Data/hora: 04/06/2024 04:26:36

Provedor de dados: | 5
País: | France
Título: | Evolution du peuplement halieutique de la baie de Vilaine au cours des décennies 1980 et 1990
Autores: | Desaunay, Yves; Guerault, Daniel.
Data: | 2003-02
Ano: | 2003
Palavras-chave: | Habitat; Survey; Bay of Vilaine; Fish community; Habitat; Suivi; Baie de Vilaine; Poissons; Peuplement.
Resumo: | A beam trawl survey of the Bay of Vilaine was conducted from 1981 to 1997. Changes in the commercial fish community were analyzed by comparing the characteristics at the year and decadal scales. The community structure and nursery function of the Bay were steady during the period. However, specific richness, assiduity and distribution indices demonstrated a reduction in the second decade. The global abundance fell from 105.8 ind.ha-1 to 31.3 ind.ha-1. This trend was less marked for the external more marine stratum, which exhibited the lowest densities. The results are discussed in terms of ecological meaning of such a community, compared with the overall demersal fish community. The reasons of the decrease are questioned regarding nursery habitat, local fishing pressure and estuarine habitat management. Such a survey provide reference points to monitor the coastal ecosystem health.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2003/rapport-1288.pdf
Relação: | http://archimer.ifremer.fr/doc/00000/1288/
Formato: | application/pdf