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Populus angustifolia / Salix irrorata Woodland | Western Ecology Working Group of...
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Name: Populus angustifolia / Salix irrorata Woodland Reference: Western Ecology Working Group of... Description: This riparian woodland association is a new, tentative type representing young, early-seral stands of <i>Populus angustifolia</i> occurring in the transition zone between <i>Populus angustifolia</i> and <i>Populus deltoides</i> in Colorado and the San Francisco River watershed in southwestern New Mexico. Stands are found at or below the high-water mark on streambanks, point bars and sidebars of meandering low-gradient rivers that are flooded perhaps every five years at mid elevations (1700-2200 m). Soils have been reported as sandy-skeletal Oxyaquic Ustifluvents. The association is characterized by 5-40% cover of all age classes of <i>Populus angustifolia</i>, but may include significant cover (4-58%) of <i>Populus deltoides ssp. monilifera</i> in stands in the upper South Platte River Basin of Colorado. <i>Populus x acuminata</i> and <i>Salix amygdaloides</i> may also be present. In New Mexico stands, <i>Populus angustifolia</i> and <i>Populus fremontii</i> codominate a dense tree canopy (&gt;75% cover). <i>Salix irrorata</i> and <i>Salix exigua</i> codominate the shrubby understory. The shrub canopy consists of thick bands of willow along the streambank, mostly <i>Salix irrorata</i> but may include <i>Salix exigua, Salix monticola</i>, and <i>Alnus incana</i>. Herbaceous undergrowth is sparse; however, invasive annual species can be abundant, including <i>Agrostis stolonifera, Poa pratensis, Bromus inermis, Ambrosia artemisiifolia, Chenopodium fremontii, Salsola kali, Sisymbrium altissimum</i>, and <i>Xanthium strumarium</i>.. Native species present may include <i>Rudbeckia laciniata, Carex nebrascensis, Glyceria grandis, Schoenoplectus acutus</i>, and <i>Epilobium</i> spp. Native wetland indicators that have been recorded for the type are <i>Schoenoplectus pungens (= Scirpus pungens)</i> and <i>Equisetum arvense</i>.  Accession Code: VB.CC.32717.CEGL002647 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.688123 NatureServe Explorer   Translated: Narrowleaf Cottonwood / Bluestem Willow Woodland   Code: CEGL002647   Scientific: Populus angustifolia / Salix irrorata Woodland