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Developing new approaches to global stock status assessment and fishery production potential of the seas










Rosenberg, A.A., Fogarty, M.J., Cooper, A.B., Dickey-Collas, M., Fulton, E.A., Gutiérrez, N.L.,Hyde, K.J.W., Kleisner, K.M., Kristiansen, T., Longo, C., Minte-Vera, C., Minto, C., Mosqueira, I., Chato Osio, G., Ovando, D., Selig, E.R., Thorson, J.T.& Ye, Y. 2014. Developing new approaches to global stock status assessment and fisheryproduction potential of the seas. FAO Fisheries and Aquaculture Circular No. 1086. Rome, FAO.175 pp.


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    The global fisheries sector in 2023 is now appreciably different compared to that of the 1970s, as are the dominant fish stocks that comprise most of the current global landings, their location and modes of their exploitation. The fisheries of South and Southeast Asia have also changed over this period and alongside their changing nature, there has been the continuous evolution of the tools and the requirements for calculating and presenting global sustainability information. This has transformed ability to assess fish stocks, use data-poor methodologies, assess multispecies fisheries and also take into account some of the complex interactions between target and non-target species and related ecosystem effects. The countries of the South and Southeast Asia region have not reported the status of stocks in a comprehensive manner to FAO and there is a need to understand how to access existing information and also build capacity to assess the fisheries of the region using appropriate tools. This review provides thematic papers on stock assessment approaches and their application to the region. The country analysis describes the data sources and assessment methods currently being applied in national fishery management areas and in smaller regions. The review contains recommendations on the needs for capacity building and how improved regional networking can provide support to the greater understanding and application of new or improved methods of stock assessment in the region.
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    Report of the Expert Consultation Workshop on the ''Development of methodologies for the global assessment of fish stock status''
    Rome, Italy, 4–6 February 2019
    2019
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    The FAO Expert Consultation Workshop on the “Development of methodologies for the global assessment of fish stock status” took place in Rome, Italy, from 4-6 February 2019. The overall objective of the workshop was to present to a group of experts in stock assessment, fishery management and policy development a new tool (now called sraplus) that can be used to assess the status of currently unassessed stocks. More in detail, participants were asked to i) review the technical design, soundness and practical applicability of the new methodology, ii) evaluate its performance with simulation data and real fisheries data, iii) discuss its advantages and disadvantages as well as any necessary adjustments, and iv) design a plan for steps forward towards its application in global fish stock assessment. The workshop participants contributed in their individual capacities to the discussions which resulted in a set of recommendations on how to improve the tool and the data that is provided to the assessments.
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    Global trends in status and management of assessed stocks: achieving sustainable fisheries through effective management 2020
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    This report provides an overview of the biological status of assessed stocks around the world and relates measures of stock status to the strength of fisheries management. Stock assessment outputs, consisting primarily of time series of abundance and fishing pressure relative to target reference points, were compiled for 548 marine fish and invertebrate stocks in the RAM Legacy Stock Assessment Database. Data summary methods included: global and regional mean trends of abundance and fishing pressure relative to target reference points; bivariate plots of relative abundance and fishing pressure; estimates of potential equilibrium yield foregone at current fishing pressure; and proportions of stocks in different biomass status categories. These measures of stock status were summarized at the global level as well as separated by 16 FAO Major Fishing Areas and ocean basin regions for comparison.

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