Consulta: subjectFacets:"Eau colorée"
Registros recuperados: 2
Data/hora: 08/06/2024 11:48:27

L'utilisation de modèles écologiques dans la lutte contre l'eutrophisation des eaux côtières françaises
Provedor de dados: 5
Autores: Menesguen, Alain.
Increasing anthropogenic nitrogen and phosphorus loadings in some coastal areas have induced during the last twenty years excessive production of algal material, either phytoplanktonic or macrophytic. This so-called eutrophication phenomenon alters the usual structure of ecosystem and can lead to massive kills caused by anoxia in some extreme cases, when almost all the dissolved oxygen in bottom waters has been consumed by organic matter decomposition. Just behind the semi-enclosed lagoons, the most sensible areas are the dilution plumes of main rivers. In the case of French coasts, mediterranean lagoons have been eutrophicated for a long time, whereas the coastal areas of the Bay of Biscay and English Channel have been partially preserved by the strong...
Tipo: Text
Palavras-chave: Ecological models; Hydrodynamical models; Residence time; Limiting factor; Phytoplankton blooms; Green tides; Coastal eutrophication; Modèles écologiques; Modèles hydrodynamiques; Temps de résidence; Elément limitant; Eau colorée; Marée verte; Eutrophisation côtière.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-144.pdf

Eau colorée à Lingulodinium polyedrum (Stein) Dodge, dans une zone aquacole du littoral du Doukkala (Atlantique marocain)
Provedor de dados: 5
Autores: Bennouna, A; Berland, B; El Attar, J; Assobhei, O.
A red tide of Lingulodinium polyedrum occured along the moroccan atlantic coast in july 1999. Observed in the beginning of the month in the Kenitra area, it spreads with the coastal drift as far as the south of safi, passing on its way upon a sanitary monitored area. This area which is submitted to an all year round bimonthly monitoring analysis of phytoplankton, contains significant natural beds of oysters, clams and mussels, as well as shellfish farms in Oualidia and Sidi Moussa lagoons. However, during this period of bloom, there was weekly monitoring of hydrologic and climatic data associated with phytoplankton analysis to identify the causes of this bloom. This bloom occured in 17-18degreesC surface waters, temperatures which are favourable to...
Tipo: Text
Palavras-chave: Eau colorée; Lingulodinum polyedrum; Toxicité; Maroc; Red tide; Lingulodinium polyedrum; Toxicity; Morocco.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43317/42937.pdf