PESCA-JALONS-PORNIC. Etude sédimentaire de l'estran conchylicole en Baie de Bourgneuf

Plans for dredging the Noéveillard port in Pornic in early 1996 sparked great concern among oyster farmers in the Bernerie and Moutiers sectors of Bourgneuf Bay. Although many precautions were taken and imposed during the dredging operations, the Loire-Atlantique prefecture called upon Ifremer to set up a sedimentological study in immediate and proximate areas in order to have hard data on hand if accidental silting up, natural or not, were to occur. In the course of various meetings, Ifremer always expressed reservation on how sedimentological data could be interpreted. In fact, additional sediment input from dredging, compared with that from the natural flux of particulate matter in suspension, appears to be low and is therefore difficult to quantify....