Data/hora: 01/06/2024 10:44:11

Provedor de dados: 	5	
País: 	France	
Título: 	Simulation de l'effet de 3 scénarios de réduction des teneurs de l'Elorn en nitrate sur l'eutrophisation de la rade de Brest	
Autores: 	Menesguen, Alain.	
Data: 	2007-12-03	
Ano: 	2007	
Palavras-chave: 	Mathematical model; Dinoflagellate; Diatom; Ulva; Green tide; Nitrate; Moulin Blanc cowe; Elorn river; Bay of Brest; Modèle mathématique; Dinoflagellé; Diatomée; Ulve; Marée verte; Nitrate; Anse du Moulin Blanc; Elorn; Rade de Brest.	
Resumo: 	This study commissioned by the Syndicat de l'Elorn et de la Rivière de Daoulas aimed at assessing on a mathemical modelling basis the impact of 3 scenarios of reduction of the loadings of Elorn river (imposed concentrations : 20, 15 et 10 mg/L NO3) on the status of ulva mass proliferation in the Moulin Blanc cowe (Bay of Brest). An ecological 3D model of N, P and Si cycling in the bay of Brest has been applied to a "reference situation": 2004 meteorological forcing combined to recent loadings of the new sewage plant. This model showed that: · the 3 reduction scenarios did not reduce significantly the early summer biomass of ulvae, but allowed to slightly reduce the subsequent summer and autumn levels of biomass (up to 20% reduction for 10 mg/L NO3). The theoretical total removal of nitrate in the Elorn river does not suppress the ulva gree tide, which maintains at a lower biomass feeding on nitrate brought by sources different from Elorn river.  · every nitrate reduction scenario brings a quasi-proportional reduction of summer dinoflagellate bloom intensity in the Elorn estuary.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/2007/rapport-6327.pdf	
Relação: 	http://archimer.ifremer.fr/doc/00000/6327/	
Formato: 	application/pdf