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A.1034 | EcoArt 2002
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Name: A.1034
Reference: EcoArt 2002
Description: Shrublands in this southwestern alliance occur along drainages that dissect bajadas and mesas in the Chihuahuan and Sonoran deserts. Elevations range from 640-1030 m. Stands are restricted by the arid climate to arroyo riparian zones and adjacent floodplains. The alluvial soils are generally sandy often with cobbles and boulders. These shrublands utilize moisture from the water table and are dependent on the intermittent flows and flooding of the channel to supplement soil moisture and maintain the groundwater levels. The sparse to moderately dense shrub layer is dominated by ~Hymenoclea monogyra$ usually with significant densities of ~Baccharis sarothroides$. ~Ambrosia ambrosioides$ is also typically present in lesser amounts. Less frequent or abundant shrubs include ~Acacia greggii, Parkinsonia microphylla, Celtis pallida, Eriogonum fasciculatum, Olneya tesota$, and ~Prosopis velutina$. The herbaceous layer is typically sparse. Two common herbs are ~Mentzelia pumila$ and ~Polanisia dodecandra ssp. trachysperma (= Polanisia trachysperma)$. Adjacent vegetation includes stands of ~Prosopis$ spp. bosques or desertscrub dominated by ~Larrea tridentata$ or ~Prosopis$ spp. 
Accession Code: VB.CC.804.A1034
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:   Scientific: HYMENOCLEA MONOGYRA SHRUBLAND ALLIANCE
  Code: A.1034
  Common: Single-whorl Cheesebush Shrubland Alliance
(convergence) and Synonyms:
(undetermined) Hymenoclea monogyra Shrubland Alliance