Name:
Tsuga heterophylla - Thuja plicata - (Abies amabilis) / Cornus canadensis Forest
Reference:
NatureServe Biotics 2019
Description:
This coniferous forest community is found in the climatically transitional middle to leeward eastern valley systems of the Coast Mountains from approximately 75 km north of Bella Coola to near Chilliwack in the Fraser Valley. The slope positions are variable, from upper slope to toeslope and level, with mainly moderate slope gradients. Rapidly to moderately well-drained, slightly dry to fresh and nutrient-rich soils are normal for these sites. In the mature to old-forest stage, <i>Tsuga heterophylla</i> often has leading coverage in the canopy, followed by <i>Thuja plicata, Pseudotsuga menziesii</i>, and <i>Abies amabilis</i>. Among other species, the diverse shrub layer features <i>Tsuga heterophylla, Vaccinium parvifolium, Vaccinium alaskaense, Menziesia ferruginea, Thuja plicata, Abies amabilis, Oplopanax horridus</i>, and <i>Paxistima myrsinites</i>. Common herb-layer species which help identify this as richer sites include <i>Tiarella trifoliata, Gymnocarpium dryopteris, Streptopus lanceolatus, Polystichum munitum, Athyrium filix-femina, Maianthemum racemosum</i>, and <i>Maianthemum stellatum</i>. <i>Rhytidiadelphus loreus, Hylocomium splendens, Eurhynchium oreganum, Rhytidiopsis robusta</i>, and <i>Plagiomnium insigne</i> are the main moss-layer species. When found growing together widely throughout a mature to old-forest successional stage, the following species are helpful indicators for this association: <i>Chimaphila menziesii, Tiarella trifoliata, Gymnocarpium dryopteris, Streptopus lanceolatus, Polystichum munitum, Athyrium filix-femina, Maianthemum racemosum</i>, and <i>Maianthemum stellatum</i>. Unless associated with seepage or other wet microsites, there should be an absence or only very low coverage of <i>Rubus spectabilis</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:31739-{9E535301-35D2-4B88-ACCA-C913A242F485}
Plot-observations of this Community Concept:
0
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