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An area of the Amazon rainforest in Brazil. The tropical rainforests of South America contain the largest diversity of species on Earth. [1] [2] Tropical rainforest climate zones (Af). Tropical forests: from the UN FRA2000 report. Tropical rainforests are dense and warm rainforests with high rainfall typically found between 10° north and south ...
Evolution around the world is impacted by the changing species distribution across tropical biomes because many species can be traced back to tropical ancestors. Species evolve rapidly in the tropics, changing the habitat ecology. The theory of a latitudinal species gradient suggests that species richness increases towards the equator for most ...
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 Amazon rainforest, [a] also called Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7,000,000 km 2 (2,700,000 sq mi), [ 2 ] of which 6,000,000 km 2 (2,300,000 sq mi) are covered by the rainforest . [ 3 ]
"Land snail diversity in a patch of rainforest in Cross river National Park: high species richness abundance and heterogeneity". Nigerian Journal of Applied Science 22: 166-173. Oke O. C. & Alohan F. I. (2006). "The land snail diversity in a square kilometre of tropical rainforest in Okomu National Park, Edo State, Nigeria". African Scientist 7 ...
Tropical and subtropical coniferous forests are characterized by diverse species of conifers, whose needles are adapted to deal with the variable climatic conditions. [1] Most tropical and subtropical coniferous forest ecoregions are found in the Nearctic and Neotropical realms , from Mexico to Nicaragua and on the Greater Antilles , Bahamas ...
Species evenness is the relative number of individuals of each species in a given area. [174] Species richness [175] is the number of species present in a given area. Species diversity [176] is the relationship between species evenness and species richness. There are many ways to measure biodiversity within a given ecosystem.
In the várzea, tree species richness, distribution and vegetation structure are influenced by a variety of characters such as topography and sedimentation dynamics. [1] Leguminosae and Euphorbiaceae are two of the most important and abundant families within both high and low várzea habitats. [9]