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Populus tremuloides / Robinia neomexicana Woodland | Western Ecology Working Group of...
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Name: Populus tremuloides / Robinia neomexicana Woodland Reference: Western Ecology Working Group of... Description: This quaking aspen woodland association is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs from 2608 to 2689 m (8556-8822 feet) elevation on the plateau and on adjacent upper sideslopes in fairly recently burned areas. Slopes are typically moderate (10°), aspects tend to be northwest-facing, and soils are silt loams or sandy loams. This vegetation type occurs in areas that have experienced mid- to high-severity fires several decades ago. <i>Populus tremuloides</i> ubiquitously dominates the canopy layer; however, individuals are commonly less than 5 m in height. Previously extant conifers have experienced close to 100% mortality in these stands, but in the case of several surviving individuals, the <i>Populus tremuloides</i> layer may appear as a subcanopy. Vigorous regeneration of <i>Robinia neomexicana</i> also characterizes this vegetation type. <i>Robinia neomexicana</i> can appear as either a tall shrub or short shrub, depending upon the duration since the last fire event. <i>Sambucus nigra</i> is another frequent short shrub. <i>Mahonia repens</i> commonly occurs, but other dwarf-shrubs are infrequent. <i>Carex rossii</i> and <i>Carex siccata</i> are common members of a graminoid component. Forb cover is typically fairly sparse; however, <i>Chenopodium</i> sp., <i>Machaeranthera canescens, Solidago velutina</i>, and <i>Chamerion angustifolium</i> are common. Tree seedlings are essentially absent, as the duration since fire events has allowed the <i>Populus tremuloides</i> to mature. This vegetation type generally occurs in a mosaic among other regenerating mixed-conifer types and occasionally among mature, intact mixed-conifer stands.  Accession Code: VB.CC.31683.CEGL005503 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.2.835317 NatureServe Explorer   Translated: Quaking Aspen / New Mexico Locust Woodland   Scientific: Populus tremuloides / Robinia neomexicana Woodland   Code: CEGL005503