The Tapanuli orangutan was only discovered six months ago — and it’s already under threat of extinction from human development. Only 800 Tapanuli orangutans live in the wild today — however state-run Chinese company Sinohydro plans to construct a dam in northern Sumatra that will result in the deforestation of the orangutan’s habitat. If completed, the dam could pose an existential danger to the animals.

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A forest stands next to a deforested area

Researchers fear that the construction of the 510 megawatt dam in the fragile Batang Toru ecosystem will result in the extinction of certain communities within the already vulnerable Tapanuli population. “Building the dam means chopping the orangutan population in half,” Borneo Futures director and orangutan expert Erik Meijaard told The Guardian. “You end up with two smaller populations, and these will have much reduced chances of survival, because a small population is more likely to go extinct than a large one.”

Although Sinohydro did not include the orangutan in its environmental management plan, the Indonesian government approved the project. “The impact will not just be the destruction of the habitat where they want to build the dam and roads, tunnel, electricity lines,” scientist Gabriella Fredriksson explained to the Guardian, “but it will cause the extinction of two of the three sub-populations, and in addition create access and destroy the most important habitat of the only viable population left.”

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“The Indonesian government needs to respect its own laws,” Meijaard said. “Orangutans are protected species. The Indonesian law clearly prohibits any actions that harm a protected species or its nests. It is obvious that the hydrodam is harming a protected species, so why does the government allow this?” Instead of building a dam, researcher Serge Wich suggested that the government pursue a geothermal project farther north from the orangutan habitat. According to Wich, this proposed project could yield one gigawatt of power, significantly more than the dam. The newly discovered orangutans are suffering under a broader extinction crisis, in which the large mammals of Sumatra, such as the Sumatran tiger, the Sumatran rhino and the Sumatran elephant have become critically endangered.

Via The Guardian

Images via Tim Laman and Sumatran Orangutan Conservation Programme