Ecosystems

Savannah

Savannah biome

An expanse of grass

All tropical or rain forests were originally woods located between the Tropic of the Cancer (23° and 27' N) and the Tropic of the Capricorn (23° e 27’ S). This area typically has a mean temperature of approximately 25°C with oscillations of no more than 2-3 degrees and plenty of rainfalls (over 1,500 mm a year). In some forests, the annual rainfall may reach 11,000 mm, even if in most areas it is around 2,500 mm. The best word to describe this forest actually is "rainforest". In some forests it rains little but every day (rainforests or equatorial forests), while in others (in the south-east of Asia) dry and rainy periods alternate (tropical or monsoon forests). Nevertheless, for the sake of clarity, the terms "rainforest" and "tropical forest" will be considered as equivalent.