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A tree savanna at Tarangire National Park in Tanzania in East Africa A grass savanna at Kruger National Park in South Africa. A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close.
Miombo woodland is a tropical and subtropical grasslands, savannas, and shrublands biome (in the World Wide Fund for Nature scheme) located in central and southern tropical Africa. It includes three woodland savanna ecoregions (listed below) characterized by the dominant presence of Brachystegia and Julbernardia species of trees, and has a ...
African savannas occur between forest or woodland regions and grassland regions. Flora includes acacia and baobab trees, grass, and low shrubs. Acacia trees lose their leaves in the dry season to conserve moisture, while the baobab stores water in its trunk for the dry season. Many of these savannas are in Africa.
The flora is moist deciduous broadleaf savanna and woodland. Between these areas is open grassland. Three species of tree dominate miombo woodland: Brachystegia, Julbernardia, and Isoberlinia. Under the trees there is a rich variety of other flora while the grassland areas in the region lie on sandy soil.
Jackalberry trees often grow in riparian forests and on termite mounds, preferring deep alluvial soils, but are not uncommon on sandy soils in savanna. It grows in mutualism with termites , which aerate the soil around its roots but do not eat the living wood; in turn, the tree provides protection for the termites.
The Zambezian and mopane woodlands is a tropical and subtropical grasslands, savannas, and shrublands ecoregion of southeastern Africa.. The ecoregion is characterized by the mopane tree (Colophospermum mopane), and extends across portions of Botswana, Malawi, Mozambique, Namibia, South Africa, Eswatini, Zambia, and Zimbabwe, including the lower basins of the Zambezi and Limpopo rivers.
There are typically more evergreen trees than in most miombo woodlands. The classic miombo trees Brachystegia, Julbernardia, and Isoberlinia dominate the woodlands with other tree species such as Pterocarpus angolensis, Albizia sp. and Afzelia quanzensis. Under the trees lie important areas of plants such as the herbaceous Crotalaria and ...
Climate change and fragmentation: Climate change impacts, such as increased temperatures and altered rainfall patterns, can have adverse effects on the Nigerian lowland forests. [78] Changes in climatic conditions may disrupt the ecological balance and affect the distribution and abundance of plant and animal species. [ 79 ]