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Abies grandis / Asarum caudatum Forest | Western Ecology Working Group of...
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Name: Abies grandis / Asarum caudatum Forest Reference: Western Ecology Working Group of... Description: This evergreen forest association is found on all terrain, usually on protected exposures or cove-like situations, on the drainages of the Clearwater River in northern Idaho between 671 and 1814 m (2200-5950 feet) elevation. Parent materials vary, but granitics and metasediments are the most common. Volcanic ash influences the upper horizons of most of the profiles. Soil textures are primarily silt loams and silty clay loams with only traces of exposed soil or rock. Gravel content is usually less than 30%. The effective rooting depth averages 50 cm with an average pH of 6.3. <i>Abies grandis</i> is the indicated climax tree species. <i>Pseudotsuga menziesii</i> along with <i>Picea engelmannii</i> (at the higher elevations) are the major seral tree species. Following disturbance, sites are frequently recolonized by <i>Abies grandis</i>, leading to even-aged stands dominated by a climax species. Occasional species are <i>Pinus monticola, Pinus ponderosa</i>, and <i>Larix occidentalis</i>. The shrub-layer species typically demonstrate low cover values. Species with high constancy are <i>Acer glabrum, Rosa gymnocarpa</i>, and <i>Symphoricarpos albus</i>. Their coverage declines with increasing stand age and canopy cover. There is high species richness and undergrowth coverage in the forb layer due to the moderate environment of this type. <i>Asarum caudatum</i> is diagnostic for this type. <i>Clintonia uniflora, Tiarella trifoliata</i>, and <i>Maianthemum stellatum (= Smilacina stellata)</i> are characteristically present. Other forbs, such as <i>Coptis occidentalis, Prosartes hookeri (= Disporum hookeri), Polystichum munitum</i>, or <i>Synthyris platycarpa</i>, may occasionally dominate this layer.  Accession Code: VB.CC.34710.CEGL000269 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.2.687552 NatureServe Explorer   Translated: Grand Fir / British Columbia Wild Ginger Forest   Scientific: Abies grandis / Asarum caudatum Forest   Code: CEGL000269