00000nam 2200000za 4500 9.856451 CaOODSP 20241203113643 cr ||||||||||| 180511s1993 oncbd ob f000 0 eng d 0662175328 0831-6481 CaOODSP eng eng fre n-cn--- CW69-5/91E-PDF CW69-5/91E Noble, David G. Environmental contaminants in Canadian raptors, 1965-1989 [electronic resource] / David G. Noble, John E. Elliott, J. Laird Shutt. Ottawa : Canadian Wildlife Service, Headquarters, 1993. xix, 225 p. : charts, maps. Technical report series ; no. 91 Imperfect copy: cover and verso of cover are wanting. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 153-171). "The results of chemical analyses of raptor eggs and tissues collected by the Canadian Wildlife Service between 1965 and 1988 are summarized. Residue levels are reported for DDE, DDD, DDT, dieldrin, heptachlor epoxide, HCB, PCBs, beta-HCH, oxychlordane, mirex and mercury in twenty-four species of Canadian raptors. Of these, only three tissue samples contain residues (mercury or DDE) indicative of acute poisoning. Critical toxic effect values for DDE, dieldrin, heptachlor epoxide and mercury in eggs are determined from the published literature, and the proportions of sampled eggs with residues in excess of those levels are reported. Contaminant data for eight species are analyzed for temporal trends. Results are discussed with respect to changes in the status of raptor populations in Canada"--Abstract, p. vi. Issued also in print format. Includes abstract and summary in French. Birds of prey Pesticides Pollutants Toxicology Elliott, John E., 1953- Shutt, J. Laird. Canada. Environment Canada. Canadian Wildlife Service. Headquarters. Technical report series (Canadian Wildlife Service) no. 91. (CaOODSP)9.504438 PDF 10.25 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-91-eng.pdf