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	Provedor de dados ArchiMer (1) Autor Riou, Stéphane Alain (1) Palavra-chave 15N (1) Denitrification (1) Dénitrification (1) Lagune (1) MPN (1) Marine laboon (1) N-serve (1) N6SERVE (1) NPP (1) Nitrification (1) Sediment (1) Sédiment (1) Zostera noltii (1) Mais... Tipo do documento Text (1) Ano 1999 (1) País France (1) Idioma Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Cycle de l'azote à l' interface eau-sédiment dans le Bassin d'Arcachon : rôle des bactéries dans les processus de perte en azote (nitrification-dénitrification) ArchiMer Riou, Stéphane Alain. Bacterial nitrification and denitrification were studied in the sediments of the Bassin d'Arcachon, a macrotidallagoon located in the Southwestern Atlantic French coast colonized by extensive Zostera noltii  meadows. Nitrifiers were enumerated by MPN method. Densities were law : from 102 to 104 bacteria per ml of sediment presenting an increase during winter. Nitrifying activities were measured by NH4+  accumulation N-serve block technique. Activities were ranged from 0 to 90 µmol m-2 h-1 and nitrification represented 120-140 mmol m-2 yr-1 for intertidal sediments. The 15N  isotope pairing technique was applied to sediment samples from the whole bay for determining the denitrification rates. Average rates were 10-20 µmol m·2 h-1 with a maximum of 75 µmol... Tipo: Text Palavras-chave: Nitrification; Dénitrification; Sédiment; Zostera noltii; Lagune; NPP; N6SERVE; 15N; Nitrification; Denitrification; Sediment; Zostera noltii; Marine laboon; MPN; N-serve; 15N. Ano: 1999 URL: http://archimer.ifremer.fr/doc/00443/55439/56959.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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