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Pinus contorta / Calamagrostis rubescens Forest | Western Ecology Working Group of...
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Name: Pinus contorta / Calamagrostis rubescens Forest Reference: Western Ecology Working Group of... Description: This association is found in the upper montane and subalpine zone of the central and northern Rocky Mountains on cool, dry sites. It typically occurs on gentle to moderately steep, lower slopes, benches and valley bottoms where soils are better developed. Soils are gravelly, sandy or silt loams. Ground cover is dominated by litter with low cover of rock and bare ground. The vegetation is characterized by a Pinus contorta-dominated tree canopy with a grassy understory. The tree canopy varies from open to nearly closed (30-90% cover) and often is solely dominated by Pinus contorta. However, in some stands Abies lasiocarpa, Picea engelmannii, Pinus albicaulis, or Pseudotsuga menziesii trees may be present, especially in the subcanopy. Scattered dwarf- and short shrubs are often present, but they seldom form a distinct layer and except for Arctostaphylos uva-ursi have low cover. Common dwarf- and short shrubs may include Amelanchier alnifolia, Mahonia repens, Paxistima myrsinites, Prunus virginiana, Spiraea betulifolia, Symphoricarpos oreophilus, and Vaccinium scoparium. The moderately dense (30-50% cover) herbaceous layer is dominated by the perennial graminoids Calamagrostis rubescens and Carex geyeri. Diagnostic of this association is the dominance of Pinus contorta in the tree canopy with Calamagrostis rubescens dominating the graminoid layer. Also, the cover of Calamagrostis rubescens is greater than Vaccinium scoparium.  Accession Code: VB.CC.24666.PINUSCONTORTACA 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 Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Lodgepole Pine / Pinegrass Forest   UID: ELEMENT_GLOBAL.2.687489 NatureServe Explorer   Code: CEGL000139   Scientific: Pinus contorta / Calamagrostis rubescens Forest   Common: Lodgepole Pine / Pinegrass Forest (convergence) and Synonyms: (undetermined) Pinus contorta / Calamagrostis rubescens Forest