The following is a list of ecoregions in Mexico 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 of Mexico span two biogeographic realms - the Nearctic and Neotropic - which together constitute the entire biogeography of the Americas.
Veracruz is the most biodiverse state with 10 ecoregions across 5 biomes and 2 realms. Chiapas 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 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
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] (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
See also
List of ecoregions in the United States (WWF) List of ecoregions in Guatemala List of ecoregions in Belize
References
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.