The management of common resources requires the effective involvement of all stakeholders, in order to avoid all forms of opposition. The Ziama massif, the subject of our study, has been a classified forest since 1942. It is located in the south-eastern part of Guinea and is one of five forests in the region. Among these forests, only the Ziama massif represents a level of degradation of 27%. Considered the weakest of all Guinea’s forests, the Ziama massif was classified as a biosphere reserve by UNESCO in 1981. Given its ecological wealth, concerted management of its resources to maintain its status as a climatic regulator is an imperative. Except that sincethe classification to the present day, it has been an area of conflict between various players, including the State, local communities and non-natives. The Guinean state, having inherited the management methods imposed by the colonial power, continues to seek unilateral management of the forest’s resources, while excluding the local communities. As a result, conflicts are multiplying.