00000nam 2200000zi 4500 9.950202 CaOODSP 20250530145230 m o d f cr mn||||||||| 250415e198003##bccab obs f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x4x7 Fs97-4/1563E-PDF Fs97-4/1563 Westrheim, S. J., author. The trawl fishery in the Strait of Georgia and vicinity, 1945-77 / by S.J. Westrheim. Nanaimo, British Columbia : Department of Fisheries and Oceans, Resource Services Branch, Pacific Biological Station, March 1980. ©1980 1 online resource (iv, 130 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1563 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 24-26). "The 1945-77 trawl fishery in Georgia Strait and vicinity (Area 4B) was reviewed with respect to landing statistics, current regulations, and stock assessment of important species in Regulated Areas. All-species landings exhibited no trend during 1961-77, while fishing effort declined. Landings-per-hour-trawled (LPUE) increased after 1970, but remained substantially smaller than LPUEs from offshore grounds. Effects, if any, of the mesh regulation imposed in 1962 were obscured by the declining fishing effort and the declining landings of species which would allegedly benefit. Pacific cod (Gadus macrocephalus) is the single most important species (>50% of annual landings), and overall abundance exhibited no overall trend. Among areas, contrasting trends counterbalanced one another. English sole (Parophrys vetulus) abundance declined after the mid-1960s, even in areas where severe regulations were in effect since 1947. Lingcod (Ophiodon elongatus) abundance also declined substantially, based on landings of line-caught fish. Trawl landings exhibited no trend, but were a negligible portion of total lingcod landings"--Abstract, page iii. Includes abstracts in English and French. Trawls and trawling Georgia, Strait of (B.C. and Wash.) Statistics. Fishery law and legislation Georgia, Strait of (B.C. and Wash.) Fish stock assessment Georgia, Strait of (B.C. and Wash.) Chalutage Géorgie, Détroit de (C.-B. et Wash.) Statistiques. Pêches Droit Géorgie, Détroit de (C.-B. et Wash.) Ressources halieutiques Évaluation Géorgie, Détroit de (C.-B. et Wash.) Statistics lcgft Statistiques rvmgf Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 1563. (CaOODSP)9.505211 PDF 4.95 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1563-eng.pdf