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Poa glauca Wet Meadow Alliance | NatureServe Biotics 2019
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Name: Poa glauca Wet Meadow Alliance
Reference: NatureServe Biotics 2019
Description: This grassland alliance is found in the scablands east of the Cascade Range in the Columbia Basin, portions of the Snake River plain, valleys of the Great Basin and Rocky Mountain. The following description is just from the Columbia Basin and Snake River plain: Elevation ranges from 300-2120 m. Precipitation primarily occurs in the winter as snow or rain, and this moisture is stored in the soil profile and utilized during the typically dry summers. Stands occur on flat to undulating ridgetops, plateaus, plains, and benches on steep canyon slopes. Sites are flat to moderately steep slopes on all aspects, but most common on southern exposures. Stands also occur in soil pockets between rocks on cliffs lining the sides of ravines. Soils are typically shallow, moderately to well-drained, non-calcareous with a high percentage of rock fragments and exposed rock (lithic), and texture varies from sandy loam to clay loam. Rock and moss cover significant amounts of the ground surface often with over 40% cover of each. Vegetation included in this alliance is characterized by the dominance of <i>Poa secunda</i>. Codominant species may include mid grasses such as <i>Aristida purpurea var. longiseta, Danthonia unispicata</i>, and the forbs <i>Balsamorhiza serrata</i> and <i>Lomatium cous</i>. Other associated species may include <i>Elymus elymoides, Sporobolus cryptandrus, Hesperostipa comata, Achillea millefolium, Antennaria</i> spp., <i>Balsamorhiza incana, Erigeron</i> spp., <i>Phlox longifolia, Sedum</i> spp., <i>Trifolium macrocephalum</i>, and <i>Plantago patagonica</i>. Diagnostic of this alliance is the short graminoid layer dominated by <i>Poa glauca</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:38214-{409467BA-98BD-4AAF-BCDF-93FED3233400}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 27-Sep-2013 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899119 NatureServe ExplorerNatureServe Explorer logo
  Code: A1361
  Translated: Glaucous Bluegrass Wet Meadow Alliance
  Common: Western Glaucous Bluegrass Wet Meadow
  Scientific: Poa glauca Wet Meadow Alliance
(convergence) and Synonyms:
(similar) A.1361
(similar) Poa glauca Temporarily Flooded Herbaceous Alliance