Dalbergia assamica - Sampled Red List Index for Plants

Dalbergia assamica
Taxonomic Authority: Benth
Global Assessment Regional Region: Global Endemic to region
Synonyms
Dalbergia balansae Prain
Dalbergia lanceolaria Benth
No common names available
Upper Level Taxonomy
Kingdom: PLANTAE
Phylum: TRACHEOPHYTA
Class: MAGNOLIOPSIDA Order: FABALES
Family: LEGUMINOSAE
Lower Level Taxonomy
Rank: Infra- rank name: Plant Hybrid
Subpopulation:
Authority:
The taxonomic status of this species is debated. Some still recognise Dalbergia balansae as a separate species but
others have it as a synonym, with the accepted name Dalbergia assamica Benth. It is assessed here under
D.assamica following Niyomdham et al. 1997.
LC
General Information
Distribution
This species is found in northern Viet-Nam and southern China, Laos, Cambodia,Thailand, Myanmar, Bangladesh and India,
and has been introduced into tropical Africa.
Range Size Elevation Biogeographic Realm
Area of Occupancy: Upper limit: 800 Afrotropical
Extent of Occurrence: Lower limit: 50 Antarctic
Map Status: Depth Australasian
Upper limit:
Neotropical
Lower limit:
Oceanian
Depth Zones
Palearctic
Shallow photic Bathyl Hadal Indomalayan
Photic Abyssal Nearctic
Population
There are recent collections for this species, it has a wide distribution and occurs in a variety of habitats. It can tolerate
some disturbance and natural regeneration is strong on abandoned shifting cultivation areas (Chinh et al 1996). The
population is, therefore, inferred to be large and stable.
Total Population Size
Minimum Population Size:
Maximum Population Size:
Habitat and Ecology
This species grows in lowland and submontane mixed deciduous and dry evergreen forest, scrub and wasteland around
villages. Natural regeneration is strong on abandoned shifting cultivation areas (Chinh et al 1996).

System Movement pattern Crop Wild Relative
Terrestrial Freshwater Nomadic Congregatory/Dispersive Is the species a wild relative of a crop
Marine Migratory Altitudinally migrant
Growth From
Tree - size unknown
Definition
Tree (any size), also termed a Phanerophyte (>1m)
Threats
This forest tree suffers from the general threats associated with increasing human population pressure upon forested areas,
mainly clearance for timber and for agricultural purposes.
Past Present Future
1 Habitat Loss/Degradation (human induced)
1.1 Agriculture
1.3 Extraction
1.3.3 Wood
1.3.3.3 Clear-cutting
Conservation Measures
There are no specific conservation measures in place for this widespread species. It is found in existing protected areas, for
example, it is listed as a major tree of the mixed forest in Mae Ngao National Park in Thailand. This species is cultivated
ex situ and seed is available from seed catalogues. Further research may be needed to clarify the taxonomy of this
In Place Needed
3 Research actions
3.1 Taxonomy
4 Habitat and site-based actions
4.4 Protected areas
5 Species-based actions
5.7 Ex situ conservation actions
5.7.1 Captive breeding/Artificial propagation
Countries of Occurrence
Year Breeding
PRESENCE
ORIGIN
Non- Passage Possibly Extinct Presence Native Introduced Re- Vagrant Origin
Round Season breeding migrant extinct uncertain Introduced uncertain
only season only
Bangladesh
Cambodia
China
India
Lao People's Democratic
Republic
Myanmar
Thailand
Viet Nam

General Habitats Score Description Major
1 Forest 1 Suitable Unset
1.5 Forest - Subtropical/Tropical Dry 1 Suitable Unset
1.6 Forest - Subtropical/Tropical Moist Lowland 1 Suitable Unset
3 Shrubland 1 Suitable Unset
3.5 Shrubland - Subtropical/Tropical Dry 1 Suitable Unset
3.6 Shrubland - Subtropical/Tropical Moist 1 Suitable Unset
14 Artificial/Terrestrial 1 Suitable Unset
14.5 Artificial/Terrestrial - Urban Areas 1 Suitable Unset
Ecosystem Services
Insufficient Information available
Species provides no ecosystem services
Species Utilisation
Species is not utilised at all
Purpose / Type of Use Subsistence National International
16. Other
9. Construction/structural materials
This tree is grown to provide shade in tea gardens in Assam and is recommended as a mid-storey tree for shelter belts
(Hanelt 2001). This tree, in Vietnam, is considered one of the best hosts for lac insects, from which a resin is extacted
(Chinh et al 1996).
Trend in the level of wild offtake/harvest in relation to total wild population numbers over the last five years:
Trend in the amount of offtake/harvest produced through domestication/cultivation over the last five years:
CITES Not listed
IUCN Red Listing
Red List Assessment: (using 2001 IUCN system) Least Concern (LC)
Red List Criteria:
Date Last Seen (only for EX, EW or Possibly EX
Is the species Possibly Extinct Possibly Extinct Candidate
Rationale for the Red List Assessment
This species has an extent of occurrence (EOO) that greatly exceeds the critical threshold for a threatened category. The
estimated area of occupancy (AOO) and inferred population also exceed the critical thresholds. It is assessed as Least
Concern (LC). However, further research is needed to confirm the taxonomy, since D.balansae, if treated as a
separate species, may have a different assessment category.
Reason(s) for Change in Red List Category from the Previous Assessment:

Genuine Change Nongenuine Change No Change
Genuine (recent)
Genuine (since first assessment)
New information
Knowledge of Criteria
Taxonom
Criteria
Same category
and criteria
Incorrect data used Other Same category but
Current Population Trend: Stable Date of Assessment: 29/07/2010
Name(s) of the
H.Chadburn
Evaluator(s):
Notes:
% population decline in the past:
Time period over which the past decline has been measured for
applying Criterion A or C1 (in years or generations):
% population decline in the future:
Time period over which the future decline has been measured
for applying Criterion A or C1 (in years or generations):
Number of Locations:
Number of Mature Individuals:
Severely
Bibliography
Chinh, N. N., et al., 1996, Vietnam Forest Trees, , Agricultural Publishing House, Hanoi
Hanelt, P., 2001, Mansfelds encyclopedia of Agricultural and Horticultural Crops, Institute of Plant Genetics and Crop Plant
Research, , Springer, Berlin
Mae Ngao National Park Services., 2010, Mae Ngao National Park29 July, , Mae Ngao National Park,
Niyomdham, C., 2002, An account of Dalbergia (Leguminosae-Papilionoideae) in Thailand, Thai Forest Bulletin, 124-165, ,
Niyomdham, C., Ho, P.H., Dy Phon, P. and Vidal, J.E., 1997, Leguminoseae-Papilionoideae Dalbergieae, Flore du Cambodge
du Laos et du Vietnam, Morat, Ph., , Museum National D'histoire Naturelle, Paris
Thothathri, K., 1987, Taxonomic revision of the tribe Dalbergieae in the Indian subcontinent, , Botanical Survey of India,