Abstract
Abstract The location of one of the largest oyster centres in France in the Marennes‐Oléron Bay instigated the study of two toxic metals: cadmium and mercury, most likely originated from the Charente Estuary. Analyses of particulate metallic inputs in sediments (60 kg Cd and 35 kg Hg/yr) and radiochronólogical data showed that outputs from the Charente river (20 kg Cd and 12 kg Hg/yr) alone could not account for the high metallic contents recorded in the bay. This metallic input could be due to the presence of an exterior source to the bay.
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