| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Improving the definition of fishing effort for important European fleets by accounting for the skipper effect
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| Autores: |
Marchal, Paul
Andersen, B
Bromley, D
Iriondo, A
Mahevas, Stephanie
Quirijns, F
Rackham, B
Santurtun, M
Tien, N
Ulrich, Clara
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| Data: |
2006-03
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| Ano: |
2006
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| Palavras-chave: |
Fishing effort
Fishing mortality
Catch rates
GLM modeling
Skipper effect
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| Resumo: |
The scope of this paper is to quantify, for a wide selection of European fisheries, fishing tactics and strategies and to evaluate the benefits of adjusting the definition of. fishing effort using these elements. Fishing tactics and strategies were identified by metiers choices and a series of indices. These indices have been derived to reflect shifts in tactics (within a fishing trip) and in strategies (within a year). The Shannon-Wiener spatial diversity indices of fishing tactics (FT_SW) and strategies (YE_SW) had the greatest impact on catch rates. In particular, FT_SW was always negatively correlated to catch rates. One may anticipate that during a fishing trip, vessels with high FT_SW have been searching fish aggregations for a long time, while vessels with low FT_SW have been more efficient in finding these aggregations. The linkage between YE_SW and catch rates was of a more complex nature. Adjusting fishing effort by means of (i) the metier effect and (ii) the indices of tactics and strategies generally led to a substantial gain in the precision of the relationship between fishing mortality and fishing effort.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/2006/publication-1339.pdf
https://archimer.ifremer.fr/doc/00000/1339/
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| Editor: |
NRC
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| Formato: |
application/pdf
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| Fonte: |
Canadian journal of fisheries and aquatic sciences (0706-652X) (NRC), 2006-03 , Vol. 63 , N. 3 , P. 510-533
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| Direitos: |
2006 NRC Research Press Electronic Journals
info:eu-repo/semantics/openAccess
restricted use
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