Research Document - 2004/068

Stock assessment framework for Inshore Rockfish

By Yamanaka, K.L., Lacko, L,C., Lochead, J.,
Martin, J.M., Haigh, R., Grandin, C., West, K.

Abstract

This working paper is prepared in response to a management request to provide a detailed outline of scientific monitoring and assessment programs required to improve the ability to assess the status of inshore rockfish populations and monitor changes in abundance. This working paper provides a brief background section on biology, fishery management and historic fishery dependent abundance indices for inshore rockfish in B.C., then reviews survey methods and design, trends in relative abundance, biological population parameters and considers these in making recommendations for future surveys.

The surveys are grouped into

1. historic research survey programs
   • hook and line jig surveys primarily in Statistical Area 12 - 19
   • submersible surveys in Statistical Area 15 and 16
   • longline surveys with industry on the west coast Queen Charlotte Islands and the west coast of Vancouver Island.
2. new research survey programs aimed at developing fishery independent abundanceindices
   • observer on the IPHC setline survey
   • longline survey in Statistical Areas 12 and 13
   • towed camera survey in Statistical Areas 17-19
3. research to develop methods of estimating biomass
   • Bowie Seamount and Gwaii Haanas
   • lower Strait of Georgia
   • genetic tagging in Trincomali Channel

Discussion of research program priority may be developed in concert with the fisheries management framework. Encompassing management goals into a management framework would help to identify specific priorities for monitoring and research programs.

Complete document (PDF, 1635 KB)

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