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Gutierrezia sarothrae Dwarf-shrubland Alliance | Western Ecology Working Group of...
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Name: Gutierrezia sarothrae Dwarf-shrubland Alliance Reference: Western Ecology Working Group of... Description: This dwarf-shrubland alliance was described from Utah and Arizona where it occurs on stream terraces, plains, gently sloping hillslopes, ridges, plateaus and bluffs on all aspects. Elevations range from 1350-2000 m. Soils are variable, ranging from sandy loam to clay derived from alluvium or colluvium. Disturbance may be important in maintaining this vegetation community as some stands have been created by chaining of trees and improper grazing by livestock. This broadly defined alliance is characterized by an open to moderately dense dwarf-shrub canopy (10-50% cover) that is dominated by Gutierrezia sarothrae frequently with Opuntia spp. and a sparse to moderately dense herbaceous layer (1-45% cover). Some stands have a diverse woody layer that includes low cover of several shrub species and occasional Pinus edulis or Juniperus osteosperma trees. The herbaceous layer is typically dominated by graminoids with several species present including Achnatherum hymenoides, Aristida purpurea, Bouteloua gracilis, Elymus elymoides, Hesperostipa comata, Pascopyrum smithii, Pleuraphis jamesii, or Sporobolus airoides. There is usually only sparse cover of native forbs like Chamaesyce spp. or Sphaeralcea coccinea; however, introduced species such as Bromus tectorum or Salsola kali may dominate the herbaceous layer of some disturbed stands.  Accession Code: VB.CC.25161.GUTIERREZIASARO Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Jul-2001 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Gutierrezia sarothrae Dwarf-shrubland Alliance   Translated: Snakeweed Dwarf-shrubland Alliance   UID: HIGHER_CLASS_UNIT.2.125729 NatureServe Explorer   Code: A.2528