From Bossou to the Forests of Liberia

  • Gaku Ohashi
Part of the Primatology Monographs book series


Bossou is located only a few kilometers away from the national border between Guinea and Liberia. The forest extends across the national border, and Bossou chimpanzees (Pan troglodytes verus) occasionally range into Liberia. We started surveys in Liberia in 2006, and confirmed the presence of chimpanzees in at least three areas: Bonla, Nimba Mountains, and Kpayee-Lepula. Chimpanzees in Liberia face various threats. Meanwhile, the Manon people are widely distributed around this region. By understanding their traditional beliefs, we may be able to find a good way for promoting coexistence between human and chimpanzees in this transboundary region.


Home Range National Border Pineapple Fruit Lucky Strike Chimpanzee Behavior 
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 the Direction Nationale de la Recherche Scientifique et Technologique (DNRST), and the Institut de Recherche Environnementale de Bossou (IREB), for permission to conduct research in Guinea. I am also grateful for the support of the Superintendent of Nimba County for his warm welcome and kind support of my preliminary work in Liberia. I also thank Prof. Tetsuro Matsuzawa for his supervision. Special thanks are due to the local assistants – Boniface Zogbila, Pascal Goumy, Jiles Doré, Paquilé Chérif, and Henry Gbéregbé – for their hard work in the field. The research was financially supported by grants from the Ministry of Education, Culture, Sports, Science and Technology (nos. 12002009 and 16002001) to Prof. T. Matsuzawa, a grant of JSPS AA Science Platform Program to Prof. T. Furuichi, and the Global Environment Research Fund (F-061) of the Ministry of the Environment, Japan, to Dr. T. Nishida.


  1. Granier N, Huynen MC, Matsuzawa T (2007a) Preliminary surveys of chimpanzees in Gouéla area and Déré forest, the Nimba Mountain Biosphere Reserve, Republic of Guinea. Pan Africa News 14:20–22Google Scholar
  2. Granier N, Kolié CI, Soumah AG, Kpoghomou E (2007b) Inventaire des mammifères du Mont Nimba. In: Kourouma M, Moloumou P, Mahomi CG, Soropogui PE (eds) La diversité biologique de la Réserve de Biosphère des Monts Nimba. Programme de Conservation de la Biodiversité des Monts Nimba. CSE-RBMN Report, Gbakoré, pp 20–47Google Scholar
  3. Humle T, Matsuzawa T (2001) Behavioural diversity among the wild chimpanzee populations of Bossou and neighbouring areas, Guinea and Côte d'Ivoire, West Africa. Folia Primatol 72:57–68PubMedCrossRefGoogle Scholar
  4. Humle T, Matsuzawa T (2004) Oil palm use by adjacent communities of chimpanzees at Bossou and Nimba Mountains, West Africa. Int J Primatol 25:551–581CrossRefGoogle Scholar
  5. Koops K, Matsuzawa T (2006) Hand clapping by a chimpanzee in the Nimba Mountains, Guinea, West Africa. Pan Africa News 13:19–21Google Scholar
  6. Koops K, Humle T, Sterck EH, Matsuzawa T (2007) Ground-nesting by the chimpanzees of the Nimba Mountains, Guinea: environmentally or socially determined? Am J Primatol 69:407–419PubMedCrossRefGoogle Scholar
  7. Kortlandt A, Holzhaus E (1987) New data on the use of stone tools by chimpanzees in Guinea and Liberia. Primates 28:473–496CrossRefGoogle Scholar
  8. Matsuzawa T (2006a) Bossou: 30 years. Pan Africa News 13:16–19Google Scholar
  9. Matsuzawa T, Yamakoshi G (1996) Comparison of chimpanzee material culture between Bossou and Nimba, West Africa. In: Russon AE, Bard KA, Parker S (eds) Reaching into thought: the mind of the great apes. Cambridge University Press, Cambridge, pp 211–232Google Scholar
  10. Ohashi G (2006a) Behavioral repertoire of tool use in the wild chimpanzees at Bossou. In: Matsuzawa T, Tomonaga M, Tanaka M (eds) Cognitive development in chimpanzees. Springer, Tokyo, pp 439–451CrossRefGoogle Scholar
  11. Ohashi G (2006b) Bossou chimpanzees crossed the national border of Guinea into Liberia. Pan Africa News 13:10–12Google Scholar
  12. Shimada MK (2000) A Survey of Nimba Mountain, West Africa from three routes: confirmed new habitat and ant-catching wands use of chimpanzees. Pan Africa News 7:7–10Google Scholar
  13. Sugiyama Y, Koman J (1979a) Social structure and dynamics of wild chimpanzees at Bossou, Guinea. Primates 20:323–339CrossRefGoogle Scholar
  14. Sugiyama Y, Koman J (1979b) Tool-using and making behavior in wild chimpanzees at Bossou, Guinea. Primates 20:513–524CrossRefGoogle Scholar

Copyright information

© Springer 2011

Authors and Affiliations

  1. 1.Japan Monkey CentreInuyamaJapan

Personalised recommendations