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Northern California Red Abalone Fishery Ian Taniguchi Department of Fish and Game October 20, 2011 Management for the Future
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Presentation Summary Die-Off Event Update Impact and Implications for the Fishery Next Steps
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Invertebrate Die-Off Update Toxic Poisoning Further Tests Die-off Event is Over Gonyaulax spinifera
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Assessing the Impact Abalone –Fort Ross - 30% decline –Timber Cove – 19% decline –Salt Point - 12% decline –Ocean Cove – 35% decline Context of Event Mortality –Natural mortality: 10% to 21% per year
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Assessing the Impact
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Index Site Density Die-Off Event Overall Mean Abalone Density 2009-2011: 0.57 Abalone/m 2
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Abalone Fishery Implications ARMP trigger to reduce catch Regulatory package Additional regulations if needed
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Next Steps Complete Regulatory Package Additional Regulations (if needed) Begin Transition to Long Term Plan
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Ian Taniguchi California Department of Fish and Game Marine Region Invertebrate Management Project 4665 Lampson Ave. Suite C Los Alamitos, CA. 90720 Email: itaniguchi@dfg.ca.govitaniguchi@dfg.ca.gov http://www.dfg.ca.gov/marine/invertebrate/abalone.asp
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Proposed Regulatory Options Reduce card limit from 24 to no less than 12 Reduce daily fishing hours by early morning closure Site specific effort reduction Close Fort Ross the first 2 months of season No co-mingling of catches prior to tagging
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ARMP TAC Adjustment Table CRITERIA ACTION Recruitment Density (abalone/m 2 ) – emergent surveys Deep (refuge)All Depths N/A 0.33/m 2 AND 0.66/m 2 2) Maintain TAC 3) Reduce TAC by 25% No AND< 0.25/m 2 OR < 0.50/m 2 Densities (2008-10): Deep = 0.28/m 2 ; All Depths = 0.54/m 2
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Recruitment Densities 2008-2010 Site Total Abalone Density (all depths and sizes) Recruitment Density (ab/m 2 for abalone 4 in. to 7 in. length) Todds Point 2009/10 0.51 0.10 Caspar Cove 2008 0.43 0.11 Van Damme 20100.800.30 Point Arena 20100.810.22 Salt Point 20080.390.15 Ocean Cove 20100.620.23 Timber Cove 20090.430.09 Fort Ross 20090.330.10 Overall Average0.540.16
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Top Five Card Site Catch Estimates Site2007200820092010 Fort Ross62,00056,00051,00033,000 Van Damme16,000 19,00016,000 Moat Creek12,00014,00019,00011,000 Salt Point13,00011,00012,0009,000 Sea Ranch13,00010,00012,000 Total Catch309,000265,000295,000234,000 Site Densities: Ft. Ross = 0.33/m 2 ; Salt Point = 0.39/m 2
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