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045 |ax8x8
0861 |aFs97-4/1661E-PDF|zFs97-4/1661
1001 |aThompson, J. M., |eauthor.
24510|aDistribution and abundance of Pacific hake and walleye pollock in the Strait of Georgia, March 24-May 2, 1981 / |cby J.M. Thompson and G.A. McFarlane.
264 1|aNanaimo, British Columbia : |bDepartment of Fisheries and Oceans, Resource Services Branch, Pacific Biological Station, |cMay 1982.
264 4|c©1982
300 |a1 online resource (iv, 79 pages) : |billustrations, maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian manuscript report of fisheries and aquatic sciences, |y0706-6473 ; |vno. 1661
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 9-10).
5203 |a"Swept-volume midwater trawl surveys were carried out in two areas of the Strait of Georgia during March 24-May 2, 1981, to determine the absolute abundance and distribution of Pacific hake (Merluccius productus) and walleye pollock (Theragra chalcogramma) during the spawning period. A total estimated biomass of 139,000 t and 85,000 t were present in Winchelsea Island-Sand Heads area during March 24-April 4 and April 22-May 2, respectively. Pacific hake accounted for 125,600 t and 84,400 t of the total biomass during these times. In the Active Pass-Point Roberts area a total estimated biomass of 12,700 t was present during April 9-12. Hake accounted for 4,400 t at this time. During all surveys, two distinct midwater layers were present throughout the study area. Hake, pollock, and spiny dogfish (Squalus acanthias) comprised nearly all catches made in these layers. Hake dominated, except in the Point Roberts area south of a line between Point Roberts and Mayne Island"--Abstract, page iii.
546 |aIncludes abstracts in English and French.
650 0|aPacific hake|zGeorgia, Strait of (B.C. and Wash.)
650 0|aWalleye pollock|zGeorgia, Strait of (B.C. and Wash.)
650 0|aPacific hake|zGeorgia, Strait of (B.C. and Wash.)|xGeographical distribution.
650 0|aWalleye pollock|zGeorgia, Strait of (B.C. and Wash.)|xGeographical distribution.
650 0|aFish populations|xEstimates|zGeorgia, Strait of (B.C. and Wash.)
650 0|aFish surveys|zGeorgia, Strait of (B.C. and Wash.)
650 6|aMerlu du Pacifique|zGéorgie, Détroit de (C.-B. et Wash.)
650 6|aGoberge de l'Alaska|zGéorgie, Détroit de (C.-B. et Wash.)
650 6|aMerlu du Pacifique|zGéorgie, Détroit de (C.-B. et Wash.)|xDistribution géographique.
650 6|aGoberge de l'Alaska|zGéorgie, Détroit de (C.-B. et Wash.)|xDistribution géographique.
650 6|aPoissons|xPopulations|xEstimation|zGéorgie, Détroit de (C.-B. et Wash.)
650 6|aInventaires ichtyologiques|zGéorgie, Détroit de (C.-B. et Wash.)
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
7102 |aPacific Biological Station (1972- ), |eissuing body.
830#0|aCanadian manuscript report of fisheries and aquatic sciences ;|vno. 1661.|w(CaOODSP)9.505211
85640|qPDF|s3.30 MB|uhttps://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1661-eng.pdf