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Pseudotsuga menziesii - Tsuga heterophylla / Gaultheria shallon - Mahonia nervosa Forest | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii - Tsuga heterophylla / Gaultheria shallon - Mahonia nervosa Forest Reference: NatureServe Biotics 2019 Description: This Douglas-fir - western hemlock forest of British Columbia, Washington and Oregon has a canopy dominated by <i>Pseudotsuga menziesii</i> or a mixture of that species and <i>Tsuga heterophylla</i>. <i>Thuja plicata</i> is often present and sometimes prominent to codominant. <i>Tsuga heterophylla</i> typically dominates tree regeneration and always occupies over 10% total cover. The moderate to dense shrub layer is dominated by <i>Gaultheria shallon</i> or codominated by that species and <i>Mahonia nervosa</i>. <i>Mahonia nervosa</i> always has over 5% cover. <i>Acer circinatum</i> is sometimes present to codominant. <i>Vaccinium parvifolium</i> is almost always present and often prominent. The herb layer is absent to moderate. <i>Polystichum munitum</i> is frequently present in small amounts (under 3% cover), and <i>Linnaea borealis</i> is usually present to sometimes dominant. This association occurs on the western slopes of the Cascades and on the eastern Olympic Peninsula. It is absent from the outer coastal strip and infrequent to rare on the western side of the Olympic Mountains. It occurs on low to middle elevations on well-drained soils.  Accession Code: urn:lsid:vegbank.org:commConcept:34297-{CBFE07C2-908D-46B3-9902-900AA4F20D6D} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 10-May-2016 to: ongoing
	status: accepted Community's Parent: Tsuga heterophylla - Pseudotsuga menziesii / Cornus unalaschkensis Mesic Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.942450 NatureServe Explorer   Code: CEGL005538   Translated: Douglas-fir - Western Hemlock / Salal - Cascade Barberry Forest   Scientific: Pseudotsuga menziesii - Tsuga heterophylla / Gaultheria shallon - Mahonia nervosa Forest