Dramatic decline in orang-utan numbers, in the Leuser Ecosystem, northern Sumatra

ORYX

Volumn 35, Issue 1, 2001, Pages 14-25

  Van Schaik, Carel P ^a   Monk, Kathryn A ^b   Yarrow Robertson, J M ^c  

^a DUKE UNIVERSITY   (United States)

^b Research Monitoring and Information Division   (Indonesia)

^c Leuser Management Unit   (Indonesia)

Author keywords

Conversion; Fragmentation; Illegal logging; Orang utan; Plantations; Selective logging; Sumatra

Indexed keywords

CONSERVATION STATUS; HABITAT LOSS; LOGGING; POPULATION DECLINE; PRIMATE;

INDONESIA;

EID: 0035156758     PISSN: 00306053     EISSN: None     Source Type: Journal    
DOI: 10.1046/j.1365-3008.2001.00150.x     Document Type: Article

References (27)

1. The orang-utan (Pongo pygmaeus): Behavioural ecology and conservation status: A tale of two islands
2. Why are orang utans so rare in the highlands? Altitudinal changes in a Sumatran forest
3. The orang-utan in Niah cave pre-history
4. Distribution and evolution of the orang utan, Pongo pygmaeus (Hoppius)
5. Orang-utan life history and vortex analysis
6. The behaviour and ecology of wild orang-utans (Pongo pygmaeus)
7. Species survival plan for the orang-utan
8. Surveying orang-utan populations by counting nests from a helicopter: A pilot survey in Sabah
9. The behavioural ecology of Sumateran orang-utans in logged and unlogged forest
10. How to save the mysterious 'man of the rain forest'?
11. Causal factors underlying the dramatic decline of the Sumatran orang-utan
12. Does the orang-utan have a future? Population status in Gunung Leuser National Park
13. Strangling figs: Their role in the forest
14. The socioecology of fission-fusion sociality in orang-utans
15. Spatial variation in the structure and litterfall of a Sumatran rain forest
16. Population estimates and habitat preferences of orang-utans based on line transects of nests
17. Estimates of orang-utan distribution and status in Sumatra
18. Manufacture and use of tools in wild Sumatran orang-utans
19. Geographic variation in tool use on Neesia fruits in orang-utans
20. Orang-utan home-range size and its determinants in a Sumatran swamp forest
21. Ecological constraints on the grouping of wild orang-utans (Pongo pygmaeus) in the Gunung Leuser National Park, Sumatra, Indonesia
22. Behavioural changes in wild male and female Sumatran orang-utans (Pongo pygmaeus abelii) during and following a resident male take-over
23. Energetics and foraging in Macaca fascicularis and Pongo pygmaeus and a selective advantage of large body size in the orang-utan