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A.1877 | EcoArt 2002
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Name: A.1877
Reference: EcoArt 2002
Description: This shrubland alliance occurs along drainages in the Powder River Basin of northeastern Wyoming, at elevations ranging from 1300-1400 m. Sites are nearly flat to gently sloping stream terraces approximately 2 m above the channel. These lowland sites may receive overland flow during intense summer thunderstorms, but are well-drained and do not have shallow water tables like many intermittently flooded stands. Soils are alkaline and may be moderately saline. The alliance is characterized by a sparse to moderately dense woody layer dominated or codominated by ~Sarcobatus vermiculatus$. Other shrubby codominants include ~Artemisia cana, Artemisia tridentata$, and ~Collomia linearis$. The sparse to moderately dense herbaceous layer is dominated by medium-tall bunch grasses such as ~Sporobolus airoides$ and ~Pascopyrum smithii$ with ~Bouteloua gracilis, Poa secunda (= Poa juncifolia)$, and ~Nassella viridula$. Forbs are generally sparse except on disturbed weedy sites. The native perennial forbs include ~Astragalus$ spp., ~Glycyrrhiza lepidota, Achillea millefolium, Artemisia ludoviciana, Chenopodium fremontii$, and ~Opuntia polyacantha$. Annual grasses, especially the exotics ~Bromus tectorum$ and ~Bromus japonicus$, may be present to abundant. 
Accession Code: VB.CC.1576.A1877
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: VII.C.4.N.b
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: SARCOBATUS VERMICULATUS INTERMITTENTLY FLOODED SPARSELY VEGETATED ALLIANCE
  Code: A.1877
  Common: Black Greasewood Intermittently Flooded Sparsely Vegetated Alliance
(convergence) and Synonyms:
(undetermined) Sarcobatus vermiculatus Intermittently Flooded Sparsely Vegetated Alliance