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    Estimating by-catch from CCAMLR data

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    Numéro du document:
    WG-FSA-SAM-05/4
    Auteur(s):
    Secretariat
    Point(s) de l'ordre du jour
    Résumé

    Quantifying the catch rates and biomass of by-catch species on CCAMLR’s fishing grounds is an essential component of the assessment advice prepared by WG-FSA. However, such analyses are problematic because the CCAMLR datasets are incomplete and have a high occurrence of ‘missing catch values’.
    A method to treat ‘missing catch values’ using estimates derived from the mean weights of by-catch species by fishing gear, region and period is outlined. This method would improve the consistency of the CCAMLR datasets and allow quantitative analyses of by-catch to be based on the best, scientific data available.