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	Provedor de dados ArchiMer (2) Autor Muir, D (2) Davis, C (1) Lucas, M (1) Painting, S (1) Robb, F (1) Palavra-chave Bacteria (2) Alcohols (1) Algal blooms (1) Biogeochemistry (1) Biomass (1) Carbon cycle (1) Ecological associations (1) Food conversion (1) Metabolism (1) Microorganisms (1) Nannoplankton (1) Physiology (1) Pseudomonas (1) Starvation (1) Survival (1) Upwelling (1) Vibrio (1) Mais... Tipo do documento Text (2) Ano 1984 (2) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Estimates of carbon flow through bacteriplankton in the S. Benguela upwelling region based on 3H-thymidine incorporation and predator-free incubations. ArchiMer Lucas, M; Painting, S; Muir, D. Spatial and temporal estimates of bacterial numbers, biomass, activity and production were measured in the S. Benguela upwelling system during the course of a phytoplankton bloom. Bacterial numbers and biomass were highest in the euphotic zone and correlated closely with particulate carbon in the water column rather than with chlorophyll a concentrations. 3H-Thymidine incorporation gave good estimates of production. Differential utilisation of photosynthetic exudates and detrital POC by bacterioplankton during the course of a bloom might account for the varying significance ascribed to exudates and POC as a source of carbon for bacterial production. Tipo: Text Palavras-chave: Ecological associations; Algal blooms; Biomass; Microorganisms; Carbon cycle; Bacteria; Nannoplankton; Upwelling; Biogeochemistry. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-985.pdf Maintenance of discrete bacterial populations in adjacent marine habitats. ArchiMer Robb, F; Muir, D; Davis, C. Some mechanisms of selection which operate on marine Vibrio and Pseudomonas strains during survival in dilute environments have been examined. Mannitol uptake and utilisation systems are more efficient in the Vibrio strain compared with the Pseudomonas strain during starvation survival. A Vibrio mutant strain lacking mannitol uptake showed no greater loss of viability during starvation survival than mannitol positive strains. The Vibrio strain appears to be constitutive with respect to mannitol uptake systems, whereas the Pseudomonas strain examined is inducible. Active uptake systems for glucose, glutamate, alanine and aspartic acid were efficiently maintained during starvation survival in the Vibrio strain. Results suggest that membrane uptake systems... Tipo: Text Palavras-chave: Pseudomonas; Vibrio; Bacteria; Physiology; Alcohols; Food conversion; Survival; Starvation; Metabolism. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-960.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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