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Abies grandis / Asarum caudatum Forest | NatureServe Biotics 2019
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Name: Abies grandis / Asarum caudatum Forest
Reference: NatureServe Biotics 2019
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</i> are characteristically present. Other forbs, such as <i>Coptis occidentalis, Prosartes hookeri, Polystichum munitum</i>, or <i>Synthyris platycarpa</i>, may occasionally dominate this layer. 
Accession Code: urn:lsid:vegbank.org:commConcept:29178-{C4EE904D-C88F-42A4-B09A-68B06EA16886}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 27-Feb-1991 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687552 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000269
  Translated: Grand Fir / British Columbia Wild Ginger Forest
  Scientific: Abies grandis / Asarum caudatum Forest
(convergence) and Synonyms:
(similar) Abies grandis / Asarum caudatum Forest
(similar) CEGL000269
(similar) Abies grandis / Asarum caudatum Forest