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A latitudinal gradient of seasonal temperature variation recorded in oyster shells from the coastal waters of France and The Netherlands ArchiMer
Lartaud, Franck; Emmanuel, Laurent; De Rafelis, Marc; Ropert, Michel; Labourdette, Nathalie; Richardson, Christopher A.; Renard, Maurice.
Cathodoluminescence (CL) microscopy of the foliated calcite shell hinge sections of live-collected oyster Crassostrea gigas collected at seven locations along a latitudinal gradient from the Netherlands in the North Sea to the Atlantic coast of France, revealed variations in luminescence that were attributable to seasonal variations in calcification of the hinge. Photomicrographs of hinge sections and luminescence profiles were analyzed to define a micro-sampling strategy that was adopted to drill the hinge samples to determine their isotopic composition. Reconstructed seasonal seawater temperatures determined from the stable oxygen isotope (delta O-18) composition along growth profiles from 32 oyster shell hinges showed distinct seasonal isotopic cycles...
Tipo: Text Palavras-chave: Seasonality; Palaeotemperatures; Stable isotopes; Cathodoluminescence; Crassostrea gigas; Mollusk shells.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/2010/publication-7296.pdf
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