00000cam 2200000zi 4500 9.886260 CaOODSP 20251205084901 m o d f cr ||||||||||| 200423t20202020oncda ob f10| 0 eng d 9780660347455 CaOODSP eng rda CaOODSP eng fre n-cn-bc Fs97-6/3371E-PDF Towers, Jared R., author. Photo-identification catalogue and status of the northern resident killer whale population in 2019 / by Jared R. Towers, James F. Pilkington, Brian Gisborne, Brianna M. Wright, Graeme M. Ellis, John K. B. Ford, and Thomas Doniol-Valcroze. [Ottawa] : Fisheries and Oceans Canada, 2020. ©2020 1 online resource (iv, 69 pages) : charts, photographs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3371 The copy has been replaced on July 6, 2020 as requested by the issuing department. Includes bibliographical references (pages 6-10). "Censuses of the northern resident killer whale population using photo-identification have been conducted annually since 1973. These studies are based on photographic recapture of permanent natural markings on every individual within the population. In this report, we summarize northern resident killer whale population trends over the time series of this study and provide a photo-identification catalogue of all individuals considered to be alive in 2019. This population has grown at a mean annual rate of 2.2% since 1973 and in 2019 contained a minimum of 310 individuals. Continued annual photo-identification censusing is a key strategy to accurately document the abundance, genealogy, sociality, demographics, and health of this threatened population"--Abstract. Includes abstract in French. Killer whale Photographic identification British Columbia Pacific Coast. Killer whale Monitoring British Columbia Pacific Coast. Whale populations British Columbia Pacific Coast. Orque Photo-identification Colombie-Britannique Pacifique, Côte du. Orque Surveillance Colombie-Britannique Pacifique, Côte du. Baleines Populations Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3371. (CaOODSP)9.504449 PDF 56.44 MB https://publications.gc.ca/collections/collection_2020/mpo-dfo/Fs97-6-3371-eng.pdf