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Registros recuperados: 8
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A laboratory model system for analysing microbial interactions occurring in anoxic estuarine sediments. ArchiMer
Herbert, R; Keith, S.
Defined mixed populations of Clostridium butyricum, Desulfovibrio desulfuricans and Chromatium vinosum co-existed for long periods when grown in a single stage chemostat with glucose as sole carbon source. The nature and availability of the inorganic nitrogen source exerted a major effect on carbon flow in the experimental system. The data show that both the C. butyricum and D. desulfuricans isolates can utilise NO sub(3) as an e super(-)acceptor with an increase in cell yield. Under these growth conditions the free S super(2-) levels were lower resulting in more stable mixed populations. In addition the data show that the C. butyricum produces more oxidised fermentation end-products (acetate) when NO sub(3) super(-) was available and more reduced products...
Tipo: Text Palavras-chave: Chromatium vinosum; Desulfovibrio desulfuricans; Clostridium butyricum; Biogeochemistry; Models; Bacteria; Detritus; Mineralization; Anoxic sediments; Estuarine sedimentation; Analytical techniques; Carbon cycle; Interspecific relationships; Microbiology.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-947.pdf
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Cartographie du prisme sedimentaire Holocene en baie de Seine orientale, par sismique reflexion a haute definition ArchiMer
Auffret, J; D'Ozouville, L.
After the cartography of a Holocene sedimentary prism, results of 8,000 years of natural evolution and 150 years of coastal equipment, the authors research an active sedimentary system, characteristic of present evolution.
Tipo: Text Palavras-chave: Holocene; Sedimentary structures; Paleoceanography; Estuarine sedimentation; Sediment distribution; Seismic reflection profiling; Cartography.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1273.pdf
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Evaluation des apports fluviatiles dans l''estuaire de la Seine ArchiMer
Avoine, J.
Economic activities and urbanization along the Seine watershed, are the main factors of increased river discharge with natural deposits. A long term supervision of this river has allowed the assessment of the liquid flow rate, the solid load, and the metallic pollution.
Tipo: Text Palavras-chave: Seasonal variations; Trace metals; Sediment transport; Fluid flow; Brackishwater pollution; Estuarine sedimentation; River discharge.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1274.pdf
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Evolution des moyens d''investigation hydrosedimentaire dans l''estuaire de la Seine ArchiMer
Rambaud, B; Hauville, S.
After using physical and mathematical models to equip Seine Estuary, it was necessary to develop new investigation methods. This paper describes the methodology and the means used as the first results obtained.
Tipo: Text Palavras-chave: Data processing; Port installations; Marine transportation; Measurement; Data acquisition; Estuarine sedimentation; Estuarine dynamics.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1313.pdf
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Impact biosedimentologique d'amenagements portuaires en estuaire de Seine ArchiMer
Desprez, M; Dupont, J.
Many harbour installations have reduced the intertidal zone and involved estuary choking by marine sediments. In 1980, weirs were built in dikes of navigation channels. This study strikes the balance of their impact on estuarine biofacies and points out indicator species for the study of biological impact of environmental design.
Tipo: Text Palavras-chave: Indicator species; Biofacies; Estuarine sedimentation; Benthos; Port installations; Environmental impact; Coastal zone management.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1314.pdf
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Influence des apports fluviatiles en Baie de Seine ArchiMer
Avoine, J; Crevel, L.
Hydrological study of Seine Bay displays two areas differentiated by salinity distribution. One has marine characteristics and the other is under fluvial influence. In this paper the authors give the main results of exchanges between the environments, obtained by the study of water dilution, solid particles dispersion, and their contribution to sedimentation.
Tipo: Text Palavras-chave: Estuarine front; River plumes; Trace metals; Salinity; Residual flow; Seasonal variations; Environmental effects; Sediment dynamics; Estuarine sedimentation; River discharge.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1275.pdf
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Modern morpho-sedimentological patterns in a tide-dominated estuary system: the Bay of Brest (west Britanny, France) ArchiMer
Gregoire, Gwendoline; Ehrhold, Axel; Le Roy, Pascal; Jouet, Gwenael; Garlan, Thierry.
Long-studied with respect to its sedimentological features (1897), the Bay of Brest (Western Britanny, France) is a textbook example of a tide-dominated estuary. Characterised by macrotidal conditions, this estuary system is sheltered from the open sea (Iroise Sea) by a narrow strait that partitions the wave tide influences and continental/marine inputs. Sediments are supplied to the bay both by rivers (the Aulne and Elorn rivers) and by marine tidal currents. This study presents new analyses of detailed facies and morphological patterns, based on the integration of multisource data compiling seabed sampling, swath and LIDAR bathymetry, and backscatter imagery. The Main Map, at a scale of 1:90,000, contains (1) a sedimentological distribution using the...
Tipo: Text Palavras-chave: Morpho-sedimentological cartography; Tide-dominated; Estuary system; Estuarine sedimentation; Backscatter imagery; Bay of Brest.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00334/44492/44224.pdf
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Morfología y sedimentación del sistema estuarino Estero Salado - Río Guayas OceanDocs
Rada, F..
Durante el período 1984-1985 se realizaron estudios geológicos en el sistema estuarino Estero Salado - Río Guayas, los mismos que comprendieron trabajos de geomorfología, geofísica (sísmica) y sedimentología. Los resultados de esas investigaciones, que se presentan en este artículo, llevan a establecer las diferencias existentes entre el Estero Salado y Río Guayas como consecuencia probable del mayor aporte de sedimentos y corrientes de agua recibida por el Río Guayas, y de la carga adicional de sedimentos por la construcción de camaroneras y tala de manglares.
Tipo: Journal Contribution Palavras-chave: Geomorphology; Sediments; Estuarine sedimentation; Estuaries; Estuaries; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1986 URL: http://hdl.handle.net/1834/2143
Registros recuperados: 8
Primeira ... 1 ... Última
 

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