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	Provedor de dados ArchiMer (2) Autor Bouvy, M (2) Cecchi, P (1) Delille, D (1) Dufour, Robert (1) Got, P (1) Leboulanger, C (1) Pagano, M (1) Mais... Palavra-chave Anoxic conditions (1) Bacteria (1) Deltamethrin (1) Heterotrophic organisms (1) Microorganisms (1) Organic carbon (1) Paraquat (1) Physicochemical properties (1) Planktonic organisms (1) Polar waters (1) Population number (1) Reservoirs (1) Seasonal variations (1) Sulfate reduction (1) Sulphur (1) West Africa (1) Mais... Tipo do documento Text (2) Ano 2009 (1) 1984 (1) País France (2) Idioma Francês (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Microflores sulfatoreductrices en milieu subantarctique. Relations avec quelques parametres physicochimiques et biologiques. (Microflores totales et heterotrophes) ArchiMer Delille, D; Bouvy, M. The archipelago of Kerguelen with its complex fjord distribution is particularly interesting for the study of anoxic systems. Between 1968 and 1972, several stations were investigated fortnightly. One of these was further sampled weekly throughout 1982. Each sample series of sediment included the superficial aerobic and subsuperficial anaerobic levels. Each level was examined for direct epifluorescent counts, heterotrophic and sulfate-reducing bacterial numbers by M.P.N. methods, organic carbon and sulfide measurements. Sulfate-reducing bacteria seemed less related to total biomass than the heterotrophic microflora, the latter being dependent on organic supplies. The hydrogen sulfide production was directly related to the presence of sulfate reducers;... Tipo: Text Palavras-chave: Anoxic conditions; Bacteria; Heterotrophic organisms; Sulphur; Organic carbon; Physicochemical properties; Seasonal variations; Population number; Microorganisms; Polar waters; Sulfate reduction. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-970.pdf Responses of Planktonic Microorganisms from Tropical Reservoirs to Paraquat and Deltamethrin Exposure ArchiMer Leboulanger, C; Bouvy, M; Pagano, M; Dufour, Robert; Got, P; Cecchi, P. This study focused on the effects of two pesticides, paraquat (herbicide) and deltamethrin (insecticide), which are two common molecules used intensively in Burkina Faso. Natural bacterial populations, phytoplankton cultures (one cyanobacterium, Cylindrospermopsis raciborskii, and one chlorophycea, Monoraphidium sp.), and two species of zooplankton (Diaphanosoma excisum and Moina micrura) were isolated from aquatic communities and were used as biological targets in the experimental protocols. Paraquat was moderately toxic to bacteria and phytoplankton, whereas deltamethrin was significantly toxic only to the zooplankton species. Paradoxically, the chlorophycea Monoraphidium sp. exhibited a significant increase of in vitro fluorescence after 48 h at the... Tipo: Text Palavras-chave: West Africa; Reservoirs; Planktonic organisms; Deltamethrin; Paraquat. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-5287.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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