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Mangifera dongnaiensis 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Sapindales Anacardiaceae

Scientific Name: Mangifera dongnaiensis
Species Authority: Pierre
Taxonomic Source(s): Kostermans, A.J.G.H. and Bompard, J.-M. 1993. The Mangoes. Academic Press Ltd., London.
Taxonomic Notes: Mangifera dongnaiensis Pierre belongs to Taxon Group two of Mango M. indica L.

Assessment Information [top]

Red List Category & Criteria: Endangered A2cd ver 3.1
Year Published: 2016
Date Assessed: 2015-01-28
Assessor(s): Maxted, N. & Rhodes, L.
Reviewer(s): Fielder, H. & Dillon, N.
Justification:
This species is globally assessed as Endangered (A2c), in line with a previous Red List assessment (WCMC 1998) which also categorized the species as Endangered based on a population reduction of at least 50% over the past three generations (90 years) and a decline in the extent/quality of habitat. There does not appear to be any new evidence to contradict this previous conclusion, further, the decline of forest habitat in Viet Nam is ongoing (FSIV 2009). 

Survey work to confirm population distribution, size and trend should be carried out as a priority. Using this information, management and monitoring of populations within existing protected areas should then be implemented to help secure the species in the long-term. In situ conservation is a priority for conservation of this species due to difficulties in storing this species ex situ.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Mangifera dongnaiensis is endemic to southern Viet Nam (Bien Hoa, Giaray and Djirnig in Dong Nai and Lam Dong provinces) (WCMC 1998, Mukherjee 1985).
Countries occurrence:
Native:
Viet Nam
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Estimated extent of occurrence (EOO) - km2:
Continuing decline in extent of occurrence (EOO):Unknown
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Mukherjee (1985) states that this species has a very restricted and local distribution, but also that not enough is known about is population distribution, size or trend. A decreasing population trend is inferred from decreasing extent and quality of Viet Nam forest habitat. Despite the forest area of Viet Nam being documented as continuously increasing through forest plantation establishment and natural forest rehabilitation, the total area of rich and average quality forest is in continuous decline (FSIV 2009).
Current Population Trend:Decreasing
Additional data:
Continuing decline of mature individuals:Unknown
Extreme fluctuations:UnknownPopulation severely fragmented:Unknown
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:UnknownAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:This species is restricted to the diminishing submontane wet evergreen forests (WCMC 1998).
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):30

Use and Trade [top]

Use and Trade: The fruits of this species are harvested from wild sources, though this is not always sustainable and is often illegally gathered from protected forests (CTBR 2010). 

In addition, this species belongs to Taxon Group two of the cultivated Mango Mangifera indica (Kostermans and Bompard 1993) and so it has the potential for use as a gene donor for crop improvement.

Threats [top]

Major Threat(s): In some areas within this species' native distribution poor harvesting practices and unsustainably high levels of collection are an ongoing threat (CTBR 2010). Degradation of forest habitats also poses a significant threat to the species (FSIV 2009).

Conservation Actions [top]

Conservation Actions: Twelve herbarium specimens are documented to be held in the French Institution for Natural History (MNHN). As this species is recalcitrant and its seeds cannot be dried and frozen for storage in gene banks, living collections are required for ex situ conservation. However, no evidence for living collections conserved ex situ could be found. 

According to CTBR (2010), this species occurs in the Cat Tien Biosphere Reserve in Viet Nam, where in 2007 conservation projects to conserve the remaining forest habitat, enhance public awareness of the value of the reserve and to improve income generating opportunities for local populations were in place. Unfortunately, progress of this project is unknown.

The establishment of active population management and monitoring, specifically targeted towards this species is recommended.

Citation: Maxted, N. & Rhodes, L. 2016. Mangifera dongnaiensis. The IUCN Red List of Threatened Species 2016: e.T32133A2810468. . Downloaded on 27 March 2017.
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