| Gonystylus | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malvales |
| Family: | Thymelaeaceae |
| Subfamily: | Octolepidoideae |
| Genus: | Gonystylus Teijsmann & Binnendijk |
| Species | |
See text | |
Gonystylus is a southeast Asian genus of about 30 species of hardwood trees also known as ramin, melawis (Malay) and ramin telur (Sarawak).
Ramin is native to Malaysia, Singapore, Indonesia, Brunei, the Philippines, and Papua New Guinea, with the highest species diversity on Borneo. It is related to Arnhemia , Deltaria , Lethedon and Solmsia . [1]
Ramin is a medium-sized tree, attaining a height of about 24 m (80 ft) with a straight, clear (branch-free), unbuttressed bole about 18 m (60 ft) long and 60 cm (2 ft) in diameter. The trees are slow-growing, occurring mainly in swamp forests. [2]
As of February 2014 [update] The Plant List recognises 32 accepted species: [3]
The white wood, harder and lighter in colour than many other hardwoods, is often used in children's furniture, window blinds, dowels, handles, blinds, and decorative mouldings.
Because of its straight, clear grain, nowadays it is commonly used in Venice for the construction of oars.
However, over-exploitation has led to all species of ramin being listed as endangered species, [4] particularly[ clarification needed ] in Indonesia[ citation needed ] and Malaysia.[ citation needed ] An estimated 90% of ramin in recent international trade is illegally logged.[ citation needed ]As the ramin forests themselves come under attack, the fragile ecosystems they support are also at risk. These trees provide the main habitat for other priority species such as the orangutan and the Indochinese, Sumatran and Malayan tigers. [5] [6]
Sumatra's peat swamp forests are an important habitat for ramin trees. The Sumatran ramin tree species are CITES protected species. The logging and trade of ramin has been illegal in Indonesia since 2001. Internationally, any illegal trade in Indonesian ramin is prohibited under the UN Convention on International Trade in Endangered Species (CITES). Indonesian government maps show that 800,000ha (28%) of Sumatra's peat swamp forest was cleared between 2003 and 2009. Some 22% of this clearance was in areas currently allocated to APP's log suppliers. [7]
The siamang is an arboreal, black-furred gibbon native to the forests of Indonesia, Malaysia, and Thailand. The largest of the gibbons, the siamang can be twice the size of other gibbons, reaching 1 m (3.3 ft) in height, and weighing up to 14 kg (31 lb). It is the only species in the genus Symphalangus. Fossils of siamangs date back to the Middle Pleistocene.
The Sumatran tiger is a population of Panthera tigris sondaica on the Indonesian island of Sumatra. It is the only surviving tiger population in the Sunda Islands, where the Bali and Javan tigers are extinct.
The Thymelaeaceae are a cosmopolitan family of flowering plants composed of 50 genera and 898 species. It was established in 1789 by Antoine Laurent de Jussieu. The Thymelaeaceae are mostly trees and shrubs, with a few vines and herbaceous plants.
Peat swamp forests are tropical moist forests where waterlogged soil prevents dead leaves and wood from fully decomposing. Over time, this creates a thick layer of acidic peat. Large areas of these forests are being logged at high rates.
The Sumatran orangutan 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. Its common name is based on two separate local words, "orang" and "hutan" ("forest"), derived from Malay, and translates as 'person of the forest'.
Way Kambas National Park is a national park covering 1,300 km2 (500 sq mi) in Lampung province of southern Sumatra, Indonesia. It consists of swamp forest and lowland rain forest, mostly of secondary growth as result of extensive logging in the 1960s and 1970s. Despite decreasing populations, the park still has a few critically endangered Sumatran tigers, Sumatran elephants and Sumatran rhinoceroses. It also hosts over 400 bird species.
Asia Pulp & Paper (APP) is an Indonesian pulp and paper company based in Jakarta, Indonesia. One of the largest pulp and paper companies in the world, it was founded as Tjiwi Kimia by Eka Tjipta Widjaja in 1972. Asia Pulp & Paper is a subsidiary of Sinar Mas Group and was officially formed in 1994 when Sinar combined its paper and pulp operations from Tjiwi Kimia and PT Inda Kiat Pulp & Paper.
Rubberwood is a light-colored medium-density tropical hardwood obtained from the Pará rubber tree, usually from trees grown in rubber plantations. Rubberwood is commonly advertised as an "environmentally friendly" wood, as it makes use of plantation trees that have already served a useful function.
The Leuser Ecosystem is an area of forest located in the provinces of Aceh and North Sumatra on the island of Sumatra in Indonesia. Covering more than 2.6 million hectares it is one of the richest expanses of tropical rain forest in Southeast Asia and is the last place on earth where the Sumatran elephant, rhino, tiger and orangutan are found within one area. It has one of the world's richest yet least-known forest systems, and its vegetation is an important source of Earth's oxygen.
Bukit Tigapuluh National Park - The Thirty Hills - is a 143,223 hectare National Park in eastern Sumatra, consisting primarily of tropical lowland forest, largely in Riau province, with a smaller part of 33,000 ha in Jambi province. It is famous as one of the last refuges of endangered species such as the Sumatran orangutan, Sumatran tiger, Sumatran elephant, and Asian tapir, as well as many endangered bird species. It forms part of the Tesso Nilo Complex biodiversity hotspot. The Park is inhabited by the indigenous peoples of the Orang Rimba and Talang Mamak tribes.
Deforestation in Indonesia involves the long-term loss of forests and foliage across much of the country; it has had massive environmental and social impacts. Indonesia is home to some of the most biologically diverse forests in the world and ranks third in number of species behind Brazil and the Democratic Republic of Congo.
The Berbak National Park in Sumatra island, Jambi province of Indonesia, forms part of the largest undisturbed swamp forest in southeastern Asia, and the peat swamp forest with the greatest number of palm species. Protected since 1935 under Dutch colonial law and later declared a national park, it has been also recognised as a wetland of international importance.
Sembilang National Park is a national park covering 2,051 km2 along the east coast of Sumatra, Indonesia. The park is dominated by swamps as peat forests, like the neighbouring Berbak National Park, and both parks are Ramsar wetlands of international importance. The park is considered to have the most complex shorebird community in the world, with 213 species recorded, and supports the world's largest breeding colony of milky storks. From Palembang to the Sembilang National Park needs one hour drive plus one and a half hour by boat and then one hour overland.
Deforestation in Borneo has taken place on an industrial scale since the 1960s. Borneo, the third largest island in the world, divided between Indonesia, Malaysia and Brunei, was once covered by dense tropical and subtropical rainforests.
Padang-Sugihan Wildlife Reserve is a Wildlife Sanctuary in Sumatra, Indonesia. The park has a total area of 750 km2, and is located in the province of South Sumatra. Nearly all peat forest within the reserve has been destroyed in the decades since the reserve was created, due to illegal logging and large forest fires.
Giam Siak Kecil-Bukit Batu Bioreserve is a peatland area in Riau Province of Sumatra, covering 705,271 hectares (2,723.07 sq mi) and large parts of Bengkalis Regency and Siak Regency. It is a declared UNESCO Man and the Biosphere Reserve and supports a sustainable timber industry. It is home to two wildlife reserves, namely Giam Siak Wildlife Reserve and Bukit Batu Wildlife Reserve; flagship species include the Sumatran elephant and Sumatran tiger.
Gonystylus forbesii is a tree in the family Thymelaeaceae.
The Sumatran freshwater swamp forests ecoregion covers disconnected patches of freshwater swamp forest on the alluvial plains of the island of Sumatra in Indonesia. The different locations vary greatly in their vegetation and wildlife habitat depending on the local soil types. The land has been greatly disturbed by human conversion to agriculture and illegal logging in recent years. Several of the sectors support significant populations of Asian elephants (Elephas maximus)'.
The Sumatran lowland rain forests ecoregion covers the lowland forests running the length of the island of Sumatra in Indonesia. The region is one of exceptionally high biodiversity, similar to Borneo and New Guinea islands. Many endangered mammals species are present, and over 450 species of birds have been found in the region. In recent years, illegal logging and human encroachment have put great strain on this ecoregion.
The Sumatran peat swamp forests ecoregion covers the low-lying peat swamp forests along the northeast coast of the island of Sumatra in Indonesia. As is typical for peat swamp forests, this ecoregion lies between a thin strip of saltwater-affected mangroves on the coast, and freshwater swamps and lowland rainforest forest on better drained soils further inland. Because the peat soil has relatively low nutrient levels, this ecoregion has been less used for agriculture, but burning and clearance has degraded half of the forest.
 | This article needs additional citations for verification .(March 2008) |
