Aerial surveys give new estimates for orangutans in Sabah, Malaysia

PLoS Biology

Volumn 3, Issue 1, 2005, Pages

  Ancrenaz, Marc ^a   Gimenez, Olivier ^b,c   Ambu, Laurentius ^d   Ancrenaz, Karine ^a   Andau, Patrick ^d   Goossens, Benoît ^e   Payne, John ^f   Sawang, Azri ^a   Tuuga, Augustine ^d   Lackman Ancrenaz, Isabelle ^a,g  

^a Kinabatangan Orangutan Conserv P   (Malaysia)

^b CENTRE D ECOLOGIE FONCTIONNELLE ET EVOLUTIVE   (France)

^c UNIV GRENOBLE ALPES   (France)

^d SABAH WILDLIFE DEPARTMENT   (Malaysia)

^e CARDIFF UNIVERSITY   (United Kingdom)

^f World Wide Fund for Nature Malaysia   (Malaysia)

^g Pittsburgh Zoo   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

FOREST; GEOGRAPHIC DISTRIBUTION; MALAYSIA; NONHUMAN; ORANG UTAN; POPULATION DENSITY; POPULATION DYNAMICS; POPULATION SIZE; REVIEW; SPECIES EXTINCTION; ANIMAL; ANTHROPOIDEA; ARTICLE; ECOSYSTEM; ENVIRONMENT; INFORMATION PROCESSING;

PONGO PYGMAEUS;

ANIMALS; DATA COLLECTION; ECOSYSTEM; ENVIRONMENT; MALAYSIA; PONGO PYGMAEUS; POPULATION DENSITY;

EID: 20044364167     PISSN: 15449173     EISSN: None     Source Type: Journal    
DOI: 10.1371/journal.pbio.0030003     Document Type: Review

References (37)

1. Rijksen HD, Meijaard E (1999) Our vanishing relative. Dordrecht: Kluwer Academic. 480 p.
2. van Schaik CP, Monk KA, Robertson JMY (2001) Dramatic decline in orangutan numbers in the Leuser Ecosystem, Northern Sumatra. Oryx 35: 14-25.
3. Sugardjito J (1995) Conservation of orangutans: Threats and prospects. In: Nadler RD, Galdikas BFM, Sheeran LK, Rosen N, editors. The neglected ape New York: Plenum Press. pp 45-49.
4. Tutin CEG, Fernandez M (1984) Nationwide census of gorilla and chimpanzee populations in Gabon. Am J Primatol 6: 313-336.
5. van Schaik CP, Priatna A, Priatna D (1995) Population estimates and habitat preferences of orangutans (Pongo pygmaeus) based on line transects of nests. In: Nadler RD, Galdikas BFM, Sheeran LK, Rosen N, editors. The neglected ape New York: Plenum Press. pp 129-147.
6. Ancrenaz M, Goossens B, Gimenez O, Sawang A, Lackman-Ancrenaz I (2004) Determination of ape distribution and population size using ground and aerial surveys: A case study with orang-utans in lower Kinabatangan, Sabah, Malaysia. Anim Conserv 7: 375-385.
7. Payne J (1988) Orang-utan conservation in Sabah. Kuala Lumpur: WWF-Malaysia International, Report 3759. 137 p.
8. McMorrow J, Talip MA (2001) Decline of forest area in Sabah, Malaysia: Relationship to state policies, land code and land capability. Global Environ Change 11: 217-230.
9. Payne J (1987) Surveying orang-utan populations by counting nests from a helicopter: A pilot survey in Sabah. Primate Conserv 8: 92-103.
10. Kleine M, Heuveldop J (1993) A management planning concept for sustained yield of tropical forests in Sabah, Malaysia. For Ecol Manage 61: 277-297.
11. Buckland ST, Anderson DR, Burnham KP, Laake JL (1993) Distance sampling: Estimating abundance of biological populations. London: Chapman and Hall. 446 p.
12. Burnham KP, Anderson DR, Laake JL (1980) Estimation of density from line transect sampling of biological populations. Wildl Monogr 72: 1-202.
13. Thomas L, Laake JL, Derry JF, Buckland ST, Borchers DL, et al. (1998) Distance 3.5. Research Unit for Wildlife Population Assessment, University of St. Andrews, UK. Available: http://www.ruwpa.st-and.ac.uk/ distance. Accessed 22 October 2004.
14. Crain BR (1998) Some comments on line transect grouped data analysis. Ecol Model 109: 243-249.
15. Burnham KP, Anderson DR (2002) Model selection and multimodel interference: A practical information-theoretic approach. 2nd ed. New York: Springer-Verlag. 496 p.
16. Seber GAF (1977) Linear regression analysis. New York: Wiley. 512 p.
17. Johnson AE, Knott CD, Pamungkas B, Pasaribu M, Marshall AJ (2005) A survey of orang-utan (Pongo pygmaeus pygmaeus) population in and around Gunung Palung National Park, West Kalimantan, Indonesia based on nest counts. Biol. Conserv 121: 495-507.
18. Ancrenaz M, Calaque R, Lackman-Ancrenaz I (2004) Orang-utan nesting behavior in disturbed forest of Sabah, Malaysia: Implications for nest census. Int J Primatol 25: 983-1000.
19. Buij R, Wich SA, Lubis AH, Sterck EHM (2003) Seasonal movements in Sumatran orang-utan (Pongo pygmaeus abelii) and consequences for conservation. Biol Conserv 107: 83-87.
20. Seber GAF (1982) The estimation of animal abundance and related parameters. 2nd ed. London: Griffin. 654 p.
21. Manly B (1997) Randomization, bootstrap, and Monte Carlo methods in biology. 2nd ed. London: Chapman and Hall. 299 p.
22. Norton-Griffiths M (1978) Counting animals. Nairobi: African Wildlife Foundation. 134 p.
23. Singleton I (2000) Ranging behaviour and seasonal movements of Sumatran orangutans in swamp forests [thesis]. Canterbury (United Kingdom): University of Kent at Canterbury. 196 p.
24. Groves CP (2001) Primate taxonomy. Washington, DC: Smithsonian Institution Press. 350 p.
25. Plumptre AJ, Reynolds V (1994) The effects of selective logging on the primate populations in the Budongo Forest Reserve, Uganda. J Appl Ecol 31: 631-641.
26. Johns AD (1992) Vertebrate response to selective logging: Implications for the design of logging systems. Philos Trans R Soc Lond B Biol Sci 335: 437-442.
27. Plumptre AJ, Johns AG (2001) Changes in primate communities following logging disturbance. In: Fimbel RA, Grajal A, Robinson JG, editors. The cutting edge: Conserving wildlife in logged tropical forests New York: Columbia University Press. pp 71-92.
28. Bennett EL, Robinson JG (2000) Hunting of wildlife in tropical forests: Implications for biodiversity and forest people. Washington, DC: World Bank Environment Department, Biodiversity Series. 42 p.
29. Johns AD, Skorupa P (1987) Responses of rain-forest primates to habitat disturbance: A review. Int J Primatol 8: 157-187.
30. McKinnon JR (1974) The behavior and ecology of wild orangutans (Pongo pygmaeus). Anim Behav 22: 3-74.
31. Delgado RA, van Schaik CP (2000) The behavioral ecology and conservation of the orang-utan: A tale of two islands. Evol Anthropol 9: 201-218.
32. Felton AM, Engstrom LM, Felton A, Knott CD (2003) Orangutan population density, forest structure and fruit availability in hand-logged and unlogged peat swamp forests in West Kalimantan, Indonesia. Biol Conserv 114: 91-101.
33. Morrogh-Bernard H, Husson S, Page SE, Rieley JO (2003) Population status of the Bornean orang-utan (Pongo pygmaeus) in the Sebangau peat swamp forest, Central Kalimantan, Indonesia. Biol Conserv 110: 141-152.
34. Rao M, van Schaik CP (1997) The behavioral ecology of Sumatran orangutans in logged and unlogged forest. Trop Biodivers 4: 173-185.
35. Singleton I, van Schaik CP (2002) The social organization of a population of Sumatran orang-utans. Folia Primatol 73: 1-20.
36. Mulongoy KJ, Chape S (2004) Protected areas and biodiversity: An overview of key issues. Nairobi: UNEP/CBD Publications. 52 p.
37. Curran LM, Trigg SN, McDonald AK, Astiani D, Hardiono YM, et al. (2004) Lowland forest loss in protected areas of Indonesian Borneo. Science 303: 1000-1003.