/sci/ - Science & Math

-The average number of species of trees by hectare of forest is close to 300.

- 250.000 species of plants which live in the planet, about 90.000 are met exclusively in the tropics South American.

- About 3.000 species of fishes, were met in Amazonia what represents approximately 85 % of the species of South America. Only 35 of them are commercially run.

- In 5 years of sampling realized in 10.000 há of the Reserve Forestier Adolfo Ducke, situated near the city of Manaus, was met more than 5.000 botanical species, among which 1.000 are new for the science.

- It was estimated that the wet rain forests of the world can shelter up to 30 million species of insects.

- In a single collection, on a type of tree, were collected 80 species of ants in Central Amazonia.