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Ambrosia dumosa - Encelia farinosa Dwarf-shrubland | Western Ecology Working Group of...
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Name: Ambrosia dumosa - Encelia farinosa Dwarf-shrubland
Reference: Western Ecology Working Group of...
Description: This white bursage shrubland association 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. This association primarily occurs on sideslopes at approximately 425 to 850 m (1375-2800 feet) elevation; it uncommonly occurs as high as 1050 m (3425 feet). It is typically found on moderately sloping gradients (10-20°), but occasionally occurs on much steeper slopes (30-40 degrees) as well. Soils are well- to rapidly-drained silty or sandy loams that rarely contain clay. The underlying geology is usually limestone, shale, or infrequently basalt or quartzite. Vegetation is characterized by the codominance of the dwarf-shrub <i>Ambrosia dumosa</i> and the short shrub <i>Encelia farinosa</i>. Tall shrubs are rare, but some stands sporadically contain <i>Larrea tridentata</i>. The short-shrub layer frequently includes <i>Ephedra fasciculata</i> and <i>Ferocactus cylindraceus</i>. The cacti <i>Opuntia polyacantha</i> and <i>Opuntia basilaris</i> sporadically occur in the dwarf-shrub stratum. <i>Bromus rubens</i> and <i>Dasyochloa pulchella</i> commonly occur in a very weakly-developed graminoid layer. <i>Eriogonum inflatum</i> and <i>Sphaeralcea grossulariifolia</i> occasionally occur in a relatively sparse forb understory. 
Accession Code: VB.CC.31748.CEGL005061
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.2.840538 NatureServe ExplorerNatureServe Explorer logo
  Translated: Burrobush - Brittlebush Dwarf-shrubland
  Scientific: Ambrosia dumosa - Encelia farinosa Dwarf-shrubland
  Code: CEGL005061