Chimpanzees in the Eastern Part of the Nimba Mountains Biosphere Reserve: Gouéla II and Déré Forest

  • Nicolas Granier
Part of the Primatology Monographs book series


The eastern part of the Nimba Mountains Biosphere Reserve is constituted of two strictly protected areas: the whole Guinean southern slope of the massif, called Gouéla II, and the Déré Forest, which are separated by 10 km of buffer zone consisting of lowlands with a high level of human encroachment. A behavioral and ecological study of nonhabituated chimpanzees (Pan troglodytes verus) was initiated in this area to provide information on their habitat use and ranging patterns. Data on chimpanzee presence were systematically and periodically collected between 2006 and 2008 using a combination of three survey methods. In Gouéla II, 75% of the indicators of chimpanzee presence occurred above 700 m elevation, in altitude forest, galleries, and secondary vegetation habitats. In Déré, consequent to an unclear protection status, the forest was logged in 1999–2000, and then cultivators swarmed in. Today, the Déré Forest is critically damaged, and only one chimpanzee track was observed during 29 days of survey. By offering new information on Nimba chimpanzees, this work also targets conservation perspectives of the species and its unique environment.


Core Area Secondary Vegetation Chimpanzee Community Anthropic Pressure Diana Monkey 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



I wish to thank all staff of the Direction Nationale de la Recherche Scientifique et Technologique (DNRST) and the Institut de Recherche Environnementale de Bossou (IREB) for their help in conducting this research, especially their respective directors, Tamba Tagbino and Makan Kourouma. I am particularly grateful to the guides and local authorities of N’Zo subprefecture: Michel Zogbélémou, Jacques Bamba, Leonard Gamaleu, Mamadou Zogbélémou, Mamadou Sylla, and Korfou Diallo, for their indispensable help and dedication. Special thanks are due to Tetsuro Matsuzawa and Marie-Claude Huynen for their support and advice, as well as Marie-Claude and Laura Martinez for their comments on the present manuscript. The research was financially supported by grants from the Japanese Ministry of Education, Culture, Sports, Science and Technology, the Japanese Ministry of Environment, and the Japanese Society for the Promotion of Science to T. Matsuzawa, and by a grant from IUCN/SSC Primate Specialist Group, Great Ape Emergency Conservation Action Fund, to N. Granier.


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Copyright information

© Springer 2011

Authors and Affiliations

  1. 1.Behavioral Biology Unit, Department of Environmental SciencesUniversity of LiègeLiègeBelgium

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