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Swiftsure and Amphitrite Banks juvenile salmon survey, September 25-29, October 9-13, November 16-18 and November 23-25, 1987 / by N.H. Olsen, J.F.T. Morris, and M.C. Healey.: Fs97-6/1615E-PDF

"Aggregations of juvenile chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon are known to exist over Swiftsure and other banks, which lie on the continental shelf off southwest Vancouver Island. These aggregations are hypothesized to form in response to eddies caused by tidal current rectification. In the spring and fall, respectively, the summer and winter circulation over the continental shelf undergo a transition phase during which eddying and other stable components of shelf circulation break down. We hypothesize that these events cause the dispersal and redistribution of juvenile salmon aggregations. Employing commercial trolling methods, we conducted exploratory surveys on Swiftsure and Amphitrite Banks in September, October, and November of 1987 to obtain data on juvenile abundance, distribution, and size and species compositions before and during the fall transition. This report summarizes the information obtained"--Abstract, page iii.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.950112&sl=0

Publication information
Department/Agency
  • Canada. Department of Fisheries and Oceans, issuing body.
  • Pacific Biological Station (1972- ), issuing body.
TitleSwiftsure and Amphitrite Banks juvenile salmon survey, September 25-29, October 9-13, November 16-18 and November 23-25, 1987 / by N.H. Olsen, J.F.T. Morris, and M.C. Healey.
Series title
  • Canadian technical report of fisheries and aquatic sciences, 0706-6457 ; no. 1615
Publication typeMonograph - View Master Record
Language[English]
FormatDigital text
Electronic document
Note(s)
  • Digitized edition from print [produced by Department of Fisheries and Oceans].
  • Includes bibliographical references (page 6).
  • Includes abstracts in English and French.
Publishing information
  • Nanaimo, British Columbia : Department of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station, April 1988.
  • ©1988
Author / Contributor
  • Olsen, N. H., author.
Description1 online resource (iv, 25 pages) : maps.
Catalogue number
  • Fs97-6/1615E-PDF
Subject terms
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