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Populus angustifolia / Alnus incana Riparian Woodland | NatureServe Biotics 2019
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Name: Populus angustifolia / Alnus incana Riparian Woodland Reference: NatureServe Biotics 2019 Description: This plant association is found in narrow bands on the floodplains and benches of montane streams (1900-2700 m elevation) in Colorado and New Mexico, primarily in the southern Rocky Mountains. Stands occur on banks and benches along narrow streams with active floodplains in broad valleys and narrow canyons. These narrow streams may be higher gradient, fast-moving or low gradient, highly sinuous stream reaches. Substrates are typically deep sand or shaly sandy loam but may be stratified with finer-textured alluvial layers. The vegetation is characterized by a open to nearly closed deciduous tree canopy of <i>Populus angustifolia</i> with a dense layer of <i>Alnus incana</i> lining the streambank. <i>Populus angustifolia</i> is always present, although sometimes only as a sapling. A variety of riparian and upland tree species may also be present. <i>Alnus incana</i> is the most abundant shrub within the stand with a minimum of 10% cover. Other shrubs may include <i>Salix bebbiana, Salix monticola, Salix drummondiana, Salix ligulifolia, Salix lucida ssp. caudata, Salix exigua, Rosa woodsii, Rubus idaeus, Acer glabrum</i>, and <i>Betula occidentalis</i>. If present, <i>Cornus sericea</i> does not codominate. Herbaceous growth is generally a sparse mixture of mesic and wetland graminoids and forbs.  Accession Code: urn:lsid:vegbank.org:commConcept:31550-{177F90D6-3A17-47E4-BF24-FA733C4870F7} Plot-observations of this Community Concept: 32
	Party Perspective according to: NatureServe (organization) Perspective from: 10-Jan-2006 to: ongoing
	status: accepted Community's Parent: Populus angustifolia Riparian Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687350 NatureServe Explorer   Code: CEGL002642   Translated: Narrowleaf Cottonwood / Gray Alder Riparian Woodland   Scientific: Populus angustifolia / Alnus incana Riparian Woodland (convergence) and Synonyms: (similar) CEGL002642 (similar) Populus angustifolia / Alnus incana Woodland (similar) Populus angustifolia / Alnus incana Woodland