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Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland Reference: NatureServe Biotics 2019 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 (&lt;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. The understory cover is dominated by <i>Toxicodendron diversilobum</i> with lesser amounts of <i>Polystichum munitum, Festuca rubra</i>, and introduced species including <i>Rosa rubiginosa, Holcus lanatus, Poa pratensis, Agrostis</i> spp., and <i>Dactylis glomerata</i>. <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: urn:lsid:vegbank.org:commConcept:29837-{539DC5D2-1501-425A-99AB-F251BE841EC3} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: ongoing
	status: accepted Community's Parent: Quercus garryana - Pseudotsuga menziesii / Toxicodendron diversilobum Forest & Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.686627 NatureServe Explorer   Code: CEGL000928   Translated: Douglas-fir - Oregon White Oak / Pacific Poison-oak Woodland   Scientific: Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland (convergence) and Synonyms: (similar) Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland (similar) Pseudotsuga menziesii - Quercus garryana / Toxicodendron diversilobum Woodland (similar) CEGL000928