Dypsis rivularis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Dypsis rivularis
Species Authority: (Jum. & H.Perrier) Beentje & J.Dransf.
Chrysalidocarpus rivularis Jum. & H.Perrier

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(ii,iii,v); C2a(i); 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., Baker, W.J. & Beentje, H.J.
Known from seven localities between Daraina and Ankarafantsika in the northwest but the population is severely fragmented and the area of occupancy for this species is estimated to be only 457 km². Almost all of the known sites are not protected and are subject to clearance, reducing the quality and extent of the habitat and probably reducing the population which is now estimated as 100 mature individuals. Based on this information this species qualifies for listing as Endangered.
1998 Endangered

Geographic Range [top]

Range Description: Endemic to northwest Madagascar where it occurs between Marovoay and Ambilobe.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The total population is estimated to contain fewer than 100 individuals and is decreasing.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Occurs in riverine forest. The species frequently grows on stream edges, among boulders at altitudes between 100 and 700 m.
Systems: Terrestrial

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: Protected in Ankarafantsika and Manongarivo.

Citation: Rakotoarinivo, M. & Dransfield, J. 2012. Dypsis rivularis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 03 September 2015.
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