Although a significant progress has been made in the exploration of the Malagasy biodiversity and in the advancement of knowledge of Madagascar flora and fauna, much remains to do and to discover within some remaining forest blocks. The available information on the natural history and geographical distribution of most species are still incomplete. It is in this perspective that the members regularly conduct biological investigations each year across the island. These investigations contribute to the identification of areas of biological importance. The scientific data will allow setting up basic information that can be served as tools for decision making for actions to be undertaken in the context of conservation and management.