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Common model diagnostics for fish stock assessments in the United States
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2022
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[PDF-1.04 MB]
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Description:Fishery stock assessments are mathematical models that estimate the current status of a fish stock and are the foundation of sustainable fisheries management. Stock assessments typically rely on a number of data types to estimate key biological processes, the effects of fishing activity, and, in some cases, the influence of environmental conditions on the past and current stock status. Each stock assessment is unique and there is no objective criterion that simultaneously summarizes the results of an assessment, determines if the model fits the data adequately, and evaluates whether the model is well-specified. As a result, stock assessment analysts rely on a suite of model diagnostics to ultimately arrive at a single base model (or in some cases a suite of base models termed an ensemble of models) to inform management decisions for a specific fish stock.
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Rights Information:CC0 Public Domain
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Compliance:Submitted
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