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ecoregion An ecoregion (ecological region) is an ecological and geographic area that exists on multiple different levels, defined by type, quality, and quantity of environmental resources. Ecoregions cover relatively large areas of land or water, and c ...

classification systems Classification is the activity of assigning objects to some pre-existing classes or categories. This is distinct from the task of establishing the classes themselves (for example through cluster analysis). Examples include diagnostic tests, identif ...

, defined by the conservation group

World Wildlife Fund The World Wide Fund for Nature (WWF) is a Swiss-based international non-governmental organization founded in 1961 that works in the field of wilderness preservation and the reduction of human impact on the environment. It was formerly named the ...

(WWF), the

Commission for Environmental Cooperation The Commission for Environmental Cooperation (CEC; ; ) is an intergovernmental organization established by Canada, Mexico, and the United States to implement the North American Agreement on Environmental Cooperation (NAAEC), the environmental si ...

(CEC), and like agencies around the world. The WWF uses three main classifications:

Biogeographic realm A biogeographic realm is the broadest biogeography, biogeographic division of Earth's land surface, based on distributional patterns of terrestrial animal, terrestrial organisms. They are subdivided into bioregions, which are further subdivid ...

s (also called

ecozones An ecozone may refer to: * Biogeographic realm, the broadest biogeographic division of Earth's land surface (referred to as ''ecozone'' by BBC) * Biome, a large collection of flora and fauna occupying a major habitat * Bioregion, an ecologically ...

biome A biome () is a distinct geographical region with specific climate, vegetation, and animal life. It consists of a biological community that has formed in response to its physical environment and regional climate. In 1935, Tansley added the ...

s (also called

major habitat type A biome () is a distinct geographical region with specific climate, vegetation, and animal life. It consists of a biological community that has formed in response to its physical environment and regional climate. In 1935, Tansley added the cli ...

s), and ecoregions.Olson, D. M. & E. Dinerstein (1998). The Global 200: A representation approach to conserving the Earth's most biologically valuable ecoregions. ''Conservation Biol.'' 12:502–515

.Olson, D. M., Dinerstein, E., Wikramanayake, E. D., Burgess, N. D., Powell, G. V. N., Underwood, E. C., D'Amico, J. A., Itoua, I., Strand, H. E., Morrison, J. C., Loucks, C. J., Allnutt, T. F., Ricketts, T. H., Kura, Y., Lamoreux, J. F., Wettengel, W. W., Hedao, P., Kassem, K. R. (2001). Terrestrial ecoregions of the world: a new map of life on Earth. ''Bioscience'' 51(11):933–938

. *

Global 200 The Global 200 is the list of ecoregions identified by the World Wide Fund for Nature ( WWF), the global conservation organization, as priorities for conservation. According to WWF, an ecoregion is defined as a "relatively large unit of land or w ...

ecoregions (WWF), 238 single or combined ecoregions identified by the World Wildlife Fund (WWF) as priorities for conservation. *

List of terrestrial ecoregions (WWF) 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, c ...

867 terrestrial ecoregions. * List of marine ecoregions (WWF), 232 marine ecoregions of the coastal and continental shelf areas. * List of freshwater ecoregions (WWF), 426 freshwater ecoregions. * Lists of ecoregions by country *

Lists of ecoregions by continent A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but ...

** List of ecoregions in Africa ** List of ecoregions in Antarctica ** List of ecoregions in Australia ** List of ecoregions in Europe ** List of ecoregions in North America ***

List of ecoregions in North America (CEC) This list of ecoregions of North America provides an overview of North American ecoregions designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. It should not be confused with Wikipedia arti ...

*** List of ecoregions in Canada (WWF) *** List of ecoregions in Mexico *** List of ecoregions in the United States (EPA) *** List of ecoregions in the United States (WWF) ** List of ecoregions in Oceania ** List of ecoregions in South America

References

External links

One Earth’s Interactive Navigator
One Earth, presenting 14 realms, 14 biomes (major habitat types), 53 subrealms, 185 bioregions, and 844 ecoregionshttps://www.oneearth.org/bioregions-2023/
An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm

BioScience ''BioScience'' is a monthly peer-reviewed scientific journal that is published by Oxford University Press on behalf of the American Institute of Biological Sciences. It was established in 1964 and was preceded by the ''AIBS Bulletin'' (1951–1 ...

See also

References

External links