www.batangtoru.org | Research Station
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Since 2006, YEL has been operating a Forest Monitoring Station in the Batang Toru forests, which has become a centre for forest research in North Sumatra.


The primary activities of the station’s staff has been the habituation and observation of the local orangutans (and also siamangs and gibbons), recording weather (such as rainfall and temperature), monitoring tree phenology, camera trapping, maintenance of research trails, and surveys of other biodiversity.

Several students from the University of North Sumatra (USU) and the Bogor Institute of Agriculture (IPB) have conducted thesis research in the Batang Toru forests, and every year YEL provides sponsorship for 3 to 5 students to conduct research in the Batang Toru forests.

Besides research into the local orangutan population, the siamangs (Symphalangus syndactylus) and agile gibbons (Hylobates agilis) have been studied by a PhD student from Illinois Unviersity, Matthew Nowak. Several other students have also conducted research into amphibians and bats in Batang Toru.