00000nam 2200000zi 4500 9.953412 CaOODSP 20251029071408 m o d f cr mn||||||||| 250721e198810##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x5x8 Fs97-4/1990E-PDF Fs97-4/1990E Haist, V., author. Stock assessments for British Columbia herring in 1987 and forecasts of the potential catch in 1988 / by V. Haist, J.F. Schweigert and D. Fournier. Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, October 1988. ©1988 1 online resource (ix, 63 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1990 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 34-35). "Herring stock abundance in British Columbia waters was assessed for 1987, and forecasts were made for 1988 using two analytical methods: (1) escapement model, and (2) age-structured model. Diving spawn survey data was utilized in the escapement model wherever available. Forecasts of pre-fishery biomass are obtained by weighting the estimates from the two models. The forecasts, are for 79,680 tonnes to the northern and 86,210 tonnes to the southern stock assessment regions. These estimates represent a slight decrease from 1987 levels, reflecting below average recruitments to all the southern areas during the last spawning run. The recommended 1988 catch (20% of the 1988 forecast herring run for stocks above CUTOFF levels) for the entire B.C. coast is 30,750 tonnes. All areas except the Queen Charlotte Islands should be available to the fishery in 1988"--Abstract, page iv. 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. Pacific herring fisheries British Columbia Pacific Coast Forecasting. 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. Hareng du Pacifique Pêche commerciale Colombie-Britannique Pacifique, Côte du Prévision. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 1990. (CaOODSP)9.505211 PDF 1.64 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1990-eng.pdf