Orania trispatha

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	LILIOPSIDA	ARECALES	PALMAE

Scientific Name:	Orania trispatha
Species Authority:	(J.Dransf. & N.W.Uhl) Beentje & J.Dransf.
Synonym/s:	Halmoorea trispatha J.Dransf. & N.W.Uhl

Assessment Information [top]

Red List Category & Criteria:

Vulnerable B2ab(ii,iii,v); D1 ver 3.1

Year Published:

2012

Assessor/s:

Rakotoarinivo, M. & Dransfield, J.

Reviewer/s:

Baker, W.J. & Beentje, H.J.

Contributor/s:

Justification:
This species although it has a large extent of occurrence exceeding 25,000 km², has a restricted area of occupancy of 1,644 km². It is known from seven widely separated sites (locations), most of which are unprotected. There is continuing decline in the area of occupancy, extent and quality of the habitat and number of mature individuals due to various threats. The population comprises about 600 mature mature individuals. The species therefore qualifies for listing as Vulnerable under criteria B2 and D1.

History:

1998	–	Critically Endangered
1997	–	Endangered (Walter and Gillett 1998)

Geographic Range [top]

Range Description:	Endemic to Madagascar, occurring between Farafangana and Antalaha.
Countries:	Native: Madagascar
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	The population size is relatively small comprising about 600 mature individuals in the wild and is declining.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	Occurs in lowland rain forest; grows on flat ground near streams and swamp edges at altitudes ranging from 20 to 500 m.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	The main threat to this species is habitat loss through clearance for shifting agriculture and logging. There is localized felling of this palm as the trunks are used to make planks for house construction.

Major Threat(s):

The main threat to this species is habitat loss through clearance for shifting agriculture and logging. There is localized felling of this palm as the trunks are used to make planks for house construction.

Conservation Actions [top]

Conservation Actions:	Protected in Masoala, Mananara Avaratra and Manombo. The harvesting of trunks needs to be monitored.

Conservation Actions:

Protected in Masoala, Mananara Avaratra and Manombo. The harvesting of trunks needs to be monitored.

Citation:	Rakotoarinivo, M. & Dransfield, J. 2012. Orania trispatha. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 20 May 2013.
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