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Anisoptera curtisii 

Scope: Global
Language: English
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Theales Dipterocarpaceae

Scientific Name: Anisoptera curtisii Dyer ex King

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2acd ver 3.1
Year Published: 2017
Date Assessed: 2017-03-01
Assessor(s): Ly, V., Khou, E., Luu, H.T., Nguyen, H.N., Newman, M., Barstow, M., Hoang, V.S., Vu, V.D., Pooma, R. & Nanthavong, K.
Reviewer(s): Chua, L.S.L.
Facilitator/Compiler(s): Hilton-Taylor, C., Rivers, M.C.
Justification:
This is a large tree species found in Thailand, Malaysia, Sumatra, Myanmar and Singapore. The species is used for its timber. It has here been assessed as Vulnerable. There has been a population reduction of between 30 and 50% in the past three generations (300 years). This is due to exploitation for the timber trade, including illegal logging and also loss of habitat to agricultural expansion. Within Malaysia the species is found within protected areas. Further in situ and ex situ conservation of the species is required as it is only found in one ex situ collection.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs in Peninsular Thailand and Malaysia, Indonesia (Sumatra), also in Myanmar and Singapore. The species is found up to 850 m asl; in Malaysia it only occurs up to 650 m (Chua et al. 2010). It has an estimated extent of occurrence (EOO) of 302,537.7 km2.
Countries occurrence:
Native:
Indonesia (Sumatera); Malaysia (Peninsular Malaysia); Myanmar; Singapore; Thailand
Additional data:
Upper elevation limit (metres):850
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is limited population information for this species. Population is expected to be small although it appears to be fairly common in Malaysia where 119,000 adult trees are estimated to occur in Permanent Reserved Forests in the country (Chua et al. 2010). The species is estimated to have a generation length of 100 years. There has been an estimated population reduction of between 30 and 50% in the past three generations (300 years).
Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This is a large tree species up to 75 cm dbh (PROSEA 2017) and up to 30 m in height. It grows in mixed dipterocarp forest on well-drained, periodically dry soils, especially coastal hills and inland ridges.
Systems:Terrestrial
Generation Length (years):100

Use and Trade [top]

Use and Trade: This tree species is used for timber. It produces a light hardwood with a variety of purposes. The species belongs to the Anisoptera genus, with the trade name Mersawa, which has unrestricted harvest (ITTO 2017).

Threats [top]

Major Threat(s): The area, extent and quality of habitat of this species are in decline due to habitat loss for agriculture. The species is also likely to be threatened by logging.

Conservation Actions [top]

Conservation Actions: The species is found in only one ex situ collection (BGCI 2017), more ex situ collections of this species should be made. This species is recorded from a number of protected areas. It has been previously been globally assessed as Near Threatened (1998). Within Malaysia the species is assessed as Least Concern, due to its representation in protected areas (Chua et al. 2010). This type of protection is required throughout the rest of the species range.

Citation: Ly, V., Khou, E., Luu, H.T., Nguyen, H.N., Newman, M., Barstow, M., Hoang, V.S., Vu, V.D., Pooma, R. & Nanthavong, K. 2017. Anisoptera curtisii. The IUCN Red List of Threatened Species 2017: e.T33005A2829635. . Downloaded on 11 December 2017.
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