Gia Lai province has the highest primate diversity with ten species, but we lack distribution information for most species such as Annamese silvered langur and Black-shanked douc langur and new species of gibbon Nomascus annamensis that found in 2010. Vietnam noted that Gia Lai has three douc species (P. nigripes, P. cinerea and P. nemaeus) based on skull anatomy, interviews and observations. With the presence of these four endangered leaf monkeys Gia Lai is one of critical conservation importance.

We really want to confirm distribution of primate’s species which focus on leaf monkeys and gibbon; to estimate population status of each colobine species and gibbon at each area; to document threats to primates in that region; last is built up the distribution map of primates. This project will contribute directly to conservation of primates in Gia Lai by providing distribution maps, population status information, and present threats for each species in both Chu Prong and A Yun Pa. In addition, we also will work with forest rangers and technical staff of the PNRs in order to help improve their capacity by training them to conduct primate surveys and monitoring techniques. All results will be shared with the management board of PNR. Thus, these activities will make a lasting contribution to nature conservation by improving knowledge about these endangered primates and realistic conservation planning for these protected areas

Project is conducted on two location include A Yun Pa and Chu Prong proposed Nature Reserve in Gia Lai province, Vietnam in one year. We will apply semi-structure interview methods in order to collecting data on threat to primates, population change over time and allowed us assess threat for each taxa. Standard transects census methods using pre-existing trails is used for inventory population size for each taxa in each region. Beside transects, point count based on vocalization of gibbon is applied to estimate population size of gibbon.