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Isoberlinia Doka

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Isoberlinia Doka Isoberlinia doka LC Taxonomic Authority: Craib & Stapf Global Assessment Regional Assessment Region: Global Endemic to region Synonyms Common Names Berlinia doka (Craib & Stapf)Baker f. Upper Level Taxonomy Kingdom: PLANTAE Phylum: TRACHEOPHYTA Class: MAGNOLIOPSIDA Order: FABALES Family: LEGUMINOSAE Lower Level Taxonomy Rank: Infra- rank name: Plant Hybrid Subpopulation: Authority: General Information Distribution Isoberlinia doka is distributed in west and central Africa from Guinea in the west to Sudan and Uganda in the east (Benin, Burkina Faso, Burundi, Cameroon, Central African Rep., Chad, Ghana, Guinea, Ivory Coast, Mali, Niger, Nigeria, Sudan, Togo, Uganda and Zaire); it is not known to occur south of the equator. Range Size Elevation Biogeographic Realm Area of Occupancy: Upper limit: Afrotropical Extent of Occurrence: Lower limit: Antarctic Map Status: Depth Australasian Upper limit: Neotropical Lower limit: Oceanian Depth Zones Palearctic Shallow photic Bathyl Hadal Indomalayan Photic Abyssal Nearctic Population I. doka is widespread in west and central Africa, the species is also generally described as common and as the dominant tree of a vegetation community (Sands 1965). Total Population Size Minimum Population Size: Maximum Population Size: Habitat and Ecology I. doka is a tree 10-18 m high or more which grows in dry savanna. I. doka could be the dominant species in woodland savanna, which is therefore called the doka savanna (Shorrocks 2007). The species has been described as gregarious in habitat, evanescent, quickly colonising clearings and abandoned land establishing near pure stands (Burkill 1995). 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 Definition Tree - size unknow Tree (any size), also termed a Phanerophyte (>1m) Threats I. doka is mainly used for the timber; the species is currently common and widespread, but it would need to be monitored over a long period of time to make sure that the harvested level is regulated and that the species is not over-exploited. Past Present Future 13 None Conservation Measures There are no known conservation measures specifically for I. doka, but the species is currently known to occur in many protected areas. Samples of seed of I. doka are held in the Millennium Seed Bank as an ex situ conservaions measure. In Place Needed 3 Research actions 3.5 Threats 3.6 Uses and harvest levels 3.9 Trends/Monitoring 4 Habitat and site-based actions 4.4 Protected areas 4.4.3 Management 5 Species-based actions 5.3 Sustainable use 5.7 Ex situ conservation actions Countries of Occurrence PRESENCE ORIGIN Year Breeding Non- Passage Possibly Extinct Presence Native Introduced Re- Vagrant Origin Round Season breeding migrant extinct uncertain Introduced uncertain only season only Benin Burkina Faso Burundi Cameroon Central African Republic Chad Congo, The Democratic Republic of the Côte d'Ivoire Ghana Guinea Mali Niger Nigeria Sudan Togo Uganda General Habitats Score Description Major Importance General Habitats Score Description Major Importance 2 Savanna 1 Suitable Unset 2.1 Savanna - Dry 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 3. Medicine - human and veterinary 7. Fuel I. doka is mainly used for the timber. In Togo the wood is reduced to ash for soap-making (Burkill 1995). 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 status: 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 species): Is the species Possibly Extinct? Possibly Extinct Candidate? Rationale for the Red List Assessment I. doka is a savanna tree species common and widespread in west and central Africa. I. doka is also the dominant tree species of the doka savanna woodland vegetation community. At present the exploitation level doesn't seem to affect the population trends of this species, which is described as able to colonised quickly clearings and abandoned lands.The population is believed to be stable at present and therefore the species is rated as Least Concern. The species should be monitored over a longer period of time to make sure that it doesn't fall into a threatened category. Reason(s) for Change in Red List Category from the Previous Assessment: Genuine Change Nongenuine Change No Change Genuine (recent) New information Taxonomy Same category Genuine (since first assessment) Knowledge of Criteria Criteria Revisio and criteria Incorrect data used Other Same category but previously change in criteria Current Population Trend: Stable Date of Assessment: 02/07/2009 Name(s) of the Assessor(s): Contu, S. 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: Severely Fragmented: Number of Mature Individuals: Bibliography Brenan, J.P.M., 1963, The Species of Isoberlinia (Leguminosae), Kew Bulletin2, 219-226, , Brenan,J.P.M., 1967, Caesalp.In:Flora Trop.East Africa. Milne-Redhead & Polhill, , , Burkill, H.M., 1995, The useful plants of West Tropical Africa. Volume 3, Families J–L, 857, Royal Botanic Gardens, Kew, Richmond, United Kingdom Sands, W.A., 1965, Termite Distribution in Man-Modified Habitats in West Africa, with Special Reference to Species Segregation in the Genus Trinervitermes (Isoptera, Termitidae, Nasutitermitinae), Journal of Animal Ecology3, 557-571, , Shorrocks, B., 2007, The biology of African savannahs, 268, Oxford University Press, Oxford.
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