00000nam 2200000zi 4500 9.903609 CaOODSP 20221107180313 m o d f cr |n||||||||| 210924s1981 oncb o f000 0 eng d CaOODSP eng rda CaOODSP nl----- En36-539/10-1981E-PDF Brown, J. R. (James Raymond), 1956- author. 1981 Canadian Wildlife Service / J.R. Brown. [Burlington, Ont.] : Environment Canada, National Water Research Institute = Environnement Canada, Institut national de recherche sur les eaux, 1981. 1 online resource (iv, 15 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier [Unpublished manuscript] Digitized edition from print [produced by Environment and Climate Change Canada]. "The surveillance of toxic substances in Great Lakes wildlife by the Canadian Wildlife Service was continued in 1981 with the support of Technical Operations Division. The CWS has been regularly monitoring the affects of toxic substances on the Herring Gull in the four Canadian Great Lakes since 1975. These affects are reflected in egg-loading and the bird's reproductive success rate"--Introduction. Larus argentatus Effect of water pollution on Great Lakes (North America) Goéland argenté Effets de la pollution de l'eau sur Grands Lacs (Amérique du Nord) National Water Research Institute (Canada), issuing body. Unpublished manuscript (National Water Research Institute (Canada)) (CaOODSP)9.901451 PDF 749 KB https://publications.gc.ca/collections/collection_2021/eccc/en36-539/En36-539-10-1981-eng.pdf