Results 11 to 20 of about 3,667,411 (200)

Structure and flow of carbon and nitrogen to the western Irish Sea Nephrops norvegicus fishery: a stable isotope approach. [PDF]

open access: yes, 2008
PhDStable isotope analysis was used to describe the structure and flow of organic matter (carbon and nitrogen) from primary production in the water column to the benthos, and into secondary production that supports a fishery for the lobster Nephrops ...
Hill, Jacqueline M
core   +4 more sources

Stable carbon isotopes of wood: a clue to palaeoclimate? [PDF]

open access: yesPalaeogeography, Palaeoclimatology, Palaeoecology, 2002
Abstract Detailed stable carbon isotope and molecular investigations were undertaken on a number of archaeological and fossil wood specimens to provide insights into their use as rigorous independent palaeoclimatic and palaeoenvironmental parameters.
Bergen, P.F. van, Poole, I.J.
openaire   +3 more sources

Applications of stable water and carbon isotopes in watershed research: Weathering, carbon cycling, and water balances [PDF]

open access: yes, 2011
Research on rivers has traditionally involved concentration and flux measurements to better understand weathering, transport and cycling of materials from land to ocean.
Petelet-Giraud, Emmanuelle   +23 more
core   +1 more source

Conduits of contamination to contemporary food webs of the Norfolk Broads [PDF]

open access: yes, 2011
PhDDuring the 1960s-1980s antifouling applications containing the organotin tributyltin (TBT) were applied to craft on the Norfolk Broads, leaving a legacy of contaminants in sediments.
Laws, Jacob
core   +4 more sources

Seasonal Cyclicity in Trace Elements and Stable Isotopes of Modern Horse Enamel. [PDF]

open access: yesPLoS ONE, 2016
The study of stable isotopes in fossil bioapatite has yielded useful results and has shown that bioapatites are able to faithfully record paleo-environmental and paleo-climatic parameters from archeological to geological timescales.
Niels J de Winter   +2 more
doaj   +1 more source

Stable and radiogenic isotopes as tracers for soil degradation [PDF]

open access: yes, 2008
Soil erosion seriously threatens mountain slopes. Direct measurement of soil erosion in the field is difficult and needs long term recording. However, stable and radiogenic isotopes are potential tracers for soil erosion estimation and would enable a ...
Schaub, Monika
core   +1 more source

Carbon stable isotope turnover and fractionation in grass carp Ctenopharyngodon idella tissues

open access: yesAquatic Biology, 2013
Carbon stable isotope signatures can effectively trace food sources, elucidate trophic interactions, and presumably reflect food web structure. The present study conducted a diet-switch experiment using freshwater teleost grass carp Ctenopharyngodon ...
B Xia, QF Gao, SL Dong, F Wang
doaj   +1 more source

Stable carbon isotopes and human evolution [PDF]

open access: yesProceedings of the National Academy of Sciences, 2013
Paleoanthropologists have long relied on skull and tooth morphology to infer fossil hominin diets, but from the early 1980s, they have also looked to microscopic wear traces in dental enamel, and since the early 1990s, they have looked increasingly to the stable isotope composition of skeletal tissues.
openaire   +2 more sources

Freezing and chemical preservatives alter the stable isotope values of carbon and nitrogen of the Asiatic clam (Corbicula fluminea) [PDF]

open access: yes, 2010
We tested the impacts of most common sample preservation methods used for aquatic sample materials on the stable isotope ratios of carbon and nitrogen in clams, a typical baseline indicator organism for many aquatic food web studies utilising stable ...
Dorothée Kopp   +9 more
core   +1 more source

Photosynthetic Fractionation of the Stable Isotopes of Oxygen and Carbon [PDF]

open access: yesPlant Physiology, 1993
Isotope discrimination during photosynthetic exchange of O2 and CO2 was measured using enzyme, thylakoid, and whole cell preparations. Evolved oxygen from isolated spinach thylakoids was isotopically identical (within analytical error) to its source water.
R. D., Guy, M. L., Fogel, J. A., Berry
openaire   +2 more sources

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