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Populus tremuloides / Amelanchier alnifolia - Symphoricarpos oreophilus / Bromus carinatus Forest | NatureServe Biotics 2019
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Name: Populus tremuloides / Amelanchier alnifolia - Symphoricarpos oreophilus / Bromus carinatus Forest
Reference: NatureServe Biotics 2019
Description: This mesic aspen forest is most likely a grazing-induced, less rich version of similar associations. It is a mesic forest that occupies low to moderate elevations, from 1965 to 2380 m (6448-7800 feet). It occurs on shallow to moderately steep slopes on all exposures, often on sedimentary sand- or claystone-derived soils. <i>Populus tremuloides</i> is the almost exclusive canopy occupant with 10-80% cover, average about 50%. Conifers may be present in low amounts (&lt;1%). The undergrowth is essentially three strata: tall shrubs, low shrubs, and herbs. <i>Amelanchier alnifolia</i> and <i>Prunus virginiana</i> are the most common and abundant tall-shrub species. <i>Symphoricarpos oreophilus</i> usually dominates the lower shrub layer. The herbaceous undergrowth of this structurally complex community has been altered considerably by grazing. Heavy persistent grazing has reduced forbs and increased less palatable grass species. The herbaceous portion of the undergrowth is a highly variable group of species. Most abundant are tall grass species such as <i>Elymus glaucus, Bromus carinatus</i>, and <i>Elymus trachycaulus</i>. <i>Poa pratensis</i> and <i>Poa wheeleri</i> can also be present in significant amounts (20-40% cover). A wide variety of forbs can occur, but the tall and low forbs that serve as indicators for other community types are never abundant. Most common are <i>Thalictrum fendleri, Geranium viscosissimum, Osmorhiza berteroi, Chamerion angustifolium, Helianthella uniflora, Lupinus</i> spp., <i>Lathyrus</i> spp., and <i>Vicia americana</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:29475-{81990F89-AF85-4D99-B2DB-C7FF55BAD757}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 12-Jul-2004 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.689306 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000566
  Translated: Quaking Aspen / Saskatoon Serviceberry - Mountain Snowberry / California Brome Forest
  Scientific: Populus tremuloides / Amelanchier alnifolia - Symphoricarpos oreophilus / Bromus carinatus Forest
(convergence) and Synonyms:
(similar) CEGL000566
(similar) Populus tremuloides / Amelanchier alnifolia - Symphoricarpos oreophilus / Bromus carinatus Forest
(similar) Populus tremuloides / Amelanchier alnifolia - Symphoricarpos oreophilus / Bromus carinatus Forest