The Sonoran Desert is a North American desert and ecoregion which covers large parts of the Southwestern United States in Arizona and California as well as Northwestern Mexico in Sonora, Baja California, and Baja California Sur. It is the hottest desert in Mexico. It has an area of 260,000 square kilometers (100,000 sq mi). The western portion of the United States–Mexico border passes through the Sonoran Desert.
The Chihuahuan Desert is a desert and ecoregion designation covering parts of northern Mexico and the southwestern United States. It occupies much of West Texas, the middle and lower Rio Grande Valley, the lower Pecos Valley in New Mexico, and a portion of southeastern Arizona, as well as the central and northern portions of the Mexican Plateau. It is bordered on the west by the Sonoran Desert and the extensive Sierra Madre Occidental range, along with northwestern lowlands of the Sierra Madre Oriental range. On the Mexican side, it covers a large portion of the state of Chihuahua, along with portions of Coahuila, north-eastern Durango, the extreme northern part of Zacatecas, and small western portions of Nuevo León. With an area of about 501,896 km2 (193,783 sq mi), it is the largest desert in North America.
The Sierra Madre Oriental is a mountain range in northeastern Mexico. The Sierra Madre Oriental is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America, and Antarctica.
The Sierra Madre del Sur is a mountain range in southern Mexico, extending 1,000 kilometres (620 mi) from southern Michoacán east through Guerrero, to the Isthmus of Tehuantepec in eastern Oaxaca.
The Madrean pine–oak woodlands are an ecoregion of the tropical and subtropical coniferous forests and Temperate broadleaf and mixed forests biomes, located in North America. They are subtropical woodlands found in the mountains of Mexico and the southwestern United States.
The Sierra Madre Occidental pine–oak forests are a Temperate broadleaf and mixed forests ecoregion of the Sierra Madre Occidental range from the southwest USA region to the western part of Mexico. They are home to a large number of endemic plants and important habitat for wildlife.
The Sierra Madre de Oaxaca pine–oak forests is a tropical and subtropical coniferous forests ecoregion in Southern Mexico.
The Sierra Madre de Oaxaca is a mountain range in southern Mexico. It is primarily in the state of Oaxaca, and extends north into the states of Puebla and Veracruz.
The Central Mexican Plateau, also known as the Mexican Altiplano, is a large arid-to-semiarid plateau that occupies much of northern and central Mexico. Averaging 1,825 m (5,988 ft) above sea level, it extends from the United States border in the north to the Trans-Mexican Volcanic Belt in the south, and is bounded by the Sierra Madre Occidental and Sierra Madre Oriental to the west and east, respectively.
The Tamaulipan matorral is an ecoregion in the deserts and xeric shrublands biome on the eastern slopes of the Sierra Madre Oriental range in northeastern Mexico. It is a transitional ecoregion between the Tamaulipan mezquital and the Sierra Madre Oriental pine-oak forests to the west and the Veracruz moist forests to the south. It is a desert shrubland where the flora mainly consists of woody shrubs, small trees, cacti, and succulents. Piedmont scrub occurs in shallow hollows and montane chaparral occurs above about 1,700 m (5,600 ft). There are a number of resident bird species and the mammals include Mexican prairie dog, Saussure's shrew, yellow-faced pocket gopher, Allen's squirrel, collared peccary and coyote.
The Sierra Madre Oriental pine–oak forests are a Temperate broadleaf and mixed forests ecoregion of northeastern and Central Mexico, extending into the state of Texas in the United States.
The Trans-Mexican Volcanic Belt pine–oak forests are a subtropical coniferous forest ecoregion of the Trans-Mexican Volcanic Belt of central Mexico.
The Tamaulipan mezquital is a deserts and xeric shrublands ecoregion in the southern United States and northeastern Mexico. It covers an area of 141,500 km2 (54,600 sq mi), encompassing a portion of the Gulf Coastal Plain in southern Texas, northern Tamaulipas, northeastern Coahuila, and part of Nuevo León.
The Balsas dry forests is a tropical dry broadleaf forest ecoregion located in western and central Mexico.
The Tehuacán Valley matorral is a xeric shrubland ecoregion, of the deserts and xeric shrublands biome, located in eastern Central Mexico.
The Central America bioregion is a biogeographic region comprising southern Mexico and Central America.
The Bajío dry forests is a tropical dry broadleaf forest ecoregion in western−central Mexico.
The California coastal sage and chaparral is a Mediterranean forests, woodlands, and scrub ecoregion located in southwestern California and northwestern Baja California (Mexico). It is part of the larger California chaparral and woodlands ecoregion.
The Meseta Central matorral is a deserts and xeric shrublands ecoregion in north-central Mexico.
