Dr. Cheryl Knott and research staff identify a botanical sample collected during an orangutan follow.

Dr. Cheryl Knott and research staff identify a botanical sample collected during an orangutan follow.

Since 1994 Dr. Cheryl Knott has been leading scientific research on the orangutan population in the Gunung Palung National Park under the Gunung Palung Orangutan Project, one of the longest running studies of wild orangutans in existence. Scientific research plays a critical role in the conservation of Gunung Palung’s orangutans because it is essential to monitor the population’s size, health, and habitat use in order to a) understand what conservation approaches will be most useful and b) assess the impact of these conservation actions. Our research program using cutting edge scientific techniques to investigate orangutan reproduction, behavior, social organization and physiology within an ecological context. Detailed behavioral data are collected in addition to urine samples from which hormones can be measured. All orangutan foods are collected and processed to analyze the caloric and nutrient composition of the orangutan diet. The project is also investigating broader issues related to great ape and human evolution. The project has relevance for understanding the limits on the reproductive potential of orangutan populations and is important for conserving this endangered species.

Research staff photograph leaf samples to add to the project's reference collection

Research staff photograph leaf samples to add to the project’s reference collection



The Cabang Panti research site in Gunung Palung National Park is one of just a handful of long-term research sites for orangutan biology and behavior. We monitor a study population of over 80 individuals living in this rich rainforest habitat. Because the continued survival of the approximately 2,500 orangutans living within the National Park depends on the conservation of this habitat, Cabang Panti is an important site for both international orangutan research and rainforest conservation.  In fact, the Gunung Palung Orangutan Conservation Program (GPOCP) grew out of the original Gunung Palung Orangutan Project, with the goal of building support for orangutan conservation with local officials and communities around the park. For more detailed information on the main research questions and our amazing staff, volunteers and field assistants, please see our Research Objectives, Research Staff, and By the Numbers pages.


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