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Stock assessments for British Columbia herring in 1989 and forecasts of the potential catch in 1990 / by V. Haist and J.F. Schweigert. : Fs97-4/2049E-PDF

"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.

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.956920&sl=1

Renseignements sur la publication
Ministère/Organisme
  • Canada. Department of Fisheries and Oceans, issuing body.
  • Pacific Biological Station (1972- ), issuing body.
TitreStock assessments for British Columbia herring in 1989 and forecasts of the potential catch in 1990 / by V. Haist and J.F. Schweigert.
Titre de la série
  • Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 2049
Type de publicationMonographie - Voir l'enregistrement principal
Langue[Anglais]
FormatTexte numérique
Document électronique
Note(s)
  • Digitized edition from print [produced by Department of Fisheries and Oceans].
  • Includes bibliographical references (pages 43-44).
  • Includes abstracts in English and French.
Information sur la publication
  • Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, January 1990.
  • ©1990
Auteur / Contributeur
  • Haist, V., author.
Description1 online resource (viii, 62 pages) : maps.
Numéro de catalogue
  • Fs97-4/2049E-PDF
Descripteurs
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