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Abies concolor - Picea breweriana / Chimaphila umbellata Forest | Western Ecology Working Group of...
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Name: Abies concolor - Picea breweriana / Chimaphila umbellata Forest Reference: Western Ecology Working Group of... Description: This highly variable coniferous forest association is found in southwestern Oregon and northwestern California between 1170-1525 m elevation. Stands grow on westerly and southwesterly aspects, on granitics, gabbro, and mixed metamorphic substrates. This association is more open than other associations in the area with large amounts (19%) of surface rock and bare ground (8%). This type is characterized by <i>Abies concolor</i> and <i>Picea breweriana</i> in the overstory with the <i>Abies concolor</i> attaining roughly 15% cover, and <i>Picea breweriana</i> about 5%. <i>Pinus lambertiana</i> and <i>Pseudotsuga menziesii</i> are both usually present in larger percentages than either of the indicator species. Total tree overstory canopy cover averages 75% cover. There seem to be two phases to this association: a warm phase and a cool phase. These phases are primarily differentiated by the tree understory species. Cooler sites contain <i>Abies concolor, Abies x shastensis (= Abies magnifica var. shastensis), Chrysolepis chrysophylla, Picea breweriana</i>, and <i>Taxus brevifolia</i>. In the warm phase <i>Abies x shastensis</i> is missing and <i>Symphoricarpos mollis</i> is found in the herbaceous layer. <i>Mahonia nervosa (= var. nervosa)</i> and <i>Chimaphila umbellata</i> are the common shrub species. Fire is not common in this association, and fires that do occur tend to be low intensity. <i>Pinus lambertiana</i> can be very susceptible to blister rust. This type is the only <i>Abies concolor</i> association with <i>Chimaphila umbellata</i> in the understory without <i>Gaultheria ovatifolia</i>.  Accession Code: VB.CC.34341.CEGL000050 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.2.686148 NatureServe Explorer   Translated: White Fir - Brewer Spruce / Pipsissewa Forest   Scientific: Abies concolor - Picea breweriana / Chimaphila umbellata Forest   Code: CEGL000050