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California Groundfish Collective Fishery Bottom Trawl, Trap, Bottom Longline

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California Groundfish Collective Fishery Bottom Trawl, Trap, Bottom Longline Groundfish complex including: Chilipepper rockfish, Dover sole, English sole, Longspine thornyhead, Pacific sanddab, Petrale sole, Sablefish, Shortspine thornyhead Image ©Scandinavian Fishing Yearbook / www.scandfish.com California Groundfish Collective Fishery Bottom trawl, Trap, Bottom longline October 3, 2014 John Driscoll, Consulting researcher Disclaimer Seafood Watch® strives to ensure all our Seafood Reports and the recommendations contained therein are accurate and reflect the most up-to-date evidence available at time of publication. All our reports are peer- reviewed for accuracy and completeness by external scientists with expertise in ecology, fisheries science or aquaculture. Scientific review, however, does not constitute an endorsement of the Seafood Watch program or its recommendations on the part of the reviewing scientists. Seafood Watch is solely responsible for the conclusions reached in this report. We always welcome additional or updated data that can be used for the next revision. Seafood Watch and Seafood Reports are made possible through a grant from the David and Lucile Packard Foundation 2 About Seafood Watch® The Monterey Bay Aquarium Seafood Watch® program evaluates the ecological sustainability of wild- caught and farmed seafood commonly found in the North American marketplace. Seafood Watch defines sustainable seafood as originating from sources, whether wild-caught or farmed, which can maintain or increase production in the long-term without jeopardizing the structure or function of affected ecosystems. The program’s mission is to engage and empower consumers and businesses to purchase environmentally responsible seafood fished or farmed in ways that minimize their impact on the environment or are in a credible improvement project with the same goal. Each sustainability recommendation is supported by a seafood report. Each report synthesizes and analyzes the most current ecological, fisheries and ecosystem science on a species, then evaluates this information against the program’s Sustainability Criteria to arrive at a recommendation of “Best Choice,” “Good Alternative,” or “Avoid.” In producing the seafood reports, Seafood Watch utilizes research published in academic, peer-reviewed journals whenever possible. Other sources of information include government technical publications, fishery management plans and supporting documents, and other scientific reviews of ecological sustainability. Seafood Watch research analysts also communicate with ecologists, fisheries and aquaculture scientists, and members of industry and conservation organizations when evaluating fisheries and aquaculture practices. Capture fisheries and aquaculture practices are highly dynamic; as the scientific information on each species changes, Seafood Watch’s sustainability recommendations and the underlying seafood reports will be updated to reflect these changes. Both the detailed evaluation methodology and the scientific reports, are available on seafoodwatch.org. For more information about Seafood Watch and seafood reports, please contact the Seafood Watch program at Monterey Bay Aquarium by calling 1-877-229-9990 or visit online at seafoodwatch.org. Disclaimer Seafood Watch® strives to ensure all its seafood reports and the recommendations contained therein are accurate and reflect the most up-to-date evidence available at time of publication. All our reports are peer-reviewed for accuracy and completeness by external scientists with expertise in ecology, fisheries science or aquaculture. Scientific review, however, does not constitute an endorsement of the Seafood Watch program or its recommendations on the part of the reviewing scientists. Seafood Watch is solely responsible for the conclusions reached in this report. The program welcomes additional or updated data that can be used for the next revision. Seafood Watch and seafood reports are made possible through a grant from the David and Lucile Packard Foundation. 3 Guiding Principles Seafood Watch® defines sustainable seafood as originating from sources, whether fished1 or farmed, that can maintain or increase production in the long-term without jeopardizing the structure or function of affected ecosystems. The following guiding principles illustrate the qualities that capture fisheries must possess to be considered sustainable by the Seafood Watch program: • Stocks are healthy and abundant. • Fishing mortality does not threaten populations or impede the ecological role of any marine life. • The fishery minimizes bycatch. • The fishery is managed to sustain long-term productivity of all impacted species. • The fishery is conducted such that impacts on the seafloor are minimized and the ecological and functional roles of seafloor habitats are maintained. • Fishing activities should not seriously reduce ecosystem services provided by any fished species or result in harmful changes such as trophic cascades, phase shifts, or reduction of genetic diversity. Based on these guiding principles, Seafood Watch has developed a set of four sustainability criteria to evaluate capture fisheries for the purpose of developing a seafood recommendation for consumers and businesses. These criteria are: 1. Impacts on the species under assessment 2. Impacts on other species 3. Effectiveness of management 4. Habitat and ecosystem impacts Each criterion includes: • Factors to evaluate and score • Evaluation guidelines to synthesize these factors and to produce a numerical score • A resulting numerical score and rating for that criterion Once a score and rating has been assigned to each criterion, an overall seafood recommendation is developed on additional evaluation guidelines. Criteria ratings and the overall recommendation are color-coded to correspond to the categories on the Seafood Watch pocket guide: 1 “Fish” is used throughout this document to refer to finfish, shellfish and other invertebrates. 4 Best Choice/Green: Are well managed and caught or farmed in ways that cause little harm to habitats or other wildlife. Good Alternative/Yellow: Buy, but be aware there are concerns with how they’re caught or farmed. Avoid/Red: Take a pass on these for now. These items are overfished or caught or farmed in ways that harm other marine life or the environment. 5 Summary The subject of this analysis is the California Groundfish Collective (CGC) fishery, and the main species caught in this fishery. Recommendations are generated for eight of the primary commercial species that are targeted and caught in this fishery. The use of additional gears to pursue sablefish results in a total of 10 species/gear combinations assessed in this report. Six of the eight species assessed under Criterion 1 received a score of “green.” The two species to receive a “yellow” ranking were petrale sole and sablefish. In general, the eight species assessed under Criterion 1 were characterized by low to very low concerns regarding stock status and fishing mortality. Of the 10 stocks assessed under Criterion 2, 6 received “green” scores and 4 received “yellow” scores; none of the 2011 or 2012 CGC fishery’s major species received a “red” ranking. The two lowest-scoring Criterion 2 species were bank rockfish and blackgill rockfish. The relatively low bank rockfish score was driven by a lack of species-specific information regarding current stock status and the appropriateness of current levels of fishing mortality, while the relatively low blackgill rockfish score was driven by concerns regarding current levels of coastwide fishing mortality, as well as concerns regarding a substantial increase in blackgill rockfish catch in the 2012 CGC fishery relative to the 2011 fishery. The remaining “yellow” species are all overfished or rebuilding species for which fishing mortality is a “very low” conservation concern. The management of the CGC fishery’s retained and bycatch species is strong, because it is generally characterized by access to up-to-date stock assessments, the use of biomass reference points and associated harvest control rules to determine harvest levels, 100% at-sea observer coverage, and enhanced management measures developed by the fishery's participants. Groundfish fishing gears tend to contact the seafloor, and the gears used in the CGC fishery are no exception. The four gears that are used in this fishery include bottom longline, pot, bottom trawl, and Scottish seine (data for the latter are incorporated into the data for the bottom trawl component of the fishery). After review of GIS data for fishing intensity on different habitats, as well as GIS data for the protection of those habitats from these gears, the bottom trawl component of the CGC fishery received a score of “high concern” for Factor 4.1 (except for Dover sole, thornyheads, and sablefish, which were scored “moderate”). The trawl fishery received a score of “strong mitigation” for Factor 4.2. Conversely, the fixed-gear component received a Factor 4.1 score of “moderate concern,” due to the use of fixed gears on deep boulder habitat, and a score of “moderate mitigation” for Factor 4.2, due to relatively low protection of deep boulder habitat. In summary, all 10 species/gear combinations assessed in this report receive overall “green” recommendations. In general, the CGC fishery is characterized by strong management, stock assessments that are generally up to date, and a wealth of fishery-specific information for the fishery's 6 interactions with habitat. Concerns include the stock status and fishing mortality of sablefish, and the mortality
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