Impact of Cultural Practices on the individual and Collective Economic Performances in Shellfish Farming: the Case of Oyster Farming in Baie Des Veys

摘要

The access regulation within the shellfish farming sector in France is based on a co-management systemudrelying on both a national legislation, defining the general access conditions to maritime public grounds,udand regional regulation systems, called “Regional Structural Schemes”. The latter specify the farmingudrules in cooperation with the administration, scientific and professional representatives. This regulationudsystem, which aims at managing the common primary resources at the scale of a shellfish farming basin,udis under review in the baie des Veys, on the Normandy coastline. In this context, biological modelling isudused to assess the carrying capacity of the bay and to provide tools for modifying the RSS in a moreudsustainable way. Another objective of the study is to shift to bio-economic modelling, implying for theudmodel to take into account extra technical and economical parameters. A specific survey has thereforeudbeen carried out for collecting detailed information on the cultural practices of the oyster farmingudcompanies, and for analysing the links with their structural characteristics and performance indicators, inudterms of productivity and output. This article reviews the context of oyster farming in the baie des Veysudfrom the environmental, socio-economic and institutional point of view. After the presentation of theudmethodology used for the survey, its results are analysed and a synthesis is made, leading to theudidentification of the main farming technical profiles. At this stage of the study, only theoreticaluddevelopments on modelling are considered and outlooks in terms of collective management measures areuddiscussed.