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Populus fremontii / Acer negundo Forest | Western Ecology Working Group of...
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Name: Populus fremontii / Acer negundo Forest Reference: Western Ecology Working Group of... Description: This forested riparian association is known from canyon bottoms in southwestern New Mexico and southern Utah, but it is likely to occur in Arizona, Nevada and California. Stands occur on gently sloping, lower riparian terraces associated with perennial streams. These are sites that flood periodically but not annually. The principal species depend on the water table being within 1 meter of the surface throughout the growing season in order to become established. Once established, both <i>Populus fremontii</i> and <i>Acer negundo</i> are capable of persisting as terraces become isolated from the water table. Soils are coarse, sandy and generally are poorly developed. In this association, <i>Populus fremontii</i> and <i>Acer negundo</i> form moderate to dense canopies, usually accompanied by <i>Juglans major</i> as a codominant in the southern part of the range. There is no structural information for New Mexico occurrences, but other associated woody species in southern New Mexico include <i>Ptelea trifoliata var. angustifolia (= Ptelea angustifolia)</i> and <i>Amorpha fruticosa</i>. In the Colorado Plateau, total canopy cover ranges from 60% to more than 100%. Associated woody understory species include <i>Salix exigua, Rhus trilobata</i>, and <i>Brickellia longifolia</i>. The herbaceous component of the community is variable depending on the site, the depth to water table and the flood frequency.  Accession Code: VB.CC.31175.CEGL000662 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.2.687653 NatureServe Explorer   Translated: Fremont Cottonwood / Box-elder Forest   Scientific: Populus fremontii / Acer negundo Forest   Code: CEGL000662