Carbon and nitrogen stable isotope ratios in body tissue and mucus of feeding and fasting earthworms ( Lumbricus festivus )

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Fractionation and turnover of stable carbon isotopes in animal tissues: Implications for ?13C analysis of diet

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Leonard Z. Gannes, Diane M. O’Brien, Carlos Martı́nez del Rio · Ecology · 1997 · 962 citations

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Stable-Nitrogen Isotope Enrichment in Avian Tissues Due to Fasting and Nutritional Stress: Implications for Isotopic Analyses of Diet

Keith A. Hobson, Ray T. Alisauskas, Robert G. Clark · Ornithological Applications · 1993 · 888 citations · Full text

Life Sciences, Animal Sciences, Zoology +13