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Key processes of the dynamics of métiers allocation

This result is a extension of the identification of fisheries (or metiers) made during WP1 (cf result 32226). The trends observed in metiers allocation over more than ten years were analysed in two case studies, the whole Danish fleet and the French offshore fleet in the North Atlantic. In both cases, trips were first allocated to a metier using multivariate analyses (PCA+HAC+MCA).

Then the vessels were subsequently yearly aggregated into vessel groups (referred to as fishing strategies in the French case), based on their activity in the different metiers during a calendar year, also using PCA and HAC methods. The temporal trends of both metiers and vessel groups were thus described in terms of level of effort and number of vessels.

Main results showed that all fleets were specialised in terms of gear used, but flexible in terms of fishing grounds and target species. Major strategically changes were observed during the last decade, and they could be qualitatively related to changes in stock abundance, regulations or market price.

Reported by

Danish Institute for Fisheries Research
Jgersborgvej 64-66
2800 Lyngby
Denmark
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