"Great Basin shrub steppe" and "Central Basin and Range ecoregion" redirect here. For desert ecology of northern Nevada and southeastern Oregon, see Northern Basin and Range ecoregion. For more details on the ecology of high elevation in this region, see Great Basin montane forests.
Central Basin and Range Great Basin shrub steppe
Central Basin and Range from space (central-west Nevada region, view due-south)
The Great Basin Desert, as marked on a map by the USGS[1]
Ecology
Realm
Nearctic
Biome
Deserts and xeric shrublands
Borders
Northern Basin and Range (ecoregion) (80)
Sierra Nevada (ecoregion) (5)
Wasatch and Uinta Mountains (ecoregion) (19)
Bird species
204[2]
Mammal species
105[2]
Geography
Country
United States
States
Nevada
Utah
California
Idaho
Oregon
Climate type
Cold desert (BWk) and cold semi-arid (BSk)
Conservation
Habitat loss
90%[3]
Protected
76.62%[2]
The Great Basin Desert is part of the Great Basin between the Sierra Nevada and the Wasatch Range. The desert is a geographical region that largely overlaps the Great Basin shrub steppe defined by the World Wildlife Fund, and the Central Basin and Range ecoregion defined by the U.S. Environmental Protection Agency and United States Geological Survey. It is a temperate desert with hot, dry summers and snowy winters.[4] The desert spans large portions of Nevada and Utah, and extends into eastern California.[5] The desert is one of the four biologically defined deserts in North America, in addition to the Mojave, Sonoran, and Chihuahuan Deserts.[6]
Basin and range topography characterizes the desert: wide valleys bordered by parallel mountain ranges generally oriented north–south. There are more than 33 peaks within the desert with summits higher than 9,800 feet (3,000 m), but valleys in the region are also high, most with elevations above 3,900 feet (1,200 m). The biological communities of the Great Basin Desert vary according to altitude: from low salty dry lakes, up through rolling sagebrush valleys, to pinyon-juniper forests. The significant variation between valleys and peaks has created a variety of habitat niches which has in turn led to many small, isolated populations of genetically unique plant and animal species throughout the region. According to Grayson,[6] more than 600 species of vertebrates live in the floristic Great Basin, which has a similar areal footprint to the ecoregion. Sixty-three of these species have been identified as species of conservation concern due to contracting natural habitats (for example, Centrocercus urophasianus, Vulpes macrotis, Dipodomys ordii, and Phrynosoma platyrhinos).[7][8]
The ecology of the desert varies across geography also. The desert's high elevation and location between mountain ranges influences regional climate: the desert formed by the rain shadow of the Sierra Nevada that blocks moisture from the Pacific Ocean, while the Rocky Mountains create a barrier effect that restricts moisture from the Gulf of Mexico.[9] Different locations in the desert have different amounts of precipitation depending on the strength of these rain shadows. The environment is influenced by Pleistocene lakes that dried after the last ice age: Lake Lahontan and Lake Bonneville. Each of these lakes left different amounts of salinity and alkalinity.
^Soulard, Christopher E. (2012). "20. Central Basin and Range Ecoregion" (PDF). In Sleeter, Benjamin M.; Wilson, Tamara S.; Acevedo, William (eds.). Status and Trends of Land Change in the Western United States—1973 to 2000. U.S. Geological Survey. Professional Paper 1794–A.
^ abc
Hoekstra, J. M.; Molnar, J. L.; Jennings, M.; Revenga, C.; Spalding, M. D.; Boucher, T. M.; Robertson, J. C.; Heibel, T. J.; Ellison, K. (2010). Molnar, J. L. (ed.). The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference. University of California Press. ISBN 978-0-520-26256-0.
^Cite error: The named reference na1305 was invoked but never defined (see the help page).
^"What is the Great Basin?". National Park Service. Retrieved 2015-07-14.
^"Deserts - Great Basin National Park (U.S. National Park Service)".
^ abCite error: The named reference Grayson93 was invoked but never defined (see the help page).
^Cite error: The named reference Soulard was invoked but never defined (see the help page).
^Cite error: The named reference Rowland97 was invoked but never defined (see the help page).
^Cite error: The named reference Rogers82 was invoked but never defined (see the help page).
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