00000nam 2200000zi 4500 9.874300 CaOODSP 20221107164144 m o d f cr ||||||||||| 190605s1982 nsca|||#ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-ns Fs70-8/82-44E-PDF Shotton, Ross, author. Results of acoustic surveys of the southwest Nova Scotia (NAFO Division 4WX) herring stock during February and July, 1981 / by R. Shotton and R.G. Randall. Dartmouth, N.S. : Canadian Atlantic Fisheries Scientific Advisory Committee, [Department of Fisheries and Oceans], [1982]. 1 online resource (29 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; 82/44 Digitized edtion from print [produced by Department of Fisheries and Oceans]. "Not to be cited without permission of the authors." Includes bibliographical references (page 12). "Acoustic surveys of the 4WX herring stocks during winter and summer, 1981, obtained stock size estimates of 408 000 t and 201 000 t, respectively. Sampling error and unavailability of the stock to survey. during the summer period meant that there is a large amount of uncertainty In these estimates. Despite this, many of the problems associated with these surveys appear tractable and the continuation of these surveys should provide cost-effective estimates of the abundance of this herring stock." Includes abstract in French. gccst Fisheries gccst Salt water fish Randall, Robert George, author. Canada. Department of Fisheries and Oceans. Canadian Atlantic Fisheries Scientific Advisory Committee. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 82/44 (CaOODSP)9.869616 PDF 1.32 MB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-82-44-eng.pdf