Data-limited models for informing groundfish management Jason Cope E.J. Dick Alec MacCall Chantell Wetzel NWFSC SWFSC 10 June, 2014 Disclaimer: This information is distributed solely for the purpose of pre-dissemination peer review under applicable information quality guidelines. It has not been formally disseminated by NOAA Fisheries. It does not represent and should not be construed to represent any agency determination or policy.
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Data-limited models for informing management€¦ · Data-limited models for informing groundfish management . Jason Cope . E.J. Dick . Alec MacCall . Chantell Wetzel . NWFSC . SWFSC
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Data-limited models for informing groundfish
management Jason Cope
E.J. Dick Alec MacCall
Chantell Wetzel
NWFSC
SWFSC
10 June, 2014
Disclaimer: This information is distributed solely for the purpose of pre-dissemination peer review under applicable information quality guidelines. It has not been formally disseminated by NOAA Fisheries. It does not represent and should not be construed to represent any agency determination or policy.
Groundfish FMP (est. 1982)
U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 2
Elasmobranchs
Flatfishes
RockfishesRoundfishes
NearshoreShelf
Slope
90+ species Longevity: 5-200+ Fishery
• Lat. range: 32º-49º N • Multiple factors
• States • Sectors • Vessels • Gear types
• Data • Types • Quality • Quantity
Limitations to conducting stock assessments
U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 3
• #/diversity of stocks
• Data availability
• Large stock ranges
• Trained analysts
• Reviewers
• Council time
• Maintaining “current” assessments
• General funding
Stock category
Default OFL uncertainty
Affiliated assessment type Data types
1 σ=0.36 Statistical Catch
at Age
Catch, detailed life history, indices,
length/age comps.
2 σ=0.72 Index-based
methods Catch, basic life history,
abundance indices
3 σ=1.44 Catch-only Catch, basic life history
Informing catch limits
U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 4
Timeline and context
U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 5