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A.2552 | EcoArt 2002
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Name: A.2552
Reference: EcoArt 2002
Description: This shrub herbaceous alliance occurs in the Intermountain West, into the southern Rocky Mountains and in the western Great Plains. Perennial grasses are prominent with ~Artemisia arbuscula ssp. longiloba$ dominating the open to moderately dense low-shrub layer. Stands occur on a variety of landforms, from flats and depressions to slopes and ridges. Soils are generally characterized by a heavy clay subsoil occurring within 25 cm of the soil surface, which restricts rooting depth. Soils are also alkaline and calcareous. The vegetation is characterized by a moderate to dense herbaceous layer dominated by perennial graminoids. Dominant to common grass species include ~Danthonia parryi, Elymus lanceolatus, Festuca idahoensis, Festuca thurberi, Pascopyrum smithii, Poa secunda$, and ~Pseudoroegneria spicata$. Other perennial grasses that may be present include ~Achnatherum hymenoides (= Oryzopsis hymenoides), Elymus elymoides, Hesperostipa comata (= Stipa comata)$, and ~Koeleria macrantha$. Forb cover is typically minor. Shrub associates include ~Artemisia tridentata ssp. wyomingensis, Artemisia tridentata ssp. vaseyana, Artemisia tripartita, Artemisia nova, Chrysothamnus viscidiflorus, Gutierrezia sarothrae$, and ~Purshia tridentata$. Diagnostic of this alliance is a moderate (>20% cover) perennial graminoid layer with an ~Artemisia arbuscula ssp. longiloba$-dominated low-shrub layer that has 10-40% cover. At least 40% of the total shrub cover is ~Artemisia arbuscula ssp. arbuscula$. 
Accession Code: VB.CC.1817.A2552
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 16-Apr-2002 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: V.A.7.N.e
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: ARTEMISIA ARBUSCULA SSP. LONGILOBA SHRUB HERBACEOUS ALLIANCE
  Code: A.2552
  Common: Alkali Sagebrush Shrub Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Artemisia arbuscula ssp. longiloba Shrub Herbaceous Alliance