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Thuja plicata / Gaultheria shallon Forest | NatureServe Biotics 2019
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Name: Thuja plicata / Gaultheria shallon Forest
Reference: NatureServe Biotics 2019
Description: This association occurs primarily on north-facing slopes of the San Juan Islands, and on easterly slopes of the Olympics. Elevations are less than 215 m. In these sheltered sites, winds are slight, temperatures are cooler, and summer soil moisture is higher. This is an evergreen needle-leaved tall forest dominated by <i>Thuja plicata, Abies grandis</i>, and/or <i>Pseudotsuga menziesii</i>. <i>Abies grandis</i> is present in 83% of stands, and <i>Thuja plicata</i> in 61% of stands. When <i>Tsuga heterophylla</i> is present, it has less than 5% cover. The broad-leaved deciduous tree <i>Salix scouleriana</i> is often present in the lower canopy with low cover, along with the needle-leaved evergreen <i>Taxus brevifolia</i>. Tree regeneration is dominated by <i>Thuja plicata</i> or <i>Abies grandis</i>. The dense shade of the canopy results in a patchy and sometimes open understory typically lacking an herbaceous layer. The low broad-leaved evergreen shrub <i>Gaultheria shallon</i> dominates the understory, and the taller <i>Holodiscus discolor</i> may be codominant in some stands. Other shrubs may be present, such as the low evergreen <i>Mahonia nervosa</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:29384-{C471A5B1-BB58-4E1A-8F1A-C58D07913B0C}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 09-Jun-1993 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687058 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000475
  Translated: Western Red-cedar / Salal Forest
  Scientific: Thuja plicata / Gaultheria shallon Forest
(convergence) and Synonyms:
(similar) CEGL000475
(similar) Thuja plicata / Gaultheria shallon Forest
(similar) Thuja plicata / Gaultheria shallon Forest