Dypsis sahanofensis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Arecales Arecaceae

Scientific Name: Dypsis sahanofensis (Jum. & H.Perrier) Beentje & J.Dransf.
Chrysalidocarpus sahanofensis (Jum. & H.Perrier) Jum.
Neophloga sahanofensis Jum. & H.Perrier

Assessment Information [top]

Red List Category & Criteria: Critically Endangered D ver 3.1
Year Published: 2012
Date Assessed: 2010-12-17
Assessor(s): Rakotoarinivo, M. & Dransfield, J.
Reviewer(s): Baker, W.J., Beentje, H.J. & Bachman, S.
Known from Mont Vatovavy, Ambositra and Anosibe an'Ala. The distribution range is very fragmented and in each site the number of individuals is very low; the whole population is estimated to be fewer than 40 mature individuals. There are known threats to the habitat which may be causing population declines, but these have not been definitely documented. This species qualifies for a Critically Endangered listing based on the small population size.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Endemic to Madagascar. Known from submontane and montane forest on the eastern escarpment, between Ambositra and Ampasimanolotra.
Countries occurrence:
Additional data:
Estimated area of occupancy (AOO) - km2:45
Number of Locations:4
Lower elevation limit (metres):300
Upper elevation limit (metres):1400
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:A rare palm with fewer than 40 individuals recorded. The current population trend is unknown.
Current Population Trend:Unknown
Additional data:
Number of mature individuals:40
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:Occurs in montane or submontane rainforest in the middle centre-east of Madagascar. The species grows frequently near the crests of ridges where the canopy is slightly open. Recorded at elevations from 300 up to 1,400 m.
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There is no information on use of this species.

Threats [top]

Major Threat(s): The main threat to this species is habitat loss through clearance for shifting agriculture and logging.

Conservation Actions [top]

Conservation Actions: The site in Mont Vatovavy is protected by local taboo, elsewhere only the site in Mangerivola is under protection. Further protection and regular monitoring of this highly threatened species is required.

Citation: Rakotoarinivo, M. & Dransfield, J. 2012. Dypsis sahanofensis. The IUCN Red List of Threatened Species 2012: e.T38561A2879357. . Downloaded on 26 September 2018.
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