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Populus angustifolia - Acer negundo / Poa pratensis Ruderal Riparian Woodland | NatureServe Biotics 2019
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Name: Populus angustifolia - Acer negundo / Poa pratensis Ruderal Riparian Woodland Reference: NatureServe Biotics 2019 Description: This association is found in the Pecos and Gila river basins of north-central and southwestern New Mexico. It has been found at elevations ranging from 1770 to 2160 m (5800-7075 feet) and occurs in mountainous regions in moderately wide canyons where the river channel cuts through moderately steep to gently sloped terrain. The type can be found on low terraces with coarse to fine alluvial sediments and an undulating surface topography. Flooding is infrequent (every 10 to 25 years), but woody debris or smaller flood debris, stones, and areas of bare ground are common. Soils tend to be moist, young, weakly developed Entisols (Ustifluvents and Udifluvents). Some are more developed, moist Inceptisols (Endoaquepts and Ustochrepts). Generally, soils of this type are moderately drained and have moderate plant-available water (8%). They tend to be loamy but can have a rocky layer with depth. At lower depths soils may be periodically moist between 30 to 70 cm (1-2.5 feet), especially during high water events. This type is characterized in mature stands by a moderately closed canopy (&gt;60%) dominated by <i>Populus angustifolia</i> with <i>Acer negundo</i> as a codominant. Other trees are sparse. Exotic grasses, such as <i>Poa pratensis, Schedonorus pratensis</i>, and <i>Agrostis gigantea</i>, among others, are well-represented and dominate the undergrowth. Shrubs, particularly twining, woody vines such as <i>Clematis ligusticifolia</i> or <i>Parthenocissus quinquefolia</i> are often present but not abundant.  Accession Code: urn:lsid:vegbank.org:commConcept:34613-{8F510E79-D3C0-422A-BA62-06E2AA2FB15B} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 19-Jul-2004 to: ongoing
	status: accepted Community's Parent: Acer negundo - Populus spp. - Picea spp. Ruderal Riparian Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.737530 NatureServe Explorer   Code: CEGL005961   Translated: Narrowleaf Cottonwood - Box-elder / Kentucky Bluegrass Ruderal Riparian Woodland   Scientific: Populus angustifolia - Acer negundo / Poa pratensis Ruderal Riparian Woodland (convergence) and Synonyms: (similar) Populus angustifolia - Acer negundo / Poa pratensis Woodland