00000nam 2200000zi 4500 9.949868 CaOODSP 20250408090700 m o d f cr mn||||||||| 250408t19961996bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x5x9 Fs97-6/2098E-PDF Fs97-6/2098E Schweigert, J. F., author. Stock assessment for British Columbia herring in 1995 and forecasts of the potential catch in 1996 / by J.F. Schweigert, C. Fort and L. Hamer. Nanaimo, British Columbia : Department of Fisheries and Oceans, Science Branch, Pacific Region, Pacific Biological Station, 1996. ©1996 1 online resource (vii, 66 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 0706-6457 ; 2098 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 39-40). "Herring stock abundance in British Columbia waters was assessed for 1995 and forecasts were made for 1996 using two analytical methods: (1) escapement model; and (2) age-structured model. Coastwide, the estimated pre-fishery stock biomass for all assessment regions in 1995 was 145,730 tonnes which represents a 16% decrease from 1994 abundance levels. This decline reflects the recruitment of a below average 1992 year-class in 1995 in most assessment areas except the Prince Rupert District where recruitment was average. Forecasts of the pre-fishery spawning stock biomass in 1996 are obtained by weighting the estimates from the two analytical models. Stock forecasts for the northern stock assessment regions are 55,830 and 91,470 tonnes for the southern regions assuming average recruitment to all areas. The recommended 1996 catch (20% of the 1996 forecast herring run) is 29,460 tonnes for the entire B.C. coast assuming average recruitment to all areas. Stock levels in the Queen Charlotte Islands and the west coast of Vancouver Island have continued to decline and available harvestable surpluses may be modified following the PSARC review of these data"--Abstract, page vi. Includes abstracts in English and French. Pacific herring British Columbia Pacific Coast. Pacific herring fisheries British Columbia Pacific Coast. Fish stock assessment British Columbia Pacific Coast. Hareng du Pacifique Colombie-Britannique Pacifique, Côte du. Hareng du Pacifique Pêche commerciale Colombie-Britannique Pacifique, Côte du. Ressources halieutiques Évaluation Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian technical report of fisheries and aquatic sciences ; 2098. (CaOODSP)9.504449 PDF 1.19 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-6/Fs97-6-2098-eng.pdf