The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and
ecoregion
An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...
that covers the northwestern Mexican states of
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...
,
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...
, and
Baja California Sur
Baja California Sur (; 'South Lower California'), officially the Free and Sovereign State of Baja California Sur ( es, Estado Libre y Soberano de Baja California Sur), is the least populated state and the 31st admitted state of the 32 federal ent ...
, as well as part of the
southwestern United States
The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, Ne ...
(in
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...
and
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
). It is the hottest desert in both Mexico and the United States. It has an area of .
In
phytogeography
Phytogeography (from Greek φυτόν, ''phytón'' = "plant" and γεωγραφία, ''geographía'' = "geography" meaning also distribution) or botanical geography is the branch of biogeography that is concerned with the geographic distribution o ...
, the Sonoran Desert is within the Sonoran
Floristic province
A phytochorion, in phytogeography, is a geographic area with a relatively uniform composition of plant species. Adjacent phytochoria do not usually have a sharp boundary, but rather a soft one, a transitional area in which many species from both re ...
of the
Madrean Region
The Madrean Region (named after the Sierra Madre Occidental) is a floristic region within the Holarctic Kingdom in North America, as delineated by Armen Takhtajan and Robert F. Thorne. It occupies arid or semiarid areas in the southwestern United S ...
of southwestern North America, part of the
Holarctic realm
The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere. It corresponds to the floristic Boreal Kingdom. It includes both the Nearctic zoogeographical region ...
of the northern
Western Hemisphere
The Western Hemisphere is the half of the planet Earth that lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian. The other half is called the Eastern Hemisphere. Politically, the term We ...
. The desert contains a variety of unique
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
plant
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclud ...
s and
animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motilit ...
s, notably, the
saguaro
The saguaro (, ) (''Carnegiea gigantea'') is a tree-like cactus species in the monotypic genus ''Carnegiea'' that can grow to be over tall. It is native to the Sonoran Desert in Arizona, the Mexican state of Sonora, and the Whipple Mountains a ...
(''Carnegiea gigantea'') and
organ pipe cactus (''Stenocereus thurberi'').
The Sonoran Desert is clearly distinct from nearby deserts (e.g., the
Great Basin
The Great Basin is the largest area of contiguous endorheic basin, endorheic watersheds, those with no outlets, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California ...
,
Mojave, and
Chihuahuan desert
The Chihuahuan Desert ( es, Desierto de Chihuahua, ) is a desert ecoregion designation covering parts of northern Mexico and the southwestern United States. It occupies much of far West Texas, the middle to lower Rio Grande Valley and the lower P ...
s) because it provides subtropical warmth in winter and two seasons of rainfall (in contrast, for example, to the Mojave's dry summers and cold winters). This creates an extreme contrast between aridity and moisture.
Location
The Sonoran desert wraps around the northern end of the
Gulf of California
The Gulf of California ( es, Golfo de California), also known as the Sea of Cortés (''Mar de Cortés'') or Sea of Cortez, or less commonly as the Vermilion Sea (''Mar Bermejo''), is a marginal sea of the Pacific Ocean that separates the Baja Ca ...
, from
Baja California Sur
Baja California Sur (; 'South Lower California'), officially the Free and Sovereign State of Baja California Sur ( es, Estado Libre y Soberano de Baja California Sur), is the least populated state and the 31st admitted state of the 32 federal ent ...
(
El Vizcaíno Biosphere Reserve
The El Vizcaíno Biosphere Reserve, created in 1988, is located in Mulegé Municipality in northern Baja California Sur, at the center of the Baja California Peninsula between the Pacific Ocean and the Gulf of California. With an area of over ), ...
in central and Pacific west coast, Central Gulf Coast subregion on east to southern tip), north through much of
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...
, excluding the central northwest mountains and Pacific west coast, through southeastern California and southwestern and southern Arizona to western and central parts of
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...
.
It is bounded on the west by the
Peninsular Ranges
The Peninsular Ranges (also called the Lower California province) are a group of mountain ranges that stretch from Southern California to the southern tip of the Baja California peninsula; they are part of the North American Coast Ranges, which ...
, which separate it from the
California chaparral and woodlands
The California chaparral and woodlands is a terrestrial ecoregion of southwestern Oregon, northern, central, and southern California (United States) and northwestern Baja California (Mexico), located on the west coast of North America. It is a ...
(northwest) and
Baja California Desert
The Baja California Desert ( es, Desierto de Baja California) is a desert ecoregion of Mexico's Baja California Peninsula. This ecoregion occupies the western portion of the Baja California peninsula, and occupies most of the Mexican states of B ...
(Vizcaino subregion, central and southeast) ecoregions of the Pacific slope. The
Gulf of California xeric scrub
The Gulf of California xeric scrub ( es, Matorral xerófilo del Golfo de California) is a xeric shrubland ecoregion of Mexico's Baja California Peninsula.
Geography
The Gulf of California xeric scrub covers an area of , lying on the eastern sid ...
ecoregion lies south of the Sonoran desert on the Gulf of California slope of the Baja California Peninsula.
To the north in California and northwest Arizona, the Sonoran Desert transitions to the colder-winter, higher-elevation
Mojave,
Great Basin
The Great Basin is the largest area of contiguous endorheic basin, endorheic watersheds, those with no outlets, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California ...
, and
Colorado Plateau
The Colorado Plateau, also known as the Colorado Plateau Province, is a physiographic and desert region of the Intermontane Plateaus, roughly centered on the Four Corners region of the southwestern United States. This province covers an area of ...
deserts.
The
coniferous
Conifers are a group of cone-bearing seed plants, a subset of gymnosperms. Scientifically, they make up the division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class, Pinopsida. All extant ...
Arizona Mountains forests
The Arizona Mountains forests are a temperate coniferous forests ecoregion of the southwest United States with a rich variety of woodland habitats and wildlife.
Setting
This is a landscape of steep mountains and high stony plateaus with rocky ou ...
are to the northeast. The
Chihuahuan Desert
The Chihuahuan Desert ( es, Desierto de Chihuahua, ) is a desert ecoregion designation covering parts of northern Mexico and the southwestern United States. It occupies much of far West Texas, the middle to lower Rio Grande Valley and the lower P ...
and
Sierra Madre Occidental pine–oak forests
The Sierra Madre Occidental pine–oak forests ( es, Bosques de pino-roble de la Sierra Madre Occidental) are a Temperate broadleaf and mixed forests ecoregion of the Sierra Madre Occidental range from the southwest USA region to the western part ...
are at higher elevations to the east. To the south the
Sonoran–Sinaloan transition subtropical dry forest
The Sonoran–Sinaloan transition subtropical dry forest is a Tropical and subtropical dry broadleaf forests, tropical dry broadleaf forest ecoregion in northwestern Mexico.
Geography
This ecoregion forms a transition belt between the Sonoran De ...
is the transition zone from the Sonoran Desert to the
tropical dry forests
The tropical and subtropical dry broadleaf forest is a habitat type defined by the World Wide Fund for Nature and is located at tropical and subtropical latitudes. Though these forests occur in climates that are warm year-round, and may receive ...
of the Mexican state of
Sinaloa
Sinaloa (), officially the Estado Libre y Soberano de Sinaloa ( en, Free and Sovereign State of Sinaloa), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. It is d ...
.
[
]
Sub-regions
The desert's sub-regions include the Colorado Desert
California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna.
Geography and geology
The Colorado De ...
of southeastern California; and the Yuma Desert
The Yuma Desert is a lower-elevation section of the Sonoran Desert in the southwestern United States and the northwest of Mexico. It lies in the Salton basin. The desert contains areas of sparse vegetation and has notable areas of sand dunes. With ...
east of the north-to-south section of the Colorado River
The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid drainage basin, watershed that encompasses parts of ...
in southwest Arizona. In the 1957 publication ''Vegetation of the Sonoran Desert'', Forrest Shreve divided the Sonoran Desert into seven regions according to characteristic vegetation: Lower Colorado Valley, Arizona Upland, Plains of Sonora, Foothills of Sonora, Central Gulf Coast, Vizcaíno Region, and Magdalena Region. Many ecologists consider Shreve's Vizcaíno and Magdalena regions, which lie on the western side of the Baja California Peninsula, to be a separate ecoregion
An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...
, the Baja California Desert
The Baja California Desert ( es, Desierto de Baja California) is a desert ecoregion of Mexico's Baja California Peninsula. This ecoregion occupies the western portion of the Baja California peninsula, and occupies most of the Mexican states of B ...
.
Within the southern Sonoran Desert in Mexico is found the Gran Desierto de Altar
The Gran Desierto de Altar is one of the major sub-ecoregions of the Sonoran Desert, located in the Sonora, State of Sonora, in northwest Mexico. It includes the only active Erg (landform), erg dune region in North America. The desert extends acro ...
, with the El Pinacate y Gran Desierto de Altar Biosphere Reserve
El Pinacate y Gran Desierto de Altar Biosphere Reserve ( es, Reserva de la Biosfera El Pinacate y Gran Desierto de Altar) is a biosphere reserve and UNESCO World Heritage Site managed by the federal government of Mexico, specifically by Secreta ...
, extending of desert and mountainous regions. The biosphere reserve includes the only active erg
The erg is a unit of energy equal to 10−7joules (100 nJ). It originated in the Centimetre–gram–second system of units (CGS). It has the symbol ''erg''. The erg is not an SI unit. Its name is derived from (), a Greek word meaning 'work' o ...
dune region in North America. The nearest city to the biosphere reserve is Puerto Peñasco
Puerto Peñasco ( ood, Geʼe Ṣuidagĭ) is a small city located in Puerto Peñasco Municipality in the northwest of the Mexican state of Sonora, from the border with the U.S. state of Arizona. According to the 2020 census, it has a population o ...
('Rocky Point') in the state of Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...
, Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
.
;Sub-regions
Sonoran Desert sub-regions include:
* Colorado Desert
California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna.
Geography and geology
The Colorado De ...
* Gran Desierto de Altar
The Gran Desierto de Altar is one of the major sub-ecoregions of the Sonoran Desert, located in the Sonora, State of Sonora, in northwest Mexico. It includes the only active Erg (landform), erg dune region in North America. The desert extends acro ...
* Lechuguilla Desert
The Lechuguilla Desert is a small desert located in southwestern Arizona near the U.S.-Mexico border. It is considered to be part of the Lower Colorado Valley region of the Sonoran Desert. It lies in a north–south direction between the Gila Mo ...
* Tonopah Desert
* Yuha Desert The Yuha Desert is a section of the Sonoran Desert located in the Imperial Valley of California; south of Interstate 8, west of El Centro, and north of the international border.
Unique aspects of the Yuha Desert include the Oyster Shell Beds, De An ...
* Yuma Desert
The Yuma Desert is a lower-elevation section of the Sonoran Desert in the southwestern United States and the northwest of Mexico. It lies in the Salton basin. The desert contains areas of sparse vegetation and has notable areas of sand dunes. With ...
Climate
The Sonoran desert has an arid subtropical climate. In the lower-elevation portions of the desert, temperatures are warm year-round, and rainfall is infrequent and irregular, often less than 90 mm (approx. 3.5”) annually. The Arizona uplands are also warm year-round, but they receive 100–300 mm (approx. 4-12”) of average annual rainfall, which falls in a more regular bi-seasonal pattern.[
]
Flora
Many plants not only survive, but thrive in the harsh conditions of the Sonoran Desert. Many have evolved to have specialized adaptations to the desert climate. The Sonoran Desert's bi-seasonal rainfall pattern results in more plant species than any other desert in the world.[ The Sonoran Desert includes plant genera and species from the ]agave
''Agave'' (; ; ) is a genus of monocots native to the hot and arid regions of the Americas and the Caribbean, although some ''Agave'' species are also native to tropical areas of North America, such as Mexico. The genus is primarily known for ...
family, palm
Palm most commonly refers to:
* Palm of the hand, the central region of the front of the hand
* Palm plants, of family Arecaceae
**List of Arecaceae genera
* Several other plants known as "palm"
Palm or Palms may also refer to:
Music
* Palm (ba ...
family, cactus
A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Greek ...
family, legume
A legume () is a plant in the family Fabaceae (or Leguminosae), or the fruit or seed of such a plant. When used as a dry grain, the seed is also called a pulse. Legumes are grown agriculturally, primarily for human consumption, for livestock f ...
family, and numerous others.
The Sonoran is the only place in the world where the famous saguaro cactus
The saguaro (, ) (''Carnegiea gigantea'') is a tree-like cactus species in the monotypic genus ''Carnegiea'' that can grow to be over tall. It is native to the Sonoran Desert in Arizona, the Mexican state of Sonora, and the Whipple Mountains ...
(''Carnegiea gigantea'') grows in the wild. Cholla (''Cylindropuntia'' spp.), beavertail (''Opuntia basilaris''), hedgehog
A hedgehog is a spiny mammal of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae. There are seventeen species of hedgehog in five genera found throughout parts of Europe, Asia, and Africa, and in New Zealand by introducti ...
(''Echinocereus'' spp.), fishhook
A fish hook or fishhook, formerly also called angle (from Old English ''angol'' and Proto-Germanic ''*angulaz''), is a hook used to catch fish either by piercing and embedding onto the inside of the fish mouth (angling) or, more rarely, by impa ...
(''Ferocactus wislizeni''), prickly pear (''Opuntia'' spp.), nightblooming cereus
Night-blooming cereus is the common name referring to a large number of flowering ceroid cacti that bloom at night. The flowers are short lived, and some of these species, such as ''Selenicereus grandiflorus'', bloom only once a year, for a s ...
(''Peniocereus'' spp.), and organ pipe
An organ pipe is a sound-producing element of the pipe organ that resonates at a specific pitch when pressurized air (commonly referred to as ''wind'') is driven through it. Each pipe is tuned to a specific note of the musical scale. A set of ...
(''Stenocereus thurberi'') are other taxa of cacti found here. Cactus provides food and homes to many desert mammals and birds, with showy flowers in reds, pinks, yellows, and whites, blooming most commonly from late March through June, depending on the species and seasonal temperatures.
Creosote bush
''Larrea tridentata'', called creosote bush and greasewood as a plant, chaparral as a medicinal herb, and ''gobernadora'' (Spanish language, Spanish for "governess") in Mexico, due to its ability to secure more water by inhibiting the growth of n ...
(''Larrea tridentata'') and bur sage (''Ambrosia dumosa'') dominate valley floors. Indigo bush The common name indigo bush can refer to plants in any of several genera in the legume family, including:
*'' Amorpha'', native to North America
*''Dalea''
*''Psorothamnus
''Psorothamnus'' is a genus of plants in the legume family. These are s ...
(''Psorothamnus fremontii'') and Mormon tea
''Ephedra'' is a genus of gymnosperm shrubs. The various species of ''Ephedra'' are widespread in many arid regions of the world, ranging across southwestern North America, southern Europe, northern Africa, southwest and central Asia, northern ...
are other shrubs that may be found. Wildflowers of the Sonoran Desert include desert sand verbena (''Abronia villosa''), desert sunflower
''Geraea canescens'', commonly known as desert sunflower, hairy desert sunflower, or desert gold, is an annual plant in the family Asteraceae. The genus name comes from the Greek ''geraios'' ("old man"), referring to the white hairs on the fruits ...
(''Geraea canescens''), and evening primrose
''Oenothera'' is a genus of about 145 species of herbaceous flowering plants native to the Americas. It is the type genus of the family Onagraceae. Common names include evening primrose, suncups, and sundrops. They are not closely related to ...
s.
Ascending from the valley up bajadas, various subtrees such as velvet mesquite (''Prosopis velutina''), palo verde (''Parkinsonia florida''), desert ironwood
''Olneya tesota'' is a perennial flowering tree of the family Fabaceae, legumes (peas, beans, etc.), which is commonly known as ironwood, desert ironwood, or palo fierro in Spanish. It is the only species in the monotypic genus ''Olneya''. This ...
(''Olneya tesota''), desert willow
''Chilopsis'' is a monotypic genus of flowering plants containing the single species ''Chilopsis linearis''. It is known commonly as desert willow (''Chilopsis linearis'' ssp. ''arcuata''), and crucifixion thorn (''Canotia holacantha'') are common, as well as multi-stemmed ocotillo
''Fouquieria splendens'' (commonly known as ocotillo (), but also referred to as buggywhip, coachwhip, candlewood, slimwood, desert coral, Jacob's staff, Jacob cactus, and vine cactus) is a plant indigenous to the Sonoran Desert and Chihuahuan ...
(''Fouquieria splendens''). Shrubs found at higher elevations include whitethorn acacia (''Acacia constricta''), fairy duster, and jojoba
Jojoba (; botanical name: ''Simmondsia chinensis'')also commonly called goat nut, deer nut, pignut, wild hazel, quinine nut, coffeeberry, and gray box bushis native to the Southwestern United States. ''Simmondsia chinensis'' is the sole specie ...
. In the desert subdivisions found on Baja California, cardon cactus, elephant tree, and boojum tree
''Fouquieria columnaris'', the Boojum tree or ''cirio'' () is a tree in the ocotillo family,(Fouquieriaceae) whose other members include the ocotillos. Some taxonomists place it in the separate genus ''Idria''. It is nearly endemic to the Baja ...
occur.
The California fan palm
''Washingtonia filifera'', the desert fan palm, California fan palm, or California palm,Flora of North America Association. ''Flora of North America: North of Mexico Volume 22: Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in Part), and Zi ...
(''Washingtonia filifera'') is found in the Colorado Desert
California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna.
Geography and geology
The Colorado De ...
section of the Sonoran Desert, the only native
Native may refer to:
People
* Jus soli, citizenship by right of birth
* Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory
** Native Americans (disambiguation)
In arts and entert ...
palm in California, among many other introduced Arecaceae
The Arecaceae is a family of perennial flowering plants in the monocot order Arecales. Their growth form can be climbers, shrubs, tree-like and stemless plants, all commonly known as palms. Those having a tree-like form are called palm trees ...
genera and species. It is found at spring
Spring(s) may refer to:
Common uses
* Spring (season), a season of the year
* Spring (device), a mechanical device that stores energy
* Spring (hydrology), a natural source of water
* Spring (mathematics), a geometric surface in the shape of a ...
-fed oases
In ecology, an oasis (; ) is a fertile area of a desert or semi-desert environment'ksar''with its surrounding feeding source, the palm grove, within a relational and circulatory nomadic system.”
The location of oases has been of critical imp ...
, such as in Anza Borrego Desert State Park
Anza-Borrego Desert State Park (, '' AN-zə bə-RAY-goh'') is a California State Park located within the Colorado Desert of southern California, United States. The park takes its name from 18th century Spanish explorer Juan Bautista de Anza and ...
, Joshua Tree National Park
Joshua Tree National Park is an American national park in southeastern California, east of San Bernardino and Los Angeles and north of Palm Springs, California, Palm Springs. It is named after the Joshua trees (''Yucca brevifolia'') native to t ...
, and the Kofa National Wildlife Refuge
The Kofa National Wildlife Refuge is located in Arizona in the southwestern United States, northeast of Yuma and southeast of Quartzsite. The refuge, established in 1939 to protect desert bighorn sheep, encompasses over of the Yuma Desert regi ...
.
Fauna
The Sonoran Desert is home to a wide variety of animals, birds and other creatures. such as the Gila monster
The Gila monster (''Heloderma suspectum'', ) is a species of venomous lizard native to the Southwestern United States and the northwestern Mexican state of Sonora. It is a heavy, typically slow-moving reptile, up to long, and it is the only v ...
, bobcat
The bobcat (''Lynx rufus''), also known as the red lynx, is a medium-sized cat native to North America. It ranges from southern Canada through most of the contiguous United States to Oaxaca in Mexico. It is listed as Least Concern on the IUC ...
, mule deer
The mule deer (''Odocoileus hemionus'') is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. Two subspecies of mule deer are grouped into the black-tailed deer.
Unlike the related whit ...
, antelope jackrabbit
The antelope jackrabbit (''Lepus alleni'') is a species of North American hare found in southern Arizona and northwestern Mexico that occupies dry desert areas.
Behaviour
It is most active during twilight ( crepuscular) and during the night ( no ...
, burrowing owl
The burrowing owl (''Athene cunicularia''), also called the shoco, is a small, long-legged owl found throughout open landscapes of North and South America. Burrowing owls can be found in grasslands, rangelands, agricultural areas, deserts, or an ...
, greater roadrunner
The greater roadrunner (''Geococcyx californianus'') is a long-legged bird in the cuckoo family, Cuculidae, from the Aridoamerica region in the Southwestern United States and Mexico. The scientific name means "Californian earth-cuckoo". Along wit ...
, western diamondback rattlesnake
The western diamondback rattlesnake or Texas diamond-backWright AH, Wright AA. (1957). ''Handbook of Snakes''. Comstock Publishing Associates. (7th printing, 1985). . (''Crotalus atrox'') is a rattlesnake species and member of the viper family, ...
, and elf owl
The elf owl (''Micrathene whitneyi'') is a small grayish-brown owl about the size of a sparrow found in the Southwestern United States, central Mexico, and the Baja California peninsula. It has pale yellow eyes highlighted by thin white "eyebrow ...
. There are three hundred fifty bird species, 20 amphibian species, over 100 reptile species, 30 native fish species, over 1000 native bee species, and more than 2,000 native plant species found in the desert area. The Sonoran Desert area southeast of Tucson
, "(at the) base of the black ill
, nicknames = "The Old Pueblo", "Optics Valley", "America's biggest small town"
, image_map =
, mapsize = 260px
, map_caption = Interactive map ...
and near the Mexican border is vital habitat for the only population of jaguar
The jaguar (''Panthera onca'') is a large cat species and the only living member of the genus '' Panthera'' native to the Americas. With a body length of up to and a weight of up to , it is the largest cat species in the Americas and the th ...
s living within the United States. The Colorado River Delta
The Colorado River Delta is the region where the Colorado River flows into the Gulf of California (also known as the Sea of Cortez) in eastern Mexicali Municipality in the north of the state of Baja California in northwesternmost Mexico. The d ...
was once an ecological hotspot within the Sonoran desert due to the Colorado river in this otherwise dry area, but the delta has been greatly reduced in extent due to the damming and use of the river upstream. Species that have higher heat tolerance are able to thrive in the conditions of the Sonoran Desert. One such insect species that has evolved a means to thrive in this environment is Drosophila ''mettleri'', a Sonoran Desert fly. This fly contains a specialized P450
Cytochromes P450 (CYPs) are a superfamily of enzymes containing heme as a cofactor that functions as monooxygenases. In mammals, these proteins oxidize steroids, fatty acids, and xenobiotics, and are important for the clearance of various compo ...
detoxification system that enables it to nest in the cool region of exudate moistened soil. Thus, the fly is one of few that can tolerate the high desert temperatures and successfully reproduce.
Human population
The Sonoran Desert is home to the cultures of over 17 contemporary Native American tribes, with settlements at American Indian reservations in California
American(s) may refer to:
* American, something of, from, or related to the United States of America, commonly known as the "United States" or "America"
** Americans, citizens and nationals of the United States of America
** American ancestry, pe ...
and Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...
, as well as populations in Mexico.
The largest city in the Sonoran Desert is Phoenix, Arizona
Phoenix ( ; nv, Hoozdo; es, Fénix or , yuf-x-wal, Banyà:nyuwá) is the List of capitals in the United States, capital and List of cities and towns in Arizona#List of cities and towns, most populous city of the U.S. state of Arizona, with 1 ...
, with a 2017 metropolitan population of about 4.7 million. Located on the Salt River in central Arizona, it is one of the fastest-growing metropolitan areas
A metropolitan area or metro is a region that consists of a densely populated urban agglomeration and its surrounding territories sharing industries, commercial areas, transport network, infrastructures and housing. A metro area usually com ...
in the United States. In 2007 in the Phoenix area, desert was losing ground to urban sprawl
Urban sprawl (also known as suburban sprawl or urban encroachment) is defined as "the spreading of urban developments (such as houses and shopping centers) on undeveloped land near a city." Urban sprawl has been described as the unrestricted growt ...
at a rate of approximately per hour.
The next largest cities are Tucson
, "(at the) base of the black ill
, nicknames = "The Old Pueblo", "Optics Valley", "America's biggest small town"
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, in southern Arizona, with a metro area population of just over 1 million,[Table 1: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2000 to July 1, 2006 (CBSA-EST2006-01)](_blank)
, United States Census Bureau
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...
, 2007-04-05. Accessed 2007-09-11 and Mexicali
Mexicali (; ) is the capital city of the Mexican state of Baja California. The city, seat of the Mexicali Municipality, has a population of 689,775, according to the 2010 census, while the Calexico–Mexicali metropolitan area is home to 1,000, ...
, Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...
, with a similarly sized metropolitan population of around 1,000,000. The metropolitan area of Hermosillo
Hermosillo (), formerly called Pitic (as in ''Santísima Trinidad del Pitic'' and ''Presidio del Pitic''), is a city located in the center of the northwestern Mexican state of Sonora. It is the municipal seat of the Hermosillo Municipality, Her ...
, Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...
, has a population close to 900,000. Ciudad Obregón
Ciudad Obregón is a city in southern Sonora. It is the state's second largest city after Hermosillo and serves as the municipal seat of Cajeme, as of 2020, the city has a population of 436,484. Ciudad Obregón is south of the state's norther ...
, Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...
, in the southern part of the desert, has a population of 375,800.
California
The Coachella Valley
, map_image = Wpdms shdrlfi020l coachella valley.jpg
, map_caption = Coachella Valley
, location = California, United States
, coordinates =
, width =
, boundaries = Salton Sea (southeast), Santa Rosa Mountains (southwest), San Jacint ...
, located in the Colorado Desert
California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna.
Geography and geology
The Colorado De ...
section of the Sonoran Desert, has a population of 365,000. Several famous Southern California
Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most po ...
desert resort cities such as Palm Springs
Palm Springs (Cahuilla: ''Séc-he'') is a desert resort city in Riverside County, California, United States, within the Colorado Desert's Coachella Valley. The city covers approximately , making it the largest city in Riverside County by land ...
and Palm Desert
Palm Desert is a city in Riverside County, California, United States, in the Coachella Valley, approximately east of Palm Springs, northeast of San Diego and east of Los Angeles. The population was 48,445 at the 2010 census. The city has been ...
are located here.
During the winter months, from November to April, the daytime temperatures in the Coachella Valley range from 70 °F (21 °C) to 90 °F (32 °C) and corresponding nighttime lows range from 46 °F (8 °C) to 68 °F (20 °C) making it a popular winter resort destination. Due to its warm year-round climate citrus
''Citrus'' is a genus of flowering plant, flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as Orange (fruit), oranges, Lemon, lemons, grapefruits, pomelos, and lim ...
and subtropical fruits such as mangoes, figs, and dates are grown in the Coachella Valley and adjacent Imperial Valley
, photo = Salton Sea from Space.jpg
, photo_caption = The Imperial Valley below the Salton Sea. The US-Mexican border runs diagonally across the lower left of the image.
, map_image = Newriverwatershed-1-.jpg
, map_caption = Map of Imperial ...
. The Imperial Valley has a total population of over 180,000 and has a similar climate to that of the Coachella Valley. Other cities include Borrego Springs
Borrego Springs (''Borrego'', Spanish for "Sheep") is a census-designated place (CDP) in San Diego County, California. The population was 3,429 at the 2010 census, up from 2,535 at the 2000 census, made up of both seasonal and year-round reside ...
, Indio Indio may refer to:
Places
* Indio, Bovey Tracey, an historic estate in Devon, England
* Indio, California, a city in Riverside County, California, United States
People with the name
* Indio (musician), Canadian musician Gordon Peterson
* Índio, ...
, Coachella Coachella may refer to:
* Coachella, California
* Coachella Canal, in California
* Coachella (festival), an annual music and arts festival in California
* "Coachella – Woodstock in My Mind", a 2017 song by Lana del Rey
See also
* Coachell ...
, Calexico
Calexico () is a city in southern Imperial County, California. Situated on the Mexican border, it is linked economically with the much larger city of Mexicali, the capital of the Mexican state of Baja California. It is about east of San Diego ...
, El Centro
El Centro (Spanish for "The Center") is a city and county seat of Imperial County, California, United States. El Centro is the largest city in the Imperial Valley, the east anchor of the Southern California Border Region, and the core urban are ...
, Imperial
Imperial is that which relates to an empire, emperor, or imperialism.
Imperial or The Imperial may also refer to:
Places
United States
* Imperial, California
* Imperial, Missouri
* Imperial, Nebraska
* Imperial, Pennsylvania
* Imperial, Texa ...
, and Blythe The name Blythe ( or ) derives from Old English ''bliþe'' ("joyous, kind, cheerful, pleasant"; modern ''blithe''), and further back from Proto-Germanic ''*blithiz'' ("gentle, kind").
People
* Blythe (given name), including a list of people named ...
.
United States–Mexico border region
Straddling the US-Mexican border with low levels of human-installed security, the Sonoran desert is a route for unauthorized entry across the border. The harsh conditions mean that the 3-to-5-day march, usually moving at night to minimize exposure to the heat, sometimes results in death.
Protected areas
There are many National Parks and Monuments; federal and state nature reserve
A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or ...
s and wildlife refuge
A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or ...
s; state, county, and city parks; and government or nonprofit group operated natural history museum
A natural history museum or museum of natural history is a scientific institution with natural history collections that include current and historical records of animals, plants, fungi, ecosystems, geology, paleontology, climatology, and more. ...
s, science research institutes, and botanical garden
A botanical garden or botanic gardenThe terms ''botanic'' and ''botanical'' and ''garden'' or ''gardens'' are used more-or-less interchangeably, although the word ''botanic'' is generally reserved for the earlier, more traditional gardens, an ...
s and desert landscape garden
A garden is a planned space, usually outdoors, set aside for the cultivation, display, and enjoyment of plants and other forms of nature. The single feature identifying even the wildest wild garden is ''control''. The garden can incorporate both ...
s.
* Index: Protected areas of the Sonoran Desert
* Index: Protected areas of the Colorado Desert
;Sonoran Desert protected areas include:
* Arizona–Sonora Desert Museum
* Sonoran Desert National Monument
Sonoran Desert National Monument is south of Goodyear and Buckeye and east of Gila Bend, Arizona. Created by Presidential proclamation on January 17, 2001, the monument is managed by the U.S. Bureau of Land Management as part of the Natio ...
[The ]Sonoran Desert National Monument
Sonoran Desert National Monument is south of Goodyear and Buckeye and east of Gila Bend, Arizona. Created by Presidential proclamation on January 17, 2001, the monument is managed by the U.S. Bureau of Land Management as part of the Natio ...
was created in 2001 in Arizona, to enhance protection of the unique resources of the Sonoran Desert, with .
:Reference
Sonoran Desert National Monument
, Bureau of Land Management, U. S. Department of the Interior. Accessed on line June 17, 2009.
* Boyce Thompson Arboretum State Park
Boyce Thompson Arboretum is the oldest and largest botanical garden in the state of Arizona. It is one of the oldest botanical institutions west of the Mississippi River. Founded in 1924 as a desert plant research facility and “living museum ...
– ''Sonoran Desert flora arboretum''
* Anza–Borrego Desert State Park
* Organ Pipe Cactus National Monument
Organ Pipe Cactus National Monument is a U.S. national monument and UNESCO biosphere reserve located in extreme southern Arizona that shares a border with the Mexican state of Sonora. The park is the only place in the United States where the ...
* Saguaro National Park
Saguaro National Park is an American national park in Pima County, southeastern Arizona. The park consists of two separate areas—the Tucson Mountain District (TMD) about west of the city of Tucson and the Rincon Mountain District (RMD) about ...
* Joshua Tree National Park
Joshua Tree National Park is an American national park in southeastern California, east of San Bernardino and Los Angeles and north of Palm Springs, California, Palm Springs. It is named after the Joshua trees (''Yucca brevifolia'') native to t ...
* Reserva de la Biosfera el Pinacate y Gran Desierto de Altar – ''Pinacate National Park, in Sonora, Mexico''
* Indio Hills Palms State Reserve
* Coachella Valley National Wildlife Refuge
* Cabeza Prieta National Wildlife Refuge
Cabeza Prieta National Wildlife Refuge (CPNWR) is located in southwestern Arizona in the United States, along of the Mexico–United States border. It is bordered to the north and to the west by the Barry M. Goldwater Air Force Range, to the s ...
* Kofa National Wildlife Refuge
The Kofa National Wildlife Refuge is located in Arizona in the southwestern United States, northeast of Yuma and southeast of Quartzsite. The refuge, established in 1939 to protect desert bighorn sheep, encompasses over of the Yuma Desert regi ...
* South Mountain Park
South Mountain Park in Phoenix, Arizona is the largest municipal park in the United States, and one of the largest urban parks in North America and in the world. It has been designated as a Phoenix Point of Pride.
Geography and ecology
South ...
* Sonoran Arthropod Studies Institute
The Sonoran Arthropod Studies Institute (established in 1986) is a non-profit organization, located in the Sonoran Desert in Tucson, Arizona, whose mission is to educate the public about arthropod
Arthropods (, (gen. ποδός)) are invertebra ...
See also
* Chihuahuan Desert
The Chihuahuan Desert ( es, Desierto de Chihuahua, ) is a desert ecoregion designation covering parts of northern Mexico and the southwestern United States. It occupies much of far West Texas, the middle to lower Rio Grande Valley and the lower P ...
* Dust storm
A dust storm, also called a sandstorm, is a meteorological phenomenon common in arid and semi-arid regions. Dust storms arise when a gust front or other strong wind blows loose sand and dirt from a dry surface. Fine particles are transporte ...
* List of deserts by area
This is a list of the largest deserts in the world by area. It includes all deserts above .
Notes
See also
* Desert
* Desertification
* List of deserts by continent
* Polar desert
* Tundra
* United Nations Convention to Combat Deserti ...
* List of ecoregions in the United States (EPA)
This list of ecoregions in the United States provides an overview of United States ecoregions designated by the U.S. Environmental Protection Agency (EPA) and the Commission for Environmental Cooperation (CEC). The CEC was established in 1994 by ...
(the Sonoran Basin and Range is item 81 on the map)
* List of ecoregions in the United States (WWF)
The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country with a high level of endemism across a wide variety of ecosystems.
Terrestrial ecoregi ...
* Mojave Desert
The Mojave Desert ( ; mov, Hayikwiir Mat'aar; es, Desierto de Mojave) is a desert in the rain shadow of the Sierra Nevada mountains in the Southwestern United States. It is named for the indigenous Mojave people. It is located primarily in ...
* Spanish missions in the Sonoran Desert
The Spanish missions in the Sonoran Desert ( es, Misiones jesuíticas en el desierto de Sonora) are a series of Jesuit Catholic religious outposts established by the Spanish Catholic Jesuits and other orders for religious conversions of the Pima ...
* :Mountain ranges of the Sonoran Desert
References
External links
Arizona–Sonora Desert Museum
*
Map of the Sonoran Desert Ecoregion
*
Sonoran Desert and its subdivisions
– ''with photos''.
* ttp://arizonensis.org/sonoran/ The Sonoran Desert Naturalist
Very short overview of Sonoran Desert Geology
International Sonoran Desert Alliance
Sounds of the Sonoran Desert
Parks and recreation areas
Saguaro National Park: official website
Anza–Borrego Desert State: official website
Organ Pipe Cactus National Monument: official website
Arizona State Parks: official website (desert plants)
{{Authority control
Basin and Range Province
Deserts and xeric shrublands in the United States
Deserts and xeric shrublands
Deserts of Arizona
Deserts of California
Deserts of Mexico
Deserts of North America
Deserts of the Lower Colorado River Valley
Ecoregions of Mexico
Ecoregions of the United States
Floristic provinces
Geography of Southern California
Geologic provinces of California
Gulf of California
Madrean Region
Physiographic sections
Physiographic regions of Mexico
Physiographic regions of the United States
Desert, Sonoran
Nearctic ecoregions