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Thuja plicata / Vaccinium membranaceum Forest | NatureServe Biotics 2019
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Name: Thuja plicata / Vaccinium membranaceum Forest
Reference: NatureServe Biotics 2019
Description: This association is restricted to the continentally glaciated portions of Bailey's Okanogan Highlands (M333A) in Washington and adjacent Idaho and British Columbia. It is a mid to upper elevation, large-patch to matrix community and is the highest elevation <i>Thuja plicata</i> type at 800-1580 m (2640-5180 feet). It is usually associated with a volcanic ash layer over glacial till or outwash deposits. Over half of soil samples had a shallow root-restrictive layer. Large hot fires typically preceded initiation of these communities, and repeated underburning occurs in some areas. <i>Pseudotsuga menziesii, Larix occidentalis</i>, and/or <i>Pinus contorta</i> dominate the upper tree canopy, which tends to be less than a closed canopy. The main canopy may or may not have <i>Thuja plicata</i> as a member, although it is always present in the lower canopy. Deciduous shrubs, typically around 1 m tall, characterize the undergrowth. <i>Vaccinium membranaceum</i> (most cover and always present), <i>Rosa gymnocarpa</i>, and <i>Lonicera utahensis</i> are the most common deciduous shrubs. Shorter evergreen shrubs or subshrubs <i>Paxistima myrsinites, Mahonia aquifolium</i>, or <i>Linnaea borealis</i> are usual members of the understory. Forbs are present but always in low cover. <i>Viola orbiculata</i> and <i>Clintonia uniflora</i> are the most frequently encountered. This is a mid-seral community type. 
Accession Code: urn:lsid:vegbank.org:commConcept:29396-{A781CA09-E990-41A5-A3F3-3679129A3607}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.685118 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000487
  Translated: Western Red-cedar / Thinleaf Huckleberry Forest
  Scientific: Thuja plicata / Vaccinium membranaceum Forest
(convergence) and Synonyms:
(similar) CEGL000487
(similar) Thuja plicata / Vaccinium membranaceum Forest
(similar) Thuja plicata / Vaccinium membranaceum Forest