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Pseudotsuga menziesii / Spiraea betulifolia Forest | Western Ecology Working Group of...
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Name: Pseudotsuga menziesii / Spiraea betulifolia Forest Reference: Western Ecology Working Group of... Description: This montane to lower subalpine forest association is known from the central and northern Rocky Mountains from northwestern Wyoming, to eastern Oregon, Idaho and western Montana, and extending into Canada. Elevations range from 1000 to 2500 m (3300-8100 feet). Stands occur on a variety of sites from steep colluvial slopes to gentle rolling terrain on relatively warm, dry sites. Sites at lower elevation and latitude are typically restricted to northerly aspects or limestone substrate. Higher elevation sites occur on a variety of aspects with the most northerly stands restricted to dry southern aspects. Parent materials are various. Soils tend to be coarser-textured, gravelly loam or sandy loam. Tree litter, often 4-6 cm deep, dominates the ground cover. Vegetation is characterized by an overstory tree canopy dominated by Pseudotsuga menziesii with Spiraea betulifolia prominent in the understory. Pinus ponderosa may be codominant in the overstory tree canopy, and Pinus contorta or Populus tremuloides may be present in the subcanopy. Spiraea betulifolia is a major component in the short-shrub layer with Amelanchier alnifolia, Mahonia repens, or Paxistima myrsinites sometimes abundant. Other common shrubs include Acer glabrum, Lonicera utahensis, Prunus virginiana, Salix scouleriana, Shepherdia canadensis, Sorbus scopulina, Symphoricarpos oreophilus, or Symphoricarpos albus. The sparse to moderately dense herbaceous layer may be dominated by graminoids Calamagrostis rubescens, Carex geyeri, Festuca idahoensis, or Pseudoroegneria spicata, with a variety of forbs.  Accession Code: VB.CC.24088.PSEUDOTSUGAMENZ Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Pseudotsuga menziesii Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Douglas-fir / Shinyleaf Meadowsweet Forest   UID: ELEMENT_GLOBAL.2.688247 NatureServe Explorer   Code: CEGL000457   Scientific: Pseudotsuga menziesii / Spiraea betulifolia Forest   Common: Douglas-fir / Shinyleaf Spiraea Forest (convergence) and Synonyms: (undetermined) Pseudotsuga menziesii / Spiraea betulifolia Forest