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Yucca brevifolia Wooded Shrubland Alliance | Western Ecology Working Group of...
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Name: Yucca brevifolia Wooded Shrubland Alliance Reference: Western Ecology Working Group of... Description: These extremely xeromorphic, succulent shrublands of the Mojave Desert are found on gentle alluvial fans. Soil types and elevation limit the distribution of the vegetation. Soils are colluvial or alluvial deposits and have textures that are sandy, loamy, or gravelly. Slopes are gentle to moderate, and all aspects can support this vegetation. Annual precipitation varies from 4-20 cm, and summer droughts are typical. The vegetation in this alliance contains a wide diversity of lifeforms: sclerophyllous evergreen trees and shrubs, microphyllous evergreen shrubs, semi-deciduous shrubs, semi-succulents and succulents. The vegetation is characterized by an emergent (up to 13 m tall) and typically abundant Yucca brevifolia layer over a shrub-dominated understory layer. Yucca brevifolia must be evenly distributed with over 1% total cover (Keeler-Wolf and Thomas 2000). Emergent Quercus turbinella, Pinus monophylla or Juniperus spp. may be present, but have less than 1% cover. Shrub and ground layers are variable. Shrub species may include Artemisia tridentata, Chrysothamnus viscidiflorus, Coleogyne ramosissima, Ephedra nevadensis, Eriogonum fasciculatum, Larrea tridentata, Lycium andersonii, Salazaria mexicana, Tetradymia axillaris, and Yucca schidigera. The ground layer contains cacti, perennial grasses, and seasonal annuals.  Accession Code: VB.CC.27415.YUCCABREVIFOLIA 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: Yucca brevifolia Wooded Shrubland Alliance   Translated: Joshua Tree Wooded Shrubland Alliance   UID: HIGHER_CLASS_UNIT.2.126600 NatureServe Explorer   Code: A.884