Summary of Major Changes There are no major changes to the stock assessment. EXECUTIVE SUMMARY Input Data
Incidental catch for sharks by species in the BSAI was updated for 2006 and 2007 with estimates provided by the NMFS Alaska Regional Office (AKRO- as of October 5, 2007). Bottom trawl survey biomass estimates were updated for the 2007 Eastern Bering Sea shelf. Assessment Methodology We recommend tha...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.152.8280 http://www.afsc.noaa.gov/refm/docs/2007/BSAIshark.pdf |
| Summary: | Incidental catch for sharks by species in the BSAI was updated for 2006 and 2007 with estimates provided by the NMFS Alaska Regional Office (AKRO- as of October 5, 2007). Bottom trawl survey biomass estimates were updated for the 2007 Eastern Bering Sea shelf. Assessment Methodology We recommend that sharks be placed in Tier 6 for ABC and OFL calculations. Last year both Tier 5 and Tier 6 computations were presented for BSAI sharks. The Tier 6 calculation was based on using 1997 – 2005 as the base period for incidental catches as an alternative to 1978 – 1995 period typically specified for Tier 6. The SSC recommended placement of sharks in Tier 6 with this alternative base period and fixing the final year at 2005. Thus the Tier 6 ABC and OFL remains identical to that presented last year. ABC and OFL Calculations ABC |
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