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A.1036 | EcoArt 2002
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Name: A.1036
Reference: EcoArt 2002
Description: Shrublands included in this Sonoran Desert alliance occur on upland flats above bajada and arroyo shrublands. Elevation ranges from 480-760 m. Climate is arid and hot with half to two-thirds of the 18-32 cm of annual precipitation falling during the summer monsoon season. Substrates are alluvium derived from granite and schist. Soils are shallow, gravelly clay and clay loams. The dominant shrub is ~Acacia greggii$. Other characteristic species are ~Parkinsonia microphylla, Opuntia acanthocarpa, Larrea tridentata, Ericameria laricifolia, Krameria grayi, Acacia constricta$, and ~Prosopis velutina$. The dominance of ~Acacia greggii$ and the lack of ~Lycium exsertum$ and ~Ambrosia deltoidea$ are key characteristics that separate these shrublands from the more common ~Ambrosia deltoidea$-dominated bajada shrublands. The herbaceous layer is typically sparse and includes seasonally present annual forbs such as ~Lasthenia californica$. Adjacent vegetation is composed of shrublands usually dominated by ~Ambrosia deltoidea$. 
Accession Code: VB.CC.806.A1036
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: III.B.3.N.a
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Code: A.1036
  Scientific: ACACIA GREGGII SHRUBLAND ALLIANCE
  Common: Catclaw Acacia Shrubland Alliance
(convergence) and Synonyms:
(undetermined) Acacia greggii Shrubland Alliance