos area were consistently higher than those measured in the Taos area. Ground water from the Taos area contains less perchlorate and has lower δ18O and δ2H values than ground water from the Los Alamos area. The elevation at which precipitation occurs with respect to recharge and/or the amount of evapotranspiration may play a role in perchlorate concentration in ground water. Natural variability, hydrogeology, and atmospheric inputs may also affect perchlorate concentration in ground water. A linear regression through perchlorate and chloride concentrations for all stations resulted in an r2 = 0. However, the r2 value of the Los Alamos regional aquifer for perchlorate versus chloride was 0.66. Thirteen precipitation samples were collected in the Los Alamos area. Results from eleven of these samples showed no perchlorate greater than 0.05 and 0.009 ppb, the method detection limit (MDL). Two precipitation samples analyzed using the IC</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AGUFM.H53C1707S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AGUFM.H53C1707S"><span>Variable exchange between a stream and an aquifer in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Project Area</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sheng, Z.; Abudu, S.; Michelsen, A.; King, P.</p> <p>2016-12-01</p> <p>Both surface water and groundwater in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Project area in southern New Mexico and Far West Texas have been stressed by natural conditions such as droughts and human activities, including urban development and agricultural irrigation. In some area pumping stress in the aquifer becomes so great that it depletes the river flow especially during the irrigation season, typically from March through October. Therefore understanding such relationship between surface water and groundwater becomes more important in regional water resources planning and management. In this area, stream flows are highly regulated by the upstream reservoirs during the irrigation season and greatly influenced by return flows during non-irrigation season. During a drought additional groundwater pumping to supplement surface water shortage further complicates the surface water and groundwater interaction. In this paper the authors will use observation data and results of numerical models (MODFLOW) to characterize and quantify hydrological exchange fluxes between groundwater in the aquifers and surface water as well as impacts of groundwater pumping. The interaction shows a very interesting seasonal variation (irrigation vs. non-irrigation) as well as impact of a drought. Groundwater has been pumped for both municipal supplies and agricultural irrigation, which has imposed stresses toward both stream flows and aquifer storage. The results clearly show that historic groundwater pumping has caused some reaches of the river change from gaining stream to losing stream. Beyond the exchange between surface water and groundwater in the shallow aquifer, groundwater pumping in a deep aquifer could also enhance the exchanges between different aquifers through leaky confining layers. In the earlier history of pumping, pumping from the shallow aquifer is compensated by simple depletion of surface water, while deep aquifer tends to use the aquifer storage. With continued pumping, the cumulative</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4643048','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4643048"><span>Leptospirosis in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil: An Ecosystem Approach in the Animal-Human Interface</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Schneider, Maria Cristina; Najera, Patricia; Pereira, Martha M.; Machado, Gustavo; dos Anjos, Celso B.; Rodrigues, Rogério O.; Cavagni, Gabriela M.; Muñoz-Zanzi, Claudia; Corbellini, Luis G.; Leone, Mariana; Buss, Daniel F.; Aldighieri, Sylvain; Espinal, Marcos A.</p> <p>2015-01-01</p> <p>Background Leptospirosis is an epidemic-prone neglected disease that affects humans and animals, mostly in vulnerable populations. The One Health approach is a recommended strategy to identify drivers of the disease and plan for its prevention and control. In that context, the aim of this study was to analyze the distribution of human cases of leptospirosis in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, and to explore possible drivers. Additionally, it sought to provide further evidence to support interventions and to identify hypotheses for new research at the human-animal-ecosystem interface. Methodology and findings The risk for human infection was described in relation to environmental, socioeconomic, and livestock variables. This ecological study used aggregated data by municipality (all 496). Data were extracted from secondary, publicly available sources. Thematic maps were constructed and univariate analysis performed for all variables. Negative binomial regression was used for multivariable statistical analysis of leptospirosis cases. An annual average of 428 human cases of leptospirosis was reported in the state from 2008 to 2012. The cumulative incidence in rural populations was eight times higher than in urban populations. Variables significantly associated with leptospirosis cases in the final model were: Parana/Paraiba ecoregion (RR: 2.25; CI95%: 2.03–2.49); Neossolo Litolítico soil (RR: 1.93; CI95%: 1.26–2.96); and, to a lesser extent, the production of tobacco (RR: 1.10; CI95%: 1.09–1.11) and rice (RR: 1.003; CI95%: 1.002–1.04). Conclusion Urban cases were concentrated in the capital and rural cases in a specific ecoregion. The major drivers identified in this study were related to environmental and production processes that are permanent features of the state. This study contributes to the basic knowledge on leptospirosis distribution and drivers in the state and encourages a comprehensive approach to address the disease in the animal</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2006AGUFM.H43H..02E','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2006AGUFM.H43H..02E"><span>The Evolution of Riparian Landscape Elements Following Upstream Regulation and Depletion on the <span class="hlt">Rio</span> <span class="hlt">Grande</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Everitt, B. L.</p> <p>2006-12-01</p> <p>In 1915 closure of Elephant Butte Dam in central New Mexico profoundly altered the hydrologic regime of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for 560 km downstream, and set in motion a cascade of interwoven geomorphic, biological, and cultural responses. Geomorphic response included shrinking of the width and depth of the channel, and an increase in sinuosity. Cultural responses included artificial channel modification on 320 km of the river within the boundaries of the original irrigation project, beginning in 1933. The pre-dam river and its flood plain consisted of a mosaic of geomorphic elements that formed a functional riverine landscape, and founded a diverse habitat for the plants, animals, and people that lived there. A preliminary comparison of the modern river with pre-dam topographic mapping permits identification of individual landscape elements, including overflow land (flood plain) both cultivated and uncultivated, with oxbows and back-swamps. The pre-dam channel included a low water thread and un-vegetated flood bars. From pre-dam description and photographs we can assume the usual complement of pools and riffles, point bars and undercut banks. Until dredged in the 1970s, the unmodified reach retained the entire suite of landscape elements, although in somewhat different proportions from the pre-dam river, and remained a functional riparian system. Channel sinuosity increased from 1.45 in 1910 to 1.7 in 1970, thus riverbank habitat increased by 1.17%. In 1970 undercut banks still provided protection for fish, and point bars generated by lateral migration still provided seed beds for pioneer species. The smaller shallower channel raised groundwater beneath the flood plain and retarded flood waves, creating a generally more mesic environment, although the river occasionally dries up, as it did prior to 1915. In contrast, an impoverished suite of landscape elements characterizes the channelized reach. Lateral stability precludes point bars and undercut banks. Bounding levees</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1986JGR....91.6246K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1986JGR....91.6246K"><span>Late Cretaceous to middle Tertiary tectonic history of the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kelley, Shari A.; Duncan, Ian J.</p> <p>1986-05-01</p> <p>Apatite fission track ages for samples collected from three mountain ranges on the eastern margin of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift are used to examine the late Cretaceous to middle Miocene uplift and erosional history of north central New Mexico. The dates indicate that uplift and erosion was in progress in the Sandia Mountains near Albuquerque and in the Taos Range portion of the Sangre de Cristo Mountains near Taos at least 30-35 m.y. ago. Uplift and erosion continued in the Sandia Mountains at a relatively constant rate (81 m/m.y.) until 15 Ma; the rate of uplift and erosion in this area has approximately tripled in the past 15 m.y. (230 m/m.y.). Igneous activity in the Taos Range has largely obscured the early Tertiary uplift and erosional history of this portion of the Sangre de Cristo Mountains. A fission track date from one of the middle Tertiary intrusions in the Taos Range is used to calculate the cooling rate due to uplift and erosion in this area for the past 14 m.y. (210 m/m.y.). The uplift and erosion rates derived from the fission track data for the past 14-15 m.y. are similar to those obtained from other geological evidence. In contrast to the Oligocene to Miocene ages found in the other two areas, the apatite fission track ages from the Santa Fe Range portion of the Sangre de Cristo Mountains near Santa Fe are Late Cretaceous to early Eocene. These dates record the cooling of the area due to uplift and erosion during the Laramide event. The preservation of these older ages indicates that the Santa Fe Range was a low-lying area during the Oligocene to Miocene, while the surrounding areas (Sandia Mountains and Taos Range) underwent uplift and erosion. Volcanic activity occurred in the vicinity of the two areas of positive relief. Localized crustal extension associated with the volcanism may have contributed, in part, to the uplift of these areas. Using simple, two-dimensional thermal models, we found that the apparent denudation rates derived from the fission</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUFMED13B0774G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUFMED13B0774G"><span>Cooperation on Climate Services in the Binational <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Bravo Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Garfin, G. M.; Shafer, M. A.; Brown, D. P.</p> <p>2013-12-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Bravo River Basin (RGB) of the United States and México is exposed to tornadoes, severe storms, hurricanes, winter storms, wildfire, and drought. The combination of these weather and climate-related hazards has resulted in impacts, such as wildfire, crop loss, water supply reduction, and flooding, with exceedingly high economic costs ($13 billion in 2011). In order to contribute to increased binational information flow and knowledge exchange in the region, we have developed a prototype quarterly bilingual RGB Climate Outlook, in PDF, supplemented by Twitter messages and Facebook posts. The goal of the project is to improve coordination between institutions in the U.S. and Mexico, increase awareness about climate variations, their impacts and costs to society, and build capacity for enhanced hazard preparedness. The RGB Outlook features a synthesis of climate products, impact data and analysis, is expressed in user-friendly language, and relies substantially on visual communication in contrast to text. The RGB Outlook is co-produced with colleagues in the U.S. and Mexico, in conjunction with the North American Climate Services Partnership (NACSP) and NOAA's regional climate services program. NACSP is a tri-national initiative to develop and deliver drought-based climate services in order to assist water resource managers, agricultural interests, and other constituents as they prepare for future drought events and build capacity to respond to other climate extremes. The RGB Climate Outlook builds on lessons learned from the Climate Assessment for the Southwest (CLIMAS) Southwest Climate Outlook (PDF, html), La Niña Drought Tracker (PDF, html), the Southern Climate Impacts Policy Program (SCIPP) Managing Drought in the Southern Plains webinar series, the Border Climate Summary (PDF), and Transborder Climate newsletter (PDF) and webinar series. The latter two have been the only regularly occurring bilingual climate information products in the U</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012E%26PSL.355...82B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012E%26PSL.355...82B"><span>Evidence from mantle xenoliths for lithosphere removal beneath the central <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Byerly, Benjamin L.; Lassiter, John C.</p> <p>2012-11-01</p> <p>Seismic tomography beneath the Central <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift (RGR) at ˜34°N shows a low P and S wave velocity zone in the mantle that extends up the base of the Moho. This low-velocity region has been interpreted by (Gao et al., 2004) to be the result of convective removal of a portion of the once >100 km thick Proterozoic lithosphere. The amount of extension in the central RGR is thought to be low (˜25%) and thus cannot account for the amount of lithosphere thinning suggested by seismic tomography. We measured whole rock and mineral major element, trace element, and isotopic compositions of spinel-peridotite xenoliths erupted along the central axis of the rift (Elephant Butte) and the eastern margin of the Colorado Plateau (Cerro Chato) to determine their depth of origin and mantle provenance and to test the delamination hypothesis. If lithosphere removal has not occurred and the low P and S wave velocities are instead the result of hydration or melt infiltration in the lithosphere, then xenoliths erupted on the rift axis should have geochemical compositions similar to Proterozoic sub-continental lithospheric mantle (SCLM). At Cerro Chato, on the margin of the Colorado Plateau, xenoliths were derived from ˜60 km depth and have geochemical signatures similar to Proterozoic sub-continental lithospheric mantle (e.g. refractory major element compositions, LREE-enrichment, enriched Sr and Nd isotopes, unradiogenic Os isotopes). At Elephant Butte, along the central rift axis, two distinct groups of xenoliths are present. The majority of xenoliths from Elephant Butte are LREE-depleted and have fertile major element compositions. Additionally, these xenoliths have isotopic signatures similar to the range for DMM (e.g. 87Sr/86Sr ranging from 0.7018 to 0.7023, ɛNd ranging from 7 to 21, and 187Os/188Os ranging from 0.122 to 0.130). We interpret this group of xenoliths to be derived from asthenospheric mantle. A less-abundant group of xenoliths at Elephant Butte are LREE</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://nmgs.nmt.edu/publications/guidebooks/62/','USGSPUBS'); return false;" href="https://nmgs.nmt.edu/publications/guidebooks/62/"><span>Geophysical expression of elements of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift in the northeast Tusas Mountains - Preliminary interpretations</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Drenth, Benjamin J.; Turner, Kenzie J.; Thompson, Ren A.; Grauch, V. J.; Cosca, Michael A.; Lee, John</p> <p>2011-01-01</p> <p>New interpretations of the nature of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift and pre-existing rocks in the northeast Tusas Mountains region are derived from new and existing gravity and aeromagnetic data. 12-15 mGal amplitude gravity lows are interpreted to mainly reflect large thicknesses of the upper Oligocene to upper Miocene, syn-rift Los Pinos Formation and possibly significant amounts of the Eocene El Rito Formation. The Broke Off Mountain sub basin, named after the location of its greatest inferred depth, is interpreted to be a ~40 km long and ~13 km wide structure elongated in a northwest trend at the western margin of the San Luis Basin. The sub basin is interpreted to contain a maximum combined thickness of 900-2300 m of the Los Pinos Formation and El Rito Formation, with the Los Pinos Formation constituting the majority of the section. Sub basin age is constrained to be older than 21.6 ± 1.4 Ma, the age of a Hinsdale Formation basalt flow that caps the Los Pinos Formation section at Broke Off Mountain. This age constraint and surface geology indicate a pre- and early-rift age. The structural fabric of the northeast Tusas Mountains region is dominated by northwest-trending normal faults, as indicated by geologic mapping and interpretation of aeromagnetic data. Preliminary analysis of the aeromagnetic data suggests that lineaments, possibly reflecting faulting, trend through volcanic rocks as young as Pliocene in age. If correct, these interpretations challenge commonly held beliefs regarding two stages in the structural style of rifting, where early (Oligocene-Miocene) rifting was characterized by broad, shallow basins bounded by northwest-trending faults and later (Miocene-Pliocene) rifting was characterized by deep, narrow basins bounded by north-trending faults. The Broke Off Mountain sub basin is a counter example of a pre- and early-rift, deep and narrow basin. We hypothesize that the Broke Off Mountain sub basin may represent a southward extension of the Monte Vista</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUFM.S23A2484B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUFM.S23A2484B"><span>Seismic and Gravity Investigations of the Western Espanola Basin, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Braile, L. W.; Coldren, B. G.; Baca, A.; Fontana, J.; Olheiser, M.; Ziff, M.; Keske, A.; Rhode, A.; Martin-Short, R.; Allen, W.; Denton, K. M.; Harper, C.; Baldridge, W.; Biehler, S.; Ferguson, J. F.; McPhee, D.; Snelson, C. M.</p> <p>2013-12-01</p> <p>The SAGE (Summer of Applied Geophysical Experience) program collected new seismic, gravity, electromagnetic and down-hole temperature data in 2013 in the western Espanola basin of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift area of northern New Mexico. The location, about 25 km NW of Santa Fe, has been identified as a potential geothermal resources area based on relatively high temperature gradients in drill holes. The SAGE 2013 data collection was part of an integrated geophysical study of the area initiated in 2011. Seismic data consisted of a 4.8 km W to E profile (120 three-component stations in four overlapping deployments, 20 m station spacing, using a Vibroseis source - 20 m spacing for reflection VPs; 800 m spacing for refraction VPs) with both refraction and CMP reflection coverage. About 55,000 seismograms were recorded. The surface conditions (dry unconsolidated sediments) increased surface wave energy and limited the signal-to-noise level of the refraction and reflection arrivals. Utilizing longer source-receiver offsets improved the shot-gather record sections by emphasizing wider angle reflections which are very strong and coherent. The refraction data were modeled with first arrival travel time methods. The reflection data were processed to produce a CMP stacked record section. Strong reflectors from basin-filling sedimentary rocks (mostly Tertiary in age) are visible above reflections from a thin section of Paleozoic rocks and the basement. The lower reflections have an apparent dip to the west of about 12 degrees. Eighty-one new gravity measurements (detailed data at 200 m spacing along the seismic profile, and regional stations) were collected and combined with existing regional data for modeling. Interpretation of the seismic and gravity data was aided by refraction velocities, the existence of a nearby regional seismic reflection profile from industry, and lithologies and well-logs from a deep well. The sedimentary basin interpreted from the seismic and gravity data</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014EGUGA..16.3027M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014EGUGA..16.3027M"><span>Implementation of MAR within the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin of Central New Mexico, USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Marley, Robert; Blandford, T. Neil; Ewing, Amy; Webb, Larry; Yuhas, Katherine</p> <p>2014-05-01</p> <p>The U.S. Bureau of Reclamation has identified the <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin within Central New Mexico as one of several regions where water supplies are over-allocated and future conflicts over the inadequate resource are highly likely. Local water providers have consistently identified managed aquifer recharge (MAR) as an important tool to provide conjunctive management of surface-water, groundwater, and reclaimed water sources in order to extend the useful life of existing water sources. However, MAR projects have been slow to take root partly due to rigorous demonstration requirements, groundwater quality protection concerns, and ongoing water right uncertainties. At first glance the several thousand meters of unconsolidated basin-fill sediments hosting the regional aquifer appear to provide an ideal environment for the subsurface storage of surplus water. However, the basin has a complex structural and depositional history that impacts the siting and overall effectiveness of MAR systems. Several recharge projects are now in various stages of implementation and are overcoming site specific challenges including source water and ambient groundwater compatibility, low-permeability sediments and compartmentalization of the aquifer by extensive faulting, well clogging, and overall water quality management. This presentation will highlight ongoing efforts of these water providers to develop full-scale recharge facilities. The performance of natural in-channel infiltration, engineered infiltration galleries, and direct injection systems designed to introduce from 500 to 5,000 mega-liters per annum to target intervals present from 150 to 600 meters below ground surface will be described. Source waters for recharge operations include inter-basin transferred surface water and highly treated reclaimed water sources requiring from minor to extensive treatment pre-recharge and post-recovery. Operational complexities have raised concerns related to long-term operation and maintenance</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMEP13B0954G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMEP13B0954G"><span>Tracing Anthropogenic Salinity Inputs to the Semi-arid <span class="hlt">Rio</span> <span class="hlt">Grande</span> River: A Multi-isotope Tracer (U, S, B and Sr) Approach</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Garcia, S.; Nyachoti, S. K.; Ma, L.; Szynkiewicz, A.; McIntosh, J. C.</p> <p>2015-12-01</p> <p>High salinity in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> has led to severe reductions in crop productivity and accumulation of salts in soils. These pressing issues exist for other arid rivers worldwide. Salinity contributions to the <span class="hlt">Rio</span> <span class="hlt">Grande</span> have not been adequately quantified, especially from agriculture, urban activities, and geological sources. Here, we use major element concentrations and U, S, B, Sr isotopic signatures to fingerprint the salinity sources. Our study area focuses on a 200 km long stretch of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Elephant Butte Reservoir, NM to El Paso, TX. River samples were collected monthly from 2014 to 2015. Irrigation drains, groundwater wells, city drains and wastewater effluents were sampled as possible anthropogenic salinity end-members. Major element chemistry, U, S and Sr isotope ratios in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> waters suggest multiple salinity inputs from geological, agricultural, and urban sources. Natural upwelling of groundwater is significant for the <span class="hlt">Rio</span> <span class="hlt">Grande</span> near Elephant Butte, as suggested by high TDS values and high (234U/238U), 87Sr/86Sr, δ34S ratios. Agricultural activities (e.g. flood irrigation, groundwater pumping, fertilizer use) are extensive in the Mesilla Valley. <span class="hlt">Rio</span> <span class="hlt">Grande</span> waters from this region have characteristic lower (234U/238U), 87Sr/86Sr, and δ34S ratios, with possible agricultural sources from use of fertilizers and gypsum. Agricultural practices during flood irrigation also intensify evaporation of <span class="hlt">Rio</span> <span class="hlt">Grande</span> surface water and considerably increase water salinity. Shallow groundwater signatures were also identified at several river locations, possibly due to the artificial pumping of local groundwater for irrigation. Impacts of urban activities to river chemistry (high NO3 and B concentrations) were evident for locations downstream to Las Cruces and El Paso wastewater treatment plants, supporting the use of the B isotope as an urban salinity tracer. This study improves our understanding of human impacts on water quality and elemental</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/17680476','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/17680476"><span>Preliminary environmental monitoring of water quality in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Laredo-Nuevo Laredo Region.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Buelna, Genoveva; Riffat, Rumana</p> <p>2007-08-01</p> <p>The international border region of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> faces severe environmental and economic challenges. Contamination and degradation of its fragile lotic environments are mainly due to stresses from rapid population growth and unchecked industrial development. This study evaluates the water quality of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the area of Nuevo Laredo, Mexico and Laredo, Texas, USA, in terms of physical, chemical and bacteriological parameters, as well as total metals, organochlorine pesticides, volatile organic compounds (VOC), semi-volatile organic compounds (SVOC) and radioactivity. Surface water samples were collected at 3 sites along the river. Two additional non-river sites (potable water and residual water) were studied for a better assessment of water quality in the region. Three series of samples were taken every other day during one week (November 3 to November 8, 2005) from the five sampling sites. Levels of oil and grease in all the river samples exceeded the limits established by Mexican regulations. Concentrations of aluminum above the permissible limits for source of drinking water and for quality for protection of freshwater biota were also found in all of the river sites. A number of unregulated elements (Cd, Sr, Mg, Na, Fe, Si, Li and K) appeared in the river samples. The average concentrations of Ba and Na in the potable water samples were below the permissible limits. Ca, Sr, Mg and Si were also found but are not regulated. The majority of the organic compounds studied in both the river and in residual water samples was below detection limits. In all the potable water samples, bromodichloromethane and dibromochloromethane were found above their limit of quantitation (LOQ), but these compounds are not regulated. This preliminary study suggests the need for consistent periodic monitoring to track the environmental status of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ngmdb.usgs.gov/Prodesc/proddesc_80802.htm','USGSPUBS'); return false;" href="http://ngmdb.usgs.gov/Prodesc/proddesc_80802.htm"><span>The Cerrillos Uplift, the La Bajada Constriction, and Hydrogeologic Framework of the Santo Domingo Basin, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Minor, Scott A.</p> <p>2006-01-01</p> <p>The geologic, geophysical, and hydrogeologic properties of the La Bajada constriction and Santo Domingo Basin, northern New Mexico, result from tectonic and volcanic processes of the late Tertiary and Quaternary <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. An integrated geologic and geophysical assessment in the La Bajada constriction allows development of a geologic framework that can provide input for regional ground-water flow models. These models then can provide better estimates of future water supplies in a region that largely subsists on aquifers in <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift basins. The combination of surface geologic investigations (stratigraphic and structural studies; chapters A, B, C, and E), airborne geophysics (aeromagnetic and time-domain electromagnetic surveys; chapters D and F), ground geophysical measurements (gravity and magnetotelluric surveys; chapters D and F), and data from the few wells in the area (chapter G) provides new constraints on the hydrogeologic framework of this area. Summary results of our investigations are synthesized in chapter G. Through-going aquifers consisting of ancestral <span class="hlt">Rio</span> <span class="hlt">Grande</span> axial-river sand and gravel and of coarse western-piedmont gravel form the predominant ground-water pathways through the partly buried structural trough defining the La Bajada constriction between Espa?ola and Santo Domingo Basins. Thick, clay-rich Cretaceous marine shales of low hydraulic conductivity form a pervasive regional confining unit within the Cerrillos uplift on the southeast flank of the constriction. Numerous, dominantly north-northwest-striking, intrabasin faults that project part way across the La Bajada constriction create a matrix of laterally and vertically variable hydrogeologic compartments that locally partition and deflect ground-water flow parallel to faults.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70021696','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70021696"><span>Response of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and shallow ground water in the Mesilla Bolson to irrigation, climate stress, and pumping</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Walton, J.; Ohlmacher, G.; Utz, D.; Kutianawala, M.</p> <p>1999-01-01</p> <p>The El Paso-Ciudad Juarez metropolitan area obtains its water from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and intermontane-basin aquifers. Shallow ground water in this region is in close communications with the surface water system. A major problem with both systems is salinity. Upstream usage of the water in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for irrigation and municipalities has led to concentration of soluble salts to the point where the surface water commonly exceeds drinking water standards. Shallow ground water is recharged by surface water (primarily irrigation canals and agricultural fields) and discharges to surface water (agricultural drains) and deeper ground water. The source of water entering the <span class="hlt">Rio</span> <span class="hlt">Grande</span> varies seasonally. During the irrigation season, water is released from reservoirs and mixes with the return flow from irrigation drains. During the non-irrigation season (winter), flow is from irrigation drains and river water quality is indicative of shallow ground water. The annual cycle can be ascertained from the inverse correlation between ion concentrations and discharge in the river. Water-quality data indicate that the salinity of shallow ground water increases each year during a drought. Water-management strategies in the region can affect water quality. Increasing the pumping rate of water-supply wells will cause shallow ground water to flow into the deeper aquifers and degrade the water quality. Lining the canals in the irrigation system to stop water leakage will lead to water quality degradation in shallow ground water and, eventually, deep ground water by removing a major source of high quality recharge that currently lowers the salinity of the shallow ground water.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012AGUFM.H31I1238R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012AGUFM.H31I1238R"><span>Climate Change Impacts and Adaptation on Water Resources and Agricultural Diversity of the Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Watershed</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Rouhi Rad, M.; Hurd, B. H.</p> <p>2012-12-01</p> <p>Climate change can alter the balance of the water resources systems. It can both change the amount and the timing of the streamflow available in a basin and the amount of water consumed at the end point due to higher temperatures. These changes in the supply and demand sides can result in a different allocation of water and different price for water in basin scale based on economic principles. In a previous study Hurd and Coonrod (2012) modeled the impacts of climate change on the water related economic activities of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. In their study they assumed an aggregated benefit function for the agricultural sector. In another study on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Brinegar and Ward (2009) modeled the agricultural diversity of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> within the framework of a hydro-economic model. This study builds upon and extends the previous studies by developing a model that can more carefully assess the role of adaptation in agriculture. Specially, the current study adds quadratic production functions for each crop. These production functions add a major benefit to the modeling of the hydro-economic system, namely that of adding diversity and expanded resolution to the agricultural sector. Using this production function the model includes both land and water as independent variables in the agricultural sector and, therefore this extension of the model has more flexibility to represent adaptive responses to climatic changes by including the capacity to change the crop mix and acreages as well as the water applied i.e. the capacity to deficit irrigate. The results of this study show that the agricultural sector can lose nearly a third of its water and more than 30% of its net economic benefits as a result of possible climate changes. It also shows as the climate become drier and population grows then economic forces will encourage agriculture to move towards more beneficial crops and reduce total acreage and in some cases applied water.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70127899','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70127899"><span>Streamflow and sediment dynamics of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley, New Mexico, in the context of cottonwood recruitment</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Milhous, Robert T.; Wondzell, Mark; Ritter, Amy</p> <p>1993-01-01</p> <p>The cottonwood gallery forests of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> floodplain in New Mexico provide important habitats for birds and other animals. Over the last century, these forests have changed significantly due to invasion of exotics such as salt cedar and Russian olive, which compete with native cottonwoods, and changes in water use both in the valley and upstream. To successfully germinate and establish, cottonwoods require an adequate water supply, abundant sunlight, and bare, litter-free substrate. Native cottonwoods are adapted to a natural snowmelt hydrograph characterized by spring floods in late May or early June and gradually receding streamflows throughout the remainder of the summer. The natural streamflow pattern has been significantly modified by water management in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin. The modified pattern is less conducive to establishment of cottonwoods than the natural pattern. In addition, exotic species now compete with native cottonwoods, and the modified flow pattern may favor these exotics. The overall objective of this study was to investigate the possibility of enhancing cottonwood establishment and recruitment along the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> through streamflow manipulation and reservoir releases. The work integrates concepts of cottonwood establishment, water resources management, and river morphology, and investigates how water management might be used to preserve and enhance cottonwood gallery forests along the river. Specific objectives of the work reported herein were to: (1) develop a technique to calculate flows that will produce channel characteristics necessary to restore and sustain cottonwood gallery forests; (2) develop a model to determine a flow pattern, or sequence of flows, that will improve the potential for cottonwood establishment and recruitment; and (3) determine if the water resources can be managed to produce the desired channel characteristics and flow pattern identified in (1) and (2).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008AGUFM.H31H..06D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008AGUFM.H31H..06D"><span>From Channel to Floodplain: Geomorphic Transformation of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Big Bend Region of Texas, Chihuahua, and Coahuila</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dean, D. J.; Schmidt, J. C.</p> <p>2008-12-01</p> <p>Multiple analyses indicate that over the last 17 years on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Big Bend National Park, a positive feedback mechanism existed between extended base-flows, non-native vegetation invasion, and vertical floodplain accretion which caused rapid channel narrowing and disconnection of the floodplain from the channel. We identified this feedback mechanism using detailed stratigraphic analyses of inset floodplain deposits, dendro-geomorphological analyses of woody vegetation removed from floodplain trenches, hydrologic analyses, and observed shifts in the stage-discharge relation. The active channel width of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> has narrowed by 35-50% since 1991. Narrowing has occurred by vertical accretion of fine-grained deposits on top of alternate bars of sand, gravel, and cobbles. These vertically accreting deposits are inset within natural levees. In two long floodplain trenches, we measured 2.75 and 3.5m of vertical accretion, all of which occurred during the past 17 years. In some localities, nearly 90% of bare, active channel bars were converted to vegetated floodplain during the same period. Channel narrowing by vertical accretion coincided with a rapid invasion of non-native riparian vegetation (Tamarix spp., Arundo donax) which increased bank roughness and created a positive feedback of decreased channel capacity, an upward shift of the stage-discharge relation, overbank flooding at lower discharges, and continued vertical accretion. Thus, although peak flows were reduced by 48% and the percent exceedance of both the two-year flood and long- term mean annual flow declined during the past 17 years, overbank flooding continued. These changes reflect a shift in the geomorphic character of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from a wide river with transient channel margins and in-stream geomorphic features to a simple channel with steep, definable, vegetated banks and few bare active geomorphic surfaces.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_21 --> <div id="page_22" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="421"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/16739421','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/16739421"><span>Emergence of West Nile virus in mosquito (Diptera: Culicidae) communities of the New Mexico <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>DiMenna, Mark A; Bueno, Rudy; Parmenter, Robert R; Norris, Douglas E; Sheyka, Jeff M; Molina, Josephine L; LaBeau, Elisa M; Hatton, Elizabeth S; Glass, Gregory E</p> <p>2006-05-01</p> <p>The first appearances of West Nile virus (family Flaviviridae, genus Flavivirus, WNV) in New Mexico were reported in late summer to early fall 2002. Several dead birds tested positive for WNV, and 78 equine cases were confirmed. All mosquito pools tested (n = 268) were negative. A statewide surveillance program was launched in May 2003 to study the emergence and spread of this new arbovirus in mosquitoes from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley. Mosquitoes were trapped at 32 sites along a 750-km stretch of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley. Sites were trapped for one night either weekly or biweekly, by using CO2-baited CDC light traps and gravid traps. Pools of captured mosquitoes were tested for WNV by reverse transcription-polymerase chain reaction. By mid-July 2003, WNV levels in the mosquito population had reached levels that were detectable by the surveillance program. Positive pools of mosquitoes were found in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley from mid-July through late September. In total, 75 positive pools were found, from sites throughout the study area. The predominant species infected with WNV in this region were Culex tarsalis (Coquillett) in rural areas, and Culex salinarius (Coquillett) and Culex pipiens quinquefasciatus (Say) in urban areas. There were 202 human cases and 438 equine cases of WNV in New Mexico in 2003, which corresponded well in time with the positive mosquitoes. Our results seemed to be consistent with introduction of WNV in late summer 2002, followed by a period of transmission and amplification cycles between local avian hosts and mosquito vectors.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4152309','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4152309"><span>Emergence of West Nile Virus in Mosquito (Diptera: Culicidae) Communities of the New Mexico <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>DiMenna, Mark A.; Bueno, Rudy; Parmenter, Robert R.; Norris, Douglas E.; Sheyka, Jeff M.; Molina, Josephine L.; LaBeau, Elisa M.; Hatton, Elizabeth S.; Glass, Gregory E.</p> <p>2014-01-01</p> <p>The first appearances of West Nile virus (family Flaviviridae, genus Flavivirus, WNV) in New Mexico were reported in late summer to early fall 2002. Several dead birds tested positive for WNV, and 78 equine cases were confirmed. All mosquito pools tested (n = 268) were negative. A statewide surveillance program was launched in May 2003 to study the emergence and spread of this new arbovirus in mosquitoes from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley. Mosquitoes were trapped at 32 sites along a 750-km stretch of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley. Sites were trapped for one night either weekly or biweekly, by using CO2-baited CDC light traps and gravid traps. Pools of captured mosquitoes were tested for WNV by reverse transcription-polymerase chain reaction. By mid-July 2003, WNV levels in the mosquito population had reached levels that were detectable by the surveillance program. Positive pools of mosquitoes were found in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley from mid-July through late September. In total, 75 positive pools were found, from sites throughout the study area. The predominant species infected with WNV in this region were Culex tarsalis (Coquillett) in rural areas, and Culex salinarius (Coquillett) and Culex pipiens quinquefasciatus (Say) in urban areas. There were 202 human cases and 438 equine cases of WNV in New Mexico in 2003, which corresponded well in time with the positive mosquitoes. Our results seemed to be consistent with introduction of WNV in late summer 2002, followed by a period of transmission and amplification cycles between local avian hosts and mosquito vectors. PMID:16739421</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18641908','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18641908"><span>[Identification of host plants of the avocado borer, Stenoma catenifer Walsingham (Lepidoptera: Elachistidae) in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Link, Dionísio; Link, Fabio M</p> <p>2008-01-01</p> <p>Fruits of Nectandra megapotamica Mez and Cinnamomum camphora (L.) (Lauraceae) were collected in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, in 2004. Species of five families of insects were found inside the fruits: two fly species (Diptera: Drosophilidae: Drosophila spp.), six beetle species, Heilipus sp., Conotrachelus sp. (Curculionidae), Hypothenemus sp. (Scolytidae) and three species of Carpophilus (Nitidulidae), and moths (Lepidoptera: Elachistidae). The moth especimes were identified as Stenoma catenifer Walsingham, the avocado borer. The occurrence of the moth was predominant from early April until middle May. The natural larval infestation level was low. Two new host plant of the pest were identified.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19780063392&hterms=amparo&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Damparo','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19780063392&hterms=amparo&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Damparo"><span>Studies of Brazilian meteorites. XIII - Mineralogy, petrology, and chemistry of the Putinga, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, chondrite</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Keil, K.; Lange, D.; Ulbrich, M. N. C.; Gomes, C. B.; Jarosewich, E.; Roisenberg, A.; Souza, M. J.</p> <p>1978-01-01</p> <p>The Putinga, <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul chondrite is described and classified as an L6. The mineral composition and some significant ratios of elements are reported, and the reasons for assignment to the L group and to petrologic type 6 are explained. The analysis suggests that maskelynite of oligoclase composition was formed by solid-state shock transformation of previously existing well-crystallized plagioclase at estimated shock pressures of about 250-350 kbar. This finding indicates that recrystallization (formation of well-crystallized oligoclase) preceded shock transformation formation of the maskelynite.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23429743','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23429743"><span>[German doctors in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul in the first half of the twentieth century: integration and conflict].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gertz, René E</p> <p>2013-03-01</p> <p>In 1824, a group of German immigrants settled in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, initiating a process of immigration that continued until World War II. The physician Daniel Hillebrand, first director of the Colony of São Leopoldo, was part of this group. During the subsequent 125 years, other German doctors emigrated to the state - some graduates of medical school, others with partial studies only. Many played notable roles in the practice of medicine, reinforcing what the title calls integration. Yet their presence also generated conflicts. The article analyzes these processes of contributions and clashes, especially from the proclamation of the Republic through World War II.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/8278745','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/8278745"><span>[Triatoma delpontei Romaña & Abalos, 1947 (Hemiptera, Tratominae) in the Brazilian State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Salvatella Agrelo, R; Basmadjian, Y; Rosa, R; Puime, A</p> <p>1993-01-01</p> <p>Triatoma delpontei (Romaña & Abalos, 1947) (Hemiptera, Triatominae) is an ornithophilic sylvatic with a particular association to the psittacid Myiopsitta monachus (Boaddert, 1783). It is found in the continental biogeographical province of the Chaco, where it inhabits the nests or M. monachus, in subtropical xerophytic forests. The authors report the first finding of T. delpontei in Brasil, in the "campanha" region of the State or <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Barra do Quarai, Uruguaiana), on the right bank of the River Cuareim, not far from de Uruguayan border.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18035587','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18035587"><span>Occurrence of gastrointestinal protozoa in Didelphis albiventris (opossum) in the central region of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Zanette, Régis A; da Silva, Aleksandro S; Lunardi, Fabiane; Santurio, Janio M; Monteiro, Silvia G</p> <p>2008-06-01</p> <p>The aim of this study was to evaluate the parasitism by gastrointestinal protozoa in Didelphis albiventris (opossum) in the central region of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state. Fecal samples from six free living opossums were collected for research of parasites. Samples were analyzed by the centrifugal-flotation method with zinc sulfate and parasites were identified microscopically based on (oo)cyst size and morphology. Cysts of Giardia sp. and oocysts of Cryptosporidium sp. and Eimeria sp. were observed in four of the six opossums. All four infected marsupials showed mild infection by protozoa. This is the first report of Giardia sp. in D. albiventris.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1997/0667/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1997/0667/report.pdf"><span>Concentrations of selected trace elements and other constituents in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and in fish tissue in the vicinity of Albuquerque, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wilcox, Ralph</p> <p>1997-01-01</p> <p>The State of New Mexico and the Pueblo of Isleta have established surface-water standards for trace elements to control discharges of these contaminants. Before these standards can be meaningfully applied, however, ambient concentrations and loads of trace elements, principally arsenic, need to be determined in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and inflow sources. Arsenic concentrations also need to be determined in the edible portion of fish tissue because the Pueblo of Isleta standard for arsenic is based on fish consumption. Eighteen surface-water sampling sites on a reach of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from the Pueblo of San Felipe to Los Lunas, New Mexico, were sampled quarterly from October 1994 to August 1996. The sites include eight <span class="hlt">Rio</span> <span class="hlt">Grande</span> sites, one Jemez River site, five riverside drain sites, and four wastewater- treatment plant outfalls. Trace-element protocol was used to collect and process the samples. Field and laboratory quality-control samples were analyzed, and the results are included in this report. Fish-tissue samples were collected from four of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> sites and the Albuquerque Riverside Drain, the Atrisco Riverside Drain, and three lakes at a recreational fishing area on the Isleta Indian Reservation. Arsenic in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> is nearly all in the dissolved phase. There was little temporal change in arsenic concentration at the <span class="hlt">Rio</span> <span class="hlt">Grande</span> sites. The mean dissolved-arsenic concentration in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> increased downstream from 1.8 micrograms per liter at the Pueblo of San Felipe to 3.6 micrograms per liter at Los Lunas. Mean dissolved-arsenic concentrations in the riverside drains were slightly higher (2.8 to 4.5 micrograms per liter) than those in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and were higher still in the wastewater-treatment plant outfalls (7.9 to 16.2 micrograms per liter) and the Jemez River (18.2 micrograms per liter). The mean total-arsenic concentration in fish-tissue samples from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and Albuquerque Riverside Drain was 14.53 micrograms per kilogram.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wsp/1663c/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wsp/1663c/report.pdf"><span>Ground-water resources of the Acu Valley, <span class="hlt">Rio</span> <span class="hlt">Grande</span> Norte, Brazil</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Rodis, Harry G.; de Castro Araujo, Jonas Maria.</p> <p>1968-01-01</p> <p>The Acu Valley is the lower part of the <span class="hlt">Rio</span> Piranhas valley in the northwestern part of the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil. It begins where the <span class="hlt">Rio</span> Piranhas leaves the crystalline Precambrian rocks to flow across the outcrop of sedimentary rocks. The area considered in this report extends northward for about 45 kilometers; it is terminated arbitrarily where encroachment by sea water has contaminated the aquifer and imparted a disagreeable saline taste to the water in it. The boundary was not determined in the field, however, for lack of special equipment. Part of the extensive uplands on either side of the valley are included. This makes the total area approximately 2,500 square kilometers. The largest town, Acu, had a population of about 8,000 in 1960. The area is considered to be part of the Drought Polygon of northeast Brazil because the precipitation, although averaging 448 millimeters annually at Acu, varies widely from year to year and often is deficient for many months. The precipitation has been supplemented by use of irrigation wells, but irrigated agriculture is not yet far advanced, and the quantities of water used in irrigation are small. Geologically, the area consists of basement crystalline rocks (Precambrian), a wedge of sedimentary rocks thickening northward (Cretaceous), and alluvial sediments constituting a narrow band in the bottom of the valley (Alluvium and terrace deposits). The crystalline rocks contain water mainly in fractures and, in general, are impermeable. The sedimentary rocks of Cretaceous age comprise two units: a thick but fine-grained sandstone grading upward into siltstone and shale (Acu Sandstone), and limestone and dolomite with an included shale zone (Jandaira Limestone). The sandstone especially and the limestone to a lesser degree are ground-water reservoirs of large capacity. The limestone has been tapped at several places, but the sandstone and its contained water are practically untested and, hence, imperfectly</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21192548','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21192548"><span>Spatial and temporal distribution of the Asian fish tapeworm Bothriocephalus acheilognathi (Cestoda: Bothriocephalidea) in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> (Río Bravo del Norte).</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bean, Megan G; Bonner, Timothy H</p> <p>2010-09-01</p> <p>Recent collections of the Asian fish tapeworm Bothriocephalus acheilognathi in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> have raised concern about the potential impacts on <span class="hlt">Rio</span> <span class="hlt">Grande</span> endemic and imperiled fishes. The objectives of this study were to determine distribution and definitive hosts of the Asian fish tapeworm within the <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainage and to quantify occurrences and abundances. In total, 1,992 fish spanning 11 families were collected and examined for Asian fish tapeworms in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and the Pecos and Devils rivers. The parasite was collected from red shiners Cyprinella lutrensis, Tamaulipas shiners Notropis braytoni, sand shiners N. stramineus, river carpsuckers Carpiodes carpio, plains killifish Fundulus zebrinus, western mosquitofish Gambusia affinis, blue suckers Cycleptus elongatus, blacktail shiners Cyprinella venusta, proserpine shiners Cyprinella proserpina, and Manantial roundnose minnow Dionda argentosa, with the latter four species being new host records. Monthly collections of red shiners from Big Bend National Park exhibited prevalence levels above 15% in January-March and December and below 10% during April-June and October. With over 50% of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> icthyofauna in Texas considered imperiled, the occurrence and pathological effects of the Asian fish tapeworm in combination with reduced water quantity and quality and increased habitat fragmentation are of concern for these taxa.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2013/1051/ofr2013-1051.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2013/1051/ofr2013-1051.pdf"><span>Water temperature and baseflow discharge of streams throughout the range of <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout in Colorado and New Mexico—2010 and 2011</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Zeigler, Matthew P.; Todd, Andrew S.; Caldwell, Colleen A.</p> <p>2013-01-01</p> <p>This study characterized the thermal regime in a number of Colorado and New Mexico streams that contain populations of <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout (Oncorhynchus clarkii virginalis) and had no previous record of continual temperature records. When compared to Colorado’s water temperature criteria (Cold Tier 1), a portion of these populations appeared to be at risk from elevated stream temperatures, as indicated by exceedance of both acute (17–22 percent) and chronic (2–9 percent) water quality metrics. Summer water temperature profiles recorded at sites within current <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout habitat indicated that although the majority of currently occupied conservation streams have temperatures that fall well below these biologically based acute and chronic thermal thresholds, several sites may be at or approaching water temperatures considered stressful to cutthroat trout. Further, water temperatures should be considered in decisions regarding the current and future thermal suitability of potential <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout restoration sites. Additionally, baseflow discharge sampling indicated that a majority of the sampled stream segments containing <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout have flows less than 1.0 cubic feet per second (cfs) in both 2010 (74 percent) and 2011 (77 percent). The relative drought sensitivity of these low baseflow streams containing <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout could be further evaluated to assess their probable sustainability under possible future drought conditions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/15981186','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/15981186"><span>Heterogeneity of the genome ancestry of individuals classified as White in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Marrero, Andrea Rita; Das Neves Leite, Fábio Pereira; De Almeida Carvalho, Bianca; Peres, Leandro Martins; Kommers, Trícia Cristine; Da Cruz, Ivana Mânica; Salzano, Francisco Mauro; Ruiz-Linares, Andres; Da Silva Júnior, Wilson Araújo; Bortolini, Maria Cátira</p> <p>2005-01-01</p> <p>One hundred nineteen individuals classified as White, living in different localities of the Brazilian state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, were studied in relation to the HVS-I region of the mitochondrial DNA (mtDNA). The male fraction of the sample (N = 74) was also tested for seven Y-chromosome polymorphisms. In a specific population (Veranópolis), a city characterized by a large influence of the Italian immigration of the 19th century, the results from the maternal and paternal sides indicated almost complete European ancestry. However, another sample identified as White, from different localities of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, presented significant fractions of Native American (36%) and African (16%) mtDNA haplogroups. These results indicate that Brazilian populations are remarkably heterogeneous; while some present an overwhelming majority of transplanted European genomes, with a complete correspondence between physical appearance and ancestry, others reflect a history of extensive admixture with dissociation between physical appearance and ancestry. Copyright 2005 Wiley-Liss, Inc</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26827853','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26827853"><span>Assessing the risk of bovine fasciolosis using linear regression analysis for the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Silva, Ana Elisa Pereira; Freitas, Corina da Costa; Dutra, Luciano Vieira; Molento, Marcelo Beltrão</p> <p>2016-02-15</p> <p>Fasciola hepatica is the causative agent of fasciolosis, a disease that triggers a chronic inflammatory process in the liver affecting mainly ruminants and other animals including humans. In Brazil, F. hepatica occurs in larger numbers in the most Southern state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. The objective of this study was to estimate areas at risk using an eight-year (2002-2010) time series of climatic and environmental variables that best relate to the disease using a linear regression method to municipalities in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul. The positivity index of the disease, which is the rate of infected animal per slaughtered animal, was divided into three risk classes: low, medium and high. The accuracy of the known sample classification on the confusion matrix for the low, medium and high rates produced by the estimated model presented values between 39 and 88% depending of the year. The regression analysis showed the importance of the time-based data for the construction of the model, considering the two variables of the previous year of the event (positivity index and maximum temperature). The generated data is important for epidemiological and parasite control studies mainly because F. hepatica is an infection that can last from months to years.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2000/0477/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2000/0477/report.pdf"><span>Description of piezometers installed in the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin area, 1997-99, central New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bartolino, J.R.; Rankin, D.R.</p> <p>2000-01-01</p> <p>Since 1993, the Santa Fe Group aquifer system in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, and particularly in the Albuquerque area, has been the focus of studies to further define the extent of the most productive parts of the aquifer and to gain a better understanding of how ground- water levels are changing over time. The U.S. Geological Survey, in cooperation with the New Mexico Office of the State Engineer, installed nine piezometers during 1998-99 at five sites in and near the margin of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin in central New Mexico. In addition, the New Mexico Office of the State Engineer installed another nine piezometers at three sites during 1997. These piezometers allow for collection of ground-water-level data in areas for which little information is available. Most of the piezometers were constructed of 2.5-inch-diameter flush-joint polyvinyl chloride (PVC) schedule 80 casing with 10-foot stainless steel screens; the shallow piezometer at the Tome site has a 40-foot screen, and the single piezometers at the Dome Road and Phoenix Road sites have steel casing with welded joints and a 10- and a 20-foot screen, respectively. Steel casing with a locking lid covers the uppermost 2 feet of the piezometer casing. Drillers' logs and petrophysical logs were collected from the deepest borehole at each site.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3459408','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3459408"><span>Prevalence of α-thalassemia 3.7 kb deletion in the adult population of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>de Medeiros Alcoforado, Gustavo Henrique; Bezerra, Christiane Medeiros; Araújo Moura Lemos, Telma Maria; de Oliveira, Denise Madureira; Kimura, Elza Miyuki; Ferreira Costa, Fernando; de Fátima Sonati, Maria; de Medeiros, Tereza Maria Dantas</p> <p>2012-01-01</p> <p>α-Thalassemia, arising from a defect in α-globin chain synthesis, is often caused by deletions involving one or both of the α-genes on the same allele. With the aim of investigating the prevalence of α-thalassemia 3.7 kb deletion in the adult population of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, 713 unrelated individuals, between 18 and 59 years-of-age, were analyzed. Red blood cell indices were electronically determined, and A2 and F hemoglobins evaluated by HPLC. PCR was applied to the molecular investigation of α-thalassemia 3.7 kb deletion. Eighty (11.2%) of the 713 individuals investigated presented α-thalassemia, of which 79 (11.1%) were heterozygous (-α3.7/αα) deletions and 1 (0.1%) homozygous (-α3.7/-α3.7). Ethnically, heterozygous deletions were higher (24.8%) in Afro-Brazilians. Comparison of hematological parameters between individuals with normal genotype and those with heterozygous α+-thalassemia showed a statistically significant difference in the number of erythrocytes (p < 0.001), MCV (p < 0.001), MCH (p < 0.001) and Hb A2 (p = 0.007). This study is one of the first dedicated to investigating α-thalassemia 3.7 kb deletion in the population of the State <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte state. Results obtained demonstrate the importance of investigating this condition in order to elucidate the causes of microcytosis and hypochromia. PMID:23055797</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.bioone.org/doi/full/10.1894/0038-4909-58.4.411','USGSPUBS'); return false;" href="http://www.bioone.org/doi/full/10.1894/0038-4909-58.4.411"><span>Home range and use of habitat of western yellow-billed cuckoos on the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Juddson Sechrist, jschrist@nsbr.gov; Darrell Ahlers, dahlers@usbr.gov; Katherine Potak Zehfuss, kzehfuss@usbr.gov; Robert Doster, rob_doster@fws.gov; Paxton, Eben; Ryan, Vicky M.</p> <p>2013-01-01</p> <p>The western yellow-billed cuckoo (Coccyzus americanus occidentalis) is a Distinct Population Segment that has been proposed for listing under the Endangered Species Act, yet very little is known about its spatial use on the breeding grounds. We implemented a study, using radio telemetry, of home range and use of habitat for breeding cuckoos along the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> in central New Mexico in 2007 and 2008. Nine of 13 cuckoos were tracked for sufficient time to generate estimates of home range. Overall size of home ranges for the 2 years was 91 ha for a minimum-convex-polygon estimate and 62 ha for a 95%-kernel-home-range estimate. Home ranges varied considerably among individuals, highlighting variability in spatial use by cuckoos. Additionally, use of habitat differed between core areas and overall home ranges, but the differences were nonsignificant. Home ranges calculated for western yellow-billed cuckoos on the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> are larger than those in other southwestern riparian areas. Based on calculated home ranges and availability of riparian habitat in the study area, we estimate that the study area is capable of supporting 82-99 nonoverlapping home ranges of cuckoos. Spatial data from this study should contribute to the understanding of the requirements of area and habitat of this species for management of resources and help facilitate recovery if a listing occurs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70026708','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70026708"><span>Hydrochemical tracers in the middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, USA: 2. Calibration of a groundwater-flow model</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Sanford, W.E.; Plummer, L.N.; McAda, D.P.; Bexfield, L.M.; Anderholm, S.K.</p> <p>2004-01-01</p> <p>The calibration of a groundwater model with the aid of hydrochemical data has demonstrated that low recharge rates in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin may be responsible for a groundwater trough in the center of the basin and for a substantial amount of <span class="hlt">Rio</span> <span class="hlt">Grande</span> water in the regional flow system. Earlier models of the basin had difficulty reproducing these features without any hydrochemical data to constrain the rates and distribution of recharge. The objective of this study was to use the large quantity of available hydrochemical data to help calibrate the model parameters, including the recharge rates. The model was constructed using the US Geological Survey's software MODFLOW, MODPATH, and UCODE, and calibrated using 14C activities and the positions of certain flow zones defined by the hydrochemical data. Parameter estimation was performed using a combination of nonlinear regression techniques and a manual search for the minimum difference between field and simulated observations. The calibrated recharge values were substantially smaller than those used in previous models. Results from a 30,000-year transient simulation suggest that recharge was at a maximum about 20,000 years ago and at a minimum about 10,000 years ago. ?? Springer-Verlag 2004.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.H13C1554S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.H13C1554S"><span>Development of Semi-distributed ecohydrological model in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> De Manati River Basin, Puerto Rico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Setegn, S. G.; Ortiz, J.; Melendez, J.; Barreto, M.; Torres-Perez, J. L.; Guild, L. S.</p> <p>2015-12-01</p> <p>There are limited studies in Puerto Rico that shows the water resources availability and variability with respect to changing climates and land use. The main goal of the HICE-PR (Human Impacts to Coastal Ecosystems in Puerto Rico (HICE-PR): the Río Loco Watershed (southwest coast PR) project which was funded by NASA is to evaluate the impacts of land use/land cover changes on the quality and extent of coastal and marine ecosystems (CMEs) in two priority watersheds in Puerto Rico (Manatí and Guánica).The main objective of this study is to set up a physically based spatially distributed hydrological model, Soil and Water Assessment Tool (SWAT) for the analysis of hydrological processes in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Manati river basin. SWAT (soil and water assessment tool) is a spatially distributed watershed model developed to predict the impact of land management practices on water, sediment and agricultural chemical yields in large complex watersheds. For efficient use of distributed models for hydrological and scenario analysis, it is important that these models pass through a careful calibration and uncertainty analysis. The model was calibrated and validated using Sequential Uncertainty Fitting (SUFI-2) calibration and uncertainty analysis algorithms. The model evaluation statistics for streamflows prediction shows that there is a good agreement between the measured and simulated flows that was verified by coefficients of determination and Nash Sutcliffe efficiency greater than 0.5. Keywords: Hydrological Modeling; SWAT; SUFI-2; <span class="hlt">Rio</span> <span class="hlt">Grande</span> De Manati; Puerto Rico</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24897203','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24897203"><span>[Utilization and coverage of a Food and Nutritional Surveillance System in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Jung, Natália Miranda; Bairros, Fernanda de Souza; Neutzling, Marilda Borges</p> <p>2014-05-01</p> <p>This article seeks to describe the utilization and coverage percentage of the Nutritional and Food Surveillance System (SISVAN-Web) in the Regional Health Offices of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul in 2010 and to assess its correlation with socio-economic, demographic and health system organization variables at the time. It is an ecological study that used secondary data from the SISVAN-Web, the Department of Primary Health Care, the IT Department of the Unified Health System and the Brazilian Institute of Geography and Statistics. The evaluation of utilization and coverage data was restricted to nutritional status. The percentage of utilization of SISVAN-Web refers to the number of cities that fed the system. Total coverage was defined as the percentage of individuals in all stages of the life cycle monitored by SISVAN-Web. It was found that 324 cities fed the application, corresponding to a utilization percentage of 65.3%. Greater system coverage was observed in all Regional Health Coordination (RHC) Units for ages 0 to 5 years and 5-10 years. There was a significant association between the percentage of utilization of SISVAN-Web and Family Health Strategy coverage in each RHC Unit. The results of this study indicated low percentages of utilization and coverage of SISVAN-Web in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5640384','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5640384"><span>Quaternary history of Red Mountain Creek Valley and its relation to the <span class="hlt">Rio</span> <span class="hlt">Grande</span> glacier system near Creede, CO</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kitchens, S. . Dept. of Geology)</p> <p>1993-03-01</p> <p>Interactions between the <span class="hlt">Rio</span> <span class="hlt">Grande</span> glacier system and the Red Mountain Creek glacier are more complex than previously believed. Although both glaciers were fed by the same ice cap along the continental divide, the timing and number of advances are different. Analysis of air photos and field relationships reveal a series of end moraines at the mouth of Red Mountain Creek. The presence of these moraines disproves the hypothesis of Atwood and Mather (1932) that the two were confluent during the last phase of glaciation. The degree of weathering rind development on mafic cobbles was used together with the degree of clay mineral development in the soils to determine relative ages and the number of advances in each system. The less than 2[mu]m material for X-ray diffraction analysis was separated from soil samples collected from pits excavated on the tops of end moraines. Both smectite and kaolinite were found within the soil profile thus indicating weathering of minerals in tills derived from the local biotite-sanadine-hornblende tuffs. The amount of post glacial weathering was estimated based on the relative intensity of the 17[angstrom] smectite peak after ethylene glycol solvation. Both the X-ray and weathering rind analysis show two separate glacial events in Red Mountain Creek valley. However, in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> system the weathering rind data suggests two glacial events while the clay mineralogy suggests only one.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_22 --> <div id="page_23" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="441"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AGUFMNS23A1132F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AGUFMNS23A1132F"><span>Preliminary Geophysical Characterization of a CO2-Driven Geyser in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Feucht, D. W.; Jensen, K. J.; Kelly, C.; Ryan, J. C.; Ferriz, H.; Kanjorski, N.; Ferguson, J. F.; McPhee, D. K.; Pellerin, L.</p> <p>2009-12-01</p> <p>As part of the Summer of Applied Geophysical Experience (SAGE) a preliminary geophysical investigation was conducted in the vicinity of a cold CO2-driven geyser located at Chimayó, NM, along the eastern margin of the <span class="hlt">Rio</span> <span class="hlt">Grand</span> Rift. This geyser is of interest as a possible analog for CO2 leakage from deep saline-aquifer carbon sequestration projects. Observed water chemistry variations can be explained by mixing of a CO2-rich, high salinity brine rising into, and mixing with a shallow freshwater aquifer. Several large, basin bounding faults and numerous smaller normal faults cut the area of the well and may constitute the necessary conduit for the deep water. Geophysical methods were used to characterize the subsurface properties at the Chimayó geyser as well as regional structures that may influence groundwater flow in the area. Shallow transient electromagnetic (TEM) data and capactively-coupled resistivity (CCR) data were acquired in close proximity to the geyser. The CCR shows a near-surface resistive feature, possibly hematite-cemented Tesuque formation sediment, in close proximity to the geyser. A shallow, highly conductive layer delineated through modeling of the TEM data is postulated to be a fluid consistent with high levels of Total Dissolved Solid (TDS) content. The well is located almost directly on the Roberts fault, which is antithetic to the basin bounding Chimayó fault 1.5 km to the east. Previously published hydrogeochemical studies associate this fault with high CO2 and TDS water along its strike. Deeper sounding TEM and audiomagnetotelluric (AMT) data were acquired along the Alamo Arroyo, 3 km to the southwest of the well. The Kelley Federal #1 Well located in this arroyo provides deep stratigraphic control to Pennsylvanian carbonate basement at 740 m. Tesuque formation conglomeritic alluvial fan deposits occur between 230 and 708 m and are overlain by finer grained basin floor deposits. The deep, coarse grained unit is thought to be a good</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2003AGUFM.A31C0042C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2003AGUFM.A31C0042C"><span>Surface flux processes and evolution of characteristic eddy scales above a young Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> forest</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cleverly, J. R.; Thibault, J. R.; Slusher, M.; Hipps, L.; Prueger, J.; Dahm, C. N.</p> <p>2003-12-01</p> <p>The extended drought throughout the Southwest has brought water budgets and policy decisions into public purview. It is often presumed that riparian restoration, i.e. removal of non-native species, presents a water salvage panacea. The cost of such operations can be prohibitive, making reliable estimates of phreatophytic ET a crucial piece of information. This study has taken a long-term approach to monitoring ET water flux from a variety of these forests. ET monitoring towers have been established at 5 sites along the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> -- 2 over mature cottonwood forests, 2 over mature saltcedar forests, and 1 over a young mixed stand of Russian olive and willow. Because there is yet no infallible method for determining ET fluxes, eddy covariance technology provides the best method for evaluating those processes in the surface layer by provided data directly into surface layer similarity relationships. ET, energy, and carbon flux were measured during the 2003 growing season from towers using the 3-dimensional sonic eddy covariance (3SEC) method. Scalar flux sensors included a 3-D sonic anemometer, Krypton hygrometer, 12.7 μ m type E fine wire thermocouple (Campbell Scientific, Inc), and LI-7500 open-path IRGA (Licor, Inc). An averaging period of 30 min was chosen based as a period of low cospectral density. The following corrections were applied to these fluxes: coordinate rotation; correction of frequency-specific signal attenuation due to instrument separation, instrument line averaging, and signal path length (Massman 2000 & 2001); krypton hygrometer calibration as a function of humidity; oxygen contribution to the krypton hygrometer signal; and flux effects on measured densities (Webb et al 1980). These corrections reduced the closure error by 5 percent. Closure was then forced using the measured Bowen Ratio as the weighting factor. Measured ET, along with leaf area index, was reduced as much as 35 percent during the prolonged drought in the southwestern U</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004AGUFM.H32B..04L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004AGUFM.H32B..04L"><span>A Conceptual Framework for SAHRA Integrated Multi-resolution Modeling in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Liu, Y.; Gupta, H.; Springer, E.; Wagener, T.; Brookshire, D.; Duffy, C.</p> <p>2004-12-01</p> <p>The sustainable management of water resources in a river basin requires an integrated analysis of the social, economic, environmental and institutional dimensions of the problem. Numerical models are commonly used for integration of these dimensions and for communication of the analysis results to stakeholders and policy makers. The National Science Foundation Science and Technology Center for Sustainability of semi-Arid Hydrology and Riparian Areas (SAHRA) has been developing integrated multi-resolution models to assess impacts of climate variability and land use change on water resources in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin. These models not only couple natural systems such as surface and ground waters, but will also include engineering, economic and social components that may be involved in water resources decision-making processes. This presentation will describe the conceptual framework being developed by SAHRA to guide and focus the multiple modeling efforts and to assist the modeling team in planning, data collection and interpretation, communication, evaluation, etc. One of the major components of this conceptual framework is a Conceptual Site Model (CSM), which describes the basin and its environment based on existing knowledge and identifies what additional information must be collected to develop technically sound models at various resolutions. The initial CSM is based on analyses of basin profile information that has been collected, including a physical profile (e.g., topographic and vegetative features), a man-made facility profile (e.g., dams, diversions, and pumping stations), and a land use and ecological profile (e.g., demographics, natural habitats, and endangered species). Based on the initial CSM, a Conceptual Physical Model (CPM) is developed to guide and evaluate the selection of a model code (or numerical model) for each resolution to conduct simulations and predictions. A CPM identifies, conceptually, all the physical processes and engineering and socio</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011AGUFM.H13A1176W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011AGUFM.H13A1176W"><span>Role of Faults in Controlling Hydrothermal Fluid Flow, Salinity, Helium, and CO2 Transport along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Woolsey, E. E.; Person, M. A.; Crossey, L. J.; Karlstrom, K. E.</p> <p>2011-12-01</p> <p>Groundwater 3He/4He anomalies ( ≤ 0.65 Ra) reported in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift are probable indications of complex mixing of mantle, heat, and crustal fluids. A suite of new noble gas and water samples were recently collected across the Albuquerque and Socorro Basins of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift including one from the recently completed geothermal slim hole near the NMT campus to help determine the flux of mantle derived fluids through the crust. High CO2 levels measured at the travertine depositing springs at Tierra Amarilla near San Yisidro on the Nacimiento fault provide further indication of mantle degassing. The water discharged at the Tierra Amarilla springs carries mantle volatiles and contains high salinity and elevated trace metals such as arsenic. A better understanding of the hydrologic controls is necessary to assess the degradation of water quality. A series of east-west and north-south basin-scale, cross-sectional hydrologic models were constructed along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift in the Albuquerque and Socorro Basins to assess the relative importance of faults as conduits for meteoric and deep endogenic fluids. These models extend to a depth of 15 km to incorporate deeply derived inputs. The north-south cross-section was developed from geologic maps, well bore lithologic logs, as well as gravity and seismic-surveys. Separate east-west models were developed for the lystric and sub-vertical normal faults in the southern Albuquerque Basin to quantify how differently CO2 and helium transport responds in each fault system using the same hydrologic parameters. New and existing groundwater salinity, temperature, 3He/4He, and 14C data provide the ground truth for model calibration. The cross-sectional models used in this study illustrate the importance of deeply penetrating, moderately permeable fault zones (10-14 to 10-16 m2) in advective transport of groundwater and mantle volatiles to shallow crustal levels. <span class="hlt">Rio</span> <span class="hlt">Grande</span> surface water increases in salinity from north to</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010PhDT.......177M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010PhDT.......177M"><span>A multi-dimensional analysis of the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span>-San Luis Valley social-ecological system</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mix, Ken</p> <p></p> <p>The Upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> (URG), located in the San Luis Valley (SLV) of southern Colorado, is the primary contributor to streamflow to the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, upstream of the confluence of the <span class="hlt">Rio</span> Conchos at Presidio, TX. The URG-SLV includes a complex irrigation-dependent agricultural social-ecological system (SES), which began development in 1852, and today generates more than 30% of the SLV revenue. The diversions of <span class="hlt">Rio</span> <span class="hlt">Grande</span> water for irrigation in the SLV have had a disproportionate impact on the downstream portion of the river. These diversions caused the flow to cease at Ciudad Juarez, Mexico in the late 1880s, creating international conflict. Similarly, low flows in New Mexico and Texas led to interstate conflict. Understanding changes in the URG-SLV that led to this event and the interactions among various drivers of change in the URG-SLV is a difficult task. One reason is that complex social-ecological systems are adaptive, contain feedbacks, emergent properties, cross-scale linkages, large-scale dynamics and non-linearities. Further, most analyses of SES to date have been qualitative, utilizing conceptual models to understand driver interactions. This study utilizes both qualitative and quantitative techniques to develop an innovative approach for analyzing driver interactions in the URG-SLV. Five drivers were identified for the URG-SLV social-ecological system: water (streamflow), water rights, climate, agriculture, and internal and external water policy. The drivers contained several longitudes (data aspect) relevant to the system, except water policy, for which only discreet events were present. Change point and statistical analyses were applied to the longitudes to identify quantifiable changes, to allow detection of cross-scale linkages between drivers, and presence of feedback cycles. Agricultural was identified as the driver signal. Change points for agricultural expansion defined four distinct periods: 1852--1923, 1924--1948, 1949--1978 and 1979</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AGUFM.U13B0072R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AGUFM.U13B0072R"><span>Infrastructure Improvements for Snowmelt Runoff Forecasting and Assessments of Climate Change Impacts on Water Supplies in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Rango, A.; Steele, C. M.; Demouche, L.</p> <p>2009-12-01</p> <p>In the Southwest US, the southern Rocky Mountains provide a significant orographic barrier to prevailing moisture-laden Westerly winds, which results in snow accumulation and melt, both vitally important to the region’s water resources. The inherent variability of meteorological conditions in the Southwest, during both snowpack buildup and depletion, requires improved spatially-distributed data. The population of ground-based networks (SNOTEL, SCAN, and weather stations) is sparse and does not satisfactorily represent the variability of snow accumulation and melt. Remote sensing can be used to supplement data from ground networks, but the most frequently available remotely sensed product with the highest temporal and spatial resolution, namely snow cover, only provides areal data and not snow volume. Fortunately, the Snowmelt Runoff Model(SRM), which was developed in mountainous regions of the world, including the <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin, accepts snow covered area as one of its major input variables along with temperature and precipitation. With the growing awareness of atmospheric warming and the southerly location of Southwest watersheds, it has become apparent that the effects of climate change will be especially important for Southwestern water users. The NSF-funded EPSCoR project “Climate Change Impacts on New Mexico’s Mountain Sources of Water” (started in 2009) has focused on improving hydrometeorological measurements, developing basin-wide and sub-basin snow cover mapping methods, generating snowmelt runoff simulations, forecasts, and long-term climate change assessments, and informing the public of the results through outreach and educational activities. Five new SNOTEL and four new SCAN sites are being installed in 2009-2010 and 12 existing basic SNOTEL sites are being upgraded. In addition, 30 automated precipitation gages are being added to New Mexico measurement networks. The first phase of snow mapping and modeling has focused on four sub basins</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sim/3350/pdf/sim3350.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sim/3350/pdf/sim3350.pdf"><span>Fish assemblage composition and mapped mesohabitat features over a range of streamflows in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span>, New Mexico, winter 2011-12, summer 2012</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Pearson, Daniel K.; Braun, Christopher L.; Moring, J. Bruce</p> <p>2016-01-21</p> <p>This report documents differences in the mapped spatial extents and physical characteristics of in-channel fish habitat evaluated at the mesohabitat scale during winter 2011–12 (moderate streamflow) and summer 2012 (low streamflow) at 15 sites on the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> in New Mexico starting about 3 kilometers downstream from Cochiti Dam and ending about 40 kilometers upstream from Elephant Butte Reservoir. The results of mesohabitat mapping, physical characterization, and fish assemblage surveys are summarized from the data that were collected. The report also presents general comparisons of physical mesohabitat data, such as wetted area and substrate type, and biological mesohabitat data, which included fish assemblage composition, species richness, <span class="hlt">Rio</span> <span class="hlt">Grande</span> silvery minnow relative abundance, and <span class="hlt">Rio</span> <span class="hlt">Grande</span> silvery minnow catch per unit effort.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1999/0203/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1999/0203/report.pdf"><span>U.S. Geological Survey middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin study; proceedings of the third annual workshop, Albuquerque, New Mexico, February 24-25, 1999</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bartolino, James R.</p> <p>1999-01-01</p> <p>Approximately 40 percent (about 600,000 people) of the total population of New Mexico lives within the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, which includes the City of Albuquerque. Ongoing analyses of the central portion of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin by the U.S. Geological Survey (USGS) in cooperation with the City of Albuquerque and other agencies have shown that ground water in the basin is not as readily accessible as earlier studies indicated. A more complete characterization of the ground-water resources of the entire Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin is hampered by a scarcity of data in the northern and southern areas of the basin. The USGS Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin study is a 5-year effort by the USGS and other agencies to improve the understanding of the hydrology, geology, and land-surface characteristics of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin. The primary objective of this study is to improve the understanding of the water resources of the basin. Of particular interest is to determine the extent of hydrologic connection between the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and the Santa Fe Group aquifer. Additionally, ground-water quality affects the availability of water supplies in the basin. Improving the existing USGS-constructed ground-water flow model of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin will integrate all the various tasks that improve our knowledge of the various components of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> water budget. Part of this improvement will be accompanied by extended knowledge of the aquifer system beyond the Albuquerque area into the northern and southern reaches of the basin. Other improvements will be based on understanding gained through process-oriented research and improved geologic characterization of the deposits. The USGS and cooperating agencies will study the hydrology, geology, and land-surface characteristics of the basin to provide the scientific information needed for water-resources management and for managers to plan for water supplies needed for a growing population. To facilitate exchange of</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007AGUSM.H53G..01A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007AGUSM.H53G..01A"><span>A Physical Assessment of the Opportunities for Improved Management of the Water Resources of the Bi-National <span class="hlt">Rio</span> <span class="hlt">Grande/Rio</span> Bravo Basin</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Aparicio, J.; McKinney, D.; Valdes, J.; Guitron, A.; Thomas, G.</p> <p>2007-05-01</p> <p>The hydro-physical opportunities for expanding the beneficial uses of the fixed water supply in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>/Bravo Basin to better satisfy an array of water management goals are examined. These include making agriculture more resilient to periodic conditions of drought, improving the reliability of supplies to cities and towns, and restoring lost environmental functions in the river system. This is a comprehensive, outcome-neutral, model- based planning exercise performed by some 20 technical, primarily non-governmental institutions from both countries, aimed at proposing strategies that can reduce future conflicts over water throughout the entire basin. The second track consists in generating a set of future water management scenarios that respond to the needs and objectives of the basin stakeholders in each segment and each country. An array of scenarios for improved water management has been developed for the lower <span class="hlt">Rio</span> <span class="hlt">Grande/Rio</span> Bravo basin in Texas and the Mexican state of Tamaulipas. Another set under development will focus on the <span class="hlt">Rio</span> Conchos and the El Paso/Juarez region. Eventually, scenarios will be generated such that will comprehend the entire basin on both sides of the border. These scenarios are the product of consultations with agricultural water districts, governmental organizations and environmental NGOs. They include strategies for reducing the physical losses of water in the system, conservation transfers, improvements in the operations of the Mexican and international reservoirs, improvements in environmental flow conditions, improvements in reliability of water supplies, and drought coping strategies.These scenarios will be evaluated for hydrologic feasibility by the basin-wide model and the gaming exercises. Modeling is necessary to understand how these options will affect the entire system and how they can be crafted to maximize the benefits and avoid unintended or uncompensated effects. The scenarios that have the potential to provide large</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1987/0122/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1987/0122/report.pdf"><span>Description of piezometer nests and water levels in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley near Albuquerque, Bernalillo County, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Anderholm, S.K.; Bullard, T.F.</p> <p>1987-01-01</p> <p>Twenty-four piezometers were installed from mid-October 1984 to mid-January 1985 in two sections of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> valley near Albuquerque, New Mexico. Each cross section is comprised of four piezometer nests and each nest is comprised of three piezometers completed at different depths. The purpose of this report is to describe the piezometers nests and present some of the water level data collected from the piezometers. The piezometers were drilled using the hydraulic rotary method. The piezometers were completed with 5 feet of 60-slot wire-wound stainless steel well screen and flush joint PVC well casing. The description of each piezometer nest consists of the location of the particular piezometer nest; a figure showing the location, depth altitude, and station identification number of the piezometers in each nest; and a driller 's log, geophysical logs, and description of the well cuttings from the deepest borehole in each piezometer nest. Water level altitudes generally increased from February until June 1985 in the piezometers in the <span class="hlt">Rio</span> Bravo section. Water level altitudes in piezometers completed at different depths in a particular nest are about the same in all of the <span class="hlt">Rio</span> Bravo nests and in the Montano 1 nest. In several of the piezometer nests, especially the Montano nests, water level altitudes decrease with depth. (USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2011/5207/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2011/5207/"><span>Survey of hydrologic models and hydrologic data needs for tracking flow in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, north-central New Mexico, 2010</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Tillery, Anne; Eggleston, Jack R.</p> <p>2012-01-01</p> <p>The six Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Pueblos have prior and paramount rights to deliveries of water from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> for their use. When the pueblos or the Bureau of Indian Affairs Designated Engineer identifies a need for additional flow on the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, the Designated Engineer is tasked with deciding the timing and amount of releases of prior and paramount water from storage at El Vado Reservoir to meet the needs of the pueblos. Over the last three decades, numerous models have been developed by Federal, State, and local agencies in New Mexico to simulate, understand, and (or) manage flows in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> upstream from Elephant Butte Reservoir. In 2008, the Coalition of Six Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin Pueblos entered into a cooperative agreement with the U.S. Geological Survey to conduct a comprehensive survey of these hydrologic models and their capacity to quantify and track various components of flow. The survey of hydrologic models provided in this report will help water-resource managers at the pueblos, as well as the Designated Engineer, make informed water-resource-management decisions that affect the prior and paramount water use. Analysis of 4 publicly available surface-water models and 13 publicly available groundwater models shows that, although elements from many models can be helpful in tracking flow in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, numerous data gaps and modeling needs indicate that accurate, consistent, and timely tracking of flow on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> could be improved. Deficient or poorly constrained hydrologic variables are sources of uncertainty in hydrologic models that can be reduced with the acquisition of more refined data. Data gaps need to be filled to allow hydrologic models to be run on a real-time basis and thus ensure predictable water deliveries to meet needs for irrigation, domestic, stock, and other water uses. Timeliness of flow-data reporting is necessary to facilitate real-time model simulation, but even daily data are sometimes difficult to</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23903922','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23903922"><span>[History of genetics in Brazil: a view from the Museu da Genética at the Universidade Federal do <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Souza, Vanderlei Sebastiao de; Dornelles, Rodrigo Ciconet; Coimbra Junior, Carlos E A; Santos, Ricardo Ventura</p> <p>2013-06-01</p> <p>This work addresses the context of the creation, as well as the structure and contents, of the Museum of Genetics (Museu da Genética), created in 2011 and located in the Department of Genetics of the Federal University of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Universidade Federal do <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul), in Porto Alegre, Brazil. The materials available at the Museum of Genetics are a rich resource for research on the history of genetics in Brazil (and especially the genetics of human populations) beginning with the second half of the twentieth century. Despite the prominence of the field of genetics in Brazil, little research has been done on this topic.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/29390','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/29390"><span>Investigation of rifting processes in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift using data from an unusually large earthquake swarm. Final report, October 1, 1992--September 30, 1993</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Sanford, A.; Balch, R.; Hartse, H.; House, L.</p> <p>1995-03-01</p> <p>Because the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rift is one of the best seismically instrumented rift zones in the world, studying its seismicity provides an exceptional opportunity to elucidate the active tectonic processes within continental rifts. Beginning on 29 November 1989, a 15 square km region near Bernardo, NM, produced the strongest and longest lasting sequence of earthquakes in the rift in 54 years. Our research focuses on the Bernardo swarm which occurred 40 km north of Socorro, New Mexico in the axial region of the central <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. Important characteristics concerning hypocenters, fault mechanisms, and seismogenic zones are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014EGUGA..16.6941G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014EGUGA..16.6941G"><span>Chemical composition and mineralogy of borate from <span class="hlt">Rio</span> <span class="hlt">Grande</span> deposit, Uyuni (Bolivia) as raw materials for industrial applications</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Guillen Vargas, Julio; Arancibia, Jony Roger Hans; Alfonso, Pura; Garcia-Valles, Maite; Parcerisa, David; Martinez, Salvador</p> <p>2014-05-01</p> <p>Bolivia has large tailings as a result of the historic and present-day Sn mining activity developed extensively in that country. Tailings produced in these mining activities have an appropriate composition to reprocess them and make silicate glass and glass-ceramics, obtaining the valorization of wastes and reducing the visual and chemical impact. Reprocessing the wastes to make glass and glass-ceramics prevents the leaching of heavy metals from those wastes because they are retained in the structure of the glass. Furthermore, an option to increase the economic value of these glasses is the introduction of boron and other additives to produce borosilicate glass. In this study a characterization of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> borate deposit for its use in the manufacture of borosilicate glass is presented. Mineralogy was determined by X-ray diffraction (XRD), and Fourier transforms infrared spectroscopy (FTIR); textures were observed by scanning electron microscopy (SEM) and chemical composition was determined by inductively coupled plasma mass spectrometry (ICP-MS). The <span class="hlt">Rio</span> <span class="hlt">Grande</span> borate deposit is located in an area of about 50 km2 close to the south of the Salar of Uyuni, in the Río <span class="hlt">Grande</span> de Lípez Delta. Borates occur in the contact between fluvio-deltaic and lacustrine sediments from water raising the surface by capillarity. The borates crop out in an extent area but towards the west they are covered by fluvio-deltaic sediments, which can be up to 2 m thick. These borates occur as lenses 50-100 m in diameter and layers up to 1 m thick. They usually form brittle nodules with a cotton-ball texture. Chemical composition of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> borates is CaO, 11.82-13.83 wt%; Na2O, 13.50-19.35 wt%; K2O, 0.05- 1.04 wt%; MgO, 0.42-1.46 wt%; B2O3, 36.21-42.60 wt%; SiO2, up to 0.53 wt% and SO2, up to 0.60 wt%. Trace elements are low: Sr content is between 151-786 ppm, Al 12-676 ppm, Mn between 1-17 ppm, As 2-10 ppm and Fe between 9-376 ppm. The most abundant borate mineral in this</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1999PalOc..14...84G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1999PalOc..14...84G"><span>Terrigenous Flux in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise Area during the Past 1500 ka: Evidence of Deepwater Advection or Rapid Response to Continental Rainfall Patterns?</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gingele, Franz X.; Schmieder, Frank; von Dobeneck, Tilo; Petschick, Rainer; Rühlemann, Carsten</p> <p>1999-02-01</p> <p>Surface sediment samples and three gravity cores from the eastern terrace of the Vema Channel, the western flank of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise, and the Brazilian continental slope were investigated for physical properties, grain size, and clay mineral composition. Discharge of the <span class="hlt">Rio</span> Doce is responsible for kaolinite enrichments on the slope south of 20° and at intermediate depths of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise. The long-distance advection of kaolinite with North Atlantic Deep Water from lower latitudes is of minor importance as evidenced by low kaolinite/chlorite ratios on the Mid-Atlantic Ridge. Cyclic variations of kaolinite/chlorite ratios in all our cores, with maxima in interglacials, are attributed to low- and high-latitude forcing of paleoclimate on the Brazilian mainland and the related discharge of the <span class="hlt">Rio</span> Doce. A long-term trend toward more arid and "glacial" conditions from 1500 ka to present is superimposed on the glacial-interglacial cyclicity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/928421','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/928421"><span>Polychlorinated Biphenyls (PCBs) in Catfish and Carp Collected from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Upstream and Downstream of Los Alamos National Laboratory: Revision 1</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Gilbert J. Gonzales Philip R. Fresquez</p> <p>2008-05-12</p> <p>Concern has existed for years that the Los Alamos National Laboratory (LANL), a complex of nuclear weapons research and support facilities, has released polychlorinated biphenyls (PCBs) to the environment that may have reached adjacent bodies of water through canyons that connect them. In 1997, LANL's Ecology Group began measuring PCBs in fish in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> upstream and downstream of ephemeral streams that cross LANL and later began sampling fish in Abiquiu and Cochiti reservoirs, which are situated on the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span> upstream and downstream of LANL, respectively. In 2002, we electroshocked channel catfish (Ictalurus punctatus) and common carp (Carpiodes carpio) in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> upstream and downstream of LANL and analyzed fillets for PCB congeners. We also sampled soils along the <span class="hlt">Rio</span> Chama and <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainages to discern whether a background atmospheric source of PCBs that could impact surface water adjacent to LANL might exist. Trace concentrations of PCBs measured in soil (mean = 4.7E-05 {micro}g/g-ww) appear to be from background global atmospheric sources, at least in part, because the bimodal distribution of low-chlorinated PCB congeners and mid-chlorinated PCB congeners in the soil samples is interpreted to be typical of volatilized PCB congeners that are found in the atmosphere and dust from global fallout. Upstream catfish (n = 5) contained statistically (P = 0.047) higher concentrations of total PCBs (mean = 2.80E-02 {micro}g/g-ww) than downstream catfish (n = 10) (mean = 1.50E-02 {micro}g/g-ww). Similarly, upstream carp (n = 4) contained higher concentrations of total PCBs (mean = 7.98E-02 {micro}g/g-ww) than downstream carp (n = 4) (3.07E-02 {micro}g/g-ww); however, the difference was not statistically significant (P = 0.42). The dominant PCB homologue in all fish samples was hexachlorobiphenyls. Total PCB concentrations in fish in 2002 are lower than 1997; however, differences in analytical methods and other uncertainties exist. A</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/19629573','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/19629573"><span>Spatial distribution of antimony and arsenic levels in Manadas Creek, an urban tributary of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Laredo, Texas.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Baeza, Marcia; Ren, Jianhong; Krishnamurthy, Sushma; Vaughan, Thomas C</p> <p>2010-02-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> and its tributaries represent a critical water source for both the human population and the ecological resources of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainage basin. Manadas Creek, an urban tributary of the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, is located in an industrialized area of Laredo, Texas, where warehouses, a major railroad, and a decommissioned antimony (Sb) smelter are located. Previous studies have found that the creek water is contaminated with heavy metals such as Sb and arsenic (As). However, data on the metal distribution in this creek are very limited. Herein, water and sediment core samples were collected from six sites along the creek in February, April, and May 2008. Samples were analyzed for dissolved and total metals in water, total metals in sediments, and available (soluble-exchangeable, surface adsorbed, and organically bound) fractions of metals associated with the sediments. Results show that concentrations of Sb in the water and sediment samples were significantly lower at the upstream control site compared to the two sites located near the decommissioned smelter. Decreasing levels of Sb were found at the sites located downstream. The As levels in the sediment remained constant at different depths, whereas Sb varied significantly. A high level, 420 mg/kg, of sediment Sb was found at the maximum sediment depth of 35.0 cm sampled. In addition, 65.7-76.9% Sb and 80.3-85.6% As were in their residual form, 15.0-22.5% Sb and 6.2-11.4% As were bound to organic matter, and the remaining As and Sb were in the soluble and surface adsorbed fractions. Pearson correlation analyses indicated that the distribution of Sb was only moderately correlated to iron and nickel in the sediment and its correlation with the sediment properties measured was insignificant. Cluster analyses only grouped the two Sb isotopes together for the sediments collected in May, indicating that sources other than natural occurrence were associated with Sb. The high level of sediment Sb observed indicates</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFM.V51A4728C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFM.V51A4728C"><span>High Precision 40Ar/39Ar Geochronology of Servilleta Basalts of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Gorge, New Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cosca, M. A.; Thompson, R. A.; Turner, K. J.</p> <p>2014-12-01</p> <p>New geologic mapping and high-precision 40Ar/39Ar geochronology within the Taos Plateau in northern New Mexico indicate a period of vigorous volcanic activity between ~5.5 and ~1 Ma. Over 50 visible volcanic centers formed during this time together with an unresolved number of vents, fissures, and volcanic centers buried by intercalated volcanic rock and sedimentary basin fill. Defining the volcanic stratigraphy is essential for models of regional groundwater flow and for understanding the geologic evolution of the Pliocene to Recent <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift. A spectacular stratigraphic section of volcanic rock related to <span class="hlt">Rio</span> <span class="hlt">Grande</span> rifting is visible from the High Bridge, just a few miles outside of Taos, NM, where a 240 m canyon is incised through the basal, middle, and upper Servilleta basalt flow packages (Dungan et al., 1984). Fresh basalt from a vertical transect of the canyon near the High Bridge were analyzed by 40Ar/39Ar methods on ~3 mm3 rock fragments using an ARGUS VI mass spectrometer and the resulting 40Ar/39Ar ages define a precise emplacement chronology of the entire stratigraphic section. The basal flow package records ages of 4.78 ± 0.03 Ma (relative to FCT sanidine = 28.204 Ma; all errors 2 sigma) at river level, 4.77 ± 0.03 Ma at mid flow, and 4.50 ± 0.04 Ma at the top of the flow. The middle flow package records ages of 4.11 ± 0.03 Ma at the base of the flow, 4.08 ± 0.04 Ma mid flow, and 4.02 ± 0.06 Ma at the top of the flow. The upper basalt package records ages of 3.69 ± 0.06 Ma at the base of the flow and 3.59 ± 0.08 Ma at the top of the flow. These data support rapid effusion of voluminous lava flows on time scales of 100-200 ka. Two reddish paleosols separating the Servilleta packages each developed during a 400 ka period of volcanic quiescence. First order calculations using exposed lava thicknesses in the gorge and areal exposures suggest each flow package represents emplacement of ~200 km3 of basalt. Because no exposed vent of</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70024020','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70024020"><span>Annual suspended sediment and trace element fluxes in the Mississippi, Columbia, Colorado, and <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainage basins</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Horowitz, A.J.; Elrick, K.A.; Smith, J.J.</p> <p>2001-01-01</p> <p>Suspended sediment, sediment-associated, total trace element, phosphorus (P), and total organic carbon (TOC) fluxes were determined for the Mississippi, Columbia, <span class="hlt">Rio</span> <span class="hlt">Grande</span>, and Colorado Basins for the study period (the 1996, 1997, and 1998 water years) as part of the US Geological Survey's redesigned National Stream Quality Accounting Network (NASQAN) programme. The majority (??? 70%) of Cu, Zn, Cr, Ni, Ba, P, As, Fe, Mn, and Al are transported in association with suspended sediment; Sr transport seems dominated by the dissolved phase, whereas the transport of Li and TOC seems to be divided equally between both phases. Average dissolved trace element levels are markedly lower than reported during the original NASQAN programme; this seems due to the use of 'clean' sampling, processing, and analytical techniques rather than to improvements in water quality. Partitioning between sediment and water for Ag, Pb, Cd, Cr, Co, V, Be, As, Sb, Hg, and Ti could not be estimated due to a lack of detectable dissolved concentrations in most samples. Elevated suspended sediment-associated Zn levels were detected in the Ohio River Basin and elevated Hg levels were detected in the Tennessee River, the former may affect the mainstem Mississippi River, whereas the latter probably do not. Sediment-associated concentrations of Ag, Cu, Pb, Zn, Cd, Cr, Co, Ba, Mo, Sb, Hg, and Fe are markedly elevated in the upper Columbia Basin, and appear to be detectable (Zn, Cd) as far downstream as the middle of the basin. These elevated concentrations seem to result from mining and/or mining-related activities. Consistently detectable concentrations of dissolved Se were found only in the Colorado River Basin. Calculated average annual suspended sediment fluxes at the mouths of the Mississippi and <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basins were below, whereas those for the Columbia and Colorado Basins were above previously published annual values. Downstream suspended sediment-associated and total trace element fluxes</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/wri034131/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/wri034131/"><span>Geochemical characterization of ground-water flow in the Santa Fe Group aquifer system, Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Plummer, L. Niel; Bexfield, Laura M.; Anderholm, Scott K.; Sanford, Ward E.; Busenberg, Eurybiades</p> <p>2004-01-01</p> <p>and sulfur hexafluoride from 288 wells and springs in parts of the Santa Fe Group aquifer system. The surface-water data collected as part of this study include monthly measurements of major- and minor-element chemistry (30 elements), oxygen-18 and deuterium content of water, chlorofluorocarbons, and tritium content at 14 locations throughout the basin. Additional data include stable isotope analyses of precipitation and of ground water from City of Albuquerque production wells collected and archived from the early 1980?s, and other data on the chemical and isotopic composition of air, unsaturated zone air, plants, and carbonate minerals from throughout the basin. The data were used to identify 12 sources of water to the basin, map spatial and vertical extents of ground-water flow, map water chemistry in relation to hydrogeologic, stratigraphic, and structural properties of the basin, determine radiocarbon ages of ground water, and reconstruct paleo-environmental conditions in the basin over the past 30,000 years. The data indicate that concentrations of most elements and isotopes generally parallel the predominant north to south direction of ground-water flow. The radiocarbon ages of dissolved inorganic carbon in ground water range from modern (post-1950) to more than 30,000 years before present, and appear to be particularly well defined in the predominantly siliciclastic aquifer system. Major sources of water to the basin include (1) recharge from mountains along the north, east and southwest margins (median age 5,000-9,000 years); (2) seepage from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and <span class="hlt">Rio</span> Puerco (median age 4,000-8,000 years), and from Abo and Tijeras Arroyos (median age 3,000-9,000 years); (3) inflow of saline water along the southwestern basin margin (median age 20,000 years); and (4) inflow along the northern basin margin that probably represents recharge from the Jemez Mountains during the last glacial period (median age 20,000 years). Water recharged from the Jemez Mountains</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_23 --> <div id="page_24" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="461"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/bul/0707/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/bul/0707/report.pdf"><span>Guidebook of the Western United States: Part E - The Denver & <span class="hlt">Rio</span> <span class="hlt">Grande</span> Western Route</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Campbell, Marius R.</p> <p>1922-01-01</p> <p> correctly the basis of its development, and above all to appreciate keenly the real value of the country he looks out upon, not as so many square miles of territory represented on the map in a railroad folder by meaningless spaces, but rather as land - real estate, if you please - varying widely in present appearance because differing largely in its history, and characterized by even greater variation in values because possessing diversified natural resources. One region may be such as to afford a livelihood for only a pastoral people; another may present opportunity for intensive agriculture; still another may contain hidden stores of mineral wealth that may attract large industrial development; and, taken together, these varied resources afford, the promise of long-continued prosperity for this or that State. Items of interest in civic development or references to significant epochs in the record of discovery and settlement may be interspersed. with explanations of mountain and valley or statements of geologic history. In a broad way the story of the West is a unit, and every chapter should be told in order to meet fully the needs of the tourist who aims to understand all that he sees. To such a traveler-reader this series of guidebooks is addressed. To this interpretation of our own country the United States Geological Survey brings the accumulated data of decades of pioneering investigation, and the present contribution is only one type of return to the public which has supported this scientific work under the Federal Government - a by-product of research. In the preparation of the description of the country traversed by the Denver & <span class="hlt">Rio</span> <span class="hlt">Grande</span> Western Route the geographic and geologic information already published as well as unpublished material in the possession of the Geological Survey has been utilized, but to supplement this material Mr. Campbell made a field examination of the entire route in 1915-1916. Information has been furnished by others,</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1997/0116/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1997/0116/report.pdf"><span>U.S. Geological Survey Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin Study; proceedings of the first annual workshop, Denver, Colorado, November 12-14, 1996</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bartolino, J. R.</p> <p>1997-01-01</p> <p>Approximately 40 percent (about 600,000 people) of the total population of New Mexico lives within the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, which includes the City of Albuquerque. Ongoing analyses of the central portion of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin by the U.S. Geological Survey (USGS) in cooperation with the City of Albuquerque and other cooperators have shown that ground water in the basin is not as readily accessible as earlier studies indicated. A more complete characterization of the ground-water resources of the entire Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin is hampered by a scarcity of data in the northern and southern areas of the basin. The USGS Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin Study is a 5-year effort by the USGS and other agencies to improve the understanding of the hydrology, geology, and land-surface characteristics of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin. The primary objective of this study is to improve the understanding of the water resources of the basin. Of particular interest is to determine the extent of hydrologic connection between the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and the Santa Fe Group aquifer. Additionally, ground-water quality affects the availability of water supplies in the basin. Improving the existing USGS- constructed ground-water flow model of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin will integrate all the various tasks that improve our knowledge of the various components of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> water budget. Part of this improvement will be accompanied by extended knowledge of the aquifer system beyond the Albuquerque area into the northern and southern reaches of the basin. Other improvements will be based on understanding gained through process-oriented research and improved geologic characterization of the deposits. The USGS will study the hydrology, geology, and land-surface characteristics of the basin to provide the scientific information needed for water- resources management and for managers to plan for water supplies needed for a growing population. To facilitate exchange of information among the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2011-title33-vol1/pdf/CFR-2011-title33-vol1-sec80-850.pdf','CFR2011'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2011-title33-vol1/pdf/CFR-2011-title33-vol1-sec80-850.pdf"><span>33 CFR 80.850 - Brazos River, TX to the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, TX.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2011&page.go=Go">Code of Federal Regulations, 2011 CFR</a></p> <p></p> <p>2011-07-01</p> <p>..., San Bernard River, Cedar Lakes, Brown Cedar Cut, Colorado River, Matagorda Bay, Cedar Bayou, Corpus... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Brazos River, TX to the <span class="hlt">Rio</span>... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.850 Brazos River,...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2013-title33-vol1/pdf/CFR-2013-title33-vol1-sec80-850.pdf','CFR2013'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2013-title33-vol1/pdf/CFR-2013-title33-vol1-sec80-850.pdf"><span>33 CFR 80.850 - Brazos River, TX to the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, TX.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2013&page.go=Go">Code of Federal Regulations, 2013 CFR</a></p> <p></p> <p>2013-07-01</p> <p>..., San Bernard River, Cedar Lakes, Brown Cedar Cut, Colorado River, Matagorda Bay, Cedar Bayou, Corpus... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Brazos River, TX to the <span class="hlt">Rio</span>... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.850 Brazos River,...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2012-title33-vol1/pdf/CFR-2012-title33-vol1-sec80-850.pdf','CFR2012'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2012-title33-vol1/pdf/CFR-2012-title33-vol1-sec80-850.pdf"><span>33 CFR 80.850 - Brazos River, TX to the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, TX.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2012&page.go=Go">Code of Federal Regulations, 2012 CFR</a></p> <p></p> <p>2012-07-01</p> <p>..., San Bernard River, Cedar Lakes, Brown Cedar Cut, Colorado River, Matagorda Bay, Cedar Bayou, Corpus... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Brazos River, TX to the <span class="hlt">Rio</span>... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.850 Brazos River,...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2014-title33-vol1/pdf/CFR-2014-title33-vol1-sec80-850.pdf','CFR2014'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2014-title33-vol1/pdf/CFR-2014-title33-vol1-sec80-850.pdf"><span>33 CFR 80.850 - Brazos River, TX to the <span class="hlt">Rio</span> <span class="hlt">Grande</span>, TX.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2014&page.go=Go">Code of Federal Regulations, 2014 CFR</a></p> <p></p> <p>2014-07-01</p> <p>..., San Bernard River, Cedar Lakes, Brown Cedar Cut, Colorado River, Matagorda Bay, Cedar Bayou, Corpus... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Brazos River, TX to the <span class="hlt">Rio</span>... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.850 Brazos River,...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/14509840','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/14509840"><span>Changes in soft-bottom macrobenthic assemblages after a sulphuric acid spill in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Harbor (RS, Brazil).</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bemvenuti, C E; Rosa-Filho, J S; Elliott, M</p> <p>2003-05-01</p> <p>The structure of macrobenthic assemblages in <span class="hlt">Rio</span> <span class="hlt">Grande</span> Harbor was analyzed during and after a sulphuric acid spill in August 1988. Five stations were sampled four times between September 1988 and March 1999. At each station, three samples were taken using a van Veen grab (0.078 m2). A total of 22 taxa were collected including Crustacea (9 spp.), Polychaeta (7 spp.), Mollusca (3 spp.), Phoronida (1 sp.), Nemertinea (1 sp.), and Plathyelminthea (1 sp.). The macrobenthic assemblages suffered different impacts depending on station location and time: 1) immediate impact, i.e., during acid discharge, as at the station nearest (250 m) the acid spill source; 2) impact some time after the discharge, as at the station 500 m downstream from the acid spill source; and 3) absence of direct impact on the remaining sampling points, on the discharge area outer limit. The macrobenthic assemblage recovered six months after the sulphuric acid spill.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25271465','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25271465"><span>Study on coinfecting vector-borne pathogens in dogs and ticks in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gonçalves, Luiz Ricardo; Filgueira, Kilder Dantas; Ahid, Silvia Maria Mendes; Pereira, Josivânia Soares; Vale, André Mendes do; Machado, Rosangela Zacarias; André, Marcos Rogério</p> <p>2014-01-01</p> <p>Since dogs presenting several vector borne diseases can show none or nonspecific clinical signs depending on the phase of infection, the assessment of the particular agents involved is mandatory. The present study aimed to investigate the presence of Babesia spp., Ehrlichia spp., Anaplasma spp., Hepatozoon spp. and Leishmania spp. in blood samples and ticks, collected from two dogs from <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte showing suggestive tick-borne disease by using molecular techniques. DNA of E. canis, H. canis and L. infantum were detected in blood samples and R. sanguineus ticks collected from dogs. Among all samples analyzed, two showed the presence of multiple infections with E. canis, H. canis and L. infantum chagasi. Here we highlighted the need for molecular differential diagnosis in dogs showing nonspecific clinical signs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70073336','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70073336"><span>Hydrologic budget of the late Oligocene Lake Creede and the evolution of the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> drainage system</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Barton, Paul B.; Steven, Thomas A.; Hayba, Daniel O.</p> <p>2000-01-01</p> <p>The filling history, hydrologic budget, and geomorphic development of ancient Lake Creede and its tributary basin are evaluated to determine the factors that controlled its character. The lake filled the Creede caldera that formed in the late Oligocene as a consequence of the eruption of the Snowshoe Mountain Tuff. The caldera's sedimentary fill accumlated to a depth of about 1.26 km and had a volume of about 89 km3. The highest lake level was ~3300 m (10,800 ft) present altitude before it drained eastward across a broad volcanic plateau as the ancestral <span class="hlt">Rio</span> <span class="hlt">Grande</span>. A tributary canyon several hundred meters deep was cut into hard rhyolite in the north wall of the caldera before the lake was more than half full; its presence demonstrates that ancient Lake Creede filled slowly and thus occupied a long-lived, closed basin. The slow filling rate is incompatible with the present water flux through the Creede caldera basin, because such a flow would fill the basin geologically instantaneously. This mismatch, together with the recognition that the Oligocene climate was similar to that of today, forces the reexamination of the hydrologic and geomorphic history of the caldera. That appraisal shows that the caldera cannot have resurged rapidly immediately after caldera collapse, and that ancient watershed must have been lass than half as large as the present upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin. The ancient lake had a more or less constant surface area of about 200 km2 that approximated a steady-state condition between inflow and evaporation. Although the lake level fluctuated with climatic variations, its surface elevation steadily climbed as sediment accumulated, accelerating as resurgance and dome growth usurped spacewithin the basin. It could have had one playa stage early in its development and another after the basin had nearly filled with sediment, but there is no direct evidence for either. At least the lower half of the sedimentary column (the part sampled by the scientific</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26816176','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26816176"><span>[Maternal near misses and health inequalities: an analysis of contextual determinants in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Rosendo, Tatyana Maria Silva de Souza; Roncalli, Angelo Giuseppe</p> <p>2016-01-01</p> <p>The scope of this study was to identify socioeconomic contextual and health care factors in primary care associated with maternal near misses and their marker conditions. This is an ecological study that used aggregated data of 63 clusters formed by the municipalities of State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Norte, Brazil, using the Skater method of area regionalization, as the unit of analysis. The ratio of maternal near misses and their marker conditions were obtained from the Hospital Information System of the Brazilian Unified Health System. In multiple linear regression analysis, there was a significant association between maternal near misses and variables of poverty and poor primary health care. Hypertensive disorders were also associated with poverty and poor primary care and the occurrence of hemorrhaging was associated with infant mortality. It was observed that the occurrence of maternal near misses is linked to unfavorable socioeconomic conditions and poor quality health care that are a reflection of public policies that accentuate health inequalities.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004AGUFM.U53A0713R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004AGUFM.U53A0713R"><span>Competing Interests and Concerns in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin: Mountain Hydrology, Desert Ecology, Climate Change, and Population Growth</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Rango, A.</p> <p>2004-12-01</p> <p>In the mountainous American Southwest, the <span class="hlt">Rio</span> <span class="hlt">Grande</span> basin is a prime example of how conflicts, misconceptions, and competition regarding water can arise in arid and semi-arid catchments. Much of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> runoff originates from snow fields in the San Juan Mountains of southern Colorado and the Sangre De Cristo Mountains of northern New Mexico, far from population centers. Large and rapidly growing cities, like Albuquerque, Las Cruces, El Paso, and Juarez, are located along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> where it flows through the Chihuahuan Desert, the largest desert in North America(two NSF Long Term Ecological Research sites are located in the desert portion of the basin). As a result, the importance of snowmelt, which makes up 50-75% or more of the total streamflow in sub-basins above Elephant Butte Reservoir(in south central New Mexico) is hardly known to the general public. Streamflow below Elephant Butte Reservoir is rainfall driven and very limited, with the lower basin receiving only 170-380 mm of precipitation annually, most of it occurring during the months of July-September. Extreme events, such as drought and flooding, are not unusual in arid basins, and they are of increasing concern with regard to changes in frequency of such events under the impending conditions of climate change. Current water demands in the basin already exceed the water supply by 15% or more, so streamflow forecasts(especially from snowmelt runoff) are extremely valuable for efficient water management as well as for proper apportionment of water between Colorado, New Mexico, and Texas under the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Compact of 1938 and between the U.S. and Mexico under the Treaty of 1906. Other demands on the water supply include Indian water rights, flood regulation, irrigated agriculture, municipal and industrial demands, water quality, riverine and riparian habitat protection, endangered and threatened species protection, recreation, and hydropower. To assess snow accumulation and cover and to</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/16075945','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/16075945"><span>An assessment of water quality and microbial risk in <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin in the United States-Mexican border region.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ryu, Hodon; Alum, Absar; Alvarez, Maria; Mendoza, Jose; Abbaszadegan, Morteza</p> <p>2005-06-01</p> <p>Increased reliance of urban populations on <span class="hlt">Rio</span> <span class="hlt">Grande</span> water has necessitated an expanded microbial surveillance of the river to help identify and evaluate sources of human pathogens, which could pose a public health risk. The objectives of this study were to investigate microbial and chemical water quality in <span class="hlt">Rio</span> <span class="hlt">Grande</span> water and to perform risk assessment analyses for Cryptosporidium. No oocysts in any of the ten-litre samples were detected. However, the limit of detection in the water samples ranged between 20 and 200 oocysts/100 L. The limits of detection obtained in this study would result in one to two orders of magnitude higher risk of infection for Cryptosporidium than the U.S.EPA annual acceptable risk level of 10(-4). The bacterial data showed the significance of animal farming and raw sewage as sources of fecal pollution. Male specific and somatic coliphages were detected in 52% (11/21) and 62% (24/39) of the samples, respectively. Somatic coliphages were greater by one order of magnitude, and were better correlated with total (r2 = 0.6801; p < or = 0.05) and fecal coliform bacteria (r2 = 0.7366; p < or = 0.05) than male specific coliphages. The dissolved organic carbon (DOC) and specific ultraviolet absorbance (SUVA) values ranged 2.58-5.59mg/L and 1.23-2.29 m(-1) (mg/I)(-1), respectively. Low SUVA values of raw water condition make it difficult to remove DOC during physical and chemical treatment processes. The microbial and chemical data provided from this study can help drinking water utilities to maintain balance between greater microbial inactivation and reduced disinfection by-products (DBPs) formation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/561963','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/561963"><span>Trace-element accumulation by Hygrohypnum ochraceum in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, Colorado and New Mexico, USA</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Carter, L.F.; Porter, S.D.</p> <p>1997-12-01</p> <p>Accumulation of 12 trace elements by transplanted aquatic bryophytes (Hygrohypnum ochraceum) was determined at 13 sites in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and tributary streams in southern Colorado and northern New Mexico as part of the US Geological Survey`s National Water-Quality Assessment Program. The purposes of the study were to determine the spatial distribution of trace elements in relation to land-use practices in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, compare accumulation rates of metals in bryophytes at sites contaminated by trace elements, and evaluate transplanted aquatic bryophytes as a tool for examining the bioavailability of trace elements in relation to concentrations in water and bed sediment. Concentrations of Cd, Cu, Pb, and Zn in bryophytes, water, and bed sediment were significantly higher at sites that receive drainage from mining areas than at sites near agricultural or urban activities. Concentrations of most trace elements were lower in a tributary stream below an urban source than at sites near mining or agricultural use. Concentrations of Cu and Zn in bryophytes correlated with concentrations in water and bed sediment. In addition, bryophyte concentrations of As, Cd, and Pb correlated with concentrations in bed sediment. Transplanted bryophytes can provide an indication of bioavailability. Rates of accumulation were related to the magnitude of ambient trace-element concentrations; maximal uptake occurred during the first 10 d of exposure. Trace-element concentrations in transplanted bryophytes could potentially be used to predict water and sediment concentrations that represent an integration of conditions over short to intermediate lengths of time, rather than instantaneous conditions as measured using water samples.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70019153','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70019153"><span>Trace-element accumulation by Hygrohypnum ochraceum in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, Colorado and New Mexico, Usa</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Carter, L.F.; Porter, S.D.</p> <p>1997-01-01</p> <p>Accumulation of 12 trace elements by transplanted aquatic bryophytes (Hygrohypnum ochraceum) was determined at 13 sites in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and tributary streams in southern Colorado and northern New Mexico as part of the U.S. Geological Survey's National Water-Quality Assessment Program. The purposes of the study were to determine the spatial distribution of trace elements in relation to land-use practices in the upper <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, compare accumulation rates of metals in bryophytes at sites contaminated by trace elements, and evaluate transplanted aquatic bryophytes as a tool for examining the bioavailability of trace elements in relation to concentrations in water and bed sediment. Concentrations of Cd, Cu, Pb, and Zn in bryophytes, water, and bed sediment were significantly higher at sites that receive drainage from mining areas than at sites near agricultural or urban activities. Concentrations of most trace elements were lower in a tributary stream below an urban source than at sites near mining or agricultural use. Concentrations of Cu and Zn in bryophytes correlated with concentrations in water and bed sediment. In addition, bryophyte concentrations of As, Cd, and Pb correlated with concentrations in bed sediment. Transplanted bryophytes can provide an indication of bioavailability. Rates of accumulation were related to the magnitude of ambient trace-element concentrations; maximal uptake occurred during the first 10 d of exposure. Trace-element concentrations in transplanted bryophytes could potentially be used to predict water and sediment concentrations that represent an integration of conditions over short to intermediate lengths of time, rather than instantaneous conditions as measured using water samples.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70031036','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70031036"><span>Relative susceptibility and effects on performance of <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout and rainbow trout challenged with Myxobolus cerebralis</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>DuBey, R.J.; Caldwell, C.A.; Gould, W.R.</p> <p>2007-01-01</p> <p>We evaluated the susceptibility of <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout (RGCT) Oncorhynchus clarkii virginalis to infection by Myxobolus cerebralis in a laboratory experiment. In the same experiment, rainbow trout (RBT) O. mykiss were similarly exposed to M. cerebralis as a reference of known sensitivity to the parasite. Treatments consisting of six parasite concentrations (0, 50, 100, 250, 500, and 1,000 triactinomyxons [TAMS] per fish) were randomized within a complete block design using RGCT and RBT fry beginning at 60 d posthatch (600 degree-days at 10??C). The laboratory experiment was terminated at 130 d postexposure (1,900 degree-days at 10??C). Diagnostic metrics included clinical signs (behavioral and black tail), survival, myxospore counts, histology, and a swimming performance challenge. Clinical signs of whirling disease were observed within both species at 500 and 1,000 TAMs/fish by 66 d postexposure to the disease. <span class="hlt">Rio</span> <span class="hlt">Grande</span> cutthroat trout exhibited significantly lower survival (50% cumulative mortality at 1,000 TAMs/fish) and a significant concentration response compared with RBT (8% cumulative mortality at 1,000 TAMs/fish). Histological scoring of cranial sections using a 0-5 scale of increasing pathogenic effect revealed greater disease severity in RGCT (3.20) than in RBT (2.43) at 100 TAMs/fish but no difference at 1,000 TAMs/fish (4.15 and 4.12, respectively). Swimming performance revealed detectably lower critical swimming speed in both RGCT and RBT in relation to increased parasite concentrations, the RGCT exhibiting detectably lower critical swimming speeds than the RBT at increased parasite concentration. If M. cerebralis were to spread to areas supporting RGCT, population-level effects may occur. ?? Copyright by the American Fisheries Society 2007.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017EGUGA..19..814K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017EGUGA..19..814K"><span>Reconstruction of Paleoceanographic Conditions in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise Area, western South Atlantic: Evidence from Benthic Foraminiferal Data</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kuleshova, Liubov; Ovsepyan, Ekaterina</p> <p>2017-04-01</p> <p>Sediment core AI-3321 (30°56.85' S, 38°02.45' W, 2969 m water depth, 293 m length) collected from the western slope of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise was studied to count and identify benthic foraminifers in the >100 μm size fraction. Available information of the ecological preferences of benthic foraminiferal assemblages was used to reconstruct sea-surface bioproductivity and oxygenation conditions near the bottom during warm periods: Holocene, MIS 5e and MIS 7. A total of more than 100 species have been identified. They were classified according to their microhabitat preferences. All studied samples are characterized by a high abundance of calcareous epifaunal - shallow infaunal species together with low percentages of agglutinated taxa. Species diversity was described using several diversity indices that demonstrate similar variability during MIS 5 and 7 and an opposite changes during MIS 1. Cluster and Q-mode factor analysis were applied to establish dominant assemblages and major trends of foraminiferal variability. The assemblages (Factors I, II and III) are characterized by maximal scores of Epistominella exigua, Alabaminella weddellensis and Globocassidulina subglobosa, respectively. These opportunistic species are associated with seasonal supply of fresh, labile organic matter to the sea floor, and also prefer high oxygen concentrations in the bottom waters. In contrast to diversity indices, factor I, II and III do not demonstrate similar distribution throughout the studied intervals. This might be related to different combinations of amount and quality of organic matter supplied to the sea floor and corresponding oxygen content near the seafloor on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Rise during Holocene, MIS 5e and MIS 7. Accessory foraminiferal taxa thriving in well-oxygenated conditions and being capable to adapt to pulsed food supply (Oridorsalis umbonatus, Pullenia bulloides, Ioanella tumidula, Cibicidoides wuellerstorfi, Quinquelocilina spp., Pyrgo spp.) also occur throughout</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2006/1120/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2006/1120/"><span>Magnetotelluric data collected near geophysically logged boreholes in the Espa?ola and Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> basins, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Williams, Jackie M.; Rodriguez, Brian D.</p> <p>2006-01-01</p> <p>The Santa Fe region is growing rapidly. The Santa Fe Group aquifer in the Espa?ola Basin is the main source of municipal water for the region, and water shortfalls could have serious consequences. Future growth and land management in the region depend on accurate assessment and protection of the region's ground-water resources. An important issue in managing the ground-water resources is a better understanding of the hydrogeology of the Tertiary Santa Fe Group. The Santa Fe Group includes the sedimentary deposits that fill the <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift and contain the principal ground-water aquifers. The U.S. Geological Survey (USGS) is conducting a series of multidisciplinary studies of the Espa?ola Basin in northern New Mexico. Detailed geologic mapping, high-resolution airborne magnetic surveys, electromagnetic surveys, and hydrologic, lithologic, and hydro-geochemical data are being used to better understand the aquifer systems. Magnetotelluric (MT) surveys were completed as part of these studies. The primary purpose of the MT surveys was to map changes in electrical resistivity with depth that are related to differences in various rock types that help control the properties of aquifers in the region. Resistivity modeling of the MT data can be used to investigate buried structures related to the basic geologic framework of the study area. The purpose of this report is to release MT sounding data collected near geophysically logged boreholes in the study area, including the nearby Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin. This MT data can be used in subsequent resistivity modeling. No interpretation of the data is included in this report.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70016185','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70016185"><span>Distribution and transport of sediment-bound metal contaminants in the <span class="hlt">rio</span> <span class="hlt">grande</span> de tarcoles, costa rica (Central America)</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Fuller, C.C.; Davis, J.A.; Cain, D.J.; Lamothe, P.J.; Fries Fernandez, T.L.G.; Vargas, J.A.; Murillo, M.M.</p> <p>1990-01-01</p> <p>A reconnaissance survey of the extent of metal contamination in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Tarcoles river system of Costa Rica indicated high levels of chromium (Cr) in the fine-grain bed sediments (83 times Cr background or 3000->5000 ??g/g). In the main channel of the river downstream of the San Jose urban area, Cr contamination in sediments was 4-6 times background and remained relatively constant over 50 km to the mouth of the river. Sediment from a mangrove swamp at the river mouth had Cr levels 2-3 times above background. Similar patterns of dilution were observed for lead (Pb) and zinc (Zn) sediment contamination, although the contamination levels were lower. The high affinity of Cr towards particulate phases, probably as Cr(III), allows the use of Cr contamination levels for delineating regions of deposition of fine-grained sediments and dilution of particle associated contaminants during transport and deposition.A reconnaissance survey of the extent of metal contamination in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Tarcoles river system of Costa Rica indicated high levels of chromium (Cr) in the fine-grain bed sediments (83 times Cr background or 3000->5000 ??g/g). In the main channel of the river downstream of the San Jose urban area, Cr contamination in sediments was 4-6 times background and remained relatively constant over 50 km to the mouth of the river. Sediments from a mangrove swamp at the river mouth had Cr levels 2-3 times above background. Similar patterns of dilution were observed for lead (Pb) and zinc (Zn) sediment contamination, although the contamination levels were lower. The high affinity of Cr towards particulate phases, probably as Cr(III), allows the use of Cr contamination levels for delineating regions of deposition of fine-grained sediments and dilution of particle associated contaminants during transport and deposition.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70034431','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70034431"><span>Stratigraphic, sedimentologic, and dendrogeomorphic analyses of rapid floodplain formation along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in Big Bend National Park, Texas</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Dean, D.J.; Scott, M.L.; Shafroth, P.B.; Schmidt, J.C.</p> <p>2011-01-01</p> <p>The channel of the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the Big Bend region rapidly narrows during years of low mean and peak flow. We conducted stratigraphic, sedimentologic, and dendrogeomorphic analyses within two long floodplain trenches to precisely reconstruct the timing and processes of recent floodplain formation. We show that the channel of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> narrowed through the oblique and vertical accretion of inset floodplains following channel-widening floods in 1978 and 1990-1991. Vertical accretion occurred at high rates, ranging from 16 to 35 cm/yr. Dendrogeomorphic analyses show that the onset of channel narrowing occurred during low-flow years when channel bars obliquely and vertically accreted fine sediment. This initial stage of accretion occurred by both bedload and suspended-load deposition within the active channel. Vegetation became established on top of these fine-grained deposits during years of low peak flow and stabilized these developing surfaces. Subsequent deposition by moderate floods (between 1.5 and 7 yr recurrence intervals) caused additional accretion at rapid rates. Suspended-sediment deposition was dominant in the upper deposits, resulting in the formation of natural levees at the channel margins and the deposition of horizontally bedded, fining-upward deposits in the floodplain trough. Overall, channel narrowing and floodplain formation occurred through an evolution from active-channel to floodplain depositional processes. High-resolution dendrogeomorphic analyses provide the ability to specifically correlate the flow record to the onset of narrowing, the establishment of riparian vegetation, the formation of natural levees, and ultimately, the conversion of portions of the active channel to floodplains. ?? 2011 Geological Society of America.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AdG....22...59M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AdG....22...59M"><span>Mass movements in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (Quebrada de Humahuaca, Northwestern Argentina): a methodological approach to reduce the risk</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Marcato, G.; Pasuto, A.; Rivelli, F. R.</p> <p>2009-10-01</p> <p>Slope processes such as slides and debris flows, are among the main events that induce effects on the <span class="hlt">Rio</span> <span class="hlt">Grande</span> sediment transport capacity. The slides mainly affect the slope of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> river basin while debris and mud flows phenomena take place in the tributary valleys. In the past decades several mass movements occurred causing victims and great damages to roads and villages and therefore hazard assessment and risk mitigation is of paramount importance for a correct development of the area. This is also an urgent need since the Quebrada de Humahuaca was recently included in the UNESCO World Cultural Heritage. The growing tourism business may lead to an uncontrolled urbanization of the valley with the consequent enlargement of threatened areas. In this framework mitigation measures have to take into account not only technical aspects related to the physical behaviour of the moving masses but also environmental and sociological factors that could influence the effectiveness of the countermeasures. Mitigation of landslide effects is indeed rather complex because of the large extension of the territory and the particular geological and geomorphological setting. Moreover the necessity to maintain the natural condition of the area as prescribed by UNESCO, make this task even more difficult. Nowadays no in-depth study of the entire area exists, therefore an integrated and multidisciplinary investigation plan is going to be set up including geological and geomorphological investigations as well as archaeological and historical surveys. The better understanding of geomorphological evolution processes of the Quebrada de Humahuaca will bridge the gap between the necessity of preservation and the request of safety keeping of the recommendation by UNESCO.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_24 --> <div id="page_25" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="481"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70021634','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70021634"><span>Neogene basins of the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift: Partitioning and asymmetry inherited from Laramide and older uplifts</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Kellogg, K.S.</p> <p>1999-01-01</p> <p>Three asymmetric Neogene basins in the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift of New Mexico and Colorado - the San Luis basin, the upper Arkansas River graben, and the Blue River graben - are tilted toward large flanking normal faults and lie astride the similarly asymmetric Late Cretaceous-early Tertiary (Laramide) San Juan-San Luis, Sawatch, and Front Range-Gore Range uplifts, respectively. The steep, thrust-faulted side of each uplift is on the same side as the down-rotated side of each of the Neogene basins. In addition, the direction of stratal tilt changes northward across the Villa Grove accommodation zone from east in the San Luis basin to west in the upper Arkansas River graben. This accommodation zone coincides approximately with the northward change from the east-directed San Juan-San Luis uplift to the west-directed Sawatch uplift. These observations, supported by seismic-reflection studies across the San Luis basin and studies of several other superimposed pairs of rift basins and Laramide uplifts, suggest that the basin-bounding normal faults are listric and merge at depth with the older thrusts, which are also listric and root into the crust at about 15-16 km. The Blue River graben is complicated by lack of basin fill and a thrust history along the west side of the Gore Range that is at least as old as late Paleozoic. Nonetheless, the Neogene valley is demonstrably tilted west and lies astride an overall west-directed thrust system, similar to other thrust-and-basin relationships in the northern <span class="hlt">Rio</span> <span class="hlt">Grande</span> rift.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3768449','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3768449"><span>Quantification and molecular characterization of Salmonella isolated from food samples involved in salmonellosis outbreaks in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Mürmann, Lisandra; dos Santos, Maria Cecília; Longaray, Solange Mendes; Both, Jane Mari Corrêa; Cardoso, Marisa</p> <p>2008-01-01</p> <p>Data concerning the prevalence and populations of Salmonella in foods implicated in outbreaks may be important to the development of quantitative microbial risk assessments of individual food products. In this sense, the objective of the present study was to assess the amount of Salmonella sp. in different foods implicated in foodborne outbreaks in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul occurred in 2005 and to characterize the isolated strains using phenotypic and genotypic methods. Nineteen food samples involved in ten foodborne outbreaks occurred in 2005, and positive on Salmonella isolation at the Central Laboratory of the Health Department of the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, were included in this study. Food samples were submitted to estimation of Salmonella using the Most Probable Number (MPN) technique. Moreover, one confirmed Salmonella colony of each food sample was serotyped, characterized by its XbaI-macrorestriction profile, and submitted to antimicrobial resistance testing. Foods containing eggs, mayonnaise or chicken were contaminated with Salmonella in eight outbreaks. Higher counts (>107 MPN.g-1) of Salmonella were detected mostly in foods containing mayonnaise. The isolation of Salmonella from multiple food items in five outbreaks probably resulted from the cross-contamination, and the high Salmonella counts detected in almost all analyzed samples probably resulted from storing in inadequate temperature. All strains were identified as S. Enteritidis, and presented a unique macrorestriction profile, demonstrating the predominance of one clonal group in foods involved in the salmonellosis outbreaks. A low frequency of antimicrobial resistant S. Enteritidis strains was observed and nalidixic acid was the only resistance marker detected. PMID:24031261</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/wri02-4200/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/wri02-4200/"><span>Simulation of Ground-Water Flow in the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin Between Cochiti and San Acacia, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>McAda, Douglas P.; Barroll, Peggy</p> <p>2002-01-01</p> <p>This report describes a three-dimensional, finite difference, ground-water-flow model of the Santa Fe Group aquifer system within the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin between Cochiti and San Acacia, New Mexico. The aquifer system is composed of the Santa Fe Group of middle Tertiary to Quaternary age and post-Santa Fe Group valley and basin-fill deposits of Quaternary age. Population increases in the basin since the 1940's have caused dramatic increases in ground-water withdrawals from the aquifer system, resulting in large ground-water-level declines. Because the <span class="hlt">Rio</span> <span class="hlt">Grande</span> is hydraulically connected to the aquifer system, these ground-water withdrawals have also decreased flow in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>. Concern about water resources in the basin led to the development of a research plan for the basin focused on the hydrologic interaction of ground water and surface water (McAda, D.P., 1996, Plan of study to quantify the hydrologic relation between the <span class="hlt">Rio</span> <span class="hlt">Grande</span> and the Santa Fe Group aquifer system near Albuquerque, central New Mexico: U.S. Geological Survey Water-Resources Investigations Report 96-4006, 58 p.). A multiyear research effort followed, funded and conducted by the U.S. Geological Survey and other agencies (Bartolino, J.R., and Cole, J.C., 2002, Ground-water resources of the Middle <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin, New Mexico: U.S. Geological Survey Circular 1222, 132 p.). The modeling work described in this report incorporates the results of much of this work and is the culmination of this multiyear study. The purpose of the model is (1) to integrate the components of the ground-water-flow system, including the hydrologic interaction between the surface-water systems in the basin, to better understand the geohydrology of the basin and (2) to provide a tool to help water managers plan for and administer the use of basin water resources. The aquifer system is represented by nine model layers extending from the water table to the pre-Santa Fe Group basement rocks, as much as 9,000 feet</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://eric.ed.gov/?q=rousseau&pg=7&id=EJ821938','ERIC'); return false;" href="https://eric.ed.gov/?q=rousseau&pg=7&id=EJ821938"><span>Towards a Pedagogy of a New Social Contract: Lessons from the Participatory Budget in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Brazil)</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Streck, Danilo Romeu</p> <p>2004-01-01</p> <p>The paper analyses the pedagogical dimension of the process of Participatory Budgeting in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Brazil), taking into consideration the local and regional culture as well as the wider political milieu. The question this paper engages with is whether, in this social movement involving around 400,000 people in 2001, there…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED476603.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED476603.pdf"><span>Towards a Pedagogy of a New Social Contract: Lessons from Participatory Budgeting in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Brazil).</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Streck, Danilo R.</p> <p></p> <p>This paper analyzes the pedagogical dimension within the process of participatory budgeting in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil, taking into consideration the local and regional culture, as well as the political milieu. The question is whether, in this social movement which involved around 400,000 people in 2001, signs can be identified that…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=316233','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=316233"><span>Impact of the biological control agent, Tetramesa romana (Hymenoptera: Eurytomidae) on Arundo donax (Poaceae: Arundinoideae) along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> River in Texas</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Five years post release of 1.2 million arundo wasps, Tetramesa romana, into the riparian habitats of the lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> River; changes in the health the invasive weed, Arundo donax, giant reed have been documented. These changes in plant attributes are fairly consistent along the 558 river miles b...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=257571','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=257571"><span>Spatial information technologies for climate change impact on ecosystems: detecting and mapping invasive weeds in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> River system of south Texas</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Wetlands and aquatic ecosystems are vulnerable to climate change. Exotic invasive weeds are a serious problem in the <span class="hlt">Rio</span> <span class="hlt">Grande</span> River system of Texas. The river extends 3,040 km from its source in the San Juan Mountains of Colorado to the mouth at the Gulf of Mexico on the United States-Mexico borde...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED147055.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED147055.pdf"><span>Colonias in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of South Texas: A Summary Report. Lyndon B. Johnson School of Public Affairs, Policy Research Report, Number 18.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Haynes, Kingsley E.; And Others</p> <p></p> <p>The Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of South Texas consists of three counties: Cameron, Hidalgo, and Willacy. Poverty pervades in the Valley, especially in the colonias ("a poor, rural unincorporated community with 20 or more dwelling units, where home ownership is the rule"). Colonia residents are almost exclusively Mexican Americans.…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6282153','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6282153"><span>Change in fish fauna as indication of aquatic ecosystem condition in <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Morelia-Lago de Cuitzeo Basin, Mexico</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Soto-Galera, E.; Paulo-Maya, J.; Lopez-Lopez, E.; Serna-Hernandez, J.A. . Escuela Nacional de Ciencias Biologicas); Lyons, J. )</p> <p>1999-07-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Morelia-Lago de Cuitzeo basin in west central Mexico has experienced major increases in water pollution from a rapidly growing human population. The authors examined changes in the long-term distribution of fishes in relation to water quality and quantity in order to assess the condition and health of aquatic ecosystems in the basin. Sampling between 1985 and 1993 revealed that five (26%) of the 19 native fish species known from the basin had been extirpated. Two of these were endemics, Chirostoma charari and C. compressum, and they are presumed extinct. Twelve (63%) of the remaining species had declines in distribution. Sixteen (80%) of the 20 localities sampled had lost species. The greatest declines occurred in Lago de Cuitzeo proper and in the lower portion of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Morelia watershed. Species losses from the lake were attributable to drying and hypereutrophication of the lake because of substantial reductions in the amount and quality of tributary inputs, whereas losses from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Morelia watershed were the result of pollution from agricultural, municipal, and industrial sources, especially in the region around the city of Morelia. Three localities in the upper portion of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> de Morelia watershed--Cointzio reservoir, La Mintzita spring, and Insurgente Morelos stream--contained most of the remaining fish species diversity in the basin and deserve additional protection. Fish faunal changes indicated major declines in the health of aquatic ecosystems in the Morelia-Cuitzeo basin.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27849254','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27849254"><span>First record of the Lesser Snouted Treefrog Scinax nasicus (Cope, 1862) in Brazilian coast and new species records for the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Dalmolin, D A; Rosa, F O; Freire, M D; Fonte, L F M; Machado, I F; Paula, C N; Loebmann, D; Périco, E</p> <p>2017-01-01</p> <p>Herein, we provide new occurrence records of Scinax nasicus (Cope, 1862) for the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Southern Brazil. All new records here provide are located on Southern half of the state. Besides this, we provide the first record for species in Brazilian coastal zone. Those records improve considerably our knowledge regarding species distribution in Southern Brazil.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=245113','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=245113"><span>Seasonality and movement of adventive populations of the arundo wasp (Hymenoptera: Eurytomidae), a biological control agent of giant reed in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin in south Texas</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>The arundo wasp, Tetramesa romana, has been permitted as a biological control agent for the invasive perennial grass, Arundo donax. Evidence of adventive populations of the arundo wasp in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Basin was confirmed with a spatio-temporal survey spanning more than 350 river miles. A ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Rousseau&pg=7&id=EJ821938','ERIC'); return false;" href="http://eric.ed.gov/?q=Rousseau&pg=7&id=EJ821938"><span>Towards a Pedagogy of a New Social Contract: Lessons from the Participatory Budget in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Brazil)</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Streck, Danilo Romeu</p> <p>2004-01-01</p> <p>The paper analyses the pedagogical dimension of the process of Participatory Budgeting in the State of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul (Brazil), taking into consideration the local and regional culture as well as the wider political milieu. The question this paper engages with is whether, in this social movement involving around 400,000 people in 2001, there…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1998/0066/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1998/0066/report.pdf"><span>Water-quality data for the <span class="hlt">Rio</span> <span class="hlt">Grande</span> between Picacho Bridge near Las Cruces and Calle del Norte Bridge near Mesilla, New Mexico, 1996-97</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Huff, G.F.</p> <p>1998-01-01</p> <p>The City of Las Cruces is concerned about water quality in a reach of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> that receives outfall from the City of Las Cruces wastewater-treatment plant. Water-quality samples were collected from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at Picacho Bridge near Las Cruces, New Mexico; from the sampling site at the City of Las Cruces wastewater-treatment plant; and from the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at Calle del Norte Bridge near Mesilla, New Mexico. The samples were collected on 12 days from August 6, 1996, to February 28, 1997, and were analyzed for a suite of dissolved and total constituents including trace metals. Instantaneous stream discharge was measured concurrently with collection of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> samples. At the wastewater- treatment plant, the City of Las Cruces provided instantaneous discharge rates concurrent with sampling. Quality-control measures used in this study to ensure analytical accuracy included replicate sampling, replicate analysis of split samples, ambient blanks, equipment blanks, and analysis of standard reference water samples.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=287946','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=287946"><span>Novel techniques developed to control cattle fever ticks feeding on free-ranging white-tailed deer along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in South Texas</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Cattle fever ticks were eradicated from the southern and southeastern U.S. and California in a campaign that lasted from 1907 through 1943, however, re-introductions across the <span class="hlt">Rio</span> <span class="hlt">Grande</span> from Mexico and into South Texas have resulted in extensive efforts to maintain eradication from other parts of ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/753068','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/753068"><span>Comparison of organochlorine chemical body burdens of female breast cancer cases with cancer free women in <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil--Pilot Study</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Erdmann, C.A.; Petreas, M.X.; Caleffi, M.; Barbosa, F.S.; Goth-Goldstein, R.</p> <p>1999-12-01</p> <p>This pilot study collected preliminary data to examine known and suspected breast cancer risk factors among women living in rural and urban areas in the state of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul, Brazil by questionnaire. In addition, the body burden levels of a panel of organochlorines was measured in a small clinic-based prospective sample.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=250178','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=250178"><span>Application of scintillometry to estimate water use by giant reed (Arndo Donax L.)- A perennial invasive weed along the <span class="hlt">Rio</span> <span class="hlt">Grande</span> River near Laredo, Texas</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Giant reed (Arundo donax L.) is a bamboo-like perennial invasive weed from Eurasia presenting a severe threat to agroecosystems and riparian areas in Texas and Mexican portions of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> River Basin. It is spreading rapidly by displacing native vegetation. Giant reeds are expected to consume...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/14592573','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/14592573"><span>Assessment of arsenic and heavy metal concentrations in water and sediments of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> at El Paso-Juarez metroplex region.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Rios-Arana, J V; Walsh, E J; Gardea-Torresdey, J L</p> <p>2004-01-01</p> <p>The <span class="hlt">Rio</span> <span class="hlt">Grande</span> located along the US-Mexico border is affected by anthropogenic activities along its geographical course. Runoff and wind deposition of smelting residues may contribute to the pollution of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> in the El Paso-Ciudad Juarez area. Few studies have addressed the presence or impacts of heavy metals or arsenic in this ecosystem. This study reports a survey of heavy metals (Cr, Cu, Cd, Ni, Pb, and Zn) and arsenic (As) in water and sediments of the <span class="hlt">Rio</span> <span class="hlt">Grande</span> collected from seven sites in the El Paso-Juarez region. Since water quality influences metal content in water, physical (temperature, flow and conductivity), and chemical (pH, dissolved oxygen, nitrates, alkalinity, and water hardness) parameters were measured at each site. Arsenic and heavy metal levels were determined using Inductively Couple Plasma (ICP) emission spectroscopy following EPA procedures. Zinc and lead were found as both total and dissolved metals in most of the samples, with concentrations of total recoverable metals reaching up to 105 and 70 microg/l, respectively. Most metals were found in sediment samples collected from four of seven sites. The highest Cu concentration (35 mg/l) was found at the American Dam site. Concentrations of metals found through this survey will be used as a reference for future studies in monitoring arsenic, heavy metals, and their impacts in the <span class="hlt">Rio</span> <span class="hlt">Grande</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/41569','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/41569"><span>Decline of red-eared sliders (Trachemys scripta elegans) and Texas spiny softshells (Apalone spinifera emoryi) in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of Texas</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Donald J. Brown; Amanda D. Schultz; James R. Dixon; Brian E. Dickerson; Michael R. J. Forstner</p> <p>2012-01-01</p> <p>In 2009, we repeated a freshwater turtle survey first conducted in 1976 in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (LRGV) of Texas to determine whether the abundance of freshwater turtles in the LRGV has changed over the past three decades. We captured significantly fewer red-eared sliders (Trachemys scripta elegans) and Texas spiny softshells (Apalone spinifera emoryi) in 2...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/43773','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/43773"><span>Road density not a major driver of Red-eared slider (Trachemys scripta elegans) population demographics in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley of Texas</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Ivana Mali; Brian E. Dickerson; Donald J. Brown; James R. Dixon; Michael R. J. Forstner</p> <p>2013-01-01</p> <p>In recent years there have been concerns over the conservation and management of freshwater turtle populations in the state of Texas. In 2008 and 2009, we completed several investigations addressing anthropogenic impacts on freshwater turtles in the Lower <span class="hlt">Rio</span> <span class="hlt">Grande</span> Valley (LRGV) of Texas. Here, we use a model selection approach within an information-theoretic...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=268486','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=268486"><span>Epidemiological and biological aspects on Ornithodoros brasiliensis (mouro tick), an argasidae tick only found on the highlands region of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state, southern Brazil</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>The soft tick Ornithodoros brasiliensis (Acari: Argasidae) is present in farms along the highlands of <span class="hlt">Rio</span> <span class="hlt">Grande</span> do Sul state in southern Brazil. Reports of human parasitism by O. brasiliensis drew the attention of local health authorities. A preliminary epidemiological survey was conducted to ident...</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_25 --> <center> <div class="footer-extlink text-muted"><small>Some links on this page may take you to non-federal websites. 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