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Tsuga mertensiana - Abies amabilis / Elliottia pyroliflorus Woodland | Western Ecology Working Group of...
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Name: Tsuga mertensiana - Abies amabilis / Elliottia pyroliflorus Woodland Reference: Western Ecology Working Group of... 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>Chamaecyparis nootkatensis</i> is usually prominent also. Understory vegetation is dominated by a relatively dense layer of deciduous broad-leaved shrubs 0.8-2 m tall, mostly <i>Vaccinium ovalifolium</i> and <i>Elliottia pyroliflorus</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 pyroliflorus</i> and a lack of wet site indicators such as <i>Caltha leptosepala, Oplopanax horridus</i>, or <i>Nephrophyllidium crista-galli (= Fauria crista-galli)</i>.  Accession Code: VB.CC.32486.CEGL000503 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.2.688751 NatureServe Explorer   Translated: Mountain Hemlock - Pacific Silver Fir / Copperbush Woodland   Scientific: Tsuga mertensiana - Abies amabilis / Elliottia pyroliflorus Woodland   Code: CEGL000503