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Published byBethany Stone Modified over 9 years ago
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Deserts, Nevada Ecology
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Desert Biome Less than 25 cm rain/year May be hot or cold Animals: scorpions, lizards, snakes, birds Plants: cacti, sagebrush, grasses Both flora and fauna are adapted to conserve water.
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Fun Facts 3,872 known species in Nevada 2,875 are plant species 309 species found only in Nevada Only 10 states are richer in biodiversity than Nevada *Endemic: term used for a native species not found anywhere else
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*Major Ecoregions *Great Basin *Mojave Desert *Columbia Plateau *Sierra Nevada Fun Fact: 68 Percent of NV is covered by which ecoregion??
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Great Basin Ecoregion *“Cold desert” - Most precipitation falls in the winter *Landlocked drainage basin - Rivers have no natural outlet to the ocean *Bordered by mountains (Rockies, Sierra Nevada)
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Great Basin Fauna rattlesnake sound http://www.californiahe rps.com/snakes/pages/ rattlesnakesounds.html *Rattlesnake *Mountain lion Lizards Bighorn sheep
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Mojave Ecoregion *Located in southern NV (Las Vegas) Fewer mountain ranges and broader valleys than Great Basin Temperatures range from 110 degrees in the summer to 25 degrees in the winter *Receives less water than the other NV ecoregions Usually less than 5 inches of rain, can get several feet of snow at the higher elevations
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Lower Sonoran (below 400ft) Upper Sonoran (4000-5000ft) *Joshua Tree White Bursage *Yucca Also numerous cacti throughout the ecoregion *Desert Tortoise Barrel Cactus Flora and Fauna of the Mojave Creosote
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Columbia Plateau *Located in northern NV *Contains tablelands, intermountain basins, dissected lava plains and scattered mountains *Cooler climate
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*Mule Deer, Antelope, Elk Lower elevations – *juniper Higher elevations – *Douglas fir and aspen Flora and Fauna of the Columbia Plateau
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Sierra Nevada Ecoregion *Higher in elevation, receive more precipitation than the other regions Rivers like Truckee and Walker provide water to Great Basin Many mountain lakes and meadow/prairie areas At the highest elevations, alpine conditions exist
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Eastern slopes – white fir and lodgepole pine Western slops - Jeffery pine and lodgepole pine Higher elevations – red fir, mountain hemlock, western white pine Flora of the Sierra Nevada *Primarily Coniferous forest
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Fauna of the Sierra Nevada Black Bears Clark’s Nutcracker
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