bay scallop fmp draft amendment 1 marine fisheries commission aug. 12, 2010 investigating adaptive...
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Bay Scallop FMPDraft Amendment 1
Marine Fisheries CommissionAug. 12, 2010
Investigating Adaptive Management of Bay Scallop Harvest Based on Measures
of Abundance
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Background• Bay scallop FMP finalized Nov 2007
• Prohibited take occurred from 2006 – 2008 as part of the FMP management strategy
• Data on scallop abundance from the fishery independent sampling are evaluated annually as directed by the FMP
• Sampling in Core, Bogue, and Back sounds began to show an increase in abundance beginning in 2008
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Target Re-opening Indicator• A standardized scallop population level
indicator was selected as a target for reopening the harvest season by the N. C. Marine Fisheries Commission at its January 2009 meeting
• This target was based on NCDMF sampling that occurred between the months of October and December in 1984 and 1985 for Back, Bogue, and Core sounds
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Annual Commercial Landings1950 to 2005
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Progressive Triggers• Allows flexibility in management
• Allows consideration of population variability in all areas each year
• Allows for limited bay scallop harvest while maintaining the FMP goal of rebuilding the stock to pre-red tide abundance levels
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Back Sound Sampling Target (1984-85 lnCPUE) and Progressive
Triggers for Adaptive Management
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Bogue Sound Sampling Target (1984-85 lnCPUE) and
Progressive Triggers for Adaptive Management
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Core Sound Sampling Target (1984-85 lnCPUE) and
Progressive Triggers for Adaptive Management
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Additional Items to Consider• Proclamation authority allows flexibility to
adjust seasons, trip limits or allowed gears based on current conditions
• 5-year review of the FMP in 2012
• Daily maximum allowed harvest is 20 bushels per person per day with a maximum of 40 bushels per day in any combined commercial fishing operation (15A NCAC 03K .0501)
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Additional Items to Consider• Recreational harvest limits are now set in
proclamation
• Separation of gears and user groups to particular days of the week for easier enforcement
• Increase in commercial fishing effort due to improved harvest and open license
• Number who harvest bay scallops for recreational purposes is unknown
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Management Options1. Status quo: Continue using only target
opening indicators, without progressive triggers for adaptive harvest
2. Consider adaptive management measures based on pre-determined progressive triggers for Core, Bogue, and Back sounds
3. Consider adaptive management measures for Pamlico Sound based on limited sampling with pre-determined progressive triggers
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Management Options
4. Use pre-determined target and progressive triggers from Bogue Sound for opening areas south of Bogue Sound until a sampling time series is developed for a starting target level from this region
5. Continue to leave areas south of Bogue Sound closed to bay scallop harvest but consider adaptive management measures once a sampling time series is established to determine a target opening level
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• No public comments were received during any of the open meetings
Overview of Public Meetings
• NCDMF received comments from a special meeting with Mr. Henry Frost, Mr. Joey Frost and Dr. Pete Peterson
Committee AC Initial DMF Initial Crafted Own
Northeast
Shellfish
H&WQ
Southeast
Central
Inland
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Other Items from Meetings• Use of dish detergent to improve visibility of
scallops to hand harvesters
• Study the impacts of hand harvest versus scallop dredge harvest on grass beds
• Change the definition of a scallop dredge to a scallop scrape
• Reinforce the need for a recreational shellfish license
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AC and NCDMF Recommendations
• Consider adaptive management measures in Bogue, Back, and Core sounds using progressive triggers of 50%, 75%, and 125% of the 1984-1985 target levels
• Consider adaptive management measures in Pamlico Sound using progressive triggers of 50%, 75%, and 125% of the January 2009 target level
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• Use adaptive management measures with progressive triggers from Bogue Sound as a proxy to open areas south of Bogue Sound until a sampling time series is established for an appropriate target in the areas south of Bogue Sound
AC and NCDMF Recommendations
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Recommended Commercial Harvest Levels for the Progressive Triggers
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Recommended Recreational Harvest Levels for the Progressive Triggers
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Research Recommendations• Expand the current bay scallop fishery
independent sampling to improve estimates of the population abundance and spawning condition of the stock
• Conduct research to study the impacts of scalloping activities on bay scallop habitat