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In physical geography, a steppe (/ s t ɛ p /) is an ecoregion characterized by grassland plains without closed forests except near rivers and lakes. [1] Steppe biomes may include: the montane grasslands and shrublands biome; the tropical and subtropical grasslands, savannas, and shrublands biome; the temperate grasslands, savannas, and ...
A semi-arid climate, semi-desert climate, or steppe climate is a dry climate sub-type. It is located on regions that receive precipitation below potential evapotranspiration, but not as low as a desert climate. There are different kinds of semi-arid climates, depending on variables such as temperature, and they give rise to different biomes.
The climate of Africa is a range of climates such as the equatorial climate, the tropical wet and dry climate, the tropical monsoon climate, the semi-arid climate (semi-desert and steppe), the desert climate (hyper-arid and arid), the humid subtropical climate, and the subtropical highland climate. Temperate climates are rare across the ...
Indeed, in tropical South America and Central America, the 'rainy season' (and the 'high water season') is called invierno (Spanish) or inverno (Portuguese), though it could occur in the Northern Hemisphere summer; likewise, the 'dry season (and 'low water season') is called verano or verão, and can occur in the Northern Hemisphere winter).
Under both classifications, at least one month must average below 18 °C (64.4 °F) or the climate is considered tropical. Leslie Holdridge defined the subtropical climates as having a mean annual biotemperature between the frost line or critical temperature line, 16 °C to 18 °C (depending on locations in the world) and 24 °C. [1]
However, during the Pleistocene glacial periods (commonly referred to as ice ages), a grassland known as steppe-tundra or mammoth steppe occupied large areas of the Northern Hemisphere. These areas were very cold and arid and featured sub-surface permafrost (hence tundra) but were nevertheless productive grassland ecosystems supporting a wide ...
The North Saharan steppe and woodlands is a desert ecoregion, in the deserts and xeric shrublands biome, that forms the northern edge of the Sahara.It extends east and west across Northern Africa, south of the Mediterranean dry woodlands and steppe ecoregion of the Maghreb and Cyrenaica, which is part of the Mediterranean forests, woodlands, and scrub biome.
The South Saharan steppe and woodlands, also known as the South Sahara desert, is a deserts and xeric shrublands ecoregion of northern Africa. This band is a transitional region between the Sahara's very arid center (the Sahara desert ecoregion ) to the north, and the wetter Sahelian Acacia savanna ecoregion to the south. [ 1 ]