Environmental contaminants in pre-fledged common mergansers : Wapiti river, August 1992 / prepared for the Northern River Basins Study under project 2363-C1 by Mark Wayland. : R71-49/3-48E-PDF

"Among the guiding questions of the Northern River Basins Study, questions 4 and 11 ask about the nature and contents of the contaminants entering the system and about their effects on riparian wildlife, respectively. This report examines these questions by focusing on contaminants in one riparian species, the Common Merganser. In early August, 1992, pre-fledged Common Mergansers were collected upstream and downstream from the Weyerhaeuser Canada pulp mill (formerly Proctor and Gamble) on the Wapiti River, near Grande Prairie, Alberta. Four birds were collected upstream from the mill and six were collected downstream from the mill. Analyses of dioxins and furans and chlorinated phenolics were made on pooled liver homogenates (n=1 for both the upstream and downstream sites). Organochlorine insecticides, PCBs and metals were analyzed in liver or kidney tissue on an individual basis"--Report summary.

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