Carbon isotopic variability in the composite pelagic foodweb of four oligotrophic lakes: feeding diversity or metabolic fractionations?
- 1 October 1995
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Plankton Research
- Vol. 17 (10) , 1993-1997
- https://doi.org/10.1093/plankt/17.10.1993
Abstract
The δ13C values of a simple pelagic foodweb (zooplankton, mysids, lake trout) composited from four oligotrophic Canadian Shield lakes showed no relationships to either animal trophic position (δ15 or lipid content (C/N ratios). Carbon isotopic variability is therefore thought to be reflective of feeding diversity and not organismal metabolic fractionations due to either biochemical or trophic effects.Keywords
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