From MarineSpecies Traits Wiki
Biomagnification is bioaccumulation through ingestion of prey items. It causes contaminant concentration to increase with increasing trophic level. Because of biomagnification low trophic level species (like phytoplancton) have a lower contaminent concentration than high trofic level species (like birds).
- Biology of marine birds. Schreiber, E.A. & Burger, J. (Eds). 2002. Boca Raton, Florida: CRC Press. 722 pp.