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Tsuga mertensiana - Abies amabilis Forest & Woodland Alliance | NatureServe Biotics 2019
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Name: Tsuga mertensiana - Abies amabilis Forest & Woodland Alliance
Reference: NatureServe Biotics 2019
Description: These forests have a closed tree canopy that is dominated by <i>Tsuga mertensiana</i> and <i>Abies amabilis</i>. Other common trees include <i>Tsuga heterophylla, Callitropsis nootkatensis</i>, and <i>Pseudotsuga menziesii</i>. The undergrowth is often somewhat depauperate because of poor light penetration at the forest floor, but may include a moderately sparse shrub layer composed of <i>Rubus</i> spp., <i>Elliottia pyroliflora, Rhododendron albiflorum, Menziesia ferruginea, Vaccinium membranaceum</i>, and <i>Vaccinium ovalifolium</i>. Shade-tolerant forbs and ferns may also be present. Stands occur between 1000-1500 m (possibly up to 2000 m). Sites are found on mid to lower slopes, benches and bottoms with typically western and northern aspects. Soils are acidic, coarse-textured and often subirrigated. Stands occur primarily west of the Cascade Crest where maritime influence and deep winter snowpacks are typical. This alliance occurs in southern British Columbia to central Oregon. 
Accession Code: urn:lsid:vegbank.org:commConcept:38937-{492EE888-6372-4A17-8A42-3589D4BA8734}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 18-Dec-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899775 NatureServe ExplorerNatureServe Explorer logo
  Code: A3723
  Translated: Mountain Hemlock - Pacific Silver Fir Forest & Woodland Alliance
  Common: Mountain Hemlock - Pacific Silver Fir Forest & Woodland
  Scientific: Tsuga mertensiana - Abies amabilis Forest & Woodland Alliance