| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Contrasting perception of fish trophic level from stomach content and stable isotope analyses: A Mediterranean artificial reef experience
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| Autores: |
Cresson, Pierre
Ruitton, Sandrine
Ourgaud, Melanie
Harmelin-vivien, Mireille
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| Data: |
2014-03
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| Ano: |
2014
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| Palavras-chave: |
Artificial reefs
Fish diet
NW Mediterranean
Stable isotopes
Stomach content
Trophic level
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| Resumo: |
A large complex of artificial reefs was deployed in the Bay of Marseilles, North-Western Mediterranean, for the enhancement of commercial fisheries stocks. Carbon and nitrogen stable isotope and stomach content analyses were performed on 23 fish species collected on the artificial reefs to assess their trophic position and feeding behaviour. Results indicated that fish diets were not modified on the artificial reefs compared to natural environments, nor was the structure of their trophic network. Artificial reefs, with their complex design, provide diverse and abundant food sources for fishes. Ranges of delta C-13 and delta N-15 of artificial reef fishes were comparable to those recorded in natural Mediterranean environments, with a similar trophic organization. However, some discrepancies appeared when comparing fish trophic level based on isotopic or diet results, which calls for a careful interpretation of stable isotope values as direct indicators of trophic level.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00186/29708/28188.pdf
DOI:10.1016/j.jembe.2013.11.014
http://archimer.ifremer.fr/doc/00186/29708/
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| Editor: |
Elsevier Science Bv
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| Formato: |
application/pdf
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| Fonte: |
Journal Of Experimental Marine Biology And Ecology (0022-0981) (Elsevier Science Bv), 2014-03 , Vol. 452 , P. 54-62
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| Direitos: |
2013 Elsevier B.V. All rights reserved
info:eu-repo/semantics/openAccess
restricted use
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