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Carbon stable isotopes reveal relative contribution of shelf-slope production to the northern California Current pelagic community
Carbon stable isotopes shelf-slope production the northern California Current pelagic community
2014/4/18
To better delineate the relative contribution of shelf and slope production to the northern California Current (NCC) pelagic community, we examined the cross-shelf distribution ofd13 C in 19 species o...
Compound-specific stable isotopes of organic compounds from lake sediments track recent environmental changes in an alpine ecosystem, Rocky Mountain National Park, Colorado
Compound-specific stable isotopes organic compounds lake sediments environmental changes alpine ecosystem Rocky Mountain National Park Colorado
2014/4/18
Compound-specific nitrogen, carbon, and hydrogen isotope records from sediments of Sky Pond, an alpine lake in Rocky Mountain National Park (Colorado, United States of America), were used to evaluate ...
Stable isotopes in subtidal food webs: Have enriched carbon ratios in benthic consumers been misinterpreted?
subtidal food webs Have enriched carbon ratios
2014/5/5
We examined the hypothesis that the d13
C of benthic consumers is depleted in offshore, deeper waters where
kelp and benthic microalgae are absent by conducting three analyses: (1) we analyzed d13
...
Protozoans as a food source for Antarctic krill, Euphausia superba: Complementary insights from stomach content, fatty acids, and stable isotopes
Protozoans a food source Antarctic krill Euphausia superba Complementary insights stomach content fatty acids stable isotopes
2014/5/5
We studied the diet of Antarctic krill, Euphausia superba, at five stations across the southwest Atlantic sector in summer 2003 by analyzing stomach content, fatty acids, and stable isotopes on the sa...
Spatial variability of stable isotopes and fossil pigments in surface sediments of Alaskan coastal lakes: Constraints on quantitative estimates of past salmon abundance
Spatial variability stable isotopes fossil pigments surface sediments Alaskan coastal lakes Constraints on quantitative estimates past salmon abundance
2014/5/4
We quantified spatial patterns of stable isotopes of N and C (δ15N, δ13C) and fossil pigment concentrations in the uppermost 10 mm of sediment (,10 yr) from 74 profundal locations and three spawning-s...
Stable isotopes in deep-sea corals and a new mechanism for “vital effects”
Stable isotopes deep-sea corals new mechanism vital effects
2014/4/9
Offsets from isotopic equilibrium in biogenic carbonates have complicated paleoclimate reconstructions for decades. A new archive of climate, deep-sea corals, is used to evaluate the calcification pro...
Interpreting stable isotopes in food webs: Recognizing the role of time averaging at different trophic levels
stable isotopes food webs averaging at different trophic levels
2014/5/26
Lake Tanganyika, East Africa, has a simple pelagic food chain, and trophic relationships have been established previously from gut-content analysis. Instead of expected isotopic enrichment from phytop...
Interpreting stable isotopes from macroinvertebrate foodwebs in saline wetlands
Interpreting stable isotopes macroinvertebrate foodwebs saline wetlands
2014/5/26
We compared stable-isotope (δ13C and δ15N) and gut-content analyses of macroinvertebrate foodwebs in saline wetlands of the Laramie Basin, Wyoming, USA. Standard assumptions of stable-isotope fraction...