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The Sumatran orangutan (Pongo abelii) is one of the three species of orangutans. Critically endangered , and found only in the north of the Indonesian island of Sumatra , it is rarer than the Bornean orangutan but more common than the recently identified Tapanuli orangutan , also found in Sumatra.
There are three types of orangutans left in the world. The Bornean, the Tapanuli and the Sumatran. It’s believed that there are only 14,000 individual Sumatran orangutans left in the wild.
The number of Bornean orangutans has decreased by more than 60% in 60 years, and the population of the Sumatran orangutan has decreased by 80% in the last 75 years. [2] It is estimated that between 1999 and 2015, the population of Bornean orangutans has decreased by over 100,000. [2]
A 2017 genome study found that the Bornean and Tapanuli orangutans diverged from Sumatran orangutans about 3.4 mya, and from each other around 2.4 mya. Millions of years ago, orangutans travelled from mainland Asia to Sumatra and then Borneo as the islands were connected by land bridges during the recent glacial periods when sea levels were ...
Orangutans are arboreal, meaning they primarily live in the trees. There ... There are three sub-species of orangutans, including the Bornean orangutan, the Sumatran orangutan, and the Tapanuli ...
With just around 9,200 remaining in the wild, Sumatran orangutans are a critically endangered species.
Young orangutan in the national park Mount Leuser Forest. Gunung Leuser National Park is one of the two remaining habitats for Sumatran orangutans (Pongo abelii). [3] In 1971, Herman Rijksen established the Ketambe Research Station, a specially designated research area for the orangutan. [4]
The IUCN notes that the "key Sumatran Orangutan forest habitat was reduced by 60% of its area between 1985 and 2007." Experts say the reduction "will continue as forests within the species ...