Results 31 to 40 of about 2,596,999 (276)

Measure of carbon and nitrogen stable isotope ratios in cultured cells [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2004
We report the measurement of the natural isotope ratios of nitrogen and carbon in subcellular volumes of individual cells among a population of cultured cells using a multi-isotope imaging mass spectrometer (MIMS), [MIMS is the prototype of the NanoSIMS 50, Cameca, France.] We also measured the nitrogen and carbon isotope ratio in cells after they had ...
Peteranderl, R, Lechene, C
openaire   +2 more sources

Using 13C-, 15N-, and 18O stable isotope analysis of human bone tissue to identify transhumance, high altitude habitation and reconstruct palaeodiet for the early medieval Alpine population at Volders, Austria [PDF]

open access: yes, 2007
The analysis of stable isotopes of oxygen from structural carbonate in archaeological human bone samples originating from an early medieval cemetery in the Alpine community of Volders, Austria were used to determine the utilization of higher altitudes ...
McGlynn, George
core   +1 more source

Combined use of stable isotopes and fallout radionuclides as soil erosion indicators in a forested mountain site, South Korea [PDF]

open access: yes, 2013
The aim of this study is to assess and to validate the suitability of the stable nitrogen and carbon isotope signature as soil erosion indicators in a mountain forest site in South Korea.
Mabit, L.   +9 more
core   +2 more sources

A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]

open access: yes, 2003
1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (<sup>13</sup>C, &
Bearhop, S.   +11 more
core   +1 more source

Degradation changes stable carbon isotope depth profiles in palsa peatlands [PDF]

open access: yes, 2014
Palsa peatlands are a significant carbon pool in the global carbon cycle and are projected to change by global warming due to accelerated permafrost thaw. Our aim was to use stable carbon isotopes as indicators of palsa degradation.
Leifeld, J.   +5 more
core   +2 more sources

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

Determining trophic niche width: a novel approach using stable isotope analysis [PDF]

open access: yes, 2004
1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Bearhop, S.   +8 more
core   +1 more source

Stable isotope geochemistry of nitrogen in marine particulates [PDF]

open access: yes, 1983
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1983. ; Microfiche copy available in Archives and Science ; Vita. ; Bibliography: p. 268-279. ; by Susan M. Libes. ; Ph.D.
openaire   +4 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

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