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Tsuga mertensiana - Abies amabilis - (Callitropsis nootkatensis) / Elliottia pyroliflora - Vaccinium membranaceum Woodland | NatureServe Biotics 2019
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Name: Tsuga mertensiana - Abies amabilis - (Callitropsis nootkatensis) / Elliottia pyroliflora - Vaccinium membranaceum Woodland
Reference: NatureServe Biotics 2019
Description: This association occurs in very wet climatic areas of the northwestern Cascade Range of Washington and the Coastal Mountains of British Columbia. In Washington, it occurs at elevations of 900-1400 m, primarily on north-facing slopes, shallow soils, and mid to upper slopes, where the snowpack is very deep. This is a needle-leaved evergreen conifer woodland, usually with relatively short trees (mean height of 17 m after 100 years). <i>Tsuga mertensiana</i> is the most abundant tree, averaging about 40% cover; <i>Abies amabilis</i> is always present in smaller amounts, and <i>Callitropsis nootkatensis</i> is usually prominent also. Understory vegetation is dominated by a relatively dense layer of shrubs 0.8-2 m tall, mostly deciduous broad-leaved <i>Vaccinium ovalifolium</i> and evergreen broad-leaved <i>Elliottia pyroliflora</i>, and to a lesser degree <i>Vaccinium membranaceum</i> and <i>Menziesia ferruginea</i>. The dwarf-shrubs <i>Phyllodoce empetriformis</i> and <i>Vaccinium deliciosum</i> are sometimes present and occasionally prominent, mostly at the upper elevational limits of the type. The herbaceous layer is dominated by <i>Rubus pedatus</i> and the fern <i>Blechnum spicant</i>, each averaging about 10% in cover. This association is distinguished from similar associations by an abundance of <i>Elliottia pyroliflora</i> and a lack of wet-site indicators such as <i>Caltha leptosepala, Oplopanax horridus</i>, or <i>Nephrophyllidium crista-galli</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:29412-{620380CA-84A0-4A52-8EDF-FCAAB46EC55D}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.688751 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000503
  Translated: Mountain Hemlock - Pacific Silver Fir - (Alaska-cedar) / Copperbush - Thinleaf Huckleberry Woodland
  Scientific: Tsuga mertensiana - Abies amabilis - (Callitropsis nootkatensis) / Elliottia pyroliflora - Vaccinium membranaceum Woodland
(convergence) and Synonyms:
(similar) CEGL000503
(similar) Tsuga mertensiana - Abies amabilis / Elliottia pyroliflorus Woodland
(similar) Tsuga mertensiana - Abies amabilis / Elliottia pyroliflorus Woodland