Consulta: subjectFacets:"Small pelagics"
Registros recuperados: 2
Data/hora: 10/06/2024 15:01:41

Food in the Sea: Size Also Matters for Pelagic Fish
Provedor de dados: 5
Autores: Queiros, Quentin; Fromentin, Jean-marc; Gasset, Eric; Dutto, Gilbert; Huiban, Camille; Metral, Luisa; Leclerc, Lina; Schull, Quentin; Mckenzie, David; Saraux, Claire.
Small pelagic fish are key components of marine ecosystems and fisheries worldwide. Despite the absence of recruitment failure and overfishing, pelagic fisheries have been in crisis for a decade in the Western Mediterranean Sea because of a marked decline in sardine size and condition. This situation most probably results from bottom-up control and changes in the plankton community toward smaller plankton. To understand such an unusual phenomenon, we developed an original and innovative experimental approach investigating the mechanisms induced by a reduction in the quantity and size of sardine prey. While experimentations offer the unique opportunity to integrate behavior and ecophysiology in understanding key demographic processes, they remain rarely...
Tipo: Text
Palavras-chave: Experimentation; Small pelagics; Sardina pilchardus; Body condition; Bottom-up control.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61669/65585.pdf

EcoTroph: a simple model to assess fishery interactions and their impacts on ecosystems
Provedor de dados: 5
Autores: Gasche, Loic; Gascuel, Didier.
The EcoTroph model leaves aside the notion of species, and models the functioning of marine ecosystems as flows of biomass from low to high trophic levels, so as to quantify easily the impacts of fishing at an ecosystem scale. In this paper, based on two case studies we present a new development of the EcoTroph model that is devoted to the analysis of fishery interactions and impacts of fleet segments on ecosystems. First, deriving an EcoTroph model from an Ecopath model of the Guinea ecosystem, the impacts of the artisanal fishery are distinguished from those of the industrial fishery. It appears that these fisheries do not always compete for the same fish groups but that they both strongly impact the ecosystem and moderately impact one another. Then, an...
Tipo: Text
Palavras-chave: Ecopath; Ecosystem modelling; EcoTroph; Fishery interactions; Fishing impact; Guinea; Management scenario; Small pelagics; Southern Benguela.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00138/24970/23123.pdf