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Abies amabilis - Tsuga heterophylla Rainforest Group | NatureServe Biotics 2019
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Name: Abies amabilis - Tsuga heterophylla Rainforest Group Reference: NatureServe Biotics 2019 Description: This forested group occurs in the Pacific Northwest mountains primarily west of the Cascade Crest. <i>Tsuga heterophylla</i> and/or <i>Abies amabilis</i> dominate the canopy of late-seral stands, and <i>Callitropsis nootkatensis</i> can be codominant, especially at higher elevations or moister sites. <i>Thuja plicata</i> is also common and sometimes codominates in British Columbia. Major dominant understory species are <i>Vaccinium alaskaense, Blechnum spicant</i>, and/or <i>Rubus pedatus</i>. In drier settings, <i>Pseudotsuga menziesii</i> is usually also common. <i>Abies procera</i> forests (usually mixed with silver fir) are included in this group, as well as stands where <i>Abies lasiocarpa</i> can occur as a codominant on the east side of the Cascades. Dry-setting understory species may include <i>Achlys triphylla, Mahonia nervosa, Xerophyllum tenax, Vaccinium membranaceum</i>, and/or <i>Rhododendron macrophyllum</i>. This group occurs at mid-montane elevations in dry to moist maritime, some hypermaritime and some submaritime climatic zones from northwestern Oregon, coastal British Columbia to extreme southeastern Alaska. It generally occurs in an elevational band above <i>Pseudotsuga menziesii - Tsuga heterophylla</i> and hypermaritime zone forests and below <i>Tsuga mertensiana</i> forests. It is known to occur on windward and leeward sides of Vancouver Island and on the Olympic Peninsula. In the Cascade Range of northern Washington (north of Snoqualmie River) and in the Coast Mountains of mainland British Columbia, it occurs in the wettest portions, including inland to the mountain crest. A somewhat variable winter snowpack that typically lasts for 2-4 months is characteristic. The climatic zone within which it occurs is sometimes referred to as the "rain-on-snow" zone because of the common occurrence of major winter rainfall on an established snowpack.  Accession Code: urn:lsid:vegbank.org:commConcept:40027-{81C652A3-3D7E-42C8-A040-BC0B177C7CC9} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 09-Nov-2015 to: ongoing
	status: accepted Community's Parent: Tsuga heterophylla - Picea sitchensis - Sequoia sempervirens Rainforest Macrogroup This Community's Level: Group This Community's Children: Show/Hide   Abies amabilis - Tsuga heterophylla / Achlys triphylla Forest Alliance   Abies amabilis - Tsuga heterophylla / Vaccinium membranaceum Cold Forest Alliance		Names:   UID: ELEMENT_GLOBAL.2.833262 NatureServe Explorer   Code: G241   Scientific: Abies amabilis - Tsuga heterophylla Rainforest Group