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Abies concolor - Pinus ponderosa / Amelanchier alnifolia Forest | Western Ecology Working Group of...
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Name: Abies concolor - Pinus ponderosa / Amelanchier alnifolia Forest
Reference: Western Ecology Working Group of...
Description: The association is found in south-central Oregon and possibly northeastern California, in mountains between 1525 and 1830 m in the Modoc Plateau - East Cascades ecoregion. These are open forests or occasionally woodlands characterized by large, widely spaced, <i>Pinus ponderosa</i> trees. They occur on all aspects, slopes between 5-55%, primarily on flats or sideslopes. <i>Pinus ponderosa</i> dominates the open canopy, with between 2-50% cover. <i>Abies concolor</i> ranges from 0-30% cover, while <i>Calocedrus decurrens</i> accounts for 0-10% of the cover. All three species are always found in the understory. Shrubs occupy 20% of the cover, with <i>Amelanchier alnifolia, Ceanothus prostratus</i> and <i>Mahonia repens</i> generally present, and with <i>Ceanothus velutinus</i> locally important. <i>Poa wheeleri (= Poa nervosa var. wheeleri)</i> is the most important understory grass, but <i>Festuca idahoensis</i> and <i>Arnica cordifolia</i> may also be important. This association can be distinguished by the combination of <i>Pinus ponderosa, Abies concolor</i>, and <i>Calocedrus decurrens</i> in the tree layer, and <i>Amelanchier alnifolia</i> present in the shrub layer. Similar <i>Abies concolor - Pinus ponderosa</i> associations tend to have more closed canopies, and lack the three characteristic shrubs and <i>Poa nervosa</i>. 
Accession Code: VB.CC.34628.CEGL000014
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.2.684070 NatureServe ExplorerNatureServe Explorer logo
  Translated: White Fir - Ponderosa Pine / Saskatoon Serviceberry Forest
  Scientific: Abies concolor - Pinus ponderosa / Amelanchier alnifolia Forest
  Code: CEGL000014