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Populus angustifolia Temporarily Flooded Forest Alliance | Western Ecology Working Group of...
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Name: Populus angustifolia Temporarily Flooded Forest Alliance Reference: Western Ecology Working Group of... Description: Vegetation types in this alliance occur on terraces and floodplains immediately adjacent to streams in the western United States. Elevations range from 1350 m in the Southwest to 2400 m in Colorado. Microtopography is often smooth to gently undulating with slopes between 2 and 5%. Stands generally occur within 1 m of the high water mark, but can also occur on higher terraces, up to 3 m above the channel. Water tables are rarely within 50 cm of the soil surface, and stands are as much as 3-4 m above the stream level. Soil pH levels range from slightly acid to moderately alkaline (pH 6.2-8.4). Soils are typically well-drained with large amounts of coarse fragments in the subsurface horizons. The soil textures are fine sandy loams, clay loams, silty clay loams, and silty clay. Floods and beavers frequently rework soils. Peat deposits, if present, are thin. Vegetation stands within this alliance are defined as cold-deciduous temporarily flooded forests. The tree canopy is dense and dominated by up to 70% cover of Populus angustifolia. Other trees include (0-30% cover each) Populus deltoides, Acer grandidentatum, Salix amygdaloides, and Acer negundo. The shrub layer is dominated by 10-70% cover of Amelanchier alnifolia, Lonicera involucrata, or Rosa woodsii. The herbaceous undergrowth is typically dominated by hay grasses and a sparse forb cover, with 0-20% cover of Maianthemum stellatum and Thalictrum fendleri. Pinus edulis - Juniperus osteosperma woodlands, Pinus ponderosa - Quercus gambelii forests, Quercus gambelii scrub, and Artemisia tridentata and Chrysothamnus spp. shrublands often occur on adjacent hillslopes in the Colorado stands.  Accession Code: VB.CC.18453.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 Forest Alliance   UID: HIGHER_CLASS_UNIT.2.124762 NatureServe Explorer   Translated: Narrowleaf Cottonwood Temporarily Flooded Forest Alliance   Code: A.310