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Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland | Western Ecology Working Group of...
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Name: Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland
Reference: Western Ecology Working Group of...
Description: This woodland community occurs in the Willamette Valley of northwestern Oregon, south into California and probably north into Washington. Stands are most common on south and western aspects on low slopes (<20%). Soils are most often sedimentary in origin. Examples of this community are usually composed of younger <i>Quercus garryana</i> and <i>Pseudotsuga menziesii</i> forming a closed-canopy. <i>Quercus garryana</i> and <i>Pseudotsuga menziesii</i> dominate the tree canopy. The understory cover is dominated by <i>Toxicodendron diversilobum</i> (40-95%) with lesser amounts of <i>Polystichum munitum</i> (0-58%), <i>Festuca rubra</i> (2%), and introduced species including <i>Rosa eglanteria</i> (5%), <i>Holcus lanatus</i> (2%), <i>Poa pratensis</i> (5%), <i>Agrostis</i> spp. (2%) and <i>Dactylis glomerata</i> (3%). <i>Quercus garryana</i> seedlings accounted for 6% cover while no <i>Pseudotsuga menziesii</i> are reported in plots, but are probably present. The codominance of mature <i>Pseudotsuga menziesii</i> is likely a result of the suppression of fires that normally would have maintained an oak woodland free of substantial conifer cover. 
Accession Code: VB.CC.32989.CEGL000928
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.2.686627 NatureServe ExplorerNatureServe Explorer logo
  Translated: Douglas-fir - Oregon White Oak / Pacific Poison-oak Woodland
  Scientific: Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland
  Code: CEGL000928