The Importance of Maintaining a Proper Database on Forest Restoration Program for Orangutans in Borneo

Abstract

Problem statement: The lowland forest of Sabah is the most important h abitat for orangutans and pygmy elephants. This is shown in the WWF-Malaysia's elephant tracking programme in which satellite-based Global Position System (GP S) collar devices are used to monitor their movement and the range of their habitats, as well a s an aerial survey on orangutan's nest is performed to determine the spatial distribution pattern. We o bserved the activities of both species and we found that these species stay inside lowland forests with on flat ground or with gentle slopes, below 500 m elevation, which is mostly covered by natural fores t. The density of orangutan's population was estimated to be higher in a certain location in nat ural lowland forests where the soils are more ferti le. A suitable long term habitat for both species is loca ted in the lowland dipterocarp forests. However, mo st of the pristine habitats in the lowland area have b een converted into other land use activities such a s a large scale plantation. This is due to the fact tha t most of the lowland forests are facing a continuo us degradation process that will decrease its commerci al value when it comes to generating revenue to the state government. As a result, the efforts to resto re the forest are very vital. Approach: This study described the technical and biological aspects in t he forest restoration planning, prioritizing, implementation and monitoring process, integrated with the data on habitat utilization by orangutan in lowland degraded dipterocarp forest. Key habitats f or orangutans were identified, forest condition wer e mapped and field works are carried out using a plot sampling technique to identify the diversity and density of the forest (current and potential), in o rder to support the forest restoration planning. A proper database on forest restoration and tree main tenance planning had been developed to enable the monitoring process. Results: This study outlined some of the findings that incl ude the main challenges that were faced in the forest restoration programme in North Ulu Segama (NUS), which could be used as lessons and guideline in the future. Conclusion: A long term monitoring programme is important in order to have a successful forest restoration progr amme as well as to have the opportunity to study th e impact of this restoration on the behavior of orang utan as a result of their adaptation to the new for est structure.