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Capacity management, not stock status or economics, drives fleet dynamics in the Bay of Biscay ecosystem on a decadal time scale

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Detalles del recurso

Pertenece a: ArchiMer, Institutional Archive of Ifremer (French Research Institute for Exploitation of the Sea)  

Descripción: This paper introduces a semiqualitative approach to analyse the joint dynamics of fleets and stocks in a multispecies, multifleet fishery. We ask whether changes in fleets affect resource dynamics and whether trends in resource influence fleet dynamics more than external drivers do. External drivers include vessel buyback, fuel price, and fish prices, as well as environmental fluctuations. Resource status is measured by abundance and length metrics; fleet capacity is measured by total horse power, and economic metrics such as profitability and earnings are examined as well. A maximum likelihood approach is used to identify the combined metric trends with the largest support in the data. The approach is applied to the French Bay of Biscay fisheries in 2000-2007. Combined-metric time trends suggest that decreases in fleet capacity did not result in decreasing fishing impacts; trends in stocks and fish prices were not the major drivers of changes in fleets either. Rather, the vessel buyback program might have been the main factor determining fleet dynamics over that period.

Autor(es): Rochet, Marie -  joelle -  Daures, Fabienne -  Trenkel, Verena - 

Id.: 55237740

Idioma: English  - 

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Tipo de recurso: Texto Narrativo  -  Publication  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: 2012 NRC Research Press

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Canadian Journal Of Fisheries And Aquatic Sciences (0706-652X) (Canadian Science Publishing, Nrc Research Press), 2012-04 , Vol. 69 , N. 4 , P. 695-710
[References] http://archimer.ifremer.fr/doc/00076/18730/

Fecha de contribución: 14-sep-2013

Contacto:

Localización:
* DOI:10.1139/F2012-002


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