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Larrea tridentata - Encelia farinosa Shrubland | NatureServe Biotics 2019
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Name: Larrea tridentata - Encelia farinosa Shrubland
Reference: NatureServe Biotics 2019
Description: This creosotebush shrubland association occurs in Arizona, California and Nevada. It is currently described from Grand Canyon National Park and Grand Canyon Parashant National Monument in Arizona. More survey and classification work are needed to fully characterize this type. It primarily occurs on sideslopes but can occur on a variety of other landforms, including talus slopes, alluvial fans, and colluvium, and usually occurs at 375 to 575 m (1300-1850 feet) elevation, but can be found as high as 675 m (2250 feet). This association shows some preference for south- or west-facing slopes but does occur across all aspects. It is typically found on moderate to steep gradients (25-45°), but can occur on gentler slopes (less than 20°) as well. Soils are well- to rapidly-drained silty or sandy loams, and the bedrock is typically limestone. Vegetation is codominated by <i>Larrea tridentata</i> and <i>Encelia farinosa</i>. In addition <i>Fouquieria splendens</i> occasionally occurs in the tall-shrub stratum at low cover. In dense stands, <i>Encelia farinosa</i> cover can be as high as 40%, although it is usually much lower. <i>Ferocactus cylindraceus</i> and <i>Ephedra aspera</i> are typical in the short-shrub stratum. <i>Ambrosia dumosa</i> and <i>Opuntia basilaris</i> occasionally occur in the very sparse dwarf-shrub layer. <i>Vulpia octoflora</i> and <i>Dasyochloa pulchella</i> are common in a meager graminoid layer. A variety of species, including <i>Plantago ovata, Cryptantha</i> spp., and <i>Argythamnia neomexicana</i>, sporadically occur in the forb layer. 
Accession Code: urn:lsid:vegbank.org:commConcept:31857-{23CBCA00-1A4A-4F27-A50B-9063DA121FA4}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 06-Jan-2017 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.683081 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL002955
  Translated: Creosotebush - Brittlebush Shrubland
  Scientific: Larrea tridentata - Encelia farinosa Shrubland
(convergence) and Synonyms:
(similar) Larrea tridentata - Encelia farinosa Shrubland [Placeholder]
(similar) CEGL002955
(similar) Larrea tridentata - Encelia farinosa Shrubland