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	Provedor de dados ArchiMer (2) Autor Gasc, Anne (2) Souchu, Philippe (2) Bibent, B (1) Bibent, Bertrand (1) Collos, Y (1) Collos, Yves (1) Descolas Gros, Chantal (1) Deslous-paoli, Jean-marc (1) Fouilland, Eric (1) Pons, Virginie (1) Tournier, Henri (1) Vaquer A, André (1) Vaquer, A (1) Mais... Palavra-chave Anoxia (1) Autotrophy (1) Carboxylase activities (1) Eutrophication (1) Heterotrophy (1) Mediterranean Sea (1) Nitrogen (1) Nitrogen enrichments (1) Phosphorus (1) Size fractionated phytoplankton (1) Thau lagoon (1) Mais... Tipo do documento Text (2) Ano 2002 (1) 1998 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Biogeochemical aspects of bottom anoxia in a Mediterranean lagoon (Thau, France) ArchiMer Souchu, Philippe; Gasc, Anne; Collos, Y; Vaquer, A; Tournier, Henri; Bibent, B; Deslous-paoli, Jean-marc. Physical and chemical characteristics (temperature, salinity, dissolved oxygen), nutrients [dissolved inorganic nitrogen (DIN), soluble reactive phosphorus (SRP) and silicate], dissolved organic nitrogen (DON) and phosphorus and particulate matter [particulate organic carbon (POC) and nitrogen (PON) and chlorophyll a] were measured at a station located in the deepest part of the Thau lagoon (8.5 m), France, during a 10 d period of bottom anoxia in summer 1994. The upper 8 cm of sediment were also analyzed for ammonium (NH(4)(+)) and SRP concentrations in the porewater. The study period was characterized by mean wind speed under 4 m s(-1) which induced an increase of surface temperature from 18 to 29 degrees C with the formation of a thermocline. The... Tipo: Text Palavras-chave: Anoxia; Nitrogen; Phosphorus; Eutrophication; Thau lagoon; Mediterranean Sea. Ano: 1998 URL: http://archimer.ifremer.fr/doc/00070/18142/15694.pdf Influence of nitrogen enrichment on size-fractionated in vitro carboxylase activities of phytoplankton from Thau Lagoon (Coastal Mediterranean Lagoon, France) ArchiMer Fouilland, Eric; Descolas Gros, Chantal; Collos, Yves; Vaquer A, André; Souchu, Philippe; Gasc, Anne; Bibent, Bertrand; Pons, Virginie. The influence of dissolved inorganic and organic nitrogen (DIN and DON) enrichments on pools of enzymes responsible for CO2 fixation by the Calvin-Benson (Rubisco) and beta-carboxylation pathways (beta-carboxylases) were studied in a natural plankton assemblage. The plankton community from a coastal Mediterranean lagoon were incubated in situ for 24 h with initially ammonium, nitrate and DON (taurine) enrichments and compared to a control without any enrichment. An increase of small picophytoplankton and diatom biomass was observed in the enriched inorganic nitrogen treatments 7 - 10 h after the initial enrichment. Phytoplankton biomass decreased in the control and under taurine enrichment suggesting an inorganic nitrogen limitation of phytoplankton growth. Tipo: Text Palavras-chave: Heterotrophy; Autotrophy; Nitrogen enrichments; Size fractionated phytoplankton; Carboxylase activities. Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-451.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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