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Populus balsamifera ssp. trichocarpa / Calamagrostis canadensis Riparian Forest | NatureServe Biotics 2019
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Name: Populus balsamifera ssp. trichocarpa / Calamagrostis canadensis Riparian Forest Reference: NatureServe Biotics 2019 Description: This association is currently known from one low-elevation site in Waterton Lakes National Park, Alberta. It was sampled at 1440 m (4721 feet) on a gently sloping fluvial fan. The stand occurs on temporarily flooded, but well-drained, Orthic Humic Regosol soil. Multi-aged <i>Populus balsamifera ssp. trichocarpa</i> dominates this association, with 20% cover in the tree canopy and up to 10% cover in the subcanopy and young tree layers. <i>Populus tremuloides</i> is subdominant, with up to 10% cover in both canopy and reproduction layers. <i>Symphoricarpos occidentalis</i> dominates a short-shrub layer with 30% cover, while <i>Rosa woodsii</i> and <i>Spiraea betulifolia</i> are also present. Tall grasses dominate the herbaceous layer, although a diverse mix of both tall and ground-layer forbs are also present. The most important grasses are <i>Calamagrostis canadensis</i> and <i>Elymus glaucus</i>, each with 15% cover, and <i>Phleum pratense</i> with 10% cover. The most abundant forbs are <i>Cirsium arvense, Chamerion angustifolium, Eucephalus engelmannii</i>, and <i>Galium triflorum</i>. Less abundant forbs include <i>Actaea rubra, Fragaria virginiana, Geranium richardsonii, Heracleum maximum</i>, and <i>Viola canadensis</i>. The ground cover is primarily litter and duff with 5% cover of mosses.  Accession Code: urn:lsid:vegbank.org:commConcept:34500-{06723683-DC17-4D8A-9484-CE20D520F20F} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 06-Apr-2012 to: ongoing
	status: accepted Community's Parent: Populus balsamifera ssp. trichocarpa Northern Rocky Mountain Riparian Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.731044 NatureServe Explorer   Code: CEGL005845   Translated: Black Cottonwood / Bluejoint Riparian Forest   Scientific: Populus balsamifera ssp. trichocarpa / Calamagrostis canadensis Riparian Forest (convergence) and Synonyms: (similar) Populus balsamifera ssp. trichocarpa / Calamagrostis canadensis Forest