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Populus angustifolia Temporarily Flooded Woodland Alliance | Western Ecology Working Group of...
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Name: Populus angustifolia Temporarily Flooded Woodland Alliance Reference: Western Ecology Working Group of... Description: This riparian alliance occurs in the lower to mid-montane floodplains and streams throughout much of the western U.S. Sites include narrow benches along narrow stream channels and on large floodplains along broad, meandering rivers. Stands are usually found between 0.5-2 m above the stream channel. The alluvial soils are highly permeable with large amounts of coarse fragments in the subsurface horizons. Vegetation within this alliance is characterized by a typically open tree canopy and is dominated by Populus angustifolia with 20-70% cover. Other trees can include Acer negundo, Juniperus scopulorum, Picea pungens, Pinus ponderosa, and Picea engelmannii in the Rocky Mountains. The shrub layer can be very dense and diverse with 10-80% cover of Cornus sericea, Alnus incana, Amelanchier utahensis, Rosa woodsii, Acer glabrum, Quercus gambelii, Salix spp., Crataegus rivularis, or Lonicera involucrata. Juniperus deppeana, Brickellia californica, and Alnus oblongifolia have been reported from stands in New Mexico and Arizona, as has significant cover of woody vines such as Vitis arizonica, Parthenocissus quinquefolia (= Parthenocissus inserta), Clematis ligusticifolia, and Humulus lupulus var. lupuloides (= Humulus americanus). The forb layer is moderately dense to absent and includes species such as Maianthemum stellatum, Heracleum maximum (= Heracleum lanatum), Achillea millefolium, and Osmorhiza depauperata. Graminoid cover is insignificant in New Mexico and Arizona. Diagnostic of this alliance is the dominance of Populus angustifolia in the tree canopy in woodlands that are briefly flooded during the growing season.  Accession Code: VB.CC.17989.POPULUSANGUSTIF Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Populus angustifolia Temporarily Flooded Woodland Alliance   Translated: Narrowleaf Cottonwood Temporarily Flooded Woodland Alliance   UID: HIGHER_CLASS_UNIT.2.125415 NatureServe Explorer   Code: A.641