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Euphorbia duranii 

Scope:Global
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_onStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Euphorbiales Euphorbiaceae

Scientific Name: Euphorbia duranii
Species Authority: Ursch & Leandri
Infra-specific Taxa Assessed:

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Annotations:
Needs updating
Assessor(s): Haevermans, T.
Reviewer(s): Rajeriarison, C., Labat, J.N., Lowry, P. & Randrianjohany, E. (Madagascar Plants RLA)
Justification:
Both varieties are listed as threatened, and although var ankaratrae is listed as Vulnerable (this is probably an under lisiting), the species as a whole is considered Endangered. This is because the combined extent of occurrence is < 5,000 km² and the combined area of occupancy is < 500 km². The number of locations is certainly less than five and the range is severely fragmented. There is continuing decline due to habitat loss and degradation.

Geographic Range [top]

Range Description: Madagascar: Ankaratra mountains, where it is thought to be rare; and in the Fianarantsoa area and Andringitra reserve where it is locally common.
Countries occurrence:
Native:
Madagascar
Range Map: Click here to open the map viewer and explore range.

Habitat and Ecology [top]

Habitat and Ecology: Found on rocks and inselbergs
Systems: Terrestrial

Threats [top]

Major Threat(s): Habitat degradation, fire, collection for the horticultural trade.

Conservation Actions [top]

Conservation Actions: Some localities fall within reserves and protected forests (Ankaratra and Andringitra). Listed under CITES Appendix II.

Classifications [top]

1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection
2. Land/water management -> 2.1. Site/area management
2. Land/water management -> 2.3. Habitat & natural process restoration
3. Species management -> 3.4. Ex-situ conservation -> 3.4.1. Captive breeding/artificial propagation
3. Species management -> 3.4. Ex-situ conservation -> 3.4.2. Genome resource bank
4. Education & awareness -> 4.1. Formal education
4. Education & awareness -> 4.2. Training
4. Education & awareness -> 4.3. Awareness & communications

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.4. Scale Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.2. Wood & pulp plantations -> 2.2.3. Scale Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.2. Gathering terrestrial plants -> 5.2.1. Intentional use (species is the target)
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

7. Natural system modifications -> 7.1. Fire & fire suppression -> 7.1.3. Trend Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.1. Taxonomy
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends
0. Root -> 4. Other

Bibliography [top]

IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.

Rauh, W. 1995. Succulent and Xerophytic plants of Madagascar. Vol I. Strawberry Press, Mill Valley.

Rauh, W. 1998. Succulent and Xerophytic plants of Madagascar. Vol II. Strawberry Press, Mill Valley.

Ursch, E. and Leandri, J. 1954. Les euphorbes malgaches épineuses et charnues du jardin botanique de Tsimbazaza. Mémoires de l’institut Scientifique de Madagascar, série B, 5:109-185.


Citation: Haevermans, T. 2004. Euphorbia duranii. The IUCN Red List of Threatened Species 2004: e.T44336A10893234. . Downloaded on 11 February 2016.
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