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Assessment of the Pacific Sardine Resource in 2019 for U.S. Management in 2019-20
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2019
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[PDF-4.26 MB]
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Description:The following Pacific sardine assessment update was conducted to inform U.S. fishery management for the cycle that begins July 1, 2019 and ends June 30, 2020. Two assessment approaches were reviewed at the STAR Panel in February 2017: an AT survey-based approach (preferred by the STAT); and a model-based assessment (model ALT). Given forecasting issues highlighted in the review (see STAR 2017 and ‘Unresolved Problems and Major Uncertainties’ below), the Panel ultimately recommended that management advice be based on model ALT for the 2017-18 fishing year. The following update of model ALT represents the update base model from the April 2018 update (Hill et al. 2018) with the addition of updated/new landings (2017-18), a revised AT biomass estimate for summer 2017, and one new AT-based biomass estimate and age composition from the SWFSC’s summer 2017 survey. Finally, one additional recruitment deviation was estimated for the 2018 year-class.
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Rights Information:Public Domain
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Compliance:Submitted
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