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Approche de la dynamique de stocks accessoires ArchiMer
Moguedet, Philippe.
For a few years now, the landings from the Lorient's industrial fleet have been continually increasing (32,000 tons in 1980, 56,000 tons in 1985). This fleet practices a multispecific exploitation of the international fishery of the west and north of Scotland. The rock salmon (Pollachius virens) is the fleets' target species, its catches of other gadidae are considered secondary. Two of the catches, those of the blue ling (Molva dypterygia) and the ling (Molva molva) have been advancing since the beginning of the decade and in 1985 represented 21% of the total amount in quantity and value landed by the industrial fleet. The objective of this study is to asses the status of these ling resources and examine whether their exploitation can, in the short term,...
Tipo: Text Palavras-chave: Stock dynamics; By catch; Ling; Molva spp; Industrial fleet; Lorient; Brittany; Gadidés; Biologie; Dynamique des stocks; Flottilles industrielles; Lorient; Bretagne; Molva spp; Lingue; Stock accessoire.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/1988/these-2310.pdf
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Etude bio-économique de l'exploitation des ressources sous diverses hypothèses de gestion ArchiMer
Biseau, Alain; Ould El Kettab, Mustapha.
The model developed is a multi-species, multi-fleet and multi-sector model that consists of a dynamic allocation of the fishing effort. It can therefore measure the amplitude of the effort's generated outputs by strict, implemented and honoured regulatory measures. The management measures likely to be simulated give an account of the main trends of the regulations in effect in Community waters. Their effects on both the resource and the fleets are evaluated. Each stock, confined or not to a sector, has its own dynamic described by a model structured by ages: recruitment is assumed to be constant. Biological interactions (intra- and inter-species contact) as well as the problems of exchanges between sectors are not taken into account. In order to treat the...
Tipo: Text Palavras-chave: Dynamique des stocks; Eaux communautaires; Recrutement; Activité des flottilles; Mesures reglementaires; Gestion de la ressource; Modèle biologique.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/rapport-2578.pdf
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