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Abies lasiocarpa / Oplopanax horridus Forest | Western Ecology Working Group of...
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Name: Abies lasiocarpa / Oplopanax horridus Forest Reference: Western Ecology Working Group of... Description: This minor coniferous forest association occurs in drainages and seeps at mid-elevations in mountain ranges of northwestern Montana and northern Idaho. Elevations range from 1200-1500 m. Stands tend to be small (<8 ha) and are restricted to low-lying areas with high water tables most of the year, such as along streams, springs and seeps. Sites are seasonally flooded with surface water present for extended periods during the growing season, and tree regeneration is dominated by Abies lasiocarpa. This association often forms long narrow stands within floodplains. Soils are variable, but generally acidic with a deep organic layer. Late-seral stands are characterized by a moderately dense to dense, sometimes giant (>50 m tall) tree canopy codominated by Abies lasiocarpa and Picea engelmannii or Picea glauca. Minor tree associates include Pseudotsuga menziesii, Larix occidentalis, and Pinus monticola. Oplopanax horridus and Taxus brevifolia dominate the moderately dense to dense tall-shrub layer; at least 5% cover of Oplopanax horridus is considered diagnostic for the association. Other common shrub associates include Menziesia ferruginea, Rubus parviflorus, Symphoricarpos albus, and Vaccinium spp. Linnaea borealis may also have high cover, and Abies lasiocarpa dominates the tree regeneration. The herbaceous layer is abundant, diverse, and forb-dominated, including species such as Clintonia uniflora, Maianthemum stellatum, Streptopus amplexifolius, Tiarella trifoliata, and the ferns Athyrium filix-femina and Gymnocarpium dryopteris. Diagnostic of this association is the closed coniferous tree canopy codominated by Abies lasiocarpa with an Oplopanax horridus-dominated tall-shrub layer.  Accession Code: VB.CC.22470.ABIESLASIOCARPA 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 lasiocarpa Seasonally Flooded Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Code: CEGL000322   Translated: Subalpine Fir - Engelmann Spruce / Devil's-club Forest   UID: ELEMENT_GLOBAL.2.687106 NatureServe Explorer   Scientific: Abies lasiocarpa - Picea engelmannii / Oplopanax horridus Forest (convergence) and Synonyms: (undetermined) Abies lasiocarpa - Picea engelmannii / Oplopanax horridus Forest