Data/hora: 05/06/2024 17:08:27

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France

Título:

Impacts de l’émergence d’un top-prédateur dans un ecosystème exploité : le merlu et le lieu noir de mer du Nord. Quelles interactions ? Quelles conséquences ?

Impacts of a top-predator emergence in an exploited ecosystem: North Sea hake and saithe. Which interactions? What consequences?

Autores: | Cormon, Xochitl.
Data: | 2015-12-11
Ano: | 2015
Palavras-chave: | Compétition; Lieu noir; Merlu; Simple réseau trophique; Émergence d’un prédateur; Mer du nord; Exploitative competition; Saithe; Hake; Simple foodweb; Up-coming predator; North sea.
Resumo: | North Sea saithe (Pollachius virens) has high economic value for European fisheries. In recent years, North Sea saithe abundance has decreased, while abundance of hake (Merluccius merluccius), which was rarely fished in the North Sea, has increased dramatically in the area. This work investigates the nature of the ecological interactions between saithe and hake in the North Sea, in order to understand if recent hake emergence in this area could explain, at least partially, the recent decline of the saithe stock. The results obtained during this research suggested competitive interactions between saithe and hake predators in the area. In addition, this investigation revealed potential negative effects of hake on the resident saithe stock. Therefore, hake emergence in the North Sea must be taken into account when managing commercial fish stocks, the sustainability of which may be threatened by this up-coming predator. Finally, the results obtained within this PhD study highlight the importance of hake as an up-coming predator and competitor in the North Sea, and provide the necessary basis for further investigations of hake potential ecological and economic function in this exploited ecosystem.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00345/45638/45268.pdf

http://archimer.ifremer.fr/doc/00345/45638/

Editor: | Université Lille 1
Formato: | application/pdf

Fonte:

2015 Université de Lille

info:eu-repo/semantics/openAccess

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