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A comparison of the influence of stratification by depth zone and by individual strata on research vessel abundance estimates / by C.A. Bishop. : Fs70-8/84-25E-PDF

"Stratification by depth zone and by individual strata were compared as to their effect on cod abundance estimates from research surveys in NAFO Subdiv. 3Ps. Stratification by depth zone was proposed as a means of providing population estimates for surveys where coverage was incomplete and when catches were highly variable. Combining strata within depth zones effectively increased the number of sets in the new strata and generally reduced the variances associated with the abundance estimates. Estimates of mean numbers per tow from both methods followed similar patterns."--Abstract

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.869622&sl=1

Renseignements sur la publication
Ministère/Organisme
  • Canada. Department of Fisheries and Oceans.
TitreA comparison of the influence of stratification by depth zone and by individual strata on research vessel abundance estimates / by C.A. Bishop.
Titre de la série
  • CAFSAC research document = CSCPCA document de recherche ; 84/25
Type de publicationMonographie - Voir l'enregistrement principal
Langue[Anglais]
FormatTexte numérique
Document électronique
Note(s)
  • Digitized edtion from print [produced by Department of Fisheries and Oceans].
  • "Not to be cited without permission of the authors."
  • Includes bibliographical reference (page 6).
  • Includes abstract in French.
Information sur la publication
  • St. John's, Newfoundland : Fisheries Research Branch, Department of Fisheries and Oceans,[1984]
Auteur / Contributeur
  • Bishop, Christine Annette, 1960- author.
Description1 online resource (19 pages) : illustrations.
Numéro de catalogue
  • Fs70-8/84-25E-PDF
Descripteurs
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