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Artemisia arbuscula ssp. longiloba Steppe & Shrubland Alliance | NatureServe Biotics 2019
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Name: Artemisia arbuscula ssp. longiloba Steppe & Shrubland Alliance
Reference: NatureServe Biotics 2019
Description: This shrub-herbaceous alliance occurs in the Intermountain West, into the southern Rocky Mountains and in the western Great Plains. The structure of these stands may be shrub-herbaceous or shrub-dominated. The shrub layer may be sparse to open and dominated by the low shrub <i>Artemisia arbuscula ssp. longiloba</i>. Shrub associates include <i>Artemisia nova, Artemisia tridentata ssp. vaseyana, Artemisia tridentata ssp. wyomingensis, Artemisia tripartita, Chrysothamnus viscidiflorus, Gutierrezia sarothrae</i>, and <i>Purshia tridentata</i>. Perennial grasses are dominant in the understory and may have sparse to very dense cover where they are more prominent than shrubs. Dominant to common grass species include <i>Danthonia parryi, Elymus lanceolatus, Festuca idahoensis, Festuca thurberi, Pascopyrum smithii, Poa secunda</i>, and <i>Pseudoroegneria spicata</i>. Other perennial grasses that may be present include <i>Achnatherum hymenoides, Elymus elymoides, Hesperostipa comata</i>, and <i>Koeleria macrantha</i>. Forb cover is typically minor. 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. Diagnostic of this alliance is a moderate (&gt;20% cover) perennial graminoid layer with an <i>Artemisia arbuscula ssp. longiloba</i>-dominated low-shrub layer that has 10-40% cover. At least 40% of the total shrub cover is <i>Artemisia arbuscula ssp. arbuscula</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:38508-{E31B3E72-5F71-4321-8DF6-DF3B1B5E7B57}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 14-Mar-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899345 NatureServe ExplorerNatureServe Explorer logo
  Code: A3221
  Translated: Alkali Sagebrush Steppe & Shrubland Alliance
  Common: Alkali Sagebrush Steppe & Shrubland
  Scientific: Artemisia arbuscula ssp. longiloba Steppe & Shrubland Alliance