Trophic transfer of metals along freshwater food webs: Evidence of cadmium biomagnification in nature

@article{Croteau2005TrophicTO,
  title={Trophic transfer of metals along freshwater food webs: Evidence of cadmium biomagnification in nature},
  author={Marie-No{\"e}le Croteau and Samuel N. Luoma and A. Robin Stewart},
  journal={Limnology and Oceanography},
  year={2005},
  volume={50}
}
We conducted a study with cadmium (Cd) and copper (Cu) in the delta of San Francisco Bay, using nitrogen and carbon stable isotopes to identify trophic position and food web structure. Cadmium is progressively enriched among trophic levels in discrete epiphyte‐based food webs composed of macrophyte‐dwelling invertebrates (the first link being epiphytic algae) and fishes (the first link being gobies). Cadmium concentrations were biomagnified 15 times within the scope of two trophic links in both… 

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PRIMARY CONSUMER δ13C AND δ15N AND THE TROPHIC POSITION OF AQUATIC CONSUMERS

Stable nitrogen isotope signatures (δ15N) are increasingly used to infer the trophic position of consumers in food web studies. Interpreting the δ15N of consumers relative to the δ15N characterizing