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	Provedor de dados 5 (2) Autor Chauvaud, Laurent (1) Dunbar, Robert (1) Guarini, Jean-marc (1) Jean, Frédéric (1) Kawahata, H (1) Lorrain, Anne (1) Mucciarone, David (1) Ohta, H (1) Paulet, Yves (1) Thouzeau, Gérard (1) Yamamuro, M (1) Mais... Palavra-chave Variation saisonnière (2) Brittany (1) Calcite (1) Carbon cycle (1) Coquille (1) Cycle du carbone (1) Daily varition (1) Estimation (1) Flux de particules (1) Isotope (1) Pacifique occidental (1) Paleoenvironment (1) Paleotempérature (1) Pecten Maximus (1) Seasonality (1) Shell (1) Sinking particle fluxes (1) Strie croissance (1) Température eau (1) Variation verticale (1) Mais... Tipo do documento Text (2) Ano 2005 (1) 1998 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Shell of the Great Scallop Pecten maximus as a high-frequency archive of paleoenvironmental changes - art. no. Q08001 5 Chauvaud, Laurent; Lorrain, Anne; Dunbar, Robert; Paulet, Yves; Thouzeau, Gérard; Jean, Frédéric; Guarini, Jean-marc; Mucciarone, David. We investigate the environmental and biological controls on oxygen isotope ratios in the shells of modern Pecten maximus bivalves collected alive in the Bay of Brest (France). Seasonal delta(18)O profiles, obtained by drilling the daily calcite ridges deposited at the surface of the left valve, were compared with in situ measurements of temperature and salinity. We show that P. maximus delta(18)O values accurately track seasonal variations in bottom water temperature. Shell growth rate has no significant effect on shell delta(18)O values. Our study demonstrates that daily variations in water temperature can be reconstructed within about 0.5 degrees C. Temperatures estimated with the paleotemperature equation established in this study were compared with... Tipo: Text Palavras-chave: Pecten Maximus; Brittany; Paleoenvironment; Estimation; Daily varition; Water temperature; Isotope; Calcite; Shell; Ëecten maximus; Paleotempérature; Variation saisonnière; Température eau; Strie croissance; Isotope; Coquille. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-643.pdf Seasonal and vertical variations of sinking particle fluxes in the West Caroline Basin 5 Kawahata, H; Yamamuro, M; Ohta, H. A sediment trap experiment was carried out in the West Caroline Basin, located in the equatorial western Pacific between influences of the Asian monsoon and the open ocean. Annual mass flux at the shallow trap at Site 1 was 57.10 g m(-2)yr(-1). Generally, the higher flux of organic matter was associated with higher activities of biogenic opal-producing and carbonate-producing plankton communities. In addition, as the organic matter content increases, the organic carbon/carbonate carbon ratio shows a tendency to increase. Carbonate-producing plankton was predominant during periods 1 and 3 (May to July and November to the beginning of December), which could be due to limited silica supply to the euphotic zone. On the other hand, surface sea water was more... Tipo: Text Palavras-chave: Variation saisonnière; Variation verticale; Flux de particules; Pacifique occidental; Cycle du carbone; Seasonality; Vertical variations; Sinking particle fluxes; Western Pacific; Carbon cycle. Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43655/43219.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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