Stock assessments for British Columbia herring in 1988 and forecasts of the potential catch in 1989 / by V. Haist and J.F. Schweigert. : Fs97-4/2028E-PDF

"Herring stock abundance in British Columbia waters was assessed for 1988 and forecasts were made for 1989 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 101,600 tonnes to the northern and 104,500 tonnes to the southern stock assessment regions. These estimates represent significant increases from 1988 levels, reflecting average to good recruitments to all areas during the last spawning run. The recommended 1989 catch (20% of the 1989 forecast herring run) for the entire B.C. coast is 41,200 tonnes. All areas should be available to the fishery in 1989"--Abstract, page iv.

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