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Instream indexing of coho salmon (Oncorhynchus kisutch) escapement in French Creek, British Columbia / by N.T. Johnston, J.R. Irvine, and C.J. Perrin. : Fs97-6/1573E-PDF

"We evaluated the utility of instream indexing for estimating coho escapements in a small river system for which there were independent estimates of escapement from fence counts and mark-recapture surveys. We compared three survey designs (simple random sampling, spawning ground sampling, and "index area" sampling), three sampling unit sizes (100, 200, and 400 m), and four methods of estimation (peak livecounts, peak live plus accumulated dead counts, total dead counts, and area-under-the-curve), using visual count data obtained by foot surveys. We also compared the counting efficiencies of different observers, and examined the relation between visual estimates of coho density and densities obtained by electrofishing. …"--Abstract, page iv.

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.950106&sl=1

Renseignements sur la publication
Ministère/Organisme
  • Canada. Department of Fisheries and Oceans, issuing body.
  • Canada. Department of Fisheries and Oceans. West Vancouver Laboratory, issuing body.
TitreInstream indexing of coho salmon (Oncorhynchus kisutch) escapement in French Creek, British Columbia / by N.T. Johnston, J.R. Irvine, and C.J. Perrin.
Titre de la série
  • Canadian technical report of fisheries and aquatic sciences, 0706-6457 ; no. 1573
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 25-27).
  • Includes abstracts in English and French.
Information sur la publication
  • West Vancouver, British Columbia : Department of Fisheries and Oceans, Fisheries Research Branch, West Vancouver Laboratory, June 1987.
  • ©1987
Auteur / Contributeur
  • Johnston, N. T., author.
Description1 online resource (vi, 37 pages) : illustrations, map.
Numéro de catalogue
  • Fs97-6/1573E-PDF
Descripteurs
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