JAKARTA — A palm oil company is ramping up its destruction of forests that are home to critically endangered orangutans in a UNESCO Biosphere Reserve on the island of Borneo, according to satellite imagery and government sources. In October 2025, Mongabay reported that PT Equator Sumber Rezeki (ESR) had clear-cut 1,376 hectares (3,400 acres) of forest between January and August 2025, based on satellite image analysis by Satya Bumi, an Indonesian environmental nonprofit. Prior to that, ESR had cleared no more than 195 hectares (482 acres) of forest. The company is operating within a 15,000-hectare (37,000-acre) oil palm plantation concession in Kapuas Hulu, a district in Indonesia’s West Kalimantan province. Now, an updated analysis by Satya Bumi shows that ESR further accelerated its rainforest clearing in the final quarter of 2025, razing an additional 1,492 hectares (3,687 acres) of forest from October to December. It has now cleared a total of 3,063 hectares (7,569 acres) of forest within its concession, according to Satya Bumi. Map that shows deforestation in palm oil company PT Equator Sumber Rezeki’s concession in Kapuas Hulu, West Kalimantan, Indonesia. ESR’s concession overlaps with part of the Labian–Leboyan watershed, a wildlife corridor connecting Betung Kerihun and Danau Sentarum national parks — two of the last strongholds for the critically endangered Bornean orangutan (Pongo pygmaeus). The corridor and parks form part of the UNESCO-designated Betung Kerihun–Danau Sentarum Biosphere Reserve, whose forests sustain hundreds of species of wildlife, including sun bears, hornbills and giant rafflesia flowers. They also provide…This article was originally published on Mongabay

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