The 136,000 hectares (530sqmi) reserve is located in the central Mayombe mountain chain about 50km (31mi) from the Atlantic coast.[1]
The Mayombe has a hot, humid climate, combining tropical and oceanic traits. A lowland Guineo-Congolese rainforest dominates the biosphere reserve together with savanna vegetation. The area is in the transition zone between semi-deciduous and evergreen forest. Of special scientific interest are various types of forest communities recolonising old areas of forest exploitation.[1]
The "Mayombe Project" aimed at improving the communication between local stakeholders, managers and scientists. In 1991, a survey was issued to determine perceptions and expectations of the biosphere reserve inhabitants. Research has been carried out on the impact of gold extraction on the biosphere reserve.[1]