{"id":3023,"date":"2025-12-12T14:03:58","date_gmt":"2025-12-12T14:03:58","guid":{"rendered":"https:\/\/microvibenews.com\/?p=3023"},"modified":"2025-12-12T14:03:58","modified_gmt":"2025-12-12T14:03:58","slug":"indonesia-floods-were-extinction-level-disturbance-for-rare-orangutan-species-indonesia","status":"publish","type":"post","link":"https:\/\/microvibenews.com\/?p=3023","title":{"rendered":"Indonesia floods were \u2018extinction level\u2019 disturbance for rare orangutan species | Indonesia"},"content":{"rendered":"

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Indonesia\u2019s deadly flooding was an \u201cextinction-level disturbance\u201d for the world\u2019s rarest great ape, the Tapanuli orangutan, causing catastrophic damage to its habitat and survival prospects, scientists warned on Friday.<\/p>\n

Only scientifically classified as a species in 2017, Tapanulis are incredibly rare, with fewer than 800 left in the wild, confined to a small range in part of Indonesia\u2019s Sumatra.<\/p>\n

One dead suspected Tapanuli orangutan has already been found in the region, conservationists told AFP.<\/p>\n

\u201cThe loss of even a single orangutan is a devastating blow to the survival of the species,\u201d said Panut Hadisiswoyo, founder and chair of the Orangutan Information Centre in Indonesia.<\/p>\n

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Analysis of satellite imagery combined with knowledge of the Tapanuli\u2019s range suggests last month\u2019s flooding, which killed nearly 1,000 people, may also have devastated wildlife in the Batang Toru region.<\/p>\n

The scientists focused on the area known as the West Block, the most densely populated of three known Tapanuli habitats, home to an estimated 581 Tapanulis before the disaster.<\/p>\n

\u201cWe think that between 6 and 11% of orangutans were likely killed,\u201d said Erik Meijaard, a longtime orangutan conservationist.<\/p>\n

\u201cAny kind of adult mortality that exceeds 1%, you\u2019re driving the species to extinction, irrespective of how big the population is at the start,\u201d he told AFP.<\/p>\n

But Tapanulis have such a small population and range to begin with that they are especially vulnerable, he added.<\/p>\n

Satellite imagery shows huge gashes in the mountainous landscape, some of which extend for more than a kilometre and are nearly 100 metres wide, Meijaard said. The tide of mud, trees and water toppling down hillsides would have carried away everything in its path, including other wildlife such as elephants.<\/p>\n

<\/svg><\/span>Devastation left by the flooding in Indonesia.<\/span> Photograph: AFP\/Getty Images<\/figcaption><\/figure>\n

David Gaveau, a remote sensing expert and founder of the conservation startup The Tree Map, said he was flabbergasted by the before-and-after comparison of the region.<\/p>\n

\u201cI have never seen anything like this before during my 20 years of monitoring deforestation in Indonesia with satellites,\u201d he told AFP.<\/p>\n

\u2018Fragile and sensitive\u2019<\/h2>\n

The devastation means remaining Tapanulis will be even more vulnerable, with sources of food and shelter now washed away.<\/p>\n

Over 9% of the West Block habitat may have been destroyed, the group of scientists estimated.<\/p>\n

In a draft paper shared with AFP, they warned the flooding represents an \u201cextinction-level disturbance\u201d for Tapanulis.<\/p>\n

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Environmentalists have long campaigned against industrial activity in Batang Toru, particularly a hydroelectric dam and goldmine.<\/p>\n

<\/svg><\/span>A Tapanuli in the Batang Toru forests.<\/span> Photograph: Nature Picture Library\/Alamy<\/figcaption><\/figure>\n

The highland homes currently inhabited by tapanulis are not their preferred habitat, but it is where remaining orangutans have been pushed by development elsewhere.<\/p>\n

Earlier this month, Indonesia\u2019s government said industrial plantations, hydropower and gold mining in the region had \u201ccontributed significantly to the pressure on the environment\u201d. It announced a suspension on operating permits for all projects in the region pending a review.<\/p>\n

The government, along with environmentalists, has also said deforestation contributed to the scale of the flooding disaster.<\/p>\n

A study published on Thursday also said climate change-linked heavier rainfall and warmer seas, which can turbocharge storms played a role.<\/p>\n

The orangutan experts urged an immediate halt to development that will damage the remaining Tapanuli habitat, and an immediate survey of the region.<\/p>\n

They also back the expansion of protected areas and work to restore lowland forests.<\/p>\n

Hadisiswoyo said the region had become eerily quiet after the landslides.<\/p>\n

\u201cThis fragile and sensitive habitat in West Block must be fully protected by halting all habitat-damaging development,\u201d he told AFP.<\/p>\n<\/div>\n

#Indonesia #floods #extinction #level #disturbance #rare #orangutan #species #Indonesia<\/p>\n","protected":false},"excerpt":{"rendered":"

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