00000cam 2200000za 4500 9.855403 CaOODSP 20241203113642 cr ||||||||||| 180417s1972 oncbd #o f00| 0 eng d CaOODSP eng eng fre n-cn-ab CW69-1/13E-PDF Dirschl, Herman J. Evaluation of ecological effects of recent low water levels in the Peace-Athabasca Delta [electronic resource] / by Herman J. Dirschl. Ottawa : Canadian Wildlife Service, c1972. 28 p. : maps, charts. Occasional paper ; no. 13 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Concern ahout the ecological effects of the altered water regime of the Peace-Athabasca Delta, following completion of the W.A.C. Bennett Dam on the Peace River, led the Canadian Wildlife Service in 1968 to initiate an ecological study. Its objectives are to evaluate the short- and long-term effects of the altered water regime on the ecosystem and to evaluate the environmental parameters which have to be considered in designing measures which would return the delta to a desirable state. This report is a preliminary account of our study of plant succession on exposed silt surfaces"--Abstract. Includes abstract in French. gccst Rivers gccst Botany gccst Ecology Canada. Environment Canada. Canadian Wildlife Service. Occasional paper (Canadian Wildlife Service) no. 13 (CaOODSP)9.504780 PDF 4.19 MB https://publications.gc.ca/collections/collection_2018/eccc/CW69-1-13-eng.pdf