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Populus tremuloides / Alnus incana Forest | Western Ecology Working Group of...
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Name: Populus tremuloides / Alnus incana Forest Reference: Western Ecology Working Group of... Description: This plant association is located in narrow ravines and along first- and second-order streams of the west slope of Colorado at elevations of 2600-2900 m (8400-9600 feet). At the upper end of its elevational range it typically occurs where upland Populus tremuloides forests intermix with riparian shrub vegetation, while at lower elevations it occurs where Populus tremuloides persists only in the riparian zone. The tree canopy has 10-70% cover of Populus tremuloides. Several conifer species can occur, but Populus tremuloides is clearly the dominant tree species. Other tree species that may be present include Pinus contorta (20%), Abies lasiocarpa (10%), Picea pungens (1-10%), and Pseudotsuga menziesii (1-10%). The shrub layer is dominated by 10-70% cover of Alnus incana, which is diagnostic of this riparian type. Other shrubs that may or may not be present in this association include Salix drummondiana, Lonicera involucrata, Rosa woodsii, and Salix bebbiana. The forb layer can be dense and includes Cardamine cordifolia, Mertensia ciliata, Osmorhiza depauperata, and Senecio triangularis. Graminoid cover may include Calamagrostis canadensis, Equisetum arvense, and Carex disperma. The presence of obligate riparian species in the shrub and forb canopies along the immediate streambank distinguishes this riparian plant association from the adjacent upland Populus tremuloides associations.  Accession Code: VB.CC.22970.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: Populus tremuloides Temporarily Flooded Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Quaking Aspen / Speckled Alder Forest   UID: ELEMENT_GLOBAL.2.686302 NatureServe Explorer   Code: CEGL001150   Scientific: Populus tremuloides / Alnus incana Forest (convergence) and Synonyms: (undetermined) Populus tremuloides / Alnus incana Forest