Trends in catch-per-unit-effort, stock biomass and recruitment in the North and Northwest Iberian Atlantic Nephrops stocks
Nephrops norvegicus is a burrowing decapod with patchy distribution. In the North and Northwest Iberian shelf and upper slope, it is a by-catch species of the bottom trawl mixed fisheries. The International Council for the Exploration of the Sea (ICES) assesses four Nephrops stocks in the area: Nort...
| Autores: | , |
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| Formato: | artículo |
| Fecha de publicación: | 2003 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/322392 |
| Acesso em linha: | http://hdl.handle.net/10261/322392 |
| Access Level: | acceso abierto |
| Palavra-chave: | Pesquerías Centro Oceanográfico de A Coruña Nephrops norvegicus landings CPUE Long-term trends stock biomass recruitment North and Northwest Iberian Peninsula |
| Resumo: | Nephrops norvegicus is a burrowing decapod with patchy distribution. In the North and Northwest Iberian shelf and upper slope, it is a by-catch species of the bottom trawl mixed fisheries. The International Council for the Exploration of the Sea (ICES) assesses four Nephrops stocks in the area: North Portugal, West and North Galicia and Cantabrian Sea. From a relatively buoyant Nephrops fishery in the period 1975–1989, with annual average landings of 1225 t for the entire area, the landings declined substantially to 270 t in 2000. The general trend for the region is a decline of more than 60% in the catch-per-unit-effort in the last decade. These indicators make the status of the Nephrops stocks a matter of concern. In this paper, trends in the time series of Nephrops fishery data are described and evidence from age-based assessment is given of sharp declines in stock biomass and recruitment |
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