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Quercus havardii var. tuckeri Shrubland Alliance | NatureServe Biotics 2019
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Name: Quercus havardii var. tuckeri Shrubland Alliance Reference: NatureServe Biotics 2019 Description: The vegetation is dominated by patches of <i>Quercus havardii var. tuckeri</i> shrubs that range in cover from 5 to 85%. Because shrub roots anchor the sandy soil in this erosive habitat, <i>Quercus havardii var. tuckeri</i> shrubs often occupy hummocks of sand as much as a meter high. Associated shrubs include <i>Coleogyne ramosissima, Ephedra viridis, Gutierrezia sarothrae, Opuntia polyacantha</i>, and <i>Shepherdia rotundifolia</i>. The herbaceous layer provides sparse cover. Graminoids present often include <i>Achnatherum hymenoides, Muhlenbergia pungens, Pleuraphis jamesii</i>, and <i>Vulpia octoflora</i>. Scattered forbs may include <i>Cryptantha</i> sp., <i>Hymenopappus filifolius, Lepidium montanum</i>, and <i>Streptanthella longirostris</i>. Scattered <i>Juniperus osteosperma</i> trees are present in some stands. This Colorado Plateau shrubland alliance is currently known from Utah but may extend into western Colorado. Stands are restricted to dunes, sandsheets and pockets of sand on mesas, plateaus and valley bottoms. Sites are generally on flat, gentle slopes, with a few sites on moderately steep (50%) slopes. Elevations range between 1335 and1772 m, and aspect is not a major factor in determining the distribution of this association. Bare ground or loose sand cover most of the unvegetated surface, although in less-disturbed sites biological soil crusts can have as much as 30% cover. Soils are rapidly drained, deep loamy sands and sandy loams derived from alluvium or eolian deposits.  Accession Code: urn:lsid:vegbank.org:commConcept:38377-{F709DA91-06C7-4B79-8037-FEF7239591CC} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 14-Mar-2014 to: ongoing
	status: accepted Community's Parent: Coleogyne ramosissima - Ephedra cutleri - Ephedra torreyana Colorado Plateau Shrubland Group This Community's Level: Alliance This Community's Children: Show/Hide   Quercus havardii var. tuckeri - Eriogonum leptocladon - Artemisia filifolia Sandsheet Shrubland   Quercus havardii var. tuckeri Shrubland		Names:   UID: ELEMENT_GLOBAL.2.899219 NatureServe Explorer   Code: A2654   Translated: Tucker Sand Shinnery Oak Shrubland Alliance   Common: Colorado Plateau Tucker Sand Shinnery Oak Shrubland   Scientific: Quercus havardii var. tuckeri Shrubland Alliance