00000nam 2200000zi 4500 9.956920 CaOODSP 20251030145715 m o d f cr mn||||||||| 251030e199001##bccb ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x5x9 Fs97-4/2049E-PDF Fs97-4/2049E Fs97-4/2049 Haist, V., author. Stock assessments for British Columbia herring in 1989 and forecasts of the potential catch in 1990 / by V. Haist and J.F. Schweigert. Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, January 1990. ©1990 1 online resource (viii, 62 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 2049 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 43-44). "Herring stock abundance in British Columbia waters was assessed for 1989 and forecasts were made for 1990 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 pro-fishery biomass are obtained by weighting the estimates from the two models. The forecasts are for 104,900 tonnes to the northern and 100,700 tonnes to the southern stock assessment regions. These estimates represented a slight increase (3.3%) in the northern areas and a slight decrease (3.6%) in the southern areas. The recommended 1990 catch (20% of the 1990 forecast herring run) for the % entire B.C. coast is 41,120 tonnes. All areas should be available to the fishery in 1990"--Abstract, page vii. 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. 2049. (CaOODSP)9.505211 PDF 1.93 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-2049-eng.pdf