s:1330:"TI Improving community-based carbon-stock monitoring: lessons from Batu Majang, East Kalimantan, Indonesia AU Rahayu, S. AU Widayati A AB The Reducing Emissions from Deforestation and Degradation plus conservation (REDD+) mechanism that was introduced under the United Nations Framework Convention on Climate Change has involved reducing emissions from deforestation and forest degradation, conserving forest carbon-stock, enhancing forest carbon-stock, practising sustainable forest management and conserving biodiversity (Brofeldt et al 2014). Communities that surround a forest and interact with it on a daily basis, who well understand the condition of the forest and who receive benefits from it are potential contributors to REDD+ activities.Batu Majang Village, located in an enclave of a private concession forest in Mahakam Hulu District in East Kalimantan Province, Indonesia, proposed to conserve a patch of about 500 ha of forest as ‘customary forest’ owing to the environmental services provided by the forest, such as water, timber, medicines and erosion control. This customary forest, thus, also became a strategic area for conserving carbon stock and the biodiversity of indigenous or endemic commercial timber and animal species, such as the hornbill, a cultural and ecological symbol of Kalimantan. ";