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Terrestrial ecoregions of the world. This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial, freshwater, and marine ecoregions. The terrestrial scheme divides the Earth's land surface into 8 biogeographic realms, containing 867 smaller ecoregions.
A team of biologists convened by the World Wildlife Fund (WWF) developed a scheme that divided the world's land area into biogeographic realms (called "ecozones" in a BBC scheme), and these into ecoregions (Olson & Dinerstein, 1998, etc.). Each ecoregion is characterized by a main biome (also called major habitat type).
Under UNESCO's Man and Biosphere Reserve Programme, there are 142 biosphere reserves recognized as part of the World Network of Biosphere Reserves in Asia and the Pacific as of April 2016. These are distributed across 24 countries in the region.
A biogeographic realm is the broadest biogeographic division of Earth's land surface, based on distributional patterns of terrestrial organisms. They are subdivided into bioregions, which are further subdivided into ecoregions.
Ecoregions of Asia by country (37 C) B. Borneo lowland rain forests (2 C, 47 P) Borneo montane rain forests (2 C, 22 P) C. Cardamom Mountains rain forests (1 C, 5 P) E.
The 17 countries identified as megadiverse by Conservation International. A megadiverse country is one of a group of nations that harbours the majority of Earth's species and high numbers of endemic species.
An ecosystem (or ecological system) is a system formed by organisms in interaction with their environment. [2]: 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows. Ecosystems are controlled by external and internal factors.
A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature. A map of the bioregions of Canada and the US. An ecoregion (ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm.