Results 11 to 20 of about 248,597 (344)

Effect of Organic Food Intake on Nitrogen Stable Isotopes. [PDF]

Nutrients, 2020
Food choices affect the isotopic composition of the body with each food item leaving its distinct isotopic imprint. The common view is that the natural abundance of the stable isotopes of nitrogen (expressed as δ15N) is higher in animals than in plants that constitute our contemporary diets.
Mantha OL, Laxmi Patel M, Hankard R, De Luca A.   +3 more
europepmc   +4 more sources

Nitrogen stable isotope turnover and discrimination in lizards

Rapid Communications in Mass Spectrometry, 2021
Rationale Nitrogen stable isotope ratio (δ 15 N) processes are not well described in reptiles, which limits reliable inference of trophic and nutrient dynamics. In this study we detailed δ 15 N turnover
Robin W. Warne, Blair O. Wolf
openaire   +3 more sources

Stable carbon and nitrogen isotope enrichment in primate tissues [PDF]

Oecologia, 2010
Isotopic studies of wild primates have used a wide range of tissues to infer diet and model the foraging ecologies of extinct species. The use of mismatched tissues for such comparisons can be problematic because differences in amino acid compositions can lead to small isotopic differences between tissues.
Crowley, Brooke E., Carter, Melinda L., Karpanty, Sarah M., Zihlman, Adrienne L., Koch, Paul L., Dominy, Nathaniel J.   +5 more
openaire   +4 more sources

A pilot study of stable isotope fractionation in Bombyx mori rearing

Scientific Reports, 2023
Hydrogen, oxygen, carbon, and nitrogen isotopes derived from three different strains of silkworms at different life stages involved in silkworm rearing, were measured to understand the fractionation characteristics of stable isotopes at different stages ...
Hao Li, Yujie He, Jinzhong Lu, Liling Jia, Yong Liu, Dan Yang, Shuai Shao, Gang Lv, Hailiang Yang, Hailing Zheng, Yang Zhou, Zhiqin Peng   +11 more
doaj   +1 more source

Stable nitrogen isotopes in coastal macroalgae: Geographic and anthropogenic variability [PDF]

Science of The Total Environment, 2013
Growing human population adds to the natural nitrogen loads to coastal waters. Both anthropogenic and natural nitrogen is readily incorporated in new biomass, and these different nitrogen sources may be traced by the measurement of the ratio of stable nitrogen isotopes (δ(15)N).
González-Viana, I. (Inés), Bode, A. (Antonio)   +1 more
openaire   +4 more sources

Effects of Upwelling Intensity on Nitrogen and Carbon Fluxes through the Planktonic Food Web off A Coruña (Galicia, NW Spain) assessed with Stable Isotopes

Diversity, 2020
The input of new nutrients by upwelling in shelf waters, and the associated carbon and nitrogen fluxes, can be traced by their stable isotope signatures in organic matter.
Antonio Bode, Angel F. Lamas, Carmen Mompeán   +2 more
doaj   +1 more source

Towards a global interpretation of dual nitrate isotopes in surface waters [PDF]

, 2019
Modern anthropogenic activities have significantly increased nitrate (NO3-) concentrations in surface waters. Stable isotopes (delta N-15 and delta O-18) in NO3- offer a tool to deconvolute some of the human-made changes in the nitrogen cycle.
Boeckx, Pascal, Gooddy, DC, Venkiteswaran, JJ   +2 more
core   +2 more sources

Stable isotope analysis provides new information on winter habitat use of declining avian migrants that is relevant to their conservation [PDF]

, 2012
Winter habitat use and the magnitude of migratory connectivity are important parameters when assessing drivers of the marked declines in avian migrants. Such information is unavailable for most species.
BJM Stutchbury, BN Smith, C Eraud, C Fry, CM Perrins, CP Chamberlain, D Lack, D Norman, DI Pearson, DJ Pain, DS Wilcove, E Yohannes, FJ Sanderson, G Gory, GD Farquhar, GJ Morel, I Burfield, I Newton, JA Grey, Jason Newton, JC Sealy, JC Vogel, JF Kelly, JM Neto, John W. Mallord, JR Ehleringer, K Risely, KA Hobson, Karl L. Evans, KL Evans, L Jenni, L Svensson, L Zwarts, LA Hill, M Cardillo, M Schaub, MB Hernquist, MJA Werger, MS Webster, N Cooper, N Saino, Ofer Ovadia, P Chantler, P Marra, RA Robinson, RF Inger, RP Ellis, S Bearhop, S Bensch, S Oppel, S Shultz, SD Newsome, SH Ambrose, Shai Markman, T Szép, T Szép, TB Coplen, TB Oatley, TS Reichlin, WJ Peach   +59 more
core   +7 more sources

The Preparation of Carbon and Nitrogen Stable Isotopes Reference Materials Using Sediments from the Bohai and East China Seas

Yankuang ceshi, 2017
The stable isotope of carbon and nitrogen (δ13C and δ15N) in marine sediments have received much attention as they can be used to trace the sources of organic matter and are helpful in understanding the carbon cycle, climate change and the transformation
QIN De-di, HE Xing-liang, ZHANG Yuan-yuan, LI Feng, CHEN Yu-feng, ZHANG Pei-yu   +5 more
doaj   +1 more source

Effects of spoilage on nitrogen and carbon stable isotopes signatures of the clam Ruditapes decussatus [PDF]

, 2018
Fish and seafood products are highly susceptible to post-mortem spoilage due to autolytic reactions at start, then microbiological activity and eventually oxidative reactions.
A Lucas, AOAC, B Peres, BJ Petersen, BJ Petersen, C Alasalvar, DL Philips, DMAM Luykx, E Orban, EJ Conway, J Aníbal, J Aníbal, J Hoefs, K Hondula, MF Lehmann, R Machás, R Michener, R Venkataraman, REM Hedges, S Ghidini, SA Macko, SA Mohite, SB Kosiba, TB Coplen   +23 more
core   +1 more source