Tropical Rain Forest Information:

TRF Annual Stats:
Temperature70°F to 100°F
Rainfall100 inches or more
Dewpointusually over 70°F
Tropical rain forest occurs at the equator on all continents that have equatorial regions. It has the highest species diversity of all terrestrial biomes, because of its warmth and wetness. Rainfall exceeds 100 inches (250 cm) per year. Temperatures vary only 10 to 20 degrees daily and there are generally no seasons. The soils are very poor because the heavy rainfall washes the nutrients away. Sunlight is very intense and plant growth is rapid. Plants include many different species of trees, lianas (vines), and epiphytes (plants that grow on other plants) such as bromeliads and orchids. Animals include primates (monkeys, lemurs, etc...), insects, birds, snakes, lizards and more that live in the canopy of the trees. Most of the animal life in a tropical rain forest is arboreal - meaning it lives in the trees. The forest is vertically stratified into the canopy (tree tops where the leaves are), understory (mostly tree trunks and liana stems) and the forest floor (mostly covered with leaves).

A clearing in a rain forest, caused by a tree fall. The understory and forest floor are crowded with vegetation in these areas.

By James Shook [CC-BY-2.5], via Wikimedia Commons

The Amazon Rain Forest from above.
By David Evers [
CC-BY-2.0], via Wikimedia Commons

The forest floor of a rainforest is not overgrown in areas of low light

By Forest & Kim Starr [CC-BY-3.0], via Wikimedia Commons

Buttressed roots of a rainforest tree

By Tim Ross (Own work) [Public domain], via Wikimedia Commons

The understory offers trackways - tree trunks - to and from the canopy from the forest floor.

By Adz at en.wikipedia[see page for license], from Wikimedia Commons

Rainforest distribution

By Moyogo [Public Domain] via Wikimedia Commons.