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    Proposed revision to the estimation of fisheries footprints

    Request Meeting Document
    Document Number:
    WG-FSA-2019/67
    Author(s):
    CCAMLR Secretariat
    Submitted By:
    Dr Stéphane Thanassekos (CCAMLR Secretariat)
    Approved By:
    Ms Doro Forck (CCAMLR Secretariat)
    Abstract

    A revised approach to the estimation of longline fisheries footprints is presented. The method uses a data-derived estimate of the uncertainty around the locations of longlines to define a buffer around these lines. Within a georeferenced framework, buffered lines are then matched to a 10km grid. The proportion of the area of each grid cell that is covered by buffered lines is then used as a footprint index.