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Concept
Caatinga
Summary
Caatinga (kaɐˈtʃĩɡɐ) is a type of semi-arid tropical vegetation, and an ecoregion characterized by this vegetation in interior northeastern Brazil. The name "Caatinga" is a Tupi word meaning "white forest" or "white vegetation" (caa = forest, vegetation, tinga = white).
The Caatinga is a xeric shrubland and thorn forest, which consists primarily of small, thorny trees that shed their leaves seasonally. Cacti, thick-stemmed plants, thorny brush, and arid-adapted grasses make up the ground layer. Most vegetation experiences a brief burst of activity during the three-month long rainy season.
Caatinga falls entirely within earth's tropical zone and is one of 6 major ecoregions of Brazil. It covers 850,000 km2, nearly 10% of Brazil's territory. It is home to 26 million people and over 2000 species of plants, fish, reptiles, amphibians, birds, and mammals.
The Caatinga is the only exclusively Brazilian biome, which means that a large part of its biological heritage cannot be found anywhere else on the planet.
The Caatinga covers the interior portion of northeastern Brazil bordering the Atlantic seaboard (save for a fringe of Atlantic Forest), extending across nine states: Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, and parts of Minas Gerais. Altogether, the Caatinga comprises 850,000 km2, about 10% of the surface area of Brazil. By comparison, it is over nine times the surface area of Portugal, whence came Brazil's early European settlers.
Located between 3°S 45°W and 17°S 35°W, the Caatinga experiences irregular winds from all directions. Rainfall is thus intermittent but intense, totalling on average. Although the climate is typically hot and semi-arid, the Caatinga includes several enclaves of humid tropical forest, with trees tall.
To the northwest, the Caatinga is bounded by the Maranhão Babaçu forests; to the west and southwest, the Atlantic dry forests and Cerrado savannas; to the east, the humid Atlantic coastal forests; and to the north and northeast, the Atlantic Ocean.
Official source
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