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Herring stock estimates from diving surveys of spawn and related studies in Lambert Channel in 1983 / by C.W. Haegele and J.F. Schweigert. : Fs97-4/1850E-PDF

"Diving surveys of herring spawn were made in Lambert Channel between March 1 and 21, 1983. Spawn samples collected on transects and survey data on spawn length and width were used to estimate egg numbers. The number of eggs estimated corresponds to 4331 t of spawners in Lambert Channel in 1983. Spawn was deposited along 10.8 km of shoreline on Denman Island and 7.4 km on Hornby Island with spawn heaviest near the centre of the spawns and near the middle of the depth range. A further 79 t were estimated to have died and sunk to the bottom over the 4.8 km² area fished by gillnets. Estimates of egg loss to bird predation did not exceed 5% of total spawn"--Abstract, page iii.

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.952708&sl=1

Renseignements sur la publication
Ministère/Organisme
  • Canada. Department of Fisheries and Oceans, issuing body.
  • Pacific Biological Station (1972- ), issuing body.
TitreHerring stock estimates from diving surveys of spawn and related studies in Lambert Channel in 1983 / by C.W. Haegele and J.F. Schweigert.
Titre de la série
  • Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1850
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 (page 5).
  • Includes abstracts in English and French.
Information sur la publication
  • Nanaimo, British Columbia : Department of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station, November 1985.
  • ©1985
Auteur / Contributeur
  • Haegele, C. W., author.
Description1 online resource (iii, 37 pages) : illustrations, maps.
Numéro de catalogue
  • Fs97-4/1850E-PDF
Descripteurs
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