The following is a list of ecoregions in

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

as identified by the World Wide Fund for Nature (WWF). A different system of ecoregional analysis is used by the Commission for Environmental Cooperation, a trilateral body linking Mexican, Canadian and United States environmental regime.

Terrestrial ecoregions

The

terrestrial ecoregions An ecoregion (ecological region) is an ecology, ecological and Geography, geographic area that exists on multiple different levels, defined by type, quality, and quantity of environmental resources. Ecoregions cover relatively large areas of la ...

of Mexico span two biogeographic realms - the Nearctic and Neotropic - which together constitute the entire biogeography of the

Americas The Americas, sometimes collectively called America, are a landmass comprising the totality of North America and South America.''Webster's New World College Dictionary'', 2010 by Wiley Publishing, Inc., Cleveland, Ohio. When viewed as a sing ...

Veracruz Veracruz, formally Veracruz de Ignacio de la Llave, officially the Free and Sovereign State of Veracruz de Ignacio de la Llave, is one of the 31 states which, along with Mexico City, comprise the 32 Political divisions of Mexico, Federal Entit ...

is the most biodiverse state with 10 ecoregions across 5

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 and 2 realms.

Chiapas Chiapas, officially the Free and Sovereign State of Chiapas, is one of the states that make up the Political divisions of Mexico, 32 federal entities of Mexico. It comprises Municipalities of Chiapas, 124 municipalities and its capital and large ...

comes in a close second with 10 ecoregions across 4 biomes in the same realm. By contrast, Morelos is the least biodiverse state with just 2 ecoregions.

Freshwater ecoregions

Baja California Complex

* Baja California

Colorado River The Colorado River () is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and in northern Mexico. The river, the List of longest rivers of the United States (by main stem), 5th longest in the United St ...
Complex

* Colorado Delta * Sonoran

Sinaloan Coastal Complex

* Sinaloan Coastal

Rio Bravo Complex

* Rio Bravo * Pecos * Guzman * Mapimí * Cuatro Ciénegas * Llanos El Salado * Conchos * Lower Rio Bravo * Rio San Juan * Rio Salado

Lerma/Santiago Complex

Santiago Santiago (, ; ), also known as Santiago de Chile (), is the capital and largest city of Chile and one of the largest cities in the Americas. It is located in the country's central valley and is the center of the Santiago Metropolitan Regi ...

* Chapala * Lerma * Rio Verde Headwaters * Manantlan/Ameca

Rio Panuco Complex

* Rio Panuco

Balsas Complex

* Balsas

Pacific Central Complex

* Tehuantepec

Atlantic Central Complex

* Southern Veracruz * Belizean Lowlands * Catemaco * Coatzacoalcos * Grijalva-Usumacinta * Yucatán

Marine ecoregions

Warm Temperate Northeast Pacific

* Southern California Bight * Cortezian * Magdalena Transition

Tropical East Pacific

* Revillagigedos * Mexican Tropical Pacific * Clipperton">Clipperton_Island.html" ;"title="/nowiki>Clipperton Island">Clipperton/nowiki> (an overseas possession of France, disputed by Mexico) * Chiapas-Nicaragua

Warm Temperate Northwest Atlantic

* Northern Gulf of Mexico

Tropical Northwestern Atlantic

* Southern Gulf of Mexico * Western Caribbean

References

{{Reflist * Olson, D., Dinerstein, E., Canevari, P., Davidson, I., Castro, G., Morisset, V., Abell, R., and Toledo, E.; eds. (1998). ''Freshwater biodiversity of Latin America and the Caribbean: A conservation assessment.'' Biodiversity Support Program, Washington DC. * Ricketts, Taylor H; Eric Dinerstein; David M. Olson; Colby J. Loucks; et al. (1999). Terrestrial Ecoregions of North America: a Conservation Assessment. Island Press; Washington, DC.

Ecoregions