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Populus tremuloides - Pinus contorta / Symphoricarpos oreophilus Forest | Western Ecology Working Group of...
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Name: Populus tremuloides - Pinus contorta / Symphoricarpos oreophilus Forest Reference: Western Ecology Working Group of... Description: This mixed deciduous-evergreen association appears to be adapted to a wide range of environments. It occurs at elevations ranging from 1700 to 3000 m (5700-9800 feet) and does not appear confined by slope, exposure or soil parent materials. Populus tremuloides forms the dominant overstory canopy with an average cover of 55%. Pinus contorta is the only prominent conifer in the tree layer, always present with 22% average cover. Other conifers with less cover include Pseudotsuga menziesii, Picea pungens, and Abies lasiocarpa. Seedlings of both aspen and lodgepole are also usually present. The low-shrub layer is dominated by Symphoricarpos oreophilus with 10-30% cover. Other shrubs present include Shepherdia canadensis, Rosa woodsii, or Paxistima myrsinites. Tall shrubs such as Amelanchier alnifolia and Prunus virginiana may be present but in low abundance, never forming a distinct layer. The herbaceous undergrowth is generally dominated by graminoids such as Calamagrostis rubescens and Carex geyeri. A variety of forbs are usually present; most frequent are Thalictrum fendleri, Lupinus argenteus, Geranium viscosissimum, Osmorhiza berteroi (= Osmorhiza chilensis), and Chamerion angustifolium. The undergrowth may not be abundant but is usually quite diverse.  Accession Code: VB.CC.26724.POPULUSTREMULOI 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: Pinus contorta - Populus tremuloides Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Quaking Aspen - Lodgepole Pine / Mountain Snowberry Forest   UID: ELEMENT_GLOBAL.2.689609 NatureServe Explorer   Scientific: Populus tremuloides - Pinus contorta / Symphoricarpos oreophilus Forest   Code: CEGL000538 (convergence) and Synonyms: (undetermined) Populus tremuloides - Pinus contorta / Symphoricarpos oreophilus Forest