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The Amazon rainforest is a species-rich biome in which thousands of species live, including animals found nowhere else in the world. To date, there is at least 40,000 different kinds of plants, 427 kinds of mammals, 1,300 kinds of birds, 378 kinds of reptiles, more than 400 kinds of amphibians, and around 3,000 freshwater fish are living in Amazon.
The densest areas of biodiversity are found in the forest canopy, a more or less continuous cover of foliage formed by adjacent treetops. The canopy, by some estimates, is home to 50 percent of all plant species. Epiphytic plants attach to trunks and branches, and obtain water and minerals from rain and debris that collects on the supporting ...
Thorn forest, a dense forest of low stature with a high frequency of thorny or spiny species, is found where drought is prolonged, and especially where grazing animals are plentiful. On very poor soils, and especially where fire or herbivory are recurrent phenomena, savannas develop.
Another tiny friend found in the Valdivian rainforest is the Monito del Monte. This tiny opossum weighs less than a pound and lives in the thickets of bamboo within the forests.
Caribou in Alaska generally are found in tundra and mountain regions, where there are few trees. However, many herds spend the winter months in the boreal forest areas. [16] Caribou are large-scale migratory animals and have been known to travel up to 50 miles (80 km) a day.
It is home for more than 10,000 types of plants, 600 timber species, as well as 1,000 bird species, 280 reptile species, and 400 mammal species, including the forest elephant, gorilla, forest buffalo, bongo, and okapi. Many of these wildlife species are threatened animals such as large lowland gorillas and chimpanzees. [2]
A few species of hummingbirds, notably some hillstars, can be seen at altitudes above 4,000 m (13,100 ft), but far higher diversities can be found at lower altitudes, especially in the humid Andean forests ("cloud forests") growing on slopes in Colombia, Ecuador, Peru, Bolivia and far northwestern Argentina. [4]
[2] [1] Insects account for nearly 70 percent of documented animal species in Canada. [2] More than 300 species are found exclusively in Canada. [5] There are 20 major ecosystems – ecozones – in Canada: 15 terrestrial and 5 marine. [6] Canada's major biomes are the tundra, boreal forest, grassland, and temperate deciduous forest.