SS4.07 Lipids/Fatty Acids in Ecological Research
Date: Tuesday, June 11, 2002
Location: Poster Session - VCC
 
Mueller-NavarraDC, University of California, Davis, USA, dcnavarra@ucdavis.edu
Chandra, S, , University of California, Davis, USA, schandra@ucdavis.edu
Goldman, C, R, University of California, Davis, USA, crgoldman@ucdavis.edu
 
TROPHO-DYNAMIC RELATIONSHIPS IN LAKE TAHOE: DO FATTY ACIDS GIVE NEW INSIGHTS?
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Between summer 1997 and summer 1999 we sampled several of the main representatives of the Lake Tahoe pelagial food web; seston (i.e., the phytoplankton community), Diaptomus tyrrelli, Epischura nevadensis, Mysis relicta, and lake trout (Salvelinus namaycush). By analyzing those samples for stable isotopes and fatty acids we were able to retrieve information on their tropho-dynamic positioning and relationships. To reveal the suitability of fatty acids as biomarkers, we also envisioned the possibility and extent of fatty acid conversion when passing through the food web.