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Pinus edulis - Juniperus osteosperma / Purshia tridentata Woodland | Western Ecology Working Group of...
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Name: Pinus edulis - Juniperus osteosperma / Purshia tridentata Woodland Reference: Western Ecology Working Group of... Description: This association is common at middle elevations of the pinyon-juniper woodland zone in western Colorado and northwestern New Mexico. Sites occupy ridges, scarps and mesas with generally gentle to moderate slopes. Elevations range from 1800 to 2330 m (5900-7645 feet) and aspect is variable. Soils are often coarse and rocky, may be shallow, and sometimes contain outcrops of the underlying sandstone or limestone. This association is characterized by a mixed canopy of <i>Pinus edulis</i> and <i>Juniperus</i> spp. with a shrub layer dominated by <i>Purshia tridentata</i>. Canopy cover ranges from 10% in the beetle- and fungus-affected woodlands of southwestern Colorado to around 50% in the mountains of northern New Mexico. The canopy sometimes includes arborescent <i>Quercus gambelii</i> in the southern part of the range. The shrub layer may consist almost entirely of <i>Purshia tridentata</i> with between 5 and 25% cover, or more often it is mixed with other shrubs that have at least 1% cover, including <i>Amelanchier utahensis, Artemisia tridentata, Artemisia nova, Cercocarpus montanus, Ephedra viridis, Opuntia polyacantha, Ribes cereum</i>, and <i>Yucca baccata</i>. Graminoids are well-represented to abundant; common species include <i>Pseudoroegneria spicata, Poa fendleriana, Koeleria macrantha, Carex rossii</i>, and <i>Piptatherum micranthum</i>. The forb component of the understory is often diverse but rarely contributes significantly to the overall vegetation cover. Species noted as occurring in this community include <i>Astragalus scopulorum, Eriogonum jamesii, Eriogonum racemosum, Penstemon linarioides ssp. coloradoensis, Petradoria pumila, Phlox</i> spp., and <i>Stenotus acaulis</i>.  Accession Code: VB.CC.31765.CEGL000789 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.2.687220 NatureServe Explorer   Translated: Two-needle Pinyon - Utah Juniper / Antelope Bitterbrush Woodland   Code: CEGL000789   Scientific: Pinus edulis - Juniperus osteosperma / Purshia tridentata Woodland