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Plants must survive its hot and dry conditions. [2]: 7 Temperatures can be greater than 120 °F (49 °C). [2]: 7 Annual precipitation is sometimes less than 3 inches (7.6 cm). [2]: 7 Density of vegetation gradually diminishes moving from the Arizona Upland into the Colorado Desert proper. [2]: 7
The Sonoran Desert. The Sonoran Desert is a North American desert and ecoregion which covers large parts of the southwestern United States and of northwestern Mexico. With an area of 260,000 square kilometers (100,000 sq mi), it is the hottest desert in Mexico. The western portion of the Mexico–United States border passes through the Sonoran ...
The Sonoran desert wraps around the northern end of the Gulf of California, from Baja California Sur (El Vizcaíno Biosphere Reserve in central and Pacific west coast, Central Gulf Coast subregion on east to southern tip), north through much of Baja California, excluding the central northwest mountains and Pacific west coast, through southeastern California and southwestern and southern ...
The desert extends across much of the northern border of the Gulf of California, spanning more than 100 kilometres (62 mi) east to west and over 50 kilometres (31 mi) north to south. It constitutes the largest continuous wilderness area within the Sonoran Desert.
The life zones that Merriam identified, along with characteristic plants, are as follows: Lower Sonoran (low, hot desert): creosote bush, Joshua tree; Upper Sonoran (desert steppe or chaparral): sagebrush, scrub oak, Colorado pinyon, Utah juniper; Transition (open woodlands): ponderosa pine
The Imperial Dunes in 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 an average annual rainfall of less than 8 inches (200 mm ...
Increasingly frequent and severe heat waves in the Southwest are damaging some desert plants known for thriving in harsh conditions. Saguaro cacti and agave have both suffered in sweltering ...
Flora of the Sonoran Deserts—of southwestern North America, in regions of southern Arizona, southeastern California, and northwestern Mexico. Including the Sonoran Desert and its subregions of the: Colorado Desert , Lechuguilla Desert , Gran Desierto de Altar , Tule Desert , Yuha Desert , and Yuma Desert .