Organochlorine Contaminants in Herring Gull Eggs from the Detroit and Niagara Rivers and Saginaw Bay (1978–1982): Contaminant Discriminants

Autor: John Struger, D. J. Hallett, Pierre Mineau, D.V. Weseloh
Rok vydání: 1985
Předmět:
Zdroj: Journal of Great Lakes Research. 11:223-230
ISSN: 0380-1330
DOI: 10.1016/s0380-1330(85)71766-2
Popis: The levels of organochlorine residues found in eggs of herring gulls are reported for the Detroit River, the Niagara River, and Saginaw Bay from 1978 to 1982. Levels were determined for DDT, DDE, PCBs, mirex, hexachlorobenzene, dieldrin, mercury, and seventeen other organochlorine compounds at various intervals during the study. The levels of PCBs and HCB in eggs from Fighting Island from the Detroit River are among the greatest of any found in more than 25 colonies surveyed since 1978. Organochlorine levels from these sites are compared with data from our Annual Monitor Colonies. Discriminant function analysis indicates that levels of OCs found in eggs of herring gulls from these locations are statistically unique. These results indicate the herring gull has value as an indicator of regional chemical contamination in the Great Lakes.
Databáze: OpenAIRE