Terrestrial ecoregions of Mexico 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.[ 1] 
Realm Biome Ecoregion State 
 
Nearctic 
Deserts and xeric shrublands 
Baja California desert 
Baja California , Baja California Sur 
 
Nearctic 
Deserts and xeric shrublands 
Central Mexican matorral 
Aguascalientes , Guanajuato , Hidalgo , Jalisco , Mexico , Mexico City , Michoacán , Querétaro , Zacatecas 
 
Nearctic 
Deserts and xeric shrublands 
Chihuahuan Desert 
Chihuahua , Coahuila , Durango , Nuevo León , Sonora , Zacatecas 
 
Nearctic 
Deserts and xeric shrublands 
Gulf of California xeric scrub 
Baja California , Baja California Sur 
 
Nearctic 
Deserts and xeric shrublands 
Meseta Central matorral 
Coahuila , Durango , Hidalgo , Nuevo León , Querétaro , San Luis Potosí , Tamaulipas , Zacatecas 
 
Nearctic 
Deserts and xeric shrublands 
Sonoran Desert 
Baja California , Sinaloa , Sonora 
 
Nearctic 
Deserts and xeric shrublands 
Tamaulipan matorral 
Nuevo León , Tamaulipas 
 
Nearctic 
Deserts and xeric shrublands 
Tamaulipan mezquital 
Coahuila , Nuevo León , Tamaulipas 
 
Nearctic 
Mangroves 
Northern Mesoamerican Pacific Coast Mangroves 
Baja California Sur , Sinaloa , Sonora 
 
Nearctic 
Mediterranean forests, woodlands, and scrub 
California coastal sage and chaparral 
Baja California 
 
Nearctic 
Temperate coniferous forests 
Sierra Juárez and San Pedro Mártir pine–oak forests 
Baja California 
 
Nearctic 
Temperate broadleaf and mixed forests 
Sierra Madre Occidental pine–oak forests 
Chihuahua , Durango , Jalisco , Sonora , Zacatecas 
 
Nearctic 
Temperate broadleaf and mixed forests 
Sierra Madre Oriental pine–oak forests 
Chihuahua , Coahuila , Durango , Hidalgo , Nuevo León , Puebla , Querétaro , San Luis Potosí , Tamaulipas , Veracruz , Zacatecas 
 
Nearctic 
Tropical and subtropical dry broadleaf forests 
Sonoran–Sinaloan transition subtropical dry forest 
Sinaloa , Sonora 
 
Nearctic 
Tropical and subtropical grasslands, savannas, and shrublands 
Tamaulipan pastizal 
Tamaulipas 
 
Neotropical 
Deserts and xeric shrublands 
San Lucan xeric scrub 
Baja California Sur 
 
Neotropical 
Deserts and xeric shrublands 
Tehuacán Valley matorral 
Oaxaca , Puebla , Tlaxcala 
 
Neotropical 
Flooded grasslands and savannas 
Central Mexican wetlands 
Mexico , Michoacán , Guanajuato , Mexico City 
 
Neotropical 
Mangroves 
Alvarado mangroves 
Tamaulipas , Veracruz 
 
Neotropical 
Mangroves 
Belizean Coast mangroves 
Quintana Roo 
 
Neotropical 
Mangroves 
Marismas Nacionales–San Blas mangroves 
Nayarit , Sinaloa 
 
Neotropical 
Mangroves 
Mayan Corridor mangroves 
Quintana Roo 
 
Neotropical 
Mangroves 
Mexican South Pacific Coast mangroves 
Guerrero , Michoacán , Oaxaca 
 
Neotropical 
Mangroves 
Petenes mangroves 
Campeche , Yucatán 
 
Neotropical 
Mangroves 
Ría Lagartos mangroves 
Yucatán 
 
Neotropical 
Mangroves 
Tehuantepec–El Manchón mangroves 
Chiapas 
 
Neotropical 
Mangroves 
Usumacinta mangroves 
Tabasco 
 
Neotropical 
Montane grasslands and shrublands 
Zacatonal 
Hidalgo , Mexico , Morelos 
 
Neotropical 
Tropical and subtropical coniferous forests 
Central American pine–oak forests 
Chiapas 
 
Neotropical 
Tropical and subtropical coniferous forests 
Sierra de la Laguna pine–oak forests 
Baja California Sur 
 
Neotropical 
Tropical and subtropical coniferous forests 
Sierra Madre de Oaxaca pine–oak forests 
Oaxaca , Puebla , Veracruz 
 
Neotropical 
Tropical and subtropical coniferous forests 
Sierra Madre del Sur pine–oak forests 
Guerrero , Jalisco , Michoacán , Oaxaca , Puebla 
 
Neotropical 
Tropical and subtropical coniferous forests 
Trans-Mexican Volcanic Belt pine–oak forests 
Aguascalientes , Colima , Guanajuato , Guerrero , Hidalgo , Jalisco , Mexico , Mexico City , Michoacán , Morelos , Nayarit , Puebla , Querétaro , San Luis Potosí , Tlaxcala , Veracruz , Zacatecas 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Bajío dry forests 
Guanajuato , Jalisco , Michoacán 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Balsas dry forests 
Guerrero , Mexico , Michoacán , Morelos , Oaxaca  and Puebla 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Central American dry forests 
Chiapas 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Chiapas Depression dry forests 
Chiapas 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Jalisco dry forests 
Colima , Jalisco , Michoacán , Nayarit 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Revillagigedo Islands dry forests 
Colima 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Sierra de la Laguna dry forests 
Baja California Sur 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Sinaloan dry forests 
Chihuahua , Jalisco , Nayarit , Sinaloa , Sonora 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Southern Pacific dry forests 
Chiapas , Guerrero , Oaxaca 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Veracruz dry forests 
Veracruz 
 
Neotropical 
Tropical and subtropical dry broadleaf forests 
Yucatán dry forests 
Campeche , Quintana Roo , Yucatán 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Chiapas montane forests 
Chiapas 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Chimalapas montane forests 
Chiapas , Oaxaca 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Oaxacan montane forests 
Oaxaca , Puebla , Veracruz 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Pantanos de Centla 
Campeche , Chiapas , Tabasco 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Petén–Veracruz moist forests 
Campeche , Chiapas , Oaxaca , Puebla , Quintana Roo , Tabasco , Veracruz 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Sierra de los Tuxtlas 
Veracruz 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Sierra Madre de Chiapas moist forests 
Chiapas 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Veracruz moist forests 
Hidalgo , Puebla , San Luis Potosí , Tamaulipas , Veracruz 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Veracruz montane forests 
Hidalgo , Puebla , Veracruz 
 
Neotropical 
Tropical and subtropical moist broadleaf forests 
Yucatán moist forests 
Campeche , Quintana Roo , Yucatán 
 
Freshwater ecoregions 
Baja California Complex 
Sinaloan Coastal Complex 
Rio Bravo Complex 
Rio Panuco Complex 
Balsas Complex 
Pacific Central Complex 
Atlantic Central Complex 
Warm Temperate Northeast Pacific 
Warm Temperate Northwest Atlantic 
Northern Gulf of Mexico[ 2]  
Tropical Northwestern Atlantic 
Southern Gulf of Mexico[ 2]  
Western Caribbean[ 2]  
See also 
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.