Primates

, Volume 47, Issue 1, pp 65–73 | Cite as

Counting primates for conservation: primate surveys in Uganda

Original Article

Abstract

Primate census techniques have been developed over the past 35–40 years yet there is still some confusion and great variation in the methods used. This precludes comparisons between sites where different techniques have been used. This paper discusses the variations between the methods that seem to be practiced currently and then describes a census of primates in the forests of western Uganda. Primate density and biomass varied greatly between forests as well as within forests and this is probably related to food availability. Chimpanzee (Pan troglodytes) density was strongly correlated with nest encounter rates from reconnaissance walks in the forest. This result can be used to estimate chimpanzee density in forests where it is difficult to survey this species (e.g., due to security reasons). A total of 4,980 chimpanzee was estimated for Uganda which is higher than previously guessed, but still of conservation concern. Only four forests had more than 500 individuals which gives concern for long-term population viability.

Keywords

Biomass Chimpanzee Primate census Tropical forest Uganda 

Notes

Acknowledgements

Much of the work described here was funded by the Wildlife Conservation Society and the Jane Goodall Institute. Particular donors included the Daniel K. Thorne Foundation, The John D. and Catherine T. MacArthur Foundation, US Fish and Wildlife Great Ape Conservation Fund, Crane Bank, Total, Uganda Breweries, Cleveland Metroparks Zoological Society, Berggorilla and Regenwald Direkthilfe, and UNDP/GEF through WWF. We are grateful to the Uganda Wildlife Authority and Uganda Forest Department and their many staff who supported these surveys. We would also like to thank Professor John Oates and an anonymous reviewer for comments made on drafts of this paper.

References

  1. Balcomb SR, Chapman CA, Wrangham RW (2000) Relationship between chimpanzee (Pan troglodytes) density and large, fleshy-fruit tree density: conservation implications. Am J Primatol 51:197–203CrossRefPubMedGoogle Scholar
  2. Basabose K, Yamagiwa J (1997) Predation on mammals by chimpanzees in the montane forest of Kahuzi, Zaire. Primates 38:45–55Google Scholar
  3. Boesch C, Boesch-Achermann H (2000) The chimpanzees of the Tai forest: behavioural ecology and evolution. Oxford University Press, Oxford, p 316Google Scholar
  4. Buckland ST, Anderson DR, Burnham KP, Laake JL (1993) Distance sampling: estimating abundance of biological populations. Chapman and Hall, LondonGoogle Scholar
  5. Butynski TM (1990) Comparative ecology of blue monkeys (Cercopithecus mitis) in high and low density subpopulations. Ecol Monogr 60:1–26Google Scholar
  6. Chapman CA, Chapman LJ (1999) Implications of small scale variation in ecological conditions for the diet and density of red colobus monkeys. Primates 40:215–231Google Scholar
  7. Chapman CA, Lambert JE (2000) Habitat alteration and the conservation of primates: case study of the Kibale National Park, Uganda. Am J Primatol 50:169–185CrossRefPubMedGoogle Scholar
  8. Cords M (1986) Interspecific and intraspecific variation in diet of two forest guenons, Cercopithecus ascanius and C.mitis. J Anim Ecol 55:811–827Google Scholar
  9. Edroma E, Rosen N, Miller P (eds) (1997) Conserving the chimpanzees of Uganda: population and habitat viability analysis for Pan troglodytes schweinfurthii. IUCN/SSC Conservation Breeding Specialist Group, Apple Valley, Minn.Google Scholar
  10. Fashing PJ, Cords M (2000) Diurnal primate densities and biomass in the Kakamega forest: an evaluation of census methods and a comparison with other forests. Am J Primatol 50:139–152CrossRefPubMedGoogle Scholar
  11. Ghiglieri MP (1984) The chimpanzees of Kibale forest: a field study of ecology and social structure. Columbia University Press, New YorkGoogle Scholar
  12. Harcourt AH, Fossey D (1981) The Virunga gorillas: decline of an island population. Afr J Ecol 19: 83–97Google Scholar
  13. Hashimoto C (1995) Population census of the chimpanzees in the Kalinzu forest, Uganda: comparison between methods with nest counts. Primates 36:477–488Google Scholar
  14. Laake JL, Buckland ST, Anderson DR, Burnham KP (1994) Distance user’s guide V2.1. Colorado Cooperative Fish and Wildlife Research Unit, Colorado State University, Fort Collins, p 84Google Scholar
  15. Mcneilage A, Plumptre AJ, Brock-Doyle A, Vedder A (1998) Bwindi impenetrable National Park, Uganda, gorilla and large mammal census, 1997. WCS Working Paper 14, p 52Google Scholar
  16. Mitani JC, Watts DP (1999) Demographic influences on the hunting behavior of chimpanzees. Am J Phys Anthropol 109:439–454CrossRefPubMedGoogle Scholar
  17. Oates JF, Whitesides GH, Davies AG, Waterman PG, Green SM, Dasilva GL, Mole S (1990) Determinants of variation in tropical forest primate biomass: new evidence from West Africa. Ecology 71:328–343Google Scholar
  18. Plumptre AJ (2000) Monitoring mammal populations with line transect techniques in African forests. J Appl Ecol 37:356–368CrossRefGoogle Scholar
  19. Plumptre AJ, Reynolds V (1996). Censusing chimpanzees in the Budongo forest, Uganda. Int J Primatol 17:85–99Google Scholar
  20. Plumptre AJ, Reynolds V (1997) Nesting behavior of chimpanzees: implications for censuses. Int J Primatol 18:475–485CrossRefGoogle Scholar
  21. Plumptre AJ, Williamson EA (2001) Conservation-oriented research in the Virunga region. In: Robbins MM, Sicotte P, Stewart KJ (eds) Mountain gorillas: three decades of research at Karisoke. Cambridge University Press, Cambridge, pp 361–389Google Scholar
  22. Plumptre AJ, Reynolds V, Bakuneeta C (1997) The effects of selective logging in monodominant tropical forests on biodiversity. Unpublished report to ODA on project R6057, LondonGoogle Scholar
  23. Plumptre AJ, Cox D, Mugume S (2003) The status of chimpanzees in Uganda. Albertine Rift Tech Rep Ser No. 2, p 70Google Scholar
  24. Stanford CB (1998) Chimpanzee and red colobus. Harvard University Press, Cambridge, MA, p 296Google Scholar
  25. Struhsaker TT (1975) The red colobus monkey. The University of Chicago Press, ChicagoGoogle Scholar
  26. Struhsaker TT (1981) Census methods for estimating densities. In: Techniques for the study of primate population ecology. National Academy Press, Washington, pp 36–80Google Scholar
  27. Struhsaker TT (1997) Ecology of an African rain forest. University Press of Florida, GainesvilleGoogle Scholar
  28. Struhsaker TT, Leakey M (1990) Prey selectivity by crowned hawk eagles on monkeys in the Kibale Forest, Uganda. Behav Ecol Sociobiol 26:435–443CrossRefGoogle Scholar
  29. Telecki G (1989) Population status of wild chimpanzees (Pan troglodytes) and threats to survival. In: Heltne PG, Marquardt LA (eds) Understanding chimpanzees. Harvard University Press, Cambridge, Mass.Google Scholar
  30. Tutin CEG, Fernandez M (1984) Nationwide census of gorilla (Gorilla gorilla) and chimpanzee (Pan troglodytes) populations in Gabon. Am J Primatol 6:313–336CrossRefGoogle Scholar
  31. Walsh PD, White LJT (1999) What will it take to monitor forest elephants?. Conserv Biol 13:1194–1202CrossRefGoogle Scholar
  32. Whitesides GH, Oates JF, Green sm, Kluberdanz RP (1988) Estimating primate densities from transects in a West African rainforest: a comparison of techniques. J Anim Ecol 57:345–367Google Scholar

Copyright information

© Japan Monkey Centre and Springer-Verlag 2005

Authors and Affiliations

  1. 1.Wildlife Conservation SocietyKampalaUganda
  2. 2.Jane Goodall InstituteEntebbeUganda

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