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May 17, 2025 at 01:59 PM
🔆Savannah
✅ Distribution: West African Sudan, East Africa, South America (Llanos and campos), Australia (Queensland). In general, savannas grow in tropical regions 8° to 20° from the Equator.
✅ Conditions: Savanna is heterogeneous environments characterized by presence of trees, bushes, and grasses. Usually Nutrient and soil moisture availability are limiting factors affecting the biomass growth. Fire, grazing herbivore and seasonal rainfall are factors behind scarce forest development in the region.
✅Climate: It is a transitional type of climate found between the equatorial rainforests and hot deserts.
✅ Temperature: Mean annual temperature is greater than 18° C. Extreme diurnal range of temperature. Confined dry and wet season.
✅Precipitation: Annual precipitation is around 80 cms. Rainfall is confined to limited period. In northern hemisphere, rainy season begins in May and lasts till September. In southern hemisphere, the rainy season is from October to March.
✅Natural vegetation: Typified by tall grass and short trees (elephant grass). It has presence of deciduous trees like Acacius. Trees are deciduous and shed the leaves in the cool, dry season to prevent excessive loss of water through transpiration. Broad trunks with water storing devices to survive droughts.
✅Presence of grasses with scattered trees and fire resisting thorny shrubs.
✅ Fauna: Antelopes, buffaloes, elephants and rhinoceros; carnivores include lion, cheetah, hyena and many rodents.
✅ Other names: Brazil (Campos), Venezuela (Llanos).
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