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Populus fremontii / Scour Forest | Western Ecology Working Group of...
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Name: Populus fremontii / Scour Forest Reference: Western Ecology Working Group of... Description: This association is known only from the Gila River and San Francisco River watersheds, although it likely occurs to a limited extent elsewhere in southwestern New Mexico and southeastern Arizona. This early- to mid-successional forest association is found within the floodplain of large lowland valleys at elevations ranging from 1220 to 1640 m (4000-5370 feet). Stands occur on low bars or riverwash within the active channel. Sites are seasonally flooded, scouring away much of the undergrowth. Soils are either sandy, moist, weakly developed Entisols (Sandy Aquic Ustipsamments) or riverwash composed of non-cohesive and unconsolidated deposits of sands, gravels, or cobbles. This type is characterized by open to dense, young regeneration stands of Populus fremontii with young Salix gooddingii in the understory. Baccharis salicifolia remains common but not abundant. Forbs and grasses are scattered and variously represented by a suite of wetland indicators that may include Cyperus esculentus, Echinochloa crus-galli, Juncus balticus, Polypogon monspeliensis, Polypogon viridis, Schoenoplectus pungens, Schoenoplectus tabernaemontani, Equisetum arvense, Polygonum lapathifolium, Rorippa sphaerocarpa, and Veronica americana. As a keystone species, the reproduction of Populus fremontii after flooding (and sufficient subsequent base flows) is critical to the sustainability of this community.  Accession Code: VB.CC.28108.POPULUSFREMONTI Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 19-Jul-2004 to: 17-Nov-2014
	status: accepted Community's Parent: Populus fremontii Temporarily Flooded Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Code: CEGL005978   Scientific: Populus fremontii / Scour Forest   Translated: Fremont Cottonwood / Scour Forest   UID: ELEMENT_GLOBAL.2.737514 NatureServe Explorer (convergence) and Synonyms: (undetermined) Populus fremontii / Scour Forest