Negro-Branco moist forests
| Negro-Branco moist forests | |
|---|---|
Rio Negro lake in flood period
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| Ecology | |
| Realm | Neotropical |
| Biome | Tropical and subtropical moist broadleaf forests – Amazon |
| Bird species | 486 |
| Mammal species | 194 |
| Geography | |
| Area | 212,897 km2 |
| Countries | Brazil, Colombia, Venezuela |
| Coordinates | 1°46′34″N 66°14′56″W / 1.776°N 66.249°WCoordinates: 1°46′34″N 66°14′56″W / 1.776°N 66.249°W |
| Geology | Guiana Shield |
| Rivers | Rio Negro, Rio Branco, Guaviare, Inírida, Vichada River, Ventuari |
The Negro-Branco moist forests (NT0143) is an ecoregion of tropical moist broad leaf forest to the east of the Andes in southern Venezuela, eastern Colombia and northern Brazil, in the Amazon biome. It lies on the watershed between the Orinoco and Rio Negro (Amazon) basins. It includes both blackwater and whitewater rivers, creating different types of seasonally flooded forest. The vegetation is more typical of the Guiana region than the Amazon.
The ecoregion has an area of 21,289,702 hectares (52,608,000 acres) It overlays the Casiquiare Rift. The center of the ecoregion is in the extreme south of Venezuela, and covers part of the Parima Tapirapecó National Park. It extends west into Colombia, where it includes the south of El Tuparro National Natural Park, and extends to the southeast into the Brazilian states of Amazonas and Roraima, including part of the Pico da Neblina National Park. It adjoins the Caqueta and Japurá-Solimões-Negro moist forests to the south, the Llanos grasslands to the north, the Guianan piedmont and lowland moist forests to the east and the Uatuma-Trombetas moist forests to the southeast. It also adjoins or contains areas of Rio Negro campinarana.
The Negro-Branco moist forests ecoregion is on the watershed between the Orinoco in Venezuela and the Rio Negro, which is known as the Guainía River in Colombia and is a major tributary of the Amazon River. Rivers include nutrient-poor clearwater and blackwater rivers, the latter type stained dark by tannin, and nutrient-rich whitewater rivers.
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Wikipedia