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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.
The biome is dominated by grass and/or shrubs located in semi-arid to semi-humid climate regions of subtropical and tropical latitudes. Tropical grasslands are mainly found between 5 degrees and 20 degrees in both North and south of the Equator.
Temperate grasslands, savannas, and shrublands are terrestrial biomes defined by the World Wide Fund for Nature. [1] The predominant vegetation in these biomes consists of grass and/or shrubs. The climate is temperate and ranges from semi-arid to semi-humid. The habitat type differs from tropical grasslands in the annual temperature regime and ...
Woody plants, shrubs or trees may occur on some grasslands—forming savannas, scrubby grassland or semi-wooded grassland, such as the African savannas or the Iberian deheza. [ 17 ] As flowering plants and trees, grasses grow in great concentrations in climates where annual rainfall ranges between 500 and 900 mm (20 and 35 in). [ 18 ]
The remaining woodlands feature mainly oak, walnut and pine. The cork oak savanna in Portugal, known as montado, is a good example of a mediterranean savanna. Shrubland: Shrublands are dense thickets of evergreen sclerophyll shrubs and small trees. They are most common near the seacoast, and are often adapted to wind and salt air from the ocean.
Oak savanna, California. An oak savanna is a type of savanna (or lightly forested grassland), where oaks (Quercus spp.) are the dominant trees. It is also generally characterized by an understory that is lush with grass and herb related plants. [1]
Although the more fertile southern areas have now mostly been converted to wheat fields, more original savanna remains in the north of the region where there are more acacia trees than eucalyptus. Plants of the region include many wildflowers and trees including the scented Acacia rostellifera.
The trees characteristically shed their leaves for a short period in the dry season to reduce water loss and produce a flush of new leaves just before the onset of the wet season with rich gold and red colours masking the underlying chlorophyll, reminiscent of autumn colours in the temperate zone.