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The Sahel is a broad semi-arid belt extending across Africa between the Sahara Desert to the north and wetter savannas to the south. It runs from the Atlantic region of Senegal and Mauritania eastward through countries including Mali, Burkina Faso, Niger, Chad, and Sudan. Rainfall is low and highly...

The Chad Basin is a large endorheic drainage basin in central Africa, meaning that its waters do not flow to an ocean. It extends across parts of eight countries and is centered on Lake Chad, a shallow lake whose area changes with seasonal inflow and longer-term water conditions. The basin includes...

Lake Chad is a shallow, endorheic freshwater lake at the meeting point of Chad, Cameroon, Niger, and Nigeria. Its surface area responds strongly to rainfall, river inflow, evaporation, and water withdrawals for irrigation. Historical studies report about a 90 percent decline in surface area from the...

The Limpopo Basin is the drainage basin of the Limpopo River, extending across Botswana, South Africa, Zimbabwe, and Mozambique before reaching the Indian Ocean. Its landscape includes semi-arid uplands, savanna, floodplains, and cultivated lowlands. The basin supports agriculture, domestic water su...

Northern Congolian Forest-Savanna Mosaic is a transitional ecoregion spanning the DRC, Republic of Congo, and Central African Republic where equatorial forest and open savanna interdigitate across a broad ecotone.

West Sudanian Savanna extends across the Sahel-Sudan zone from Senegal to the Central African Republic, one of Africa's largest savanna ecoregions, dominated by Combretum-Terminalia woodland and seasonally dry grassland.

Guinean Forest-Savanna Mosaic stretches across West Africa from Senegal to the DRC, forming a transitional belt between the Upper Guinean forests and the Sudanian savannas and supporting high mammal diversity.

The North European Plain is a broad, low-lying region extending across northern Europe from France toward Russia. Much of the plain was shaped by past glaciation and contains fertile soils, major rivers, and extensive agricultural land. Its relatively open terrain has also made it a significant rout...

East Sudanian Savanna spans south-central Sudan, northern Uganda, and western Ethiopia, forming a broad dry woodland belt between the Sahel and the Congo Basin with significant large mammal diversity.

The Baltic Plain is a broad European lowland extending around the southern and southeastern shores of the Baltic Sea. It includes parts of northern Germany, Poland, the Baltic states, Belarus, and northwestern Russia, although its boundaries vary among geographic sources. Much of the landscape was s...