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Quercus toumeyi Shrubland Alliance | Western Ecology Working Group of...
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Name: Quercus toumeyi Shrubland Alliance Reference: Western Ecology Working Group of... Description: Shrublands included in this alliance occur in the foothills zone of isolated desert mountain ranges in extreme southwestern New Mexico and southeastern Arizona. Elevations range from 1500-1800 m. Most of the mean annual precipitation of approximately 14 cm occurs during the summer months as convectional thunderstorms and during winter as occasional rains. Late spring and early summer are typically dry. Summers are hot and winters can have periods of cold weather and occasional snows. Stands occur on nearly level to moderately steep (to 30%), rocky foothill slopes. Aspects are south to southwest. Soils are gravelly loams and clay loam derived from andesite or rhyolite, with high amounts of surface gravel and rocks (typically over 40%). Stands included in this alliance have a sparse to moderately dense woody layer dominated by the broad-leaved evergreen shrubs Quercus toumeyi and Quercus emoryi, which occasionally reach small tree size. Occasional individuals of the evergreen needle-leaved tree Pinus discolor or the scale-leaved tree Juniperus deppeana may occur. Several other shrubs may be present, particularly succulents such as Agave palmeri, Arctostaphylos pungens, Dasylirion wheeleri, Nolina microcarpa, Opuntia imbricata, Rhus spp., and Yucca baccata. Cover of this layer ranges from 15-30%. The herbaceous layer is sparse to moderately sparse, ranging from 5-20% cover. Perennial grasses are the most abundant species, particularly Bouteloua curtipendula, Bouteloua hirsuta, Muhlenbergia spp., and Schizachyrium cirratum. Many forb species can occur, but have less than 1% cover. Common forbs include Allium cernuum, Artemisia ludoviciana, Macroptilium gibbosifolium, Sida neomexicana, and Trichostema arizonicum. Adjacent upland vegetation is typically woodlands dominated by species of Pinus and Quercus. Vegetation at lower elevations is likely to be desert grasslands.  Accession Code: VB.CC.20117.QUERCUSTOUMEYIS Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Quercus toumeyi Shrubland Alliance   Translated: Toumey Oak Shrubland Alliance   UID: HIGHER_CLASS_UNIT.2.125770 NatureServe Explorer   Code: A.792