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| Hose Mountains | |
|---|---|
| Name | Hose Mountains |
| Country | Malaysia |
| Region | Sarawak |
| Coordinates | 3°N 114°E |
| Highest | Bukit Seladong |
| Elevation m | 1,200 |
Hose Mountains are a mountain range in central Borneo within the state of Sarawak, Malaysia. The range forms a significant highland block between lowland rainforests and peat swamp systems, influencing hydrology linked to the Rejang River, Baram River, and Lupar River. The massif lies near the Mulu National Park and has been the focus of botanical, zoological, and geological surveys by institutions such as the Natural History Museum, London, the Smithsonian Institution, and the Royal Botanic Gardens, Kew.
The Hose Mountains occupy a portion of northwestern Borneo contiguous with the Mulu Karst and adjacent to the Kapuas River catchment, incorporating ridgelines and plateaus that connect to the Crocker Range physiographic province. Peaks such as Bukit Seladong and surrounding spurs dominate drainage basins feeding tributaries of the Baram River and the Rejang River, affecting flood regimes in downstream settlements including Kapit and Sibu. The range’s altitudinal gradients create ecological corridors between protected areas like Gunung Mulu National Park and community-managed forests near Long Ikang and Bario, intersecting indigenous territories of the Iban, Penan, and Kelabit peoples.
The Hose Mountains are primarily composed of sedimentary sequences correlated with the Sedimentary Basin history of northern Borneo and tectonic accretion events associated with the South China Sea opening. Rock assemblages include sandstones and shales of probable Mesozoic to Cenozoic age, with localized thrust faults and folds reminiscent of structures mapped by the British Geological Survey and regional geoscientists from Universiti Malaysia Sarawak. Karst features and limestone outcrops link the range to speleological systems studied in Mulu National Park, while metamorphic belts and isolated ultramafic bodies draw comparison to ophiolitic fragments recognized in Sabah. Radiometric dating campaigns and stratigraphic surveys by teams from the University of Cambridge and National University of Malaysia have informed interpretations of uplift driven by collision between microplates associated with the Philippine Sea Plate and the Eurasian Plate.
The Hose Mountains harbor complex biomes including lowland dipterocarp forest, montane heath, and mossy cloud forest, supporting taxa recorded by the World Wildlife Fund, IUCN, and the Global Biodiversity Information Facility. Flora includes endemic dipterocarps reported in inventories by the Royal Botanic Gardens, Kew and pitcher plants comparable to species described from Gunung Mulu and Kinabalu National Park. Fauna surveys have documented primates such as the Bornean orangutan and proboscis-related populations, although the Hose region is better known for endangered terrestrial mammals like the Bornean bearded pig and cryptic civet species cataloged by the Zoological Society of London. Avian diversity includes hornbills noted by ornithologists from the Cornell Lab of Ornithology and migratory passerines tracked in partnership with the BirdLife International network. Herpetofauna and invertebrate assemblages have yielded new species described in collaboration with the Smithsonian Tropical Research Institute and taxonomists publishing in journals connected to the American Museum of Natural History.
European documentation began with 19th-century expeditions led or sponsored by actors such as Ludwig Wilhelm Schlegel-era naturalists and later by surveyors from the British North Borneo Company era, while colonial administrative mapping was conducted by officers of the Raj of Sarawak under the Brooke dynasty. Scientific expeditions in the 20th century included collectors associated with the Natural History Museum, London and botanical missions supported by the Royal Society. Ethnographic contacts involved anthropologists from the London School of Economics and fieldwork by researchers from the University of Oxford documenting Penan and Kelabit subsistence practices. Postwar geological and ecological surveys were undertaken by teams affiliated with BP exploration programs and later by multinational collaborations involving the United Nations Educational, Scientific and Cultural Organization and regional universities.
Traditional livelihoods of the Iban, Penan, and Kelabit communities have involved swidden agriculture, sago processing linked to markets in Kapit and artisanal hunting that intersects conservation priorities set by NGOs including the World Wide Fund for Nature and Conservation International. Timber extraction by firms once associated with the Sarawak Timber Industry and recent palm oil expansion modeled by corporations such as Sime Darby have altered lowland foothills, prompting responses from environmental legal advocates and campaigns supported by the Malaysian Nature Society and international donors including the Global Environment Facility. Protected area designations and community-conserved territories have been negotiated with state agencies like the Sarawak Forestry Corporation and international partners including the International Union for Conservation of Nature to balance biodiversity protection with indigenous rights litigated in forums such as the Federal Court of Malaysia and promoted through programs of the Food and Agriculture Organization. Ongoing conservation science involves monitoring by researchers from Universiti Malaysia Sarawak, capacity building with The Nature Conservancy, and biodiversity assessments published in collaborations with the IUCN Red List process.
Category:Mountain ranges of Borneo Category:Landforms of Sarawak