Program No.18-059

Community ecology of primates in Danum Valley Conservation Area

Goro Hanya

21st December, 2006 - 6th January, 2007
Place of visit: Danum Valley Conservation Area

I have started a project on community ecology of diurnal primates in the Danum Valley Conservation Area in Sabah, Malaysian Borneo. In 2006, I conducted field research three times in September, October-November and December. While I am not there, my Malaysian assistants continue data sampling.

From the beginning of the project, I have conducted primate census, orangutan nest census and fallen fruit census using the trails of the total length 9.9 km. In addition, I follow a group of red leaf monkeys, which can be encountered most often and are easy to follow to collect preliminary data on the diet and ranging.

I stayed in the Danum Valley for 8 days from 22-29 December 2006, and followed a red leaf monkey group for 27 hours for 27 hours. This time, I started systematic behavioral data collection by scan sampling. Every 10 minutes, I recorded activity (resting/feeding/moving/grooming), height of the animal and height of the tree. When they eat foods, I collected food samples for later identification.

The group was quite habituated, and their ranging was not so fast, so it was not difficult to follow them. On day, I follow the group for 9 hours and 40 minutes. I would like to continue data collection and clarify the basic ecological characteristics, such as diet and activity budget.

On 3 January 2007, I made briefing on the progress report of the project at Sabah Economy Planning Unit for the renewal of research pass.. Although I showed data of only September and October, they admitted that the project is going well. I also talked with Dr. Henry Bernard at Institute for Tropical Biology and Conservation, University Malaysia Sabah on the present status of the project. On 5 January, I visited Federal Economy Planning Unit at Kuala Lumpur and applied the renewal of the research pass.

Red-leaf monkey

Food of red-leaf monkeys

HOPE Project<>