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Hopea sublanceolata 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Theales Dipterocarpaceae

Scientific Name: Hopea sublanceolata Symington

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2cd ver 3.1
Year Published: 2017
Date Assessed: 2017-03-03
Assessor(s): Newman, M. & Pooma, R.
Reviewer(s): Chua, L.S.L.
Contributor(s): Barstow, M.
Facilitator/Compiler(s): Hilton-Taylor, C., Rivers, M.C.
Justification:
Hopea sublanceolata is a large timber species. It is native to Malaysia and Thailand. This species is globally assessed as Vulnerable. It has undergone a 30-50% population reduction in the last three generations due to over exploitation and agricultural expansion in the Malaysian part of its range. The species is still threatened by logging and habitat conversion and so decline is likely to continue into the future but at an unknown rate. The species is known within protected areas in some parts of its range but it is not found in ex situ collections; this should be amended. It is recommended that population information be gathered. Harvest rate and habitat decline should also be monitored.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is native to only Peninsular Thailand and Peninsular Malaysia. It is found at low elevations from 70 m to 150 m asl and it has an estimated extent of occurrence (EOO) of over 51,000 km2.
Countries occurrence:
Native:
Malaysia (Peninsular Malaysia); Thailand
Additional data:
Lower elevation limit (metres):70
Upper elevation limit (metres):150
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is considered rare and population is scattered. Overall population is declining. The species is estimated to have undergone a 30-50% population reduction in the last three generations (300 years) due to the impacts of exploitation and agricultural expansion in the Malaysian part of its range. Decline within Thailand is not known but is assumed to be equivalent. Decline will continue into the future as causes of decline have not yet stopped.
Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This large tree species can grow up to 30 m in height. It is found in lowland evergreen forest on undulating land and low spurs of hills (Chua et al. 2010). It is a perennial species. This species habitat is declining in extent, area and quality.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):100

Use and Trade [top]

Use and Trade: This species is used for its timber. Timber of the Hopea genera is a medium hardwood and often used for construction purposes and for flooring (ITTO 2017).

Threats [top]

Major Threat(s): Within Malaysia the main threat to the species is over exploitation for timber. The species is also at risk from habitat loss due to forest clearance for agricultural expansion.

Conservation Actions [top]

Conservation Actions: This species is not reported from any ex situ collections (BGCI 2017). It is essential that ex situ collections of this species are produced. The species is found within protected areas in Malaysia. Also within Malaysia the species is assessed as Near Threatened (Chua et al. 2010). It is recommended that further information is gathered on population size and rate of decline across the species' range. Monitoring harvest of timber should also be conducted and limited if necessary. The rate of habitat decline should also be monitored and remaining habitat protected.

Citation: Newman, M. & Pooma, R. 2017. Hopea sublanceolata. The IUCN Red List of Threatened Species 2017: e.T31428A2806187. . Downloaded on 12 December 2017.
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