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Quercus garryana - Quercus kelloggii / Toxicodendron diversilobum Woodland | Western Ecology Working Group of...
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Name: Quercus garryana - Quercus kelloggii / Toxicodendron diversilobum Woodland Reference: Western Ecology Working Group of... Description: This a mixed woodland occurs in northern California and southwestern Oregon. Large stands of this community are rare. Generally it is found on valley bottoms or south-facing slopes in a mixed conifer- hardwood matrix. This association is dominated by Quercus garryana and Quercus kelloggii. Many stands show some invasion of conifers, primarily Pseudotsuga menziesii and Pinus ponderosa, but in no stands of this community are conifers found in the canopy. Arbutus menziesii can be codominant in stands, and is occasionally included in the association name. Canopy varies from very open to fairly closed woodlands (15-70%). In high-quality stands, the trees are large and fairly widely spaced. With extended fire suppression, trees become more dense and smaller. The shrub layer is dominated by Toxicodendron diversilobum. On flats and moister aspects, Symphoricarpos albus and Rosa gymnocarpa can be found, in some areas with introduced Rubus species. Grasses dominate the forb layer in good condition stands, with Elymus glaucus, Festuca californica, Melica spp. dominant. Due to impacts of livestock, introduced grasses (Arrhenatherum elatius, Taeniatherum caput-medusae, Cynosurus echinatus, and Dactylis glomerata) and forbs (Anthriscus caucalis (= Anthriscus scandicina), Daucus carota, and Centaurea spp.) are more common understory components. According to historical records, it occurred as a savanna type and a woodland when widespread fires occurred across the landscape. Quercus garryana - Quercus kelloggii savannas are included in this type.  Accession Code: VB.CC.27712.QUERCUSGARRYANA Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Quercus garryana Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Oregon White Oak - California Black Oak / Pacific Poison-oak Woodland   UID: ELEMENT_GLOBAL.2.689932 NatureServe Explorer   Scientific: Quercus garryana - Quercus kelloggii / Toxicodendron diversilobum Woodland   Code: CEGL000931 (convergence) and Synonyms: (undetermined) Quercus garryana - Quercus kelloggii / Toxicodendron diversilobum Woodland