Data/hora: 08/06/2024 17:39:42

Provedor de dados: | 5
País: | France

Título:

Le Balanced Harvest est-il une bonne idée ? Une approche par modélisation écosystémique pour reconstruire les pêcheries et la structure trophique en mer Celtique.

Is Balanced Harvest a good idea? An ecosystem modelling approach to rebuild fisheries and trophic structure of the Celtic Sea

Autores: | Perez, Ilan.
Data: | 2019
Ano: | 2019
Palavras-chave: | Balanced harvest; Gestion des pêches; Ecopath with Ecosim; Mer Celtique; Balanced Harvest; Fisheries managmeent; Ecopath with Ecosim; Celtic Sea.
Resumo: | Balanced harvest has been suggested as a new paradigm of fisheries management in order to minimize the impacts of fisheries on marine ecosystems, by distributing the fishing pressure on all species and trophic levels, proportionally to the productivity of each group, to maintain their relative abundance in the ecosystem. However, this exploitation pattern has been criticized by a few scientists arguing that exploitation of all trophic levels may lead to a large ecosystem impact, due to the cumulative effects of fishing along the food web. There is no consensus within the literature about Balanced Harvest implementation and effects because scarce knowledge. Using Ecopath with Ecosim model of the Celtic Sea as case studies, we assessed the impacts of Balanced Harvest on the trophic structure of these ecosystems. Results confirmed that exploiting all species or trophic boxes proportionally to their productivity might lead to an unbalanced structure, characterized by a large impact on predators. Alternative scenarios were tested in order to identify a less impacting fishing strategy on ecosystems.
Tipo: | Text
Idioma: | Francês

Identificador:

https://archimer.ifremer.fr/doc/00594/70652/68844.pdf

https://archimer.ifremer.fr/doc/00594/70652/

Formato: | application/pdf

Fonte:

info:eu-repo/semantics/openAccess

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