00000cam 2200000za 4500 9.856037 CaOODSP 20241203113642 cr ||||||||||| 180501s1992 oncbd||#o f00| 0 eng d CaOODSP eng eng fre n-cn--- CW69-1/76E-PDF Declines in Canadian amphibian populations [electronic resource] : designing a national monitoring strategy / Christine A. Bishop, Karen E. Pettit (editors). Ottawa : Canadian Wildlife Service, c1992. 120 p. : maps, charts. Occasional paper ; no. 76 Digitized edition from print [produced by Environment and Climate Change Canada]. Published for the workshop sponsors by the Canadian Wildlife Service. "Proceedings of a workshop sponsored by the Canadian Wildlife Service (Ontario Region) and the Metropolitan Toronto Zoo, held in Burlington, Ontario, 5-6 Octobre 1991." Includes bibliographical references. "Since 1989, there has been a growing realization that amphibian populations have been declining at an alarming rate. For many years before that, direct habitat loss such as infilling of wetlands was acknowledged as the major causative factor of a general loss of global biodiversity, including a loss of absolute and species numbers in the class Amphibia. However, the recent formation of the Declining Amphibian Populations Task Force (DAPTF) by the Species Survival Commission of the World Conservation Union (IUCN) was triggered by the disappearance of or drastic decreases in some populations of amphibians where suitable habitat appeared to remain, which indicated that things were even worse than we had thought. Scientists could not explain these declines because worldwide, and Canada wide, there has been a dearth of monitoring of changes in amphibian populations and stresses that regulate those populations"--Introd. Includes preface and abstracts in French. gccst Nature conservation gccst Amphibians gccst Environmental impact gccst Conferences Pettit, Karen E. Bishop, Christine Annette, 1960- Canada. Environment Canada. Canadian Wildlife Service. Occasional paper (Canadian Wildlife Service) no. 76 (CaOODSP)9.504780 PDF 10.07 MB https://publications.gc.ca/collections/collection_2018/eccc/CW69-1-76-eng.pdf