Lipid extraction has little effect on the δ 15 N of aquatic consumers

  title={Lipid extraction has little effect on the δ 15 N of aquatic consumers},
  author={Travis Ingram and Blake Matthews and Chris Harrod and Tom Stephens and Jonathan Grey and Russell W. Markel and Asit Mazumder},
Proper application of stable isotopes (e.g., δ15N and δ13C) to food web analysis requires an understanding of all nondietary factors that contribute to isotopic variability. Lipid extraction is often used during stable isotope analysis (SIA), because synthesized lipids have a low δ13C and can mask the δ13C of a consumer’s diet. Recent studies indicate that lipid extraction intended to adjust δ13C may also cause shifts in δ15N, but the magnitude of and reasons for the shift are highly uncertain… CONTINUE READING
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