00000nam 2200000za 4500 9.842587 CaOODSP 20221107152344 cr ||||||||||| 170829s2017 oncbd ob f000 0 eng d CaOODSP eng eng fre n-cn--- n-cn-bc Fs70-5/2017-007E-PDF Assessing the risk of lethal ship strikes to humpback (Megaptera novaeangliae) and fin (Balaenoptera physalus) whales off the west coast of Vancouver Island, Canada [electronic resource] / Linda M. Nichol ... [et al.]. Ottawa : Canadian Science Advisory Secretariat, 2017. vii, 33 p. : charts, col. maps Canadian Science Advisory Secretariat (CSAS), research document, 1919-5044 ; 2017/007, Pacific Region Cover title. “July 2017.” Includes bibliographical references (p. 22). “Vessel strikes are a source of mortality and injury for baleen whales that can have population-level impacts. Spatial analysis of whale distributions and marine traffic provide a valuable approach for identifying zones of high relative collision risk. We conducted 34 systematic aerial surveys (2012-2015) in fall and winter to estimate humpback and fin whale densities off the west coast of Vancouver Island, Canada. This region includes approaches to major shipping lanes in Juan de Fuca Strait, a gateway to the ports of southern British Columbia and Puget Sound, Washington. Our study is the first to assess ship strike risk to large whales off the west coast of Vancouver Island. The estimates of strike probability and risk of lethal strike we present here are minimum estimates, as our models did not account for species specific vulnerabilities and future projections did not account for whale population growth or anticipated increases in ship size"--Abstract, p. v. Includes abstract in French. gccst Whales gccst Ships gccst Risk management Nichol, Linda M. (Linda Marie), 1962- Canada. Department of Fisheries and Oceans. Canadian Science Advisory Secretariat. Research document (Canadian Science Advisory Secretariat) 1919-5044 ; 2017/007, Pacific Region (CaOODSP)9.507396 PDF 2.13 MB https://publications.gc.ca/collections/collection_2017/mpo-dfo/Fs70-5-2017-007-eng.pdf