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Hook and line survey of lingcod (Ophiodon elongatus) and rockfish (Sebastes spp.) in southern Strait of Georgia (statistical areas 18 and 19) June 19-29, 2005 Preview this item
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Hook and line survey of lingcod (Ophiodon elongatus) and rockfish (Sebastes spp.) in southern Strait of Georgia (statistical areas 18 and 19) June 19-29, 2005

Author: D R Haggarty; J R King; Pacific Biological Station (1972-)
Publisher: Nanaimo, B.C. : Fisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station, 2006.
Series: Canadian technical report of fisheries and aquatic sciences, no. 2623.
Edition/Format:   eBook : Document : National government publication : EnglishView all editions and formats
Database:WorldCat
Summary:
Research fishing methods using hook and line gear were conducted in the 1980's and early 1990's to assess near shore reef fish abundance in the Strait of Georgia. These surveys were reinstated in 2003 to assess lingcod and rockfish abundance. This survey was conducted in Statistical Area (SA) 18 and 19 between June 19-29,2005. We compare the lingcod catch rates in SA 18 and 19 to catch data collected in the summer  Read more...
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Details

Material Type: Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: D R Haggarty; J R King; Pacific Biological Station (1972-)
OCLC Number: 182522765
Language Note: Summary in French.
Description: 1 online resource (vii, 44 pages) : illustrations, maps.
Series Title: Canadian technical report of fisheries and aquatic sciences, no. 2623.
Responsibility: by D.R. Haggarty and J.R. King.

Abstract:

Research fishing methods using hook and line gear were conducted in the 1980's and early 1990's to assess near shore reef fish abundance in the Strait of Georgia. These surveys were reinstated in 2003 to assess lingcod and rockfish abundance. This survey was conducted in Statistical Area (SA) 18 and 19 between June 19-29,2005. We compare the lingcod catch rates in SA 18 and 19 to catch data collected in the summer of 2004 in SA 13 through 17 to investigate spatial patterns in the relative abundance of lingcod in the Strait of Georgia. Despite high lingcod catch rates in SA 19 in the Strait of Georgia Creel Survey, lingcod research catch rates were higher in the northern Strait of Georgia, particularly SA 13, than in SA 18 or 19. Smaller lingcod were caught in the south than in the northern Strait of Georgia. Higher lingcod catch rates were, however, apparent at the southernmost sites in SA 19. We also compare our lingcod and rockfish catch per unit of effort (CPUE) data to historical CPUE from 1993. Lingcod catch rates in SA 18 and 19 are significantly greater in 2005 than in 1993 in the shallow depth stratum, but not in the deep. Copper and quillback rockfish catch rates are significantly lower in 2005 than in 1993 in both depth strata. This survey highlights the importance of fishery independent surveys.

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