Estimation du stock d’huîtres sauvages et en élevage dans le Bassin d’Arcachon

Within the framework of the mission of creation of a “Parc Naturel Marin" in the Bay of Arcachon, estimations of the oysters stocks in the Bay were realized in 2011 by the engineering consulting firm Océanide, in association with the “Agence des Aires Marines Protégées”, the French Research Institute for the Exploitation of the Sea ( IFREMER) - Station of Arcachon and the Departmental Direction of Territories and the Sea of Gironde – “Délégation à la Mer et au Littoral (DLM)”. The evaluation of the stock of cultivated oysters was made from production statements of the shellfish farmers, collected in 2010 by the DML. The estimation of the stocks of wild oysters was made using a stratified two degrees field sampling. Finally, 82 500 t of oysters are present on the totality of the Bay of Arcachon, dividing up between 16 600 t of cultivated oysters (in 2009) (annual production about 6 000 t) and 65 000 t of wild oysters (in June, 2011).