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Populus tremuloides / Wyethia amplexicaulis Forest | NatureServe Biotics 2019
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Name: Populus tremuloides / Wyethia amplexicaulis Forest Reference: NatureServe Biotics 2019 Description: These park-like deciduous forests occur in the mountains of Utah, Nevada, Idaho, Wyoming, and possibly Colorado. Elevations are mostly below 2100 m. Sites are generally flat to gently sloping (&lt;25%), and soils are typically heavy clays. This association has two canopies, a moderately dense (70% cover) tree canopy that is dominated by <i>Populus tremuloides</i>, and a dense herbaceous layer dominated by <i>Wyethia amplexicaulis</i>. Scattered shrub such as <i>Symphoricarpos oreophilus</i> and <i>Amelanchier alnifolia</i> are often present, but do not form a canopy. Other herbaceous species may include <i>Senecio serra, Hackelia floribunda, Achillea millefolium, Osmorhiza</i> spp., <i>Bromus carinatus, Elymus trachycaulus, Elymus glaucus</i>, and <i>Carex</i> spp. The introduced species <i>Poa pratensis</i> and <i>Taraxacum officinale</i> are common. Because of the simple, open stand structure and the dominance of an unpalatable forb, this type may be the partly the result of historic overgrazing by livestock. Succession to a conifer vegetation type is unlikely in stands of this association because there is little conifer regeneration.  Accession Code: urn:lsid:vegbank.org:commConcept:29531-{391D0305-2CED-48FA-BFB4-2404ADDBE991} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: ongoing
	status: accepted Community's Parent: Populus tremuloides Rocky Mountain Forest & Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.689484 NatureServe Explorer   Code: CEGL000622   Translated: Quaking Aspen / Northern Mule's-ears Forest   Scientific: Populus tremuloides / Wyethia amplexicaulis Forest (convergence) and Synonyms: (similar) CEGL000622 (similar) Populus tremuloides / Wyethia amplexicaulis Forest (similar) Populus tremuloides / Wyethia amplexicaulis Forest