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Proposed revision to the estimation of fisheries footprints

Demander un document de réunion
Numéro du document:
WG-FSA-2019/67
Auteur(s):
CCAMLR Secretariat
Soumis par:
Stephane Thanassekos (Secrétariat de la CCAMLR)
Approuvé par:
Doro Forck (Secrétariat de la CCAMLR)
Résumé

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.