The Mentawai Islands Regency are a chain of about seventy islands and islets approximately 150 kilometres off the western coast of Sumatra in Indonesia. They cover 6,033.76 km2 and had a population of 76,173 at the 2010 Census and 87,623 at the 2020 Census. Siberut at 3,838.25 square kilometres is the largest of the islands. The other major islands are Sipura, North Pagai, and South Pagai. The islands lie off the Sumatran coast, across the Mentawai Strait. The indigenous inhabitants of the islands are known as the Mentawai people. The Mentawai Islands have become a noted destination for surfing, with over 40 boats offering surf charters to international guests.
Siberut is the largest and northernmost of the Mentawai Islands, located 150 kilometres west of Sumatra in the Indian Ocean. It covers an area of 3,838.25 km2 including smaller offshore islands, and had a population of 35,091 at the 2010 Census and 40,220 at the 2020 Census. A part of Indonesia, the island is the most important home for the Mentawai people. The western half of the island was set aside as the Siberut National Park in 1993. Much of the island is covered with rainforest, but is subject to commercial logging.
The surilis are a group of Old World monkeys in the genus Presbytis. They live in the Thai-Malay Peninsula, on Sumatra, Borneo, Java and smaller nearby islands. Besides surili, the common names for the monkeys in the genus also often use the terms "langur" or "leaf monkey."
The pig-tailed langur, monotypic in genus Simias, is a large Old World monkey, endemic to several small islands off the coast of Sumatra in Indonesia. Its face is black, its fur is black-brown and it has a relatively short tail. It is a diurnal species, feeding in the rainforest canopy on leaves, and to a lesser extent, fruit and berries. Little is known of its natural history, but it is heavily hunted, its populations have been declining rapidly and the International Union for Conservation of Nature has assessed its conservation status as being "critically endangered". It has been included on a list of the World's 25 Most Endangered Primates.
Siberut National Park comprises 1,905 km2 (47%) of the island of Siberut in the Mentawai Islands of West Sumatra, Indonesia. The whole island including the national park is part of the World Network of Biosphere Reserves.
The Pagai Island macaque, also known as the Pagai macaque or Bokkoi, is an Old World monkey endemic to the Mentawai Islands off the west coast of Sumatra. It is listed as critically endangered on the IUCN Red List due to its ever-shrinking habitat. Macaca pagensis formerly included the overall darker Siberut macaque as a subspecies, but this arrangement is polyphyletic, leading to the two being classified as separate species. Both were formerly considered subspecies of the southern pig-tailed macaque.
The Mentawai macaque or Mentawai island macaque may refer to:
The Pagai spiny rat is a species of rodent in the family Muridae. It is found only in the Mentawai Islands of Indonesia, on South Pagai, North Pagai, Sipora, and Siberut islands.
The Mentawai Archipelago rat is a species of rodent in the family Muridae. It is found only in the Mentawai Islands of Indonesia, on the islands of Siberut, Sipora, Pagai Utara, and Pagai Selatan.
The Mentawai langur is a species of primate in the family Cercopithecidae. It is endemic to the Mentawai Islands in Indonesia. Its natural habitat is subtropical or tropical dry forests. The Siberut langur was formerly considered a subspecies of the Mentawai langur.
The Mentawi flying squirrel is a species of rodent in the family Sciuridae. It is endemic to Indonesia where it is only known from the Mentawai Islands. Its natural habitat is lowland tropical primary forest below 500 m (1,600 ft) above sea level. It is threatened by habitat loss.
The fraternal squirrel is a species of rodent in the family Sciuridae. It is endemic to Indonesia, found only in the Mentawai Archipelago, located off the west coast of Sumatra.
The Siberut macaque is a vulnerable species of macaque, which is endemic to Siberut Island in Indonesia. It was formerly considered conspecific with the Pagai Island macaque which is overall paler in color, but this arrangement was polyphyletic. Both were formerly considered subspecies of the southern pig-tailed macaque.
The Borneo lowland rain forests is an ecoregion, within the tropical and subtropical moist broadleaf forests biome, of the large island of Borneo in Southeast Asia. It supports approximately 15,000 plant species, 380 bird species and several mammal species. The Borneo lowland rain forests is diminishing due to logging, hunting and conversion to commercial land use.
The Sulawesi montane rain forests is a tropical moist forest ecoregion in Indonesia. It includes the highlands of Sulawesi.
