| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Fishing destabilizes the biomass flow in the marine size spectrum
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| Autores: |
Rochet, Marie-joelle
Benoit, E.
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| Data: |
2012-01
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| Ano: |
2012
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| Palavras-chave: |
Size spectrum
Ecosystem approach to fisheries management
Biodiversity
Fishing selectivity
Community stability
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| Resumo: |
Fishing impacts on marine food webs are predicted by simulations of a size spectrum community model. In this model, predation is determined by predator and prey size and abundance, and drives predator growth and prey mortality. Fishing amplifies temporal oscillations in the biomass flow. Oscillations appear at lower fishing intensity and have wider amplitude when fishing is selective (removes a narrow size range) and/or when large fish are targeted, than when fishing is more balanced (catching a larger size range) or when small fish are targeted. A novel index of size diversity is developed, and is shown to be sensitive to both fishing intensity and selectivity. To avoid unstable food web dynamics with potential harmful consequences for fisheries, limiting both fishing intensity and selectivity might be an appropriate exploitation strategy.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00053/16462/14025.pdf
DOI:10.1098/rspb.2011.0893
http://archimer.ifremer.fr/doc/00053/16462/
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| Editor: |
Royal Soc
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| Formato: |
application/pdf
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| Fonte: |
Proceedings Of The Royal Society B-biological Sciences (0962-8452) (Royal Soc), 2012-01 , Vol. 279 , N. 1727 , P. 284-292
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| Direitos: |
2011 Royal Society of London
info:eu-repo/semantics/openAccess
restricted use
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