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19 Οκτ 2023 · Deserts are extremely dry environments that are home to well-adapted plants and animals. The main types of deserts include hot and dry deserts, semi-arid deserts, coastal deserts, and cold deserts.
Most of the animals in the semi-arid biome are active in daytime as well as nighttime, animals such as birds, various insects, and reptiles who often search protection in underground burrows. One notable species are the jackrabbits, herbivores that eat grass, twigs, and plants.
26 Απρ 2007 · Arid and semi-arid ecosystems in South America are best illustrated by two desert regions, the Peruvian and Atacama Deserts of the Pacific coast and the Monte Desert of central Argentina.
Desertification usually happens in semi-arid areas that border deserts. Human activities are a primary cause of desertification. These activities include overgrazing of livestock, deforestation, overcultivation of farmland, and poor irrigation practices. Overgrazing and deforestation remove plants that anchor the soil.
Selected characteristics of semi arid climates will be examined, with emphasis upon the distinction between climatic zones which have different thermal regimes.
A semi-arid climate, semi-desert climate, or steppe climate is a dry climate sub-type. It is located in regions that receive precipitation below potential evapotranspiration, but not as low as a desert climate.
Strict definitions of climatic regions vary according to the purpose for which they are made; plant ecology, faunal distribution, living conditions for humans and domesticated flocks impose different boundaries for the semiarid regions of the world.
