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A.883 | EcoArt 2002
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Name: A.883
Reference: EcoArt 2002
Description: This shrubland alliance occurs in the Sonoran and Colorado deserts on rocky slopes of mountain, hills, and mesas at elevations below 1220 m. Sites have gentle to moderately steep, southwest-facing slopes. Parent material is usually gravelly alluvium derived from basalt. Substrates are generally coarse-textured, shallow, gravelly clay loams. Caliche is often present on the soil surface and the undersides of rocks. This alliance has a sparse to moderately dense canopy codominated by ~Parkinsonia microphylla$ and ~Larrea tridentata$ with ~Fouquieria splendens$ less prominent. There is high diversity of shrubs and dwarf-shrubs such as ~Ayenia microphylla, Calliandra eriophylla, Janusia gracilis, Lycium berlandieri$, and ~Menodora scabra$. The very sparse herbaceous layer is composed of perennial grasses and forbs with annuals seasonally present to occasionally abundant. Common forbs include ~Allionia incarnata, Siphonoglossa longiflora$, and ~Sphaeralcea ambigua$. Cacti are present and may include ~Echinocereus engelmannii$, and ~Opuntia$ spp. Diagnostic of this desert shrubland alliance is the codominance of ~Parkinsonia microphylla$ and ~Larrea tridentata$ with no ~Carnegia gigantea$. 
Accession Code: VB.CC.2512.A883
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.A.5.N.c
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: PARKINSONIA MICROPHYLLA SHRUBLAND ALLIANCE
  Code: A.883
  Common: Yellow Paloverde Shrubland Alliance
(convergence) and Synonyms:
(undetermined) Parkinsonia microphylla Shrubland Alliance