Useful Tree Species for Eastern Africa

a species selection tool based on the VECEA Map



Somalia-Masai semi-desert grassland and shrubland (S)

Description

White (1983) does not think that there is an objective criterion to separate arid regions from wet regions, although he also mentions that semi-desert areas usually begin to appear where the mean annual rainfall drops below 250 mm, the southern boundary of the Sahara desert corresponds to the 150 mm isohyet and the northern boundary of the Sahara desert corresponds to the 100 mm isohyet. However, he defines semi-deserts as areas where the differences in soil characteristics (such as soil colour) are more conspicuous than the vegetation itself, but where the plants are still sufficiently evenly distributed so that the vegetation can be further classified in physiognomic categories such as “semi-desert grassland” and “semi-desert shrubland” (White 1983 pp. 52 - 53).

Where annual rainfall is between 100 and 200 mm in the Somalia-Masai floristic region, semi-desert grassland (dominated by Centropodia glauca, Eragrostis mahrana and Panicum turgidum) occurs on deep sand. Under similar rainfall conditions, semi-desert shrubland occurs on stony soils (White 1983 p. 115).


F. Gachathi 2010; Figure 9.2 in VECEA Volume 5

Plant species

The main species recorded to occur within this vegetation type are listed below. Clicking the name of any of these species will open the page for that species on the Agroforestry Species Switchboard. Between brackets the English vernacular name of the species and the documented country distribution of the species (B=Burundi, E=Ethiopia, K=Kenya, M=Malawi, R=Rwanda, T=Tanzania, U=Uganda, Z=Zambia) is provided.

Based on information on species presence in national manifestations of vegetation types, each species was classified as a regionally dominant, characteristic, present or marginal species for a vegetation type (Read more ...)

Products and environmental services of tree species

Documented products and environmental services for the tree species occurring in this vegetation type (S) are listed below. Clicking the name of any of these species will open the page for that species on the Agroforestry Species Switchboard. Between brackets information is given on the status of each species ('dom' indicates dominant species, 'cha' characteristic species, 'pre' other species and 'mar' species of marginal occurrence), the English vernacular name of the species and the documented country distribution of the species (B=Burundi, E=Ethiopia, K=Kenya, M=Malawi, R=Rwanda, T=Tanzania, U=Uganda, Z=Zambia).

Wood

Human consumption

Animal consumption

Environmental services

Other products

For more detailed information about the species occurrences see this excel workbook. It provides country specific information on species composition for this vegetation type. It also allows you to select a subset of useful tree species to provide desired products and services. For each species links to a number of websites / databases with information about this species are provided as well.

Conservation status

The table shows the area (km2) of the vegetation type and the percentage of this area explicitly designated for biodiversity, species or landscape protection (A) and areas designated for both protection and sustainable use objectives (B). Only the nationally designated protected areas were included.

PNV Area (km2) A (%) B (%)
Bds/S 3,486 0.00 4.70
S 100,640 1.20 5.60

A) Include the IUCN categories I - IV; B) Include the IUCN categories V - VI and the protected areas without IUCN classification. Read more

Links

Species selection tool
Other vegetation types
http://vegetationmap4africa.org
Documentation

Citation and terms of use

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