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Achnatherum thurberianum - Bromus tectorum Ruderal Grassland | NatureServe Biotics 2019
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Name: Achnatherum thurberianum - Bromus tectorum Ruderal Grassland
Reference: NatureServe Biotics 2019
Description: This herbaceous vegetation association is dominated by <i>Achnatherum thurberianum</i>, a native perennial bunchgrass. <i>Bromus tectorum</i>, an introduced annual grass, is always present and may codominate. Total vegetation cover ranges from 10 to 70%. Shrubs may occur sporadically with low densities. <i>Artemisia tridentata ssp. wyomingensis, Chrysothamnus viscidiflorus</i>, and <i>Purshia tridentata</i> are the most constant native shrubs in this association. In addition to <i>Achnatherum thurberianum, Pseudoroegneria spicata</i> and <i>Pascopyrum smithii</i> are the most frequently occurring and abundant native grasses in this community type. Several native perennial and annual forb species may also occur with sparse cover and variable species composition across stands of this vegetation type. Non-native forb species are often common, but again, species composition is variable. This association occurs on flat to steeply sloping upland sites. Sites with little slope tend to have deeper soils while those with steeper slopes have shallow to moderately deep soils. Soil texture is loam, sandy loam, or clay loam, and may be highly variable from one stand to another. This association often occurs on or near sites that have been disturbed. 
Accession Code: urn:lsid:vegbank.org:commConcept:34229-{3F1334F1-AB24-4F14-A6F5-B77B026EEC29}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 04-Apr-2017 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.947903 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL005470
  Translated: Thurber's Needlegrass - Cheatgrass Ruderal Grassland
  Scientific: Achnatherum thurberianum - Bromus tectorum Ruderal Grassland