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045 |ax5x7
0861 |aFs97-4/1599E-PDF|zFs97-4/1599
1001 |aKetchen, K. S., |eauthor.
24510|aReconstruction of Pacific ocean perch (Sebastes alutus) stock history in Queen Charlotte Sound. |nPart II, |pCatch per unit of effort as a measure of abundance, 1959-79 / |cby K.S. Ketchen.
264 1|aNanaimo, British Columbia : |bDepartment of Fisheries and Oceans, Resource Services Branch, Pacific Biological Station, |cFebruary 1981.
264 4|c©1981
300 |a1 online resource (vi, 72 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. 1599
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 17-18).
5203 |a"Statistics of the Canadian fishery for Pacific ocean perch (Sebastes alutus) in Queen Charlotte Sound have been used to develop a new CPUE measure of relative abundance. This index is positively correlated with an earlier one based on the performance of a U.S. fishing fleet and is compatible with independent, provisional estimates of available biomass. A rapid decline in abundance occurred between 1965 and the early 1970s, a period of relatively heavy removals. By the late 1970s catch as well as total effort had reached its lowest point since the inception of fishing in the early 1950s. It is too soon to conclude that a modest reversal of the CPUE trend is a reflection of stock recovery. The new index of abundance has been applied to a range of estimates of total removals (required because of uncertainty about the reliability of reported foreign catch) to obtain a range of estimates of total fishing effort. These data are to be used in further stock assessment studies and reported in this publication series"--Abstract, page iii.
546 |aIncludes abstracts in English and French.
650 0|aPacific ocean perch fisheries|zBritish Columbia|zQueen Charlotte Sound.
650 0|aFisheries|xCatch effort|zBritish Columbia|zQueen Charlotte Sound.
650 0|aFish stock assessment|zBritish Columbia|zQueen Charlotte Sound.
650 6|aSébaste à longue mâchoire|xPêche commerciale|zColombie-Britannique|zReine-Charlotte, Bassin de la.
650 6|aPêches|xMortalité par pêche|zColombie-Britannique|zReine-Charlotte, Bassin de la.
650 6|aRessources halieutiques|xÉvaluation|zColombie-Britannique|zReine-Charlotte, Bassin de la.
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. 1599.|w(CaOODSP)9.505211
85640|qPDF|s913 KB|uhttps://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1599-eng.pdf