Consulta: subjectFacets:"Trophic model"
Registros recuperados: 2
Data/hora: 01/06/2024 08:40:30

Facing the necessity of describing estuarine ecosystems: a review of food web ecology study techniques
Provedor de dados: 5
Autores: Pasquaud, Stéphanie; Lobry, Jeremy; Elie, Pierre.
Estuarine areas are sites of human pressures and degradation. In order to maintain and/or restore the quality of estuarine ecosystems, it is necessary to describe their structure and functioning. For that reason, many recent scientific works focus on food webs, which are depicted as being good indicators of the functioning of aquatic ecosystems. Hence it is necessary to question how estuarine food webs can be described. This paper proposes a pragmatic and practical review of the most widely used techniques (stomach/gut content analysis, stable isotope ratios and biochemical markers) with emphasis on their main advantages, drawbacks and bias according to possible ecological goals (ecological quality objectives). These approaches, although quite different,...
Tipo: Text
Palavras-chave: Trophic model; Biochemical marker; Stable isotope; Stomach/gut content analysis; Estuarine food web.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2784.pdf

Interactions between a natural food web, shellfish farming and exotic species: The case of the Bay of Mont Saint Michel (France)
Provedor de dados: 5
Autores: Arbach Leloup, F.; Desroy, Nicolas; Le Mao, Patrick; Pauly, D.; Le Pape, Olivier.
To ensure sustainable uses of the coastal zone, an integrated ecosystemic approach and ecosystem models are required to frame ecological processes and evaluate environmental impacts. Here, a mass-balance trophic (Ecopath) model of the Mont Saint Michel Bay (MSMB) was developed, to analyze the bay's functioning as an ecosystem. This bay, intensively exploited by fishing and for shellfish farming, is also suffering from the proliferation of the gastropod Crepidula fornicata, an exotic species.  The MSMB model has 18 compartments, from the primary producers to top predators, and emphasizes the large biomass of filter feeders. The model identified the MSMB as a highly productive ecosystem controlled largely from the bottom-up, and strongly impacted by huge...
Tipo: Text
Palavras-chave: Mont Saint Michel Bay; Crepidula fornicata; Invasive species; Shellfish farming; Trophic model; Ecopath.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2007/publication-2605.pdf