Food chain sources of polychlorinated dioxins and furans to great blue herons, ardea herodias, foraging in the fraser river estuary, british columbia. Technical report series no. no. 169
Technical Report
·
OSTI ID:147320
This paper presents results of determinations of polychlorinated dibenzodioxin (PCDD) and polychlorinated dibenzofuran (PCDF) levels in the prey of great blue herons foraging on the Fraser River estuary tidal flats. Observations of herons foraging at Iona and Westham Islands showed that starry flounder (Platichthys stellatus) and Pacific staghorn sculpin (Leptocottus armatus) were the major prey species throughout the year. The paper includes measurements of PCDD/PCDF levels in those two species and others such as redside shiner (Richardsonius balteatus), peamouth chub (Mylocheilus caurinum), and shiner perch (Cymatogaster aggregata). The paper concludes with a discussion of the role of contaminated inshore fish on the entry of PCDD/PCDF into herons.The purpose of the Ecological Monitoring and Assessment Network is to provide information and understanding needed for the sustainable management of Canada`s resources and resource-based industries. This document presents the proceedings of the first meeting of the Network. It includes presentations by federal government representatives on ecological monitoring and research programs in federal departments, reviews of progress in establishing Ecological Science Cooperatives for ecological monitoring and research, presentations on topical workshops, and workshop summaries. The workshops were arranged by ecological issue (biodiversity, climate change, ultraviolet radiation, toxic chemicals, and cumulative effects). They discussed and recommended local and national goals, objectives, and deliverables for ongoing research, monitoring, and synthesis related to the ecological effects of each issue.
- Research Organization:
- Canadian Wildlife Service, Delta, BC (Canada). Pacific and Yukon Region
- OSTI ID:
- 147320
- Report Number(s):
- MIC--95-06705/XAB; SSC-CW--69-5/169E
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:7033546
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OSTI ID:7086666