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For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Riccardo Pravettoni, UNEP/GRID-Arendal)
Hillshade generated from SRTM 90m DEM available from the CGIAR website (http://srtm.csi.cgiar.org/).
Sumatran orangutan distribution shapefile prepared by Singleton and Wich and based on Wich et al. 2008 with unpublished data added.
Forest layer interpreted by PanEco/ YEL, 2010 from Landsat 5 TM, 2009 and Landsat ETM 7 filled, 2010.
Hunting data obtained from Socio-Economic surveys (2811 respondents in 377 localities) conducted between 2007 and 2009 around the Batang Toru forests by PanEco/YEL and partners (in prep.).
Hockings, K. and Humle, T. 2009. Best practice guidelines for the pre-vention of conflict between humans and great apes. IUCN/SSC Primate Specialist Group (PSG), Gland, Switzerland
Nijman, V. 2009. An assessment of trade in gibbons and orangutans in Sumatra, Indonesia. TRAFFIC Southeast Asia, Petaling Jaya, Malaysia. van Noordwijk, M. and Minang, P.A. 2009. If we cannot define it, we cannot save it. ETFRN NEWS 50: 5-10
Campbell-Smith G., Simanjorang H.V., Leader-Williams N. and Linkie M. 2010. Local attitudes and perceptions towards crop-raiding by orangu-tans (Pongo abelii) and other non-human primates in northern Sumatra, Indonesia. Am J Primatol 72: 866-876.
Uploaded on Wednesday 01 Feb 2012
Hunting of orangutans
Riccardo Pravettoni, UNEP/GRID-Arendal
Orangutans are also still regularly killed or captured. This occurs for three main reasons: first, even today some people still hunt orangutans for food, most notably in the non-Muslim parts of North Sumatra. Second, when orangutans enter farms or plantations at the for-est edge, for example to feed on fruit trees or other crops, they are often shot or otherwise killed, and any surviving infant eventually ends up in trade or as someone’s illegal pet (Hockings and
Humle 2009). Third, at times infants may be captured to order for the pet trade, meaning that hunters will deliberately seek out adult females and kill them solely to obtain their infants, regard-less of whether they are in the forest or raiding crops (Nijman 2009; Campbell-Smith et al. 2010).