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Dalbergia andapensis 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Fabales Leguminosae

Scientific Name: Dalbergia andapensis
Species Authority: Bosser & R.Rabev.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2012
Date Assessed: 2010-04-23
Assessor(s): Contu, S.
Reviewer(s): Hilton-Taylor, C.
Contributor(s): Members of the IUCN SSC Madagascar Plant Specialist Group
Justification:
Dalbergia andapensis is endemic to Madagascar, occurring only in the northeastern part of the country (Antsiranana province); the estimated extent of occurrence (EOO = 3,350 km²) and area of occupancy (AOO <27 km²) meet the thresholds for a threatened category and the species is known to grow only in the evergreen, humid forest, which is a habitat that has been heavily degraded and fragmented and is still suffering from severe deforestation. A continuing decline is inferred and along with the restricted number of locations, it is believed that the species is of high conservation concern and the Endangered category is assigned.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Dalbergia andapensis is endemic to Madagascar (Antsiranana province). The species is restricted to the Andapa and Vohemar regions. One specimen (Service Forestier #33795) held at the Centre National de la Recherche Applique (TEF) from Mahatsara STF (which is outside the known species' distribution range) has been attributed to this species by Rabevohitra (1992). The specimen is not included in the species' distribution range for this assessment as it is assumed to be cultivated.
Countries occurrence:
Native:
Madagascar
Additional data:
Estimated area of occupancy (AOO) - km2:27
Number of Locations:2
Lower elevation limit (metres):400
Upper elevation limit (metres):500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The species' distribution is very restricted to the northeastern part of the country and there is no precise data about population number, size and trends for this species but it is very likley to be declining. Further research and field work in the known localities should be carried out to better define the health and dynamics of this species.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:D. andapensis is a small tree, up to 8 m high, which grows in humid, broadleaved evergreen forest between the altitudes of 400 and 500 m.
Systems:Terrestrial

Use and Trade [top]

Use and Trade: Dalbergia spp. are used for the production of fine furniture and musical instruments.

Threats [top]

Major Threat(s): This species occurs in humid rainforest, a habitat suffering from rapid deforestation. Threats in the areas include slash-and-burn cultivation (particularly of forest at low altitudes), cattle-grazing, tree-cutting for charcoal production, uncontrolled bush-fires. It is estimated that the humid forest has reduced by approximately 33% since the 1970s (Moat and Smith 2007). It has been estimated (Randriamalala and Liu 2010) that in 2009 ca. 52,000 tonnes of rosewood and ebony tree were logged in northeast Madagascar. Because of the low density of rosewood tree per hectare (according to Stasse (2002) the logging pressure on rosewood in Madagascar has lead to decrease the density per hectare and loggers in 2009 were cutting young trees before they could reach the reproductive maturity (Randriamalala and Liu 2010)), loggers have to encroach new areas routinely (Barrett et al. 2010), this also means that illegal logging is being carried out within the protected areas perimeter. The logging process also facilitates the invasion of non-native species, reduces native species diversity and aridifies landscapes. At present there is no precise data about the level of extraction of D. andapensis but due to the fact that its natural distribution coincides with the areas in which there is a high risk of future illegal logging (Barrett et al. 2010) it is believed that the species might be highly threatened.

Conservation Actions [top]

Conservation Actions: There are no known conservation measures specifically for D. andapensis and the species is currently known to occur within only one protected area: Marojejy National Park. Samples of seed of D. andapensis should be collected and stored as an ex situ conservation measure. The species has been already listed in The World List of Threatened Species (1998) and in IUCN Red List of Threatened Species (1998) as Endangered. In 2010 the Minister for Environment and Forests submitted a request to the Secretariat of CITES (Convention on International Trade in Endangered Species) to list all Malagasy Dalbergia and Diospyros species (to which ebony, rosewood and pallisander belong) on Appendix III of the CITES convention.

The plant(s) at Mahatsara should be surveyed to see if this is a natural subpopulation or if it is indeed the result of cultivation.

Citation: Contu, S. 2012. Dalbergia andapensis. The IUCN Red List of Threatened Species 2012: e.T38156A20054387. . Downloaded on 26 June 2017.
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