Results 31 to 40 of about 248,597 (344)

Reactive and mixing processes governing ammonium and nitrate coexistence in a polluted coastal aquifer [PDF]

open access: yes, 2018
A comprehensive hydrochemical, stable isotope and microbial analyses characterisation has been performed to evaluate the sources of groundwater, nitrogen pollution and degradation processes occurring in an industrial polluted coastal aquifer in the ...
Aravena, Ramon   +4 more
core   +2 more sources

Tree growth acceleration and expansion of alpine forests: The synergistic effect of atmospheric and edaphic change. [PDF]

open access: yes, 2016
Many forest ecosystems have experienced recent declines in productivity; however, in some alpine regions, tree growth and forest expansion are increasing at marked rates.
Horwath, William R   +5 more
core   +2 more sources

Stable isotopes of Hawaiian spiders reflect substrate properties along a chronosequence. [PDF]

open access: yes, 2018
The Hawaiian Islands offer a unique opportunity to test how changes in the properties of an isolated ecosystem are propagated through the organisms that occur within that ecosystem.
Dawson, Todd   +2 more
core   +2 more sources

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems? [PDF]

open access: yesHydrology and Earth System Sciences, 2016
Urbanization strongly impacts aquatic ecosystems by decreasing water quality and altering water cycles. Today, much effort is put towards the restoration and conservation of urban waterbodies to enhance ecosystem service provision, leading to liveable ...
E. S. Reichwaldt, A. Ghadouani
doaj   +1 more source

Starvation effects on nitrogen and carbon stable isotopes of animals: an insight from meta-analysis of fasting experiments

open access: yesRoyal Society Open Science, 2017
Nitrogen and carbon stable isotopic compositions (δ15N and δ13C) of consumers have been used for physiological and food web studies. Previous studies have shown δ15N and δ13C values are affected by several biological and environmental factors during ...
H. Doi   +2 more
semanticscholar   +1 more source

Stable Isotope (δ13C, δ15N, δ18O, δD) Composition and Nutrient Concentration of Red Sea Primary Producers

open access: yesFrontiers in Marine Science, 2018
Measurements of isotopic composition of marine primary producers are a valuable tool to follow and trace the source and cycling of organic matter in the marine systems, as well to describe the physiological status of aquatic photosynthetic organisms ...
Carlos M. Duarte   +11 more
doaj   +1 more source

Effects of spawning Pacific salmon on terrestrial invertebrates: Insects near spawning habitat are isotopically enriched with nitrogen‐15 but display no differences in body size

open access: yesEcology and Evolution, 2021
When Pacific salmon (Oncorhynchus spp.) spawn and die, they deliver marine‐derived nutrient subsidies to freshwater and riparian ecosystems. These subsidies can alter the behavior, productivity, and abundance of recipient species and their habitats ...
Nicola F. Rammell   +3 more
doaj   +1 more source

Provenance does matter: links between winter trophic segregation and the migratory origins of European robins [PDF]

open access: yes, 2016
Amongst migratory species, it is common to find individuals from different populations or geographical origins sharing staging or wintering areas.
Bearhop, Stuart,   +7 more
core   +1 more source

Stable Isotope Compositions of Wild and Farmed S. Paramoamosion and its Implication for Tracebility

open access: yesJournal of Isotopes, 2014
To evaluate the possibility of using stable isotopes for discriminating wild and farmed mangrove crabs, Stable carbon and nitrogen isotope ratios of Scylla paramamosion tissues were analyzed. The carbon and nitrogen isotope ratios of wild S. paramamosion
GUO Jie-min1,2;LIN Guang-hui1,3
doaj   +1 more source

Stable C and N Isotope Composition of European Anchovy, Engraulis encrasicolus, from the Marmara Sea and the Black Sea

open access: yesTurkish Journal of Agriculture: Food Science and Technology, 2021
The aim of this study is to determine the stable isotope ratios of anchovy caught in the Black Sea and Marmara Sea. Stable carbon and nitrogen isotope ratios (δ13C, δ15N) of European anchovy (Engraulis encrasicolus) were estimated at four sampling sites (
Tanju Mutlu
doaj   +1 more source

Home - About - Disclaimer - Privacy