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Deserts and xeric (Ancient Greek ξηρός xērós 'dry') shrublands form the largest terrestrial biome, covering 19% of Earth's land surface area. [2] Ecoregions in this habitat type vary greatly in the amount of annual rainfall they receive, usually less than 250 millimetres (10 in) annually except in the margins.
Desert ecology is the study of interactions between both biotic and abiotic components of desert environments. A desert ecosystem is defined by interactions between organisms, the climate in which they live, and any other non-living influences on the habitat. Deserts are arid regions that are generally associated with warm temperatures; however ...
A desert is a landscape where little precipitation occurs and, consequently, living conditions create unique biomes and ecosystems. The lack of vegetation exposes the unprotected surface of the ground to denudation .
Gulf of Oman desert and semi-desert: Oman, United Arab Emirates: Hobyo grasslands and shrublands: Somalia: Ile Europa and Bassas da India xeric scrub: Bassas da India, Europa: Kalahari xeric savanna: Botswana, Namibia, South Africa: Kaokoveld desert: Angola, Namibia: Madagascar spiny thickets: Madagascar: Madagascar succulent woodlands: Madagascar
The water in the North American desert is mainly freshwater. There is an ephemeral flow of underground water during the wet seasons that slows during each sub-desert’s dry season. [9] Oases form in all four deserts when the groundwater reaches the surface and pools in the hollows of the desert basins. [10]
The Central Asian northern desert is an ecoregion in the deserts and xeric shrublands biome, located in the Central Asian countries of Kazakhstan and Uzbekistan.The annual precipitation ranges from 100 to 150 mm (4 to 6 in), the winters are cold at −10 to −15 °C (14 to 5 °F) and the summers hot at around 25 °C (77 °F).
Desert riparian is a North American desert vegetation type (or biome) occurring in the bottoms of valleys, canyons, and other watercourses that have water at or near the surface most of the year. [1] The visual character is of large, lush, perennial green trees surrounded by dry desert vegetation and soil coloration. [ 1 ]
The Great Basin Desert is part of the Great Basin between the Sierra Nevada and the Wasatch Range.The desert is a geographical region that largely overlaps the Great Basin shrub steppe defined by the World Wildlife Fund, and the Central Basin and Range ecoregion defined by the U.S. Environmental Protection Agency and United States Geological Survey.