00000nam 2200000zi 4500 9.951651 CaOODSP 20250714140116 m o d f cr mn||||||||| 250530e198411##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x8x8 Fs97-4/1795E-PDF Fs97-4/1795E Schweigert, J. F., author. Herring stock estimates from diving surveys of spawn for the north coast of British Columbia in 1982 / by J.F. Schweigert and C.W. Haegele. Nanaimo, British Columbia : Department of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station, November 1984. ©1984 1 online resource (iii, 43 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1795 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 6-7). "Divers surveyed and sampled major 1982 herring spawns in Statistical Areas 3 to 5. Spawner biomass was estimated at 5700 tonnes, which agreed closely with prespawning echosounder estimates, but was considerably lower than the 19,500 to 29,000 tonnes estimated with population models. The low estimated spawner biomass supports the decision to close the sac-roe fishery in Chatham Sound from 1979 through 1983 and in Porcher Island from 1982 through 1983"--Abstract, page iii. Includes abstracts in English and French. Pacific herring British Columbia Pacific Coast. Pacific herring Eggs British Columbia Pacific Coast. Fish populations Estimates British Columbia Pacific Coast. Hareng du Pacifique Colombie-Britannique Pacifique, Côte du. Hareng du Pacifique Œufs Colombie-Britannique Pacifique, Côte du. Poissons Populations Estimation Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 1795. (CaOODSP)9.505211 PDF 1.00 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1795-eng.pdf