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Abies grandis / Chrysolepis chrysophylla Forest | Western Ecology Working Group of...
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Name: Abies grandis / Chrysolepis chrysophylla Forest Reference: Western Ecology Working Group of... Description: This mixed conifer association occurs on the eastern slope of the Oregon Cascades and is most often found on north-facing slopes between 1025-1350 m elevation. The moderate elevation make sites warmer and drier than most other Abies grandis associations. Soils are derived from volcanic ash and basalt parent materials and the surface layers are especially deep fine, sandy loams. The tree canopy is codominated by Pseudotsuga menziesii and Abies grandis, each of which attain about 22% cover. Abies grandis trees have grown in older stands following the advent of fire suppression earlier this century. Pinus ponderosa is also common but averages only 15% cover. Pinus contorta is abundant in fire initiated stands less than 100 years of age. The north-facing aspects moderate the moisture and temperature enough to allow occasional individuals of Larix occidentalis an Pinus monticola to grow despite being near the limits of their physiological tolerance. The dominant shrubs are Chrysolepis chrysophylla (= Castanopsis chrysophylla) and Symphoricarpos mollis (or Symphoricarpos albus), each averaging about 5% cover. Rosa gymnocarpa and Chimaphila umbellata are also common. Acer circinatum is infrequent but may occur in large patches. Linnaea borealis is common in the herbaceous layer and may be extensive; it is often accompanied by Achlys triphylla and other herbs. Known stands are located in areas where heavy grazing by sheep occurred in the early 1900s. The floristics of this association may still be influenced by the selective overgrazing and soil compaction that occurred at that time. This association has more shrub cover, especially by Chrysolepis chrysophylla, than either Abies grandis / Linnaea borealis Forest (CEGL000275) or Abies grandis - Pseudotsuga menziesii / Trientalis borealis ssp. latifolia Forest (CEGL000040).  Accession Code: VB.CC.19072.ABIESGRANDISCHR Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Abies grandis Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Grand Fir / Golden Chinkapin Forest   UID: ELEMENT_GLOBAL.2.683744 NatureServe Explorer   Code: CEGL000038   Scientific: Abies grandis / Chrysolepis chrysophylla Forest   Common: Grand Fir / Chinkapin (convergence) and Synonyms: (undetermined) Abies grandis / Chrysolepis chrysophylla Forest