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Thuja plicata / Clintonia uniflora Forest | Western Ecology Working Group of...
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Name: Thuja plicata / Clintonia uniflora Forest Reference: Western Ecology Working Group of... Description: This association represents the warmest and driest <i>Thuja plicata</i>-dominated forests. Elevation range is 670 to 1530 m (2200-5000 feet). Stands occur on bottomlands, benches, and lower slopes with gentle to steep gradients, most often on gentle slopes. All aspects are represented. Soils are volcanic ash over glacial till or outwash with variable parent material. Soil textures are silt loams to mostly sandy loams, with high coarse fragments (16-63%). All soils are well- to moderately well-drained. <i>Thuja plicata</i> is dominant in the overstory and in the subcanopy as a reproducing tree. Undergrowth is characterized by scattered mesophytic herbs and subshrubs of which <i>Clintonia uniflora</i> is the most diagnostic. <i>Thuja plicata</i> is dominant or codominant and the characteristic tree (average cover ranges between 35 and 60%). <i>Pseudotsuga menziesii, Larix occidentalis, Pinus contorta</i>, and <i>Abies grandis</i> are often abundant codominants (average cover ranging from 10-30%). The shrub layer is relatively sparse with 5-10% cover. Shrub species present include <i>Paxistima myrsinites, Linnaea borealis, Mahonia repens</i>, and <i>Lonicera utahensis</i>. The herbaceous layer is not abundant, with a high variance in the forb and grass species present. <i>Goodyera oblongifolia, Chimaphila umbellata, Clintonia uniflora, Tiarella trifoliata, Coptis occidentalis, Orthilia secunda</i>, and <i>Viola orbiculata</i> are the more commonly encountered species, but with very low abundance (1-3%), occasionally with as much as 5% cover. <i>Clintonia uniflora</i>, while not present in all stands, is the indicator species for this relatively depauperate type; other indicators include <i>Tiarella trifoliata, Coptis occidentalis</i>, and <i>Adenocaulon bicolor</i>.  Accession Code: VB.CC.32352.CEGL000474 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.2.685134 NatureServe Explorer   Translated: Western Red-cedar / Bride's Bonnet Forest   Scientific: Thuja plicata / Clintonia uniflora Forest   Code: CEGL000474