Consulta: subjectFacets:"Biogeochemical models"
Registros recuperados: 2
Data/hora: 26/07/2024 22:51:12

Les "marées vertes" en Bretagne, la responsabilité du nitrate
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Menesguen, Alain.
Since 25 years, an increasing number of beaches and coves along the Britanny coast are invaded from spring until autumn by proliferating green macroalgae (free ulvae, fixed enteromorphae). This typical case of eutrophication, which has been well studied in the bays of Saint-Brieuc, Lannion, Douarnenez and Brest, could be explained by the conjunction of a natural containment of shallow water masses with a recent enrichment of them by nitrate river loadings. In the naturally confined sites, field measurements of summer biomass showed a good correlation with the spring nitrate river loadings ; furthermore, the summer rarefaction of these loadings explains the fall of the nitrogen content of the ulvae, which induces the summer stop of the algal growth.  The...
Tipo: Text
Palavras-chave: Intensive farming; Biogeochemical models; Coastal eutrophication; Nitrate; Ulva; Green tide; Agriculture intensive; Modèles biogéochimiques; Eutrophisation côtière; Nitrate; Ulve; Marée verte.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-143.pdf

Modelling the marine eutrophication: A review
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Menesguen, Alain; Lacroix, Genevieve.
In the frame of a national, joint scientific appraisal, 45 scientific French-speaking experts have been mandated in 2015–2016 by the French ministries of Environment and Agriculture to perform a global review of scientific literature dealing with the eutrophication phenomenon, in freshwater as well as in marine waters. This paper summarizes the main results of this review restricted to a sub-domain, the modelling approach of the marine eutrophication. After recalling the different aims pursued, an overview is given on the historical time course of this modelling effort, its world distribution and the various tools used. Then, the main results obtained are examined, highlighting the specific strengths and weaknesses of the present models. Needs for future...
Tipo: Text
Palavras-chave: Marine eutrophication; Biogeochemical models; Deterministic versus statistical; Nutrient reduction scenarios; Land-sea coupling; Climate change.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00439/55066/56546.pdf