the abundance of the primary host, Carex gravida, and rust severity on alternate host E. strigosus in two years with abundance of Carex. Severity of leaf rust was positively correlated with the abundance of Carex gravida. There was some evidence for correlation between the abundance of the primary host, Carex ...

... curriculum. Additionally, there is an abundance of research spelling out what the curricula should include. Properly educated ...

multinational pilot study of JGOFS, studying the spring phytoplankton ... and bacteria. In addition, thymidine incorporation and leucine ...

In addition, thymidine incorporation and leucine incorporation were measured to estimate bacterial production. The following principal investigators were ...

(Green et al., 1989). In addition to absorbing strongly in this spectral range, the abundance of water vapor in the terrestrial atmosphere varies ...

The presence of an excess of short-lived radionuclides in the early protoplanetary disk has been inferred from studying how the distribution of the abundances, in materials like Ca-Al-rich inclusions, differ from the solar abundance distribution (SAD). The likely source of these radioactivites is a supernova that ejected material into the early solar ...

The semiempirical abundance table of Suess and Urey has been very helpful to nuclear physicists in determining the relative importance of various mechanisms of nucleogenesis in contributing to the natural abundances of the elements. The table was based primarily on abundance determinations in chondritic meteorites, together ...

The hypothesis that structural habitat cues are the proximate factor determining territory size was tested by examining the relationships among habitat structure, prey abundance, and intrapopulation variation in territory size in Ovenbirds (Seiurus aurocapillus). Territory size was negatively correlated with prey abundance, with territory size decreasing ...

A generalized additive model was developed that described the effects of walleye Sander vitreus fingerling stocking density on the abundance of walleyes in 551 lakes in Minnesota. Walleye abundance was measured as a catch per effort from 1,511 standard Mi...

We compare the oxidation sequence of volatile carbon in several comets. The relative abundances of cometary CO, H2CO, and CH3OH provides one measure of the efficiency of H-atom addition reactions on surfaces of pre-cometary interstellar grains.

We present an abundance analysis of a sample of 33 hydrogen-rich (DA) white dwarfs. We have used archival high-resolution spectra to measure abundances of calcium, magnesium and iron in a set of 30 objects. In addition, we present preliminary calcium abundances in three new white dwarfs based on low-dispersion ...

Many ecosystems worldwide are dominated by introduced plant species, leading to loss of biodiversity and ecosystem function. A common but rarely tested assumption is that these plants are more abundant in introduced vs. native communities, because ecological or evolutionary-based shifts in populations underlie invasion success. Here, data for 26 herbaceous species at 39 sites, ...

Many ecosystems worldwide are dominated by introduced plant species, leading to loss of biodiversity and ecosystem function. A common but rarely tested assumption is that these plants are more abundant in introduced vs. native communities, because ecological or evolutionary-based shifts in populations underlie invasion success. Here, data for 26 herbaceous species at 39 sites, ...

If additivity is known or assumed, the toxicity of a chemical mixture may be predicted from the dose response curves of the individual chemicals comprising the mixture. As single chemical data are abundant and mixture data sparse, mixture risk methods that utilize single chemical...

BackgroundWe studied the meiofauna community at deep-sea hydrothermal vents along a gradient of vent fluid emissions in the axial summit trought (AST) of the East Pacific Rise 9�50?N region. The gradient ranged from extreme high temperatures, high sulfide concentrations, and low pH at sulfide chimneys to ambient deep-sea water conditions on bare basalt. ...

Changes the abundance and distribution of zooplankton due to changes in sea ice would have direct effects on bowhead whales. In addition, loss of Arctic sea ...

Feb 25, 2008 ... In addition to these ice fields, Iceland is home to over 200 volcanoes, many of which are still active. Hot springs are also abundant, ...

A total of 29 individual studies are presented in their entirety. An additional 25 references are cited. (R.J.S.)

... be locally abundant. Additional specimens examined: Colombia. AMAZONAS: Rio Amazonas, vicinity of Leticia, 29 Aug�12 Sep 1966, ... ...

... exit the caves for the duration of the intrusion. To reduce unintentional ... addition, low rock walls were constructed to help discourage visitors or ... ...

... abundance of species such as Eleocharis palustris and Juncus articulatus in addition to the species mentioned above. enlarge ... ...

Methane is the most abundant simple organic molecule in the outer solar system bodies. In addition to being a gaseous constituent of the atmospheres of the Jovian planets and Titan, it is present in the solid form as a constituent of icy surfaces such as ...

Methane is the most abundant simple organic molecule in the outer solar system bodies. In addition to being a gaseous constituent of the atmospheres of the Jovian planets and Titan, it is present in the solid form as a constituent of icy surfaces such as ...

). Additionally, Cyma- dusa was markedly abundant on the foliose green alga Ulva in late summer, but not so

... species loss over time. Additional index words: Ecologically invasive, ... absence of long-term monitoring data on the distribution and abundance of ... ...

Sep 1, 2011 ... Vector-borne disease transmission is often related to species diversity (Keesing et al., 2006). In addition, flea abundance and host spectrum ...

Aug 31, 2001 ... In addition to mapping thorium and other elements, a number of other ... highlands thought to be relatively high in aluminum abundance. ...

Changes the abundance and distribution of zooplankton due to changes in sea ice would have direct effects on bowhead whales. In addition, loss of Arctic sea ...

Nov 16, 2010 ... Nutrient addition stimulates the reproductive activity of aquatic ... and abundance of aquatic hyphomycete conidia in transport. ...

Jun 16, 2011 � ... of labile carbon would elevate microbial abundance and activity, ... It has not been subjected to OCR (Optical Character Recognition) ...

... in light of the very high rate big Be9 V ... new work by Merk and Prialnik (2006) argues for abundant ... in this workL In addition, some quantity of S bear- ...

and bacteria. In addition, thymidine incorporation and leucine incorporation were measured to ... The data is public domain and can be retrieved on-line at ...

In addition to the isotope mass spectrometers, this laboratory includes a GC-MS for gas abundance measurements and a vacuum line for doing off-line preparation of samples for...

... CSAForkner, R. E. and M. D. Hunter. What goes up must come down? Nutrient addition and predation pressure on oak herbivores. ... ...

... additional riverine species, such as the Pallid Sturgeon (Scaphirhynchus albus) and Alligator Snapping Turtle (Macroclemys temminckii). The impacts ... ...

... pure beta emitter, with only a 121 keV gamma particle with an abundance of 0.00285 ... The c is the need to add additional isotope at BOL so that the ...

Thorium and uranium abundances have been measured in the Jilin H5 chondrite by radiochemical neutron activation analysis. Although the abundances of (35.8 + or - 1.5) ppb Th and (14.9 + or - 0.9) ppb U are within the range of literature values, the ratio Th/U is about 25 percent lower than the average value for H chondrites. Terrestrial ...

A vital ingredient of DNA molecule named adenine may be produced by successive addition of HCN during molecular cloud collapse and star formation. The authors compute its abundance in a collapsing cloud as a function of the reaction rate and show that in much of the circumstances, the resulting amount may be sufficient to contaminate planets, comets and ...

ALH84001 is a cumulate orthopyroxenite of Martian origin which shows abundant evidence for fluid activities. Trace element abundances in the bulk rock, apatite, and carbonates strongly support that view. Textural relationships and magnetite morphologies additionally suggest that beside carbonates, glass, and phosphates also chromite ...

High-resolution Reticon spectra of red and near-infrared C I, N I, and O I lines have been analyzed to determine C, N, and O abundances in a sample of 20 F and G main-sequence stars. Their iron abundances, which have been determined from analysis of additional Reticon spectra of red Fe I lines, cover the range -0.9< or =(Fe/H)< ...

Current observational data on the abundances of deuterium, helium-3, helium-4 and lithium-7 are reviewed and these data are used to infer (or to bound) the primordial abundances of these elements. The physics of primordial nucleosynthesis in the context of the standard'' (isotropic, homogeneous,...) hot big bang model is outlined and ...

Two additional hyperfine components of the interstellar radical C3H were detected. In addition, methanol was discovered in interstellar clouds. The abundance of HCCN and various chemical isomers in molecular clouds was investigated.

. In the spring, nutrient addition increased plant growth and carnivore abundance, indicating a bottom-up control for water addition experiment for A plant biomass, B herbivorous arthropod abundance, and C carnivorous increasing plants and all herbivores while nutrient (N) effects were non-significant. Top-down ...

As a galaxy evolves, its stars change the amounts (abundances) of elements within it. Thus determining the abundances of these elements in different locations within a galaxy traces its evolution. This dissertation presents abundances of planetary nebulae in our Galaxy and of H II regions in a nearby galaxy (M51). Observations at ...

Models that lead to a cosmological stiff fluid component, with a density ?S that scales as a-6, where a is the scale factor, have been proposed recently in a variety of contexts. We calculate numerically the effect of such a stiff fluid on the primordial element abundances. Because the stiff fluid energy density decreases with the scale factor more rapidly than radiation, it ...

BackgroundMicroRNA (miR) are a class of small RNAs that regulate gene expression by inhibiting translation of protein encoding transcripts. To evaluate the role of miR in skeletal muscle of swine, global microRNA abundance was measured at specific developmental stages including proliferating satellite cells, three stages of fetal growth, day-old neonate, and the ...

In Escherichia coli, high-abundance chemoreceptors are present in cellular amounts approximately 10-fold higher than those of low-abundance receptors. These two classes exhibit inherent differences in functional activity. As sole cellular chemoreceptors, high-abundance receptors are effective in methyl-accepting activity, in ...

Accumulations of dead skeletal material are a valuable archive of past ecological conditions. However, such assemblages are not equivalent to living communities because they mix the remains of multiple generations and are altered by post-mortem processes. The abundance of a species in a death assemblage can be quantitatively modelled by successively integrating the product of ...

The relative abundances of elements in the charge ranges of Z = 75-79 (platinum) and Z = 80-83 (lead) should be a sensitive indication of the contributions of the r- and s-processes in nucleosynthesis. Data from the HEAO 3 Heavy Nuclei Experiment are used to establish abundances, relative to iron, of these elements in the cosmic radiation, as well as the ...

We present abundances of Ti, Fe, and Ni as well as 10 post-iron-peak elements in the extrinsic, Galactic S star HD 35155. This star is of interest because it shows many characteristics of symbiotic stars and displays the same pattern of abundance enhancements observed in yellow symbiotic stars. It is clear that HD 35155 is associated with the symbiotic ...

Loss or addition of nucleotides at junctions generated by V(D)J recombination significantly expands the antigen-receptor repertoire. Addition of nontemplated (N) nucleotides is carried out by terminal deoxynucleotidyl transferase (TdT), whose only known physiological role is to create diversity at V(D)J junctions during lymphocyte development. Although ...

Solar models using the new lower abundances of Asplund et al. or Caffau et al. do not agree as well with helioseismic inferences as models that use the higher Grevesse & Noels or Grevesse & Sauval abundances. Adopting the new abundances leads to models with sound-speed discrepancies of up to 1.4% below the base of the ...

The effect of glucose addition (0 and 500�?g�C�g(-1) soil) and nitrate (NO(3)) addition (0, 10, 50 and 500�?g NO(3)-N�g(-1) soil) on nitric oxide reductase (cnorB) gene abundance and mRNA levels, and cumulative denitrification were quantified over 48�h in anoxic soils inoculated with Pseudomonas mandelii. ...

Blood samples were analyzed from 30 domestic cats (Felis domesticus) from the Pet�n region of Guatemala to determine the seroprevalence of common pathogens that may pose a potential risk to native wild felids. Eight of the cats had been vaccinated previously; however, owners were unable to fully describe the type of vaccine and date of administration. In ...

A new NI (n+ charge islands) high voltage device structure based on E-SIMOX (epitaxy-the separation by implantation of oxygen) substrate is proposed. It is characterized by equidistant high concentration n+-regions on the top interface of the dielectric buried layer. Inversion holes caused by the vertical electric field (EV) are located in the spacing of two neighboring ...

1. Using a subtidal marine food web as a model system, we examined how food chain length (predators present or absent) and the prevalence of omnivory influenced temporal stability (and its components) of herbivores and plants. We held the density of top predators constant but manipulated their identity to generate a gradient in omnivory prevalence. 2. We measured temporal stability as the inverse ...

This report presents the results of transect studies conducted from 1981--1986 to determine the distribution and abundance of desert tortoises (Gopherus agassizii) on the Nevada Test Site (NTS) and summarizes the current understanding of the distribution of this species on NTS. Seven hundred fifty-nine transect having a total length of 1,190.7 km were walked and 380 sign of ...

Some atmosphere parameters (Teff, lgg, [Fe/H], Vt) and the abundances of 21 elements for 19 giants of the disk are determined. The gravity is determined through three methods, namely, by condition of ionization balance for atoms of iron, with the use of parallaxes (and masses) and the adjustment of wings of the Ca I ? 616.217 nm line. The abundances of the ...

QUE 99177 and MET 00426 are the first known CR3 chondrites and have largely escaped the aqueous alteration experienced by most of the CR chondrite group. In addition to high presolar silicate and oxide grain abundances, these meteorites also contain high abundances of phases with anomalous C isotopic compositions. Presolar SiC ...

Calculations of the thermonuclear synthesis of light elements in a big-bang model universe are reported. A new method is described for solving the equations of nuclear reaction kinetics; it affords quite high accuracy and saves considerable machine time. The results of R. V. Wagoner's calculations are confirmed. It is further shown that large-amplitude temperature and entropy fluctuations ...

More than 300 pairs of fine and coarse mesh plankton net samples were collected in the northern basin of Lake Chad during an 18-month period, June 1967 to November 1968. The seasonal distribution and abundance of the dominant species of Rotifera and Crustacea are given in addition to a general description of the hydrology and circulation of the northern ...

Reliable prediction of the effects of landscape change on species abundance is critical to land managers who must make frequent, rapid decisions with long-term consequences. However, due to inherent temporal and spatial variability in ecological systems, previous attempts to predict species abundance in novel locations and/or time frames have been largely ...

We report the results of abundance analyses of new samples of stars with planets and stars without detected planets. We employ these data to compare abundance-condensation temperature trends in both samples. We find that stars with planets have more negative trends. In addition, the more metal-rich stars with planets display the most ...

This paper sumarizes research on abundances in RR Lyrae stars that one of us (GW) has been engaged in with various astronomers. In addition we report on the preliminary analysis of the abundances of C, Si, S and Fe in 24 RR Lyrae stars. Our model atmosphere analysis, including NLTE effects, are based on spectra of resolving power ...

A search for a white dwarf companions of cool stars with peculiar element abundances was undertaken. One additional star the xi Cet, was found with a white dwarf companion. It was found that HR 1016, 56Uma, 16 Ser, have high excitation emission lines whic...

in high molecular weight lipids, particularly intact acyl lipids, such as triacyl- glycerols, wax esters. In this paper, total lipid extracts and insoluble organic matter from soils of three adjacent plots-alkanols and n-alkanes, with the former being the more abundant [Fig. 2(a)]. In addition, abundant wax esters

. ......... 9 Figure 4: Additional silt and clay obtained from samples by washing............................................................. 13 Figure 6: Within core variability showing relative abundance of silt and clay for each bin. ....... 14 Figure 7: Ternary plot showing relative abundances of sand, silt, and clay for each site

Week 3 Report) through an area of dense jellyfish and collect additional samples of Chrysaora fuscescens (sea nettles) for future analysis and examination of gut contents. The jellyfish were as abundant-looking transducers, linked with net trawls that will be useful for acoustic identification of jellyfish during future

Information overload has become a critical challenge withiin military Command and Control. However, the problem is not so much one of too much information but of abundant information that is poorly organized and poorly represented. In addition, the capabi...

... studies. This problem also affects studies of natural abundances of stable isotopes when the diets of organisms are subject to seasonal changes in isotopic composition or to changes caused by experimental ...

Title and Subtitle. 2. Government Accession No. 1 NASA TR R-348 .... necessary for a study of this kind. In addition, the personal skills of the ..... abundant evidence of the important role that gases play during their development. ...

One of the greatest single factors responsible for the rapid growth of natural abundance 13C NMR spectroscopy is the deployment of selective and random noise proton 'decoupling'. However, proton decoupling is normally accompanied by an additional signal e...

The regional, vertical, and seasonal abundance of the dominant zooplankton species were studied in conjunction with a series of nutrient additions to Great Central Lake. Two rotifer species, Kellicottia spp., Conochilus unicornis, three cladocera species,...

In addition we also observed the shorter cumulene carbene H2C4 at the same position. The fractional abundance of H2C6 relative to H2 is about 4.7 x 10(-11) ...

The Southeastern region of the United States, with its temperate and subtropical climates and abundance of surface waters, has the largest number of nonindigenous aquatic species having been introduced into its often hospitable waters. In addition, over a...

in Table 1. Detection of trends in abundance We explore how density dependence affects our ability additionally explored how detection of significant trends related to the magnitude of the trends concernedSpecial section Influence of density dependence on the detection of trends in unobserved life

... habitat in addition to a reduction in broad-spectrum insecticide use. Received: May 27, 2004; Accepted: December ... will likely limit the use of many broad-spectrum insecticides. Organophosphate and carb...

Information on the Marine Biology program at SUNY Stony Brook. Includes information on the faculty, courses, and explorations, which features information on an abundance of marine science topics and habitats. Site links to Marine Biology Web, an educational resource complete with news, information, and additional links.

The brown seaweed or kelp, Laminaria groenlandica, which is abundant in the nearshore subtidal waters of southeastern and central Alaska, may have great potential for aquaculture. Additionally, portable substrates with 'standarized' growth of young Lamina...

... This information will be used to select future release sites. Additionally, plant size, cover and number of fruits ... included the date of release, geographic coordinates of release sites, number of beet...

... 2007). The visible effects of damage include white, yellow, purple, and red longitudinal streaking of leaves in addition to leaf rolling (Walters et al. 1980, Riedell 1989). Through ... ...

... nutrient content of a plant's leaves, the abundance of structural and chemical defenses in the leaves, and the adaptations of insects to plant defenses. Damage frequency additionally depends heavily on the...

... In addition, concentrations of the doped rare earth atoms were controlled by XRF (X- Ray Fluorescence) method. The abundance of other than Gd ...

Electrochemical power sources that utilize zinc electrodes possess many advantages. Zinc is abundantly available, benign, inexpensive, stable over a wide operating temperature range, and has a high oxidation potential. In spite of these advantageous chara...

Background and Aims: Ammonia volatilization is the primary route for nitrogen loss from cattle feedlots. An additional, but poorly studied mechanism in feedlots is aerobic nitrification. The aim of this study is to characterize nitrifier activity, abundance, and diversity for a cattle production ...

While there is an abundance of catalysts that are useful in promoting the addition of the Si-H bond across alkenes and alkynes, relatively few agents efficiently catalyze the hydrosilylation of acrylonitrile. In particular, catalysts that lead to exclusiv...

Natural gas is abundant, clean burning, and cost competitive with other fuels. In addition to superior economic fundamentals, the expanded use of natural gas will be enhanced by political and industry leaders. Natural gas therefore will continue to be the boiler fuel choice for Texas electric generating companies.

... for some currently unknown factor such as leaf chemical abundance or composition (Chapman 1988). Additional observations are necessary before that hypothesis can be tested. Acknowledgments We thank Merril...

Biological effects data with single chemicals are far more abundant than with mixtures. Yet, environmental exposures to chemical mixtures, for example near hazardous waste sites or nonpoint sources, are very common and using test data from single chemical...

Additionally, without microscopic symbiotic algae living in healthy coral tissue , ... (4) How do algal diversity and abundance change over time? ... Theme_Keyword: COML > CENSUS OF MARINE LIFE; Theme_Keyword: Coral Reef Ecosystems ...

Biological effects data with single chemicals are far more abundant than with mixtures. et, environmental exposures to chemical mixtures, for example near hazardous waste sites or nonpoint sources, are very common and using test data from single chemicals to approximate effects o...

I assessed the long-term effects of an experimental addition of sand sediment and subsequent restoration efforts on brook trout Salvelinus fontinalis habitat and abundance in Hunt Creek, in Michigan's northern Lower Peninsula. Alexander and Hansen (1988) ...

Normal blood values are reported for 41-male and 52-female chinchillas of the Laniger strain whose ages ranged from 1-8 years. In addition, femoral bone marrow was characterized. Cells per unit volume of marrow, and relative abundance of different cell ty...

This chain of barrier islands off the coast of Texas supports an abundance of wildlife, and is composed of a variety of environments, such as dunes, grasslands, and tidal flats. This National Park Service (NPS) site offers a brief profile of islands, as well as photos, maps, and links to visitor information and additional resources.

This National Park Service (NPS) website discusses features of this barrier island in New York, including the seashore features of a sunken forest, abundant marine and wildlife, as well as interesting history. It offers links to park maps, visitor information, and additional resources.

The Tampa Bay Water Authority (TBW) has been permitted to withdraw additional surface waters from the Hillsborough, Palm, and Alafia Rivers during periods ... ...

Indices to the abundances of fish and wildlife of two eastern North Carolina wooded swamp stream environments were developed during 1972, 1973, and 1974, as a preconstruction study of the effects of stream channelization on fish and wildlife. In addition,...

Load management has been proposed as a means whereby an electric utility can reduce its requirements for additional generation, transmission, and distribution investments, shift fuel dependency from limited to more abundant energy resources, and improve t...

of methodological advances in molecular phylogenetic and paleobiological research has resulted in powerful of nodes (derived, e.g., from fossils), conferring additional realism to age estimates. The paleontological under a known probability are based on the frequency and abundance of fossil finds through the lineage

A comprehensive resource on the commercial and recreational blue crab fishery in the Maryland and Virginia waters of the Chesapeake Bay. Explore regulation information for both states, as well as the different gear and methods for catching blue crabs. Though most information pertains to MD and VA, there is an abundance of links to additional information ...

A comprehensive resource on the commercial and recreational blue crab fishery in the Maryland and Virginia waters of the Chesapeake Bay. Explore regulation information for both states, as well as the different gear and methods for catching blue crabs. Though most information pertains to MD and VA, there is an abundance of links to additional information ...

Story of the invasion of jellyfish into the Black Sea and the resulting affects on the native fish population. An excellent introduction into introduced species and their effects on an ecosystem. Site features an abundance of information on alien species and the delicacy that goes into eradicating them. Also links to additional non-traditional ...

factors that contribute to the abundance of Microcystis genotypes and microcystin production. In addition, in a laboratory-based study we examined the effect of nutrients on transcriptional activity of the microcystin is the dominant microcystin producer in the lake, other microcystin-producing cyanobacteria were also found

While conducting juvenile Atlantic and Gulf menhaden (Brevoortia tyrannus and B. patronus) abundance surveys and tagging studies in estuaries from Brownsville, Texas to Barnstable Harbor, Mass. in 1971, anomalous menhaden and other species were collected....

The Continuous Plankton Recorder has been deployed on a seasonal basis in the north Pacific since 2000, accumulating a database of abundance measurements for over 290 planktonic taxa in about 3,500 processed samples. There is an additional archive of over...

King county has over ten years of data on the distribution and abundance of amphibians in wetlands. Changes in wetland amphibian composition are being analyzed in relationship to physical changes within wetlands and surrounding land-use development and change. In addition to tes...

organic nutrients is low, than slow growing perennials (Pedersen and Borum, 1996). Additionally treatments. There was no effect of nutrient addition on the level of grazing activity and no interaction between nutrient addition and grazer removal. 3.1.2. Nutrient enrichment At the point of emersion, when

Radial velocities have been determined for 53 K giants in Baade's window, which belong to the nuclear bulge population and have abundances derived from low resolution spectra. Additional radial velocities for an overlapping sample of 71 bulge K giants show the same dependence of velocity dispersion on abundance; in both samples, the ...

The primordial abundances of Be-9 and B-11 are the most sensitive indicators of the importance of inhomogeneity in the early universe which have not yet been measured. Additionally, their abundances in the oldest stars are a sensitive measure of the star formation and cosmic-ray spallation history of the early Milky Way. Here, the ...

We have calculated electron impact excitation cross sections between most of the low metastable levels of Fe III and Fe VI, using the close-coupling method. In addition, we have recalculated the electric quadrupole and magnetic dipole transition probabilities for these transitions in Fe VI. The statistical-equilibrium equations appropriate to a collisional/radiative model are ...

The effects of an enhanced helium abundance on the visible spectra of luminous F and G stars are small and liable to escape detection. These results have important implications for recent work on the possible helium enrichment in the envelopes of Cepheid variables. In addition we confirm the results of similar studies of early-type stars on the apparent ...

A library of neutral, hydrophobic reagents was synthesized for use as derivatizing agents in order to increase the ion abundance of N-linked glycans in electrospray ionization mass spectrometry (ESI MS). The glycans are derivatized via hydrazone formation and are shown to increase the ion abundance of a glycan standard more than 4-fold. ...

Species conservation and their management depend on the availability of their population behavior and changes in time. This way, population studies include aspects such as species abundance and activity pattern, among others, with the advantage that nowadays new technologies can be applied, in addition to common methods. In this study, we used camera-traps ...

The pre-Galactic abundance of lithium offers a unique window into nonthermal cosmological processes. The primordial Li abundance is guaranteed to be present and probes big bang nucleosynthesis (BBN), while an additional Li component is likely to have been produced by cosmic rays accelerated in large-scale structure formation. ...

Using only spatially and temporally replicated point counts, Royle (2004b, Biometrics 60, 108-115) developed an N-mixture model to estimate the abundance of an animal population when individual animal detection probability is unknown. One assumption inherent in this model is that the animal populations at each sampled location are closed with respect to migration, births, and ...

We report the measurement of chemical abundances in 35 low-mass main sequence stars. We measured the abundances of 12 elements in Kapteyn's Star, an M dwarf which is probably the closest halo star to the Sun. We measured [Fe/H] = -0.98, which is about 0.5 dex smaller than that measured in the one previously published abundance ...

We examined Cerulean Warbler (Dendroica cerulea) abundance and occurrence in southwestern West Virginia, where the coal-mining technique of mountaintop removal mining-valley fill converts large contiguous tracts of deciduous forest to forest patches surrounded by early successional habitats. Our study objectives were to quantify abundance and occurrence of ...

Local species abundance is related to range size, habitat characteristics, distribution type, body size, and life-history variables. In general, habitat generalists and polyphagous species are more abundant in broad geographical areas. Underlying this, local abundance may be explained from the interactions between life-history traits, ...

Metagenomics is the study of microbial communities sampled directly from their natural environment, without prior culturing. Among the computational tools recently developed for metagenomic sequence analysis, binning tools attempt to classify the sequences in a metagenomic dataset into different bins (i.e., species), based on various DNA composition patterns (e.g., the tetramer frequencies) of ...

AbstractMetagenomics is the study of microbial communities sampled directly from their natural environment, without prior culturing. Among the computational tools recently developed for metagenomic sequence analysis, binning tools attempt to classify the sequences in a metagenomic dataset into different bins (i.e., species), based on various DNA composition patterns (e.g., the tetramer ...

We investigate transport in a gate-defined graphene quantum point contact in the quantum Hall regime. Edge states confined to the interface of p and n regions in the graphene sheet are controllably brought together from opposite sides of the sample and allowed to mix in this split-gate geometry. Among the expected quantum Hall features, an unexpected ...

We investigate transport in a gate-defined graphene quantum point contact in the quantum Hall regime. Edge states confined to the interface of p and n regions in the graphene sheet are controllably brought together from opposite sides of the sample and allowed to mix in this split-gate geometry. Among the expected quantum Hall features, an unexpected ...

We discuss the characteristics of known extremely metal-poor (EMP) stars in the Galaxy using the Stellar Abundances for Galactic Archaeology (SAGA) data base. We find the transition of the initial mass function to be at [Fe/H]�-2 from the viewpoint of the distribution of carbon abundance and the frequency of carbon-enhanced stars. Analyses of ...

Acceleration of energetic ions in solar flares produces narrow and broad nuclear ?-ray de-excitation lines, by nuclear interactions with the ambient solar atmosphere. Observations of several solar flare ?-ray spectra have been made since 1972 by satellite-borne ?-ray spectrometers on OSO 7, HEAO 3, SMM, HINOTORI, GRANAT, YOHKOH and CGRO. The line intensities depend directly on the ambient and ...

The management of tropical forest in timber concessions has been proposed as a solution to prevent further biodiversity loss. The effectiveness of this strategy will likely depend on species-specific, population-level responses to logging. We conducted a survey (749 line transects over 3450 km) in logging concessions (1.2 million ha) in the northern Republic of Congo to examine the impact of ...

BackgroundIn the emerging field of community and ecosystem genetics, genetic variation and diversity in dominant plant species have been shown to play fundamental roles in maintaining biodiversity and ecosystem function. However, the importance of intraspecific genetic variation and diversity to floral abundance and pollinator visitation has received little ...

Two models of the time dependent chemical evolution of stable dense and translucent clouds are presented: one for pure gas phase chemistry and the other in which solid grain chemistry is included along with the gas. Comparing the results using these two schemes for the theoretical abundances of certain key molecules shows that including the dust provides a significantly (often ...

We present the results of two studies investigating the abundance and physical state of polycyclic aromatic hydrocarbons (PAHs) in the Small Magellanic Cloud (SMC). PAHs play important roles in the thermal balance and chemistry of the interstellar medium and their mid-IR emission bands are bright and detectable out to high redshift. Observations with ISO and Spitzer have shown ...

This study describes temporal and spatial abundance patterns of echinoderm larvae in La Parguera, Puerto Rico. For the temporal study, larvae were sampled by a series of monthly tows taken with a 64 microm mesh net between the new and full moon from April 2005 to July 2006, September 2006 and August 2007. In order to measure spatial variation of echinoderm larval ...

We have studied the temporal variation in viral abundances and community assemblage in the eutrophic Lake Loosdrecht through epifluorescence microscopy and pulsed field gel electrophoresis (PFGE). The virioplankton community was a dynamic component of the aquatic community, with abundances ranging between 5.5?�?10⁷ and ...

The red tide of dinoflagellate, Cochlodinium polykrikoides has frequently occurred in coastal waters, causing severe damage to fisheries. In the present study, the algicidal bacterium Alteromonas sp. A14 isolated from the southern coast of Korea was applied to a red tide of C. polykrikoides in a laboratory experiment. In the experiment, the abundance of the strain A14 was ...

Intraspecific variation and genotypic diversity of host-plants can affect the structure of associated arthropod communities and the dynamics of populations. Similarly, neighboring plants can also affect interactions between host-plants and their associated arthropods. However, most studies on the effects of host-plant genotypes have largely ignored the potential effects of neighboring host-plants ...

Metagenomics is the study of microbial communities sampled directly from their natural environment, without prior culturing. Among the computational tools recently developed for metagenomic sequence analysis, binning tools attempt to classify all (or most) of the sequences in a metagenomic dataset into different bins (i.e., species), based on various DNA composition patterns (e.g., the tetramer ...