Law Association 1901 created in 1986, the Conservatoire d’espaces naturelles de Bourgogne ensures the management of natural sites and contributes to the preservation and enhancement of the biodiversity and natural heritage of Burgundy. Main activities of CENB: Scientific knowledge through the production of inventories and monitoring of the Burgundy natural heritage and ecological management documents of natural areas -Preservation of remarkable biodiversity through regulatory tools for nature protection — Management of natural sites by carrying out maintenance and restoration of environments — Animation of networks and regional action plans in favour of natural environments and species — Valorisation of the Burgundy natural heritage to the public and the political and economic decision-making bodies privileged the preservation of Burgundy natural environments (mares, lawns...) or of species with a strong stake in the management of the countryside by means of partnerships with the whole of the area, and the management of the area by the local authorities. The CENB is equal