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Larrea tridentata - Encelia farinosa Shrubland | Western Ecology Working Group of...
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Name: Larrea tridentata - Encelia farinosa Shrubland Reference: Western Ecology Working Group of... Description: This creosotebush shrubland association is currently described from Grand Canyon National Park and Grand Canyon-Parashant National Monument in Arizona and is reported from California. 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 fasciculata</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: VB.CC.31647.CEGL002955 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.683081 NatureServe Explorer   Translated: Creosotebush - Brittlebush Shrubland   Scientific: Larrea tridentata - Encelia farinosa Shrubland   Code: CEGL002955