Declining orangutan populations in and around Danau Sentarum
This paper presents the combined results of two separate orangutan survey efforts and an assessment of land cover change analysis in the Danau Sentarum, National Park (DNSP), West Kalimantan, Indonesia These studies show that the DNSP and surrounding areas contain high numbers of orangutans, making these populations of global significance to the species survival in the wild. However, in the park and its surrounding areas, 40,339 ha habitat disappeared between 1973 and 1990, and 32,586 ha between 1990 and 1997.