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Juniperus scopulorum / Purshia tridentata Woodland | Western Ecology Working Group of...
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Name: Juniperus scopulorum / Purshia tridentata Woodland
Reference: Western Ecology Working Group of...
Description: This woodland association has only been reported from north-central Colorado in Rocky Mountain National Park and northern Arapaho-Roosevelt National Forest. Stands are found on xeric, steep (50-100%), typically south- to west-facing slopes (one east aspect reported) between 2150 and 2600 m (7050-8520 feet) elevation. Substrates are well-drained, poorly developed, coarsely textured, thin soils derived from colluvial and residual parent materials of granite, gneiss and schist. The ground surface area has 40-50% cover of bare soil, exposed rock, and boulder outcroppings. The vegetation is characterized by an open to moderately dense tree canopy dominated by <i>Juniperus scopulorum</i>. <i>Pinus ponderosa</i> and <i>Pseudotsuga menziesii</i> may occasionally occur as scattered individuals. <i>Purshia tridentata</i> dominates the short-shrub layer with 15-25% cover. <i>Rhus trilobata, Leptodactylon pungens, Rubus deliciosus, Artemisia frigida</i>, and <i>Opuntia polyacantha</i> are shrubs that may be present with a cover of less than 2%. If present, <i>Cercocarpus montanus</i> and <i>Artemisia tridentata</i> cover is low (<5%). Forb and graminoid cover is usually higher than for other <i>Juniperus scopulorum</i>-dominated sites. Commonly associated forbs include <i>Heterotheca villosa, Eriogonum umbellatum, Helianthus pumilus, Potentilla fissa (= Drymocallis fissa)</i>, and <i>Artemisia ludoviciana</i>. Common graminoids include <i>Elymus albicans (= Elymus lanceolatus ssp. albicans), Carex rossii, Muhlenbergia montana</i>, and <i>Hesperostipa comata (= Stipa comata)</i>. Diagnostic of this <i>Juniperus scopulorum</i> woodland is the <i>Purshia tridentata</i>-dominated shrub layer. 
Accession Code: VB.CC.33777.CEGL000749
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.2.684938 NatureServe ExplorerNatureServe Explorer logo
  Translated: Rocky Mountain Juniper / Antelope Bitterbrush Woodland
  Scientific: Juniperus scopulorum / Purshia tridentata Woodland
  Code: CEGL000749