Desert ecosystems are terrestrial biomes characterized by chronically low precipitation, high evapotranspiration, and large diurnal temperature fluctuations, resulting in water-limited primary productivity and sparse, highly specialized biota. Vegetation often exhibits xerophytic adaptations such as CAM or C4 photosynthesis, deep or extensive root systems, reduced leaf area, and osmotic adjustment, while fauna display behavioral and physiological strategies for water conservation and thermal regulation. Biogeochemical cycles are strongly pulsed, with episodic rainfall events driving rapid nutrient mineralization and biological activity. Desert ecosystems are structured by resource heterogeneity (e.g., “resource islands”), soil crust communities, and disturbance regimes including wind erosion and episodic flooding.
The Sahara Desert is one of the driest areas in the world. It gets just 3 inches of precipitation per year—one-tenth of the amount of Chicago's rain, sleet and snow.
Environment
Oct 15, 2025
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151
Botswana's fertile Okavango Delta is one of the last remaining high-biodiversity ecosystems in the world, home to cheetahs, African wild dogs, baobab trees, crocodiles, termites and owls that catch fish. Roughly the size ...
Ecology
Oct 13, 2025
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43
If you've ever traveled through drylands, you may have noticed striking vegetation patterns—stripes, spots, or rings—scattered across otherwise barren landscapes. From "tiger bush" in West Africa to the enigmatic "fairy circles" ...
Ecology
Oct 9, 2025
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52
Palm trees grace the landscape across Africa, thriving in environments as diverse as deserts and rainforests. Central Africa holds the richest variety, home to 52 species, while west Africa has 38 and east Africa 18. They ...
Plants & Animals
Oct 1, 2025
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22
Ephemeral desert rivers known as wadis—lifelines for biodiversity and water in some of the world's driest landscapes—are being dangerously constricted by human activity, new research has found.
Earth Sciences
Sep 23, 2025
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24
Fish living in warm and arid climates are used to adversity. High temperatures and droughts can routinely cause the streams they call home to stop flowing or dry out altogether.
Ecology
Sep 17, 2025
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21
Though it may seem counterintuitive, desert-dwelling plants and animals who are well-adapted to hot, dry conditions are still threatened by rising temperatures, drought, and other extremes caused by climate change. For some ...
Plants & Animals
Sep 8, 2025
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47
A study from researchers at Ben-Gurion University of the Negev reveals that desert soils can emit powerful greenhouse gases within minutes of being wetted—even in the absence of microbial life.
Earth Sciences
Sep 3, 2025
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48
A recent study led by Prof. Zeng Fanjiang from the Xinjiang Institute of Ecology and Geography of the Chinese Academy of Sciences has revealed concerning trends in soil organic carbon (SOC) loss due to prolonged human disturbance ...
Earth Sciences
Aug 21, 2025
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27
From arid deserts and alpine meadows to dense wetlands and temperate forests, Iran's natural landscapes give rise to rich native wildlife. This country is home to over 8,000 species of plants, nearly 500 bird species and ...
Ecology
Aug 18, 2025
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