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Larrea tridentata - Encelia farinosa - Ambrosia dumosa Desert Shrubland | NatureServe Biotics 2019
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Name: Larrea tridentata - Encelia farinosa - Ambrosia dumosa Desert Shrubland Reference: NatureServe Biotics 2019 Description: This association is found at low to mid elevations in the northern Colorado Desert, Mojave Desert and southern Great Basin in Arizona, California and southern Nevada. Vegetation is characterized by a sparse to open shrub canopy (5-23% cover) codominated by <i>Encelia farinosa</i> and <i>Larrea tridentata</i> with <i>Ambrosia dumosa</i> characteristically present. Other shrubs frequently present include <i>Acacia greggii, Bebbia juncea, Cylindropuntia</i> spp., <i>Ferocactus cylindraceus, Krameria</i> spp., <i>Nolina bigelovii, Opuntia</i> spp., <i>Peucephyllum schottii</i>, and <i>Viguiera parishii</i>. If present, the herbaceous layer is sparse to moderate and composed of grasses and forbs such as <i>Eriogonum inflatum, Cryptantha</i> spp., and <i>Pleuraphis rigida</i>. Stands occur primarily in uplands, including rocky and erosional highlands, alluvial fans, plains as well as bottomlands with high cover of bedrock outcrop, boulders, cobbles, and/or gravel. Sites occur on gentle to steep slopes (to 40°) often on hot southerly aspects ranging from 182-1100 m elevation. Soils are variable in texture, ranging from sand to clays with high rock content. The rock component is a variable mixture of bedrock, boulders, cobbles and gravel with low to moderate or high cover of each depending on site and derived from a variety of typically noncalcareous parent materials. Disturbance levels in stands are generally low with rarely high levels of disturbance from exotic species competition and moderate levels of disturbance from vandalism/dumping/litter.  Accession Code: urn:lsid:vegbank.org:commConcept:34439-{D7F9F94E-2824-4A07-B1D5-8E22BAD2C63D} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 28-Nov-2016 to: ongoing
	status: accepted Community's Parent: Larrea tridentata - Fouquieria splendens Upper Bajada & Rock Outcrop Desert Scrub Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.971736 NatureServe Explorer   Code: CEGL005766   Translated: Creosotebush - Brittlebush - Burrobush Desert Shrubland   Scientific: Larrea tridentata - Encelia farinosa - Ambrosia dumosa Desert Shrubland