Ecosystems

Atlantic Rainforest's Ecosystems

The Atlantic Forest region includes forests of several variations.

The Atlantic Forest (Mata Atlântica in Portuguese) is a region of tropical and subtropical moist forest, tropical dry forest, tropical savannas, and mangrove forests which extends along the Atlantic coast of Brazil from Rio Grande do Norte state in the north to Rio Grande do Sul state in the south, and inland as far as Paraguay and the Misiones Province of Argentina.

During glacial periods, however, the Atlantic Forest is known to have shrunk to extremely small refugia in highly sheltered gullies, with most of the land area more recently occupied by the characteristic Atlantic Forest being occupied by dry forest or even semi-desert. Some maps even suggest the forest actually survived in moist pockets well away from the coastline, where its endemic rainforest species mixed with much cooler-climate species.

- The coastal restingas are low forests which grow on stabilized coastal dunes.

- The coastal forests, also known as Atlantic moist forests, are evergreen tropical forests with structures.

- Inland are the interior forests, also known as the Atlantic semi-deciduous forests, where many trees drop their leaves during the dry season.

- Further inland are the Atlantic dry forests, which form a transition between the arid Caatinga to the northeast and the Cerrado savannas to the east.

- Montane moist forests occur in the Serra do Mar and across the mountains and plateaus of southern Brazil, and are home to Araucaria and evergreen trees of the laurel (Lauraceae) and myrtle (Myrtaceae) families.

- Shrubby montane savannas occur at the highest elevations.

The Atlantic Forest is unusual in that it extends as a true tropical rainforest to latitudes as high as 24°S. This is because the trade winds produce precipitation throughout the southern winter. In fact, the northern Zona da Mata of northeastern Brazil receives much more rainfall between May and August than during the southern summer. The Dunas Park in Rio Grande do Norte is one of the largest units of conservation of atlantic forest in Brazil.

The Atlantic Forest is now designated a World Biosphere Reserve, which contains a large number of highly endangered species including the well known marmosets and lion tamarins. It has been extensively cleared since colonial times, mainly for the farming of sugar cane and for urban settlements. The remnant is estimated to be less than 10% of the original and that is often broken into hilltop islands.

Tropical and subtropical moist broadleaf forests:
- Araucaria moist forests
- Atlantic Coast restingas
- Bahia coastal forests
- Bahia interior forests
- Caatinga enclaves moist forests
- Paraná-Paraíba interior forests
- Pernambuco coastal forests
- Pernambuco interior forests
- Serra do Mar coastal forests

Tropical and subtropical dry broadleaf forests
- Atlantic dry forests

Tropical and subtropical grasslands, savannas, and shrublands
- Campos Rupestres montane savanna

Mangroves
- Bahia mangroves
- Ilha Grande mangroves
- Rio Piranhas mangroves
- Rio São Francisco mangroves



To know more:

:. Atlantic Forest - Conservation International CI

:. Atlantic Forest - The Nature Conservancy TNC

:. The New York Botanic Garden: Atlantic Coastal Forest