Abstract
The orangutan population and habitat variability analysis (PHVA) workshop stated that the population and the distribution of orangutans decreased very much over the past 20 years. The author has studied the ecology of orangutans in Kutai national park, East Kalimantan, Indonesia since 1983. The situation of orangutans has changed since the great forest fires and droughts and the coal mine operation. The distribution of orangutans in East Kalimantan is reported and status and the future plans for conservation of orangutans are discussed in this paper.
