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Tsuga heterophylla - Abies amabilis / Tiarella trifoliata var. unifoliata - Achlys triphylla - Rubus pedatus Forest | NatureServe Biotics 2019
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Name: Tsuga heterophylla - Abies amabilis / Tiarella trifoliata var. unifoliata - Achlys triphylla - Rubus pedatus Forest
Reference: NatureServe Biotics 2019
Description: This moist maritime coniferous community is found along the leeward Vancouver Island Ranges from approximately 400 to 1050 m above sea level, on the Straight of Georgia side. The slope positions are variable from upper to lower, with gradients that are normally not steep. Well-drained, slightly dry and comparatively rich loamy soils are characteristic. <i>Tsuga heterophylla</i> and <i>Abies amabilis</i> normally dominate the main canopy. There is a potential presence of large old <i>Pseudotsuga menziesii</i> in the uppermost canopy. <i>Thuja plicata</i> also forms a minor component in the canopy. The moderately developed shrub layer is largely occupied by <i>Abies amabilis, Tsuga heterophylla, Vaccinium</i> spp., and <i>Mahonia nervosa</i>. Although the herb layer does not have heavy coverage, it can have good species diversity. A number of richer site indicators, including <i>Achlys triphylla, Tiarella trifoliata, Polystichum munitum</i>, and <i>Trillium ovatum</i>, are frequently present. <i>Rhytidiopsis robusta, Hylocomium splendens</i>, and <i>Rhytidiadelphus loreus</i> are the main species in the moss layer. This association is distinguished by its non-steep terrain on upper to lower slope positions, and its slightly dry, moderately rich soils. When found growing together in a mature to old-forest successional stage, useful indicator species include <i>Chimaphila menziesii</i> or <i>Chimaphila umbellata</i> with <i>Achlys triphylla, Tiarella trifoliata, Polystichum munitum</i>, and <i>Trillium ovatum</i>. Ferns such as <i>Gymnocarpium dryopteris</i> and <i>Athyrium filix-femina</i>, which indicate fresh to very moist and rich soil conditions, should be absent or found only on incidental microsites. 
Accession Code: urn:lsid:vegbank.org:commConcept:31733-{79D31312-7A67-4A14-9DA3-7D87FBD00E4F}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 13-Sep-2005 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.787594 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL002831
  Translated: Western Hemlock - Pacific Silver Fir / Oneleaf Foamflower - Sweet After Death - Strawberry-leaf Raspberry Forest
  Scientific: Tsuga heterophylla - Abies amabilis / Tiarella trifoliata var. unifoliata - Achlys triphylla - Rubus pedatus Forest
(convergence) and Synonyms:
(similar) Tsuga heterophylla - Abies amabilis / Tiarella trifoliata var. unifoliata - Achlys triphylla - Rubus pedatus Forest