00000nam 2200000zi 4500 9.879706 CaOODSP 20221107165603 m o d f cr |n||||||||| 190925s1979 nscd ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- Fs70-8/79-38E-PDF Gray, David F., author. Eastern Canadian grey seal : 1978 research report and stock assessment / D. F. Gray and B. Beck. Dartmouth, N. S. : Marine Fish Division, Resource Branch, Bedford Institute of Oceanography, [1979] 1 online resource (22 pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; 79/38 "Not to be cited without authors' permission." Includes bibliographical references (page 8). "This document reviews the research on grey seals conducted in 1978 and presents a new assessment of the eastern Canadian population. The revised assessment is based on the results of two years of complete cohort tagging on Sable Island (see Figure 1) and a revised natural mortality rate as developed in Harwood and Prime (1978). The latter rate is about two-thirds of the value used in the 1977 assessment (Gray 1977) and the subsequent virtual population analyses seem to better reflect what is known about the population. Though the analyses give reasonable estimates of the order of magnitude of the population, there are still wide ranges for the estimated numbers. Research in the next few years will be aimed at narrowing these ranges"--Introduction. gccst Seals gccst Animal populations Beck, B., author. Canada. Department of Fisheries and Oceans. Canada. Dept. of Fisheries and Oceans. Scotia-Fundy Region. Marine Fish Division. Bedford Institute of Oceanography. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 79/38 (CaOODSP)9.869616 PDF 936 KB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-79-38-eng.pdf