... Title : THE SIGNIFICANCE OF ABIOTIC AND BIOTIC FACTORS OF THE ENVIRONMENT DURING THE ACCLIMATIZATION OF WATER ...

... Accession Number : ADA512772. Title : Abiotic Reductive Dechlorination of Tetrachloroethylene and Trichloroethylene in Anaerobic Environments. ...

Abiotic formation of hydrocarbons under hydrothermal conditions: ... Isotopic signatures of abiotic organic synthesis under geologic conditions [Abstract]. ...

Relationships between egg size, egg components, and neonate size have been investigated across a wide range of oviparous taxa. Differences in egg traits among taxa reflect not only phylogenetic differences, but also interactions between biotic (i.e., maternal resource allocation) and abiotic (i.e. nest ...

Effects of biotic (shrimp) and abiotic (discharge) factors on the depositional environment were quantified in a montane stream in Puerto Rico. Electricity was used experimentally to exclude ... ...

Brine-shrimp egg cases in growth cavities in modern stromatolites in the Great Salt Lake, Utah, are replaced by aragonite and cemented together by aragonite cement. The fabric of the cement changes dramatically as the distance from the egg case increases. The cement within 50 to 70 ?m of the egg case exhibits a random fabric of 10 to ...

... to assess the relative importance of biotic and abiotic factors in shaping ant community structure and species ... whether competitive interactions or some component of the abiotic environment (e.g annual...

SUMMARYObjective. Unravelling the determinants of parasite life-history traits in natural settings is complex. Here, we deciphered the relationships between biotic, abiotic factors and the variation in 4 life-history traits (body size, egg presence, egg number and egg size) in the fish ectoparasite Tracheliastes ...

to better understand the abiotic factors underlying a natural plant productivity gradient. We related soil suggest that although richness is influenced directly by the filtering effects of the abiotic environment. However, such predictions are complicated by the fact that diversity, productivity, and the abiotic

Both abiotic and biotic transformations of pesticides occur simultaneously in the environment. Although the dominance of abiotic transformations was demonstrated in some cases, it often was assumed that biotic transformations control the degradation of pe...

Both abiotic and biotic transformations of pesticides occur simultaneously in the environment. lthough the dominance of abiotic transformations was demonstrated in some cases, it often was assumed that biotic transformations control the degradation of pesticides in natural system...

Abiotic transformations, such as reductive dehalogenation and nucleophilic substitution, can influence the fate of halogenated aliphatic compounds in aqueous environments. Sulfide, commonly found in hypoxic environments such as landfill leachate, hazardous waste plumes, and salt ...

On Earth, biological processes, mainly nitrification and denitrification, are thought to dominate nitrous oxide production in the environment. ...

Abiotic and biotic drivers of seedling survival in a hurricane-impacted tropical forest Liza S and seedling densities. Thus, in hurricane-impacted forests, large variations in abiotic and biotic conditions in a subtropical, montane forest in Puerto Rico. We quantified changes in the biotic and abiotic environment

The reproductive potential among adult grasshoppers of one season is the most important factor governing the potential relative population of the subsequent season. Numerous biotic and abiotic factors affect the number and potential viability of eggs for ...

The high pH in parts of subduction zones may promote abiotic formation of carbohydrates like pentose sugars as well as amino acids, nucleosides and even nucleotides, since pyrophosphate is stable under alkaline conditions at low water-rocks ratios.

The degradation of TCE (C2HCl3) to carbon dioxide (CO2) and chloride (Cl-) has been reported to occur during thermal remediation of subsurface environments. The overall goal of this study was to evaluate abiotic degradation of TCE at el...

is a rather coarse tool for some purposes because so many climatic, biotic, and other abiotic factors loops within abiotic�biotic sys- tems and changing ecological networks and their result- ing feed organisms interact with their environment, biotic and abiotic. Ecometrics measures these interactions

Exposure to contaminants is one hypothesis proposed to explain the global decline in shorebirds, and is also an increasing concern in the Arctic. We assessed potential contaminants (As, Be, Cd, Co, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Sb, Se, Tl, V, and Zn) at a shorebird breeding site in Nunavut, Canada. We compared element levels in soil, invertebrates and shorebird blood to assess evidence for ...

The scope of this technical report covers four factors: (1) Gear currently used to sample ichthyoplankton; (2) sources of error associated with collection of ichthyoplankton samples used to assess power plant entrainment mortality; (3) abiotic and biotic ...

... P. Spencer, E. J. Harris, and D. M. Ichimura. 1999. Mass-rearing of the tephritid fruit fly ... ...

exists concerning the spectral reflectance signatures of substances (both biotic and abiotic) found in aquatic environments. These data include studies that ...

... 2004) reported that CL-20 abiotically degrades in oxic environments in the presence of 2:1 phyllosilicate clays (hectorite, montmorillonite, nontronite ...

Mediterranean Habitat Grassland Wood Pineland Open woodland Scrubland Ground structure Short grasses Moist

Arthropod communities respond to plant diversity, functional diversity, and the abiotic environment. In this project, our aim is to assess the extent ... ...

The concentrations of copper in the abiotic and biotic compartments of freshwater ecosystems, and the effects on biota of increased amounts of copper in the water and sediments are reviewed. Data compiled and discussed include the quantities and physicoch...

Aug 7, 2011 ... The Astrobiology paper provides a mechanistic model to account for the .... Saline Lakes and Gypsum Dunes in the Rio Grande Rift System as ...

... of biological traits associated positively (+) or negatively (�) with human ... abiotic environment such as light and moisture availability (Spies, 1998). ... ...

ABSTRACT BODY: Introduction: Salmonellosis may be contracted by the consumption of raw or undercooked eggs. In order to develop effective sanitation practices it is helpful to understand the location of Salmonella reservoirs in processing environments. Shell egg processing reservoirs for Salmonella...

Fenthion (Baytex), an organophosphate insecticide, is frequently applied to salt-marsh environments to control mosquitoes. Shake-flask tests were used to study rates of abiotic and biotic degradation of fenthion and the environmental parameters that affec...

Fenthion (Baytex), an organophosphate insecticide, is frequently applied to salt-marsh environments to control mosquitoes. hake-flask tests were used to study rates of abiotic and biotic degradation of fenthion and the environmental parameters that affect these rates. Water or wa...

Monthly sampling for ichthyoplankton was conducted at three stations very near to the coast (near to shore shallow stations before the surf zone in direction to the shoreline) of Atlantic northwestern Portugal within contrasting localities: rocky shore, in front of a sandy beach receiving an estuary and a fishing port with heavy anthropogenic impact. Sampling was conducted from August 2002 to ...

Is reproduction by adult female insects limited by the finite time available to locate hosts (time limitation) or by the finite supply of eggs (egg limitation)? An influential model predicted that stochasticity in reproductive opportunity favors elevated fecundity, rendering egg limitation sufficiently rare that its importance would be ...

in the painted turtle (Chrysemys picta) over seven nesting seasons in the field. In addition, we quantify annual a population of painted turtles (Chrysemys picta) to understand how multiple factors generate variation in egg were then carefully counted and weighed (typi- Fig. 1. Painted turtle (Chrysemys picta) nest with high

There is a desired by US consumers for eggs produced by hens in alternative production systems. As the retail shell egg market offers these products to accommodate consumer demands, additional information is needed to ensure processing methodologies result in safe eggs from all egg sources. A stud...

Alternative egg production methods are becoming more popular with US consumers. As the drive to expand the retail shell egg market to accommodate consumer shifts proceeds, a need arises for additional information to ensure processing methodologies result in safe eggs from all egg sources. A study ...

My long-term goal is to review creatively both our knowledge about the interaction of marine plankton with the hydrographic and chemical environment and the feedback from the planktonic processes to the abiotic environment. I use older observations and ev...

In the environment, hydrolysis reactions can be mediated biologically or occur via abiotic processes. For biotic hydrolysis reactions, the rate of hydrolysis often is proportional to bacterial biomass and/or specific enzyme concentrations (activities) in ...

Condition-specific competition, wherein competitive superiority varies with the abiotic environment, can determine species� distributions in a spatially heterogeneous environment. We investigated this phenomenon with two competing container-dwelling mosquitoes. We tested the hypothesis that habitat drying alters the outcome of ...

Jun 10, 2011... temperature, and gas environment) on orbit and the fixation of the eggs for ... Up to 36 eggs in centrifuge carousels can be exposed to ...

With a little kelp from my friends: In response to biotic and abiotic stress, the brown algal kelp Laminaria digitata releases volatile fatty acid aldehydes under laboratory conditions and in its natural environment (red). In response to 4-HHE treatment, L. digitata releases (13S)-HOTrE (green). These results support the hypothesis that these compounds may ...

Land plants are anchored in one place for most of their life cycle and therefore must constantly adapt their growth and metabolism to abiotic stresses such as light intensity, temperature and the availability of water and essential minerals. Thus, plants� subsistence depends on their ability to regulate rapidly gene expression in order to adapt their physiology to their ...

Broad Objective: Students will be assessed on their knowledge of ecology. Students will use their knowledge to determine the biotic and abiotic factors present in the environment. Specific Objectives; 1. Students will be able to define the term ecology, and explain why ecology is important. 2. Students will be able to the term ecosystem and give examples ...

Abiotic stress conditions such as drought, heat, or salinity cause extensive losses to agricultural production worldwide. Progress in generating transgenic crops with enhanced tolerance to abiotic stresses has nevertheless been slow. The complex field environment with its heterogenic conditions, abiotic stress ...

Although it is widely believed that production of organic compounds by Fischer Tropsch synthesis and related processes occurs in many geologic environments, unambiguous identification of compounds with an abiotic origin in natural samples has been hampered by a lack of means to discriminate between abiotic compounds and organic matter ...