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Report: Indonesian floods killed at least 7% orangutans, a rare species.

A 'new report' released on Wednesday shows that deadly floods and landslides in Indonesia last year wiped out at least 7% of Tapanuli orangutans, which are critically endangered. Floods and landslides caused by a cyclone in Sumatra last year killed at least 1,200 and destroyed around 300,000. Environmental groups blamed the deforestation on Sumatra for the severity of the damage.

The report cited a'survey of the western block in the forest which is home to the majority of the 800 primates.

The report was a joint study of Borneo Futures in Brunei, World Weather Attribution, and Liverpool John Moores University. It did not cover the rest of the forest. This means that the death toll may have been even higher.

Satellite images of damage to Batang Toru's West Block and historical records about the orangutan populations there were used to derive the findings.

The study found that climate change caused by humans has increased extreme rainfall in the Malacca Strait area, which puts the habitat of the Tapanuli Orangutan at greater risk.

Erik Meijaard, the lead author, from Borneo Futures said that the heavy rains soaked up the soil to the point where large areas of hillsides in the primary forest collapsed into fast-moving landslides.

He said: "If you are caught as an orangutan... If anything falls at high speeds, your chances of survival will be minimal. This is a very real concern."

This level of?loss is?substantial' for a species that has such a low total population. Meijaard said that when combined with other pressures, such as habitat destruction and conflict between humans and wildlife, it makes it even more urgent to implement and properly resource a coordinated species action plan.

Panut Hadisiswoyo is another researcher who urged the Indonesian Government to work with researchers and NGOs to prevent the further decline in orangutan populations.

"We can minimise poaching and hunting, then we'll probably be able to stabilise the population," he said. He added that all parties should pay attention to poor land use, which contributes to the decline in the population. (Reporting and editing by Gibran Pshimam, David Stanway and Ananda Teresia)

(source: Reuters)