Consulta: creatorFacets:"Bianchi, A"
Registros recuperados: 2
Data/hora: 07/06/2024 07:34:35

Evolution of bacterial communities precipitating carbonate, in Mediterranean lagoons water and sediment: Study on experimental conditions.
Provedor de dados: 5
Autores: Castanier, S; Maurin, A; Bianchi, A.
To determine if carbonate precipitation is an active or passive bacterial phenomena, factorial analysis has been realized with 880 strains isolated from different samples of sea water and muds kept in various conditions of incubation. Results show the existence of a strong anti-correlation between carbonate precipitation and amino-acid ammonification. Carbonate precipitation is not a passive phenomena linked with amino-acid ammonification.
Tipo: Text
Palavras-chave: MED; Biogeochemistry; Mathematical analysis; Water analysis; Sediments; Amino acids; Bacteria; Coastal lagoons; Chemical precipitation; Calcium carbonates.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-956.pdf

Microbial activity at the deep water sediment boundary layer in two highly productive systems in the Western Mediterranean: the Almeria-Oran front and the Malaga upwelling
Provedor de dados: 5
Autores: Bianchi, A; Calafat, A; De Wit, R; Garcin, J; Tholosan, O; Cacho, I; Canals, M; Fabres, J; Grout, H; Masque, P; Sanchez-cabeza, Ja; Sempere, R.
Microbiological and biogeochemical studies were carried out in sediments and near bottom waters in the upwelling area off the Malaga coast and in the Almeria-Oran frontal zone. In these nutrient-rich conditions, metabolic activity is potentially limited by oxygen availability through the sediment depth. In the surficial sediments of the frontal zone, however, oxygen penetrated to a depth of 4 cm, allowing oxic mineralisation processes to occur throughout the layer. In the surficial sediments of the upwelling area, oxygen penetration was limited to the top 2.5 cm, leading to anoxic conditions. Glutamate respiration and global oxygen uptake rates were clearly higher than in the frontal zone. In the superficial sediments of the frontal zone, bacteria were...
Tipo: Text
Palavras-chave: Taux de minéralisation; Sédiments; Eaux profondes; Méditerranée occidentale; Bacteria; Mineralisation rate; Sediments; Deep-sea; Western Mediterranean.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43298/43034.pdf