sumatran orangutan population

Sumatran Orangutan (Pongo abelii) Rainforests mostly in the northern part of the island of Sumatra, Indonesia. Orangutan population biology, life history, and conservation. While they are tenaciously resourceful, orangutan population is in decline due to the devastation of their habitats. With no more than 800 individuals, the Tapanuli Orangutan is the most endangered of the great apes. Sumatran Orangutans have longer facial hair and closer social bonds than their Bornean cousins. Estimates put their population at 57,000 - 100,000 Bornean, less than 14,000 Sumatran and fewer than 800 Tapanuli orangutans. Orangutans, 2008. The Sabangau River population is the biggest surviving population of this species. Until now, the total Sumatran orangutan population was put at 6,600 individuals, based on data from 2004. image copyright Serge Wich. Orangutans that have been confiscated from unlawful commerce or as pets are being reintroduced to Bukit Tigapuluh National Park. Today, two distinct species are found on the islands of Borneo and Sumatra, respectively. The orangutan is the only great ape found in Asia, and historically is thought to have once ranged across Indochina. Sumatran orangutans live in rainforests, swampy forests, and mountain forests, at altitudes lower than 5,000 feet (1,500 m). Only three populations include more than 1,000 orangutans. image caption Forest loss in Sumatra. Robert Lacy Of the 9 present populations of Sumatran orangutans, solely seven have prospects of long-term viability, every with an estimated 250 or more people. Most of the current population is found in … Of the nine existing populations of Sumatran orangutans, only seven have prospects of long-term viability (survival), with at least 250 or more individuals. Orangutans are rarely, if ever, found south of the Simpang Kanan River on Sumatra's west side or south of the Asahan River on the east side. The Bornean orangutan is divided into three further sub-species. As of 2017, approximately 82.5% of the Sumatran orangutan population was strictly confined to the northernmost tip of the island, in the Aceh Province. A similar fate has met the Sumatran orangutan whose population have declined by 80% in the past 75 years. Both species have experienced sharp population declines. https://www.sumatranorangutan.org/sumatran-orangutans/distribution Most of the population is restricted to a small range in the Leuser ecosystem. It appears to have been isolated from all other Sumatran populations for at least 10.000 to 20.000 years. A century ago there were probably more than 230,000 orangutans in total, but the Bornean orangutan is now estimated at about 104,700 based on updated geographic range (Endangered) and the Sumatran about 7,500 (Critically Endangered). Their habitats m ) and fewer than 800 Tapanuli orangutans the only great found! Ape found in Asia, and mountain forests, at altitudes lower than feet! 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