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Etude du phosphore dans les sédiments ostréicoles du bassin des Chasses des Sables d'Olonne ArchiMer
Feuillet, Michèle.
Tipo: Text Palavras-chave: Biscay bay; Oyster culture zone; Marine sediment; Seawater; Phosphorus.
Ano: 1971 URL: http://archimer.ifremer.fr/doc/1971/publication-2240.pdf
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Influence des Peintures Antisalissures a Base d'Organostanniques sur la Calcification de la Coquille de l'Huitre Crassostrea gigas. ArchiMer
Alzieu, Claude; Heral, Maurice; Thibaud, Yves; Dardignac, Marie-jose; Feuillet, Michèle.
Experiments in oyster-breeding areas where oyster Crassostrea gigas suffers from anomalies of calcification, show an obvious correlation between the importance of the malformation of shells and the vicinity of port areas where a great number of boats usually stay. Organotin compounds contained in antifouling paints, and more precisely Tributyltin fluoride (TBTF) induce, in experimental environment, similar anomalies to those observed in natural environment. The amounts of total tin in the tissues of oysters living in the vicinity of spots where organotin products are brought in, can reach high values, though they appear to decrease rapidly whereas the environmental contamination lessens. The authors suggest that results of organotin upon the mechanisms of...
Tipo: Text Palavras-chave: Crassostrea gigas; Pollution effects; Toxicity; Calcification; Fouling control; Paints.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/publication-1898.pdf
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Les dosages de calcium : méthodes et intercalibrations ArchiMer
Heral, Maurice; Feuillet, Michèle; Razet, Daniel.
Les dosages du calcium dissous dans l'eau du bassin de Marennes-Oléron ont mis en évidence un déficit calcique supérieur à 30% en hiver. En mai, période de forte pousse de la coquille de l'huître, on a constaté en certain secteur du bassin que 70% du calcium est consommé. Le dosage du calcium s'est de plus révélé très utile pour dégrossir les problèmes de malformations de coquilles et pour les relier avec les défauts de calcifications et avec l'apparition de poches gélatineuses. C'est pour ces raisons que nous avons étudiés les différentes méthodes de dosages du calcium et organisé une intercalibration.
Tipo: Text
Ano: 1980 URL: http://archimer.ifremer.fr/doc/00388/49886/50447.pdf
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Relations entre les eaux interstitielles des fonds sedimentaires ostreicoles et le milieu hydrobiologique. Le Bassin des Chasses des Sables d'Olonne ArchiMer
Feuillet, Michèle.
Extensive data have been obtained on oyster-bearing sediments and interstitial and overlying waters in the Bassin des Chasses, les Sables d'Olonne, which will enable a scale of suitability of waters for oyster-culture to be compiled. The studies concerned: I. Hydrology, including fresh water inflow: II. Salinity; alkaline reserve; Na, K, Ca and Mg levels: III. Circulation and distribution of nitrogenous substances: IV. The N sub(2) cycle: V.P. Nitrogenous and phosphorus nutrients are regenerated continuously in the sediments and replenish the free water.
Tipo: Text Palavras-chave: Bisacy bay; Organic matter; Nitrogen concentration; Phosphorus; Marine sediment; Hydrobiology; Oyster culture zone.
Ano: 1971 URL: http://archimer.ifremer.fr/doc/1971/publication-2239.pdf
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