00000000nam 2200000zi 4500
0019.949868
003CaOODSP
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006m     o  d f      
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008250408t19961996bccab   ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc|apn-----
045 |ax5x9
0861 |aFs97-6/2098E-PDF|zFs97-6/2098E
1001 |aSchweigert, J. F., |eauthor.
24510|aStock assessment for British Columbia herring in 1995 and forecasts of the potential catch in 1996 / |cby J.F. Schweigert, C. Fort and L. Hamer.
264 1|aNanaimo, British Columbia : |bDepartment of Fisheries and Oceans, Science Branch, Pacific Region, Pacific Biological Station, |c1996.
264 4|c©1996
300 |a1 online resource (vii, 66 pages) : |billustrations, map.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian technical report of fisheries and aquatic sciences, |x0706-6457 ; |v2098
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 39-40).
5203 |a"Herring stock abundance in British Columbia waters was assessed for 1995 and forecasts were made for 1996 using two analytical methods: (1) escapement model; and (2) age-structured model. Coastwide, the estimated pre-fishery stock biomass for all assessment regions in 1995 was 145,730 tonnes which represents a 16% decrease from 1994 abundance levels. This decline reflects the recruitment of a below average 1992 year-class in 1995 in most assessment areas except the Prince Rupert District where recruitment was average. Forecasts of the pre-fishery spawning stock biomass in 1996 are obtained by weighting the estimates from the two analytical models. Stock forecasts for the northern stock assessment regions are 55,830 and 91,470 tonnes for the southern regions assuming average recruitment to all areas. The recommended 1996 catch (20% of the 1996 forecast herring run) is 29,460 tonnes for the entire B.C. coast assuming average recruitment to all areas. Stock levels in the Queen Charlotte Islands and the west coast of Vancouver Island have continued to decline and available harvestable surpluses may be modified following the PSARC review of these data"--Abstract, page vi.
546 |aIncludes abstracts in English and French.
650 0|aPacific herring|zBritish Columbia|zPacific Coast.
650 0|aPacific herring fisheries|zBritish Columbia|zPacific Coast.
650 0|aFish stock assessment|zBritish Columbia|zPacific Coast.
650 6|aHareng du Pacifique|zColombie-Britannique|zPacifique, Côte du.
650 6|aHareng du Pacifique|xPêche commerciale|zColombie-Britannique|zPacifique, Côte du.
650 6|aRessources halieutiques|xÉvaluation|zColombie-Britannique|zPacifique, Côte du.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
7102 |aPacific Biological Station (1972- ), |eissuing body.
830#0|aCanadian technical report of fisheries and aquatic sciences ;|v2098.|w(CaOODSP)9.504449
85640|qPDF|s1.19 MB|uhttps://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-6/Fs97-6-2098-eng.pdf