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Larrea tridentata - Ambrosia dumosa Shrubland | NatureServe Biotics 2019
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Name: Larrea tridentata - Ambrosia dumosa 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 typically occurs on sideslopes, but also occurs on mesas, alluvial fans, and drainage channels at 375 to 500 m (1250-1625 feet) elevation, but can be found as high as 650 m (2100 feet). It is typically found on low gradients (0-10°), across all aspects, but occasionally occurs on steeper slopes (10-20°). Soils are well- to rapidly-drained silty or sandy clays or loams, and the underlying geology is usually limestone or less frequently basalt. Vegetation is characterized by the codominance of the tall shrub <i>Larrea tridentata</i> and the dwarf-shrub <i>Ambrosia dumosa</i>. <i>Ferocactus cylindraceus</i> and <i>Cylindropuntia acanthocarpa</i> occur most frequently in the sparse short-shrub layer. The dwarf-shrub layer also occasionally includes the cactus <i>Opuntia basilaris</i>. <i>Dasyochloa pulchella</i> and <i>Vulpia octoflora</i> are relatively common in a very sparse graminoid layer. <i>Cryptantha</i> spp., <i>Plantago</i> sp., <i>Eriogonum inflatum</i>, and <i>Erodium cicutarium</i> are regularly present in the forb understory. 
Accession Code: urn:lsid:vegbank.org:commConcept:31856-{D2862E87-F988-41D5-81E9-BF57F831FF64}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 06-Jan-2017 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687878 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL002954
  Translated: Creosotebush - Burrobush Shrubland
  Scientific: Larrea tridentata - Ambrosia dumosa Shrubland
(convergence) and Synonyms:
(similar) Larrea tridentata - Ambrosia dumosa Shrubland [Placeholder]
(similar) CEGL002954
(similar) Larrea tridentata - Ambrosia dumosa Shrubland