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Abies lasiocarpa / Alnus viridis ssp. sinuata Forest | Western Ecology Working Group of...
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Name: Abies lasiocarpa / Alnus viridis ssp. sinuata Forest Reference: Western Ecology Working Group of... Description: This minor forest association occurs in scattered locations in the lower subalpine zone of the northern Rocky Mountains. Stands are typically found on steep mountain slopes on northern aspects, at elevations ranging from 1525-2290 m (5000-7500 feet). Sites are cool and moist. Substrates are typically loams or less commonly silt loams or silts. Litter dominates ground cover often 6 cm deep with low cover of rock and bare ground. The vegetation is characterized by a tree canopy codominated by Abies lasiocarpa and Picea engelmannii with tall shrub Alnus viridis ssp. sinuata dominating the understory. The evergreen needle-leaved tree canopy is moderately dense (60-90% cover) and is typically codominated by Abies lasiocarpa and Picea engelmannii with lesser amounts of Pinus contorta, Pseudotsuga menziesii, Pinus albicaulis, and Larix occidentalis (west of the Continental Divide). The tall-shrub layer is composed of dense patches and is dominated by Alnus viridis ssp. sinuata with scattered Ribes lacustre. Vaccinium membranaceum, Vaccinium myrtillus, and/or Vaccinium scoparium often form a dwarf-shrub layer. The herbaceous layer is typically sparse and composed of diverse forbs such as Arnica cordifolia, Arnica latifolia, Osmorhiza berteroi (= Osmorhiza chilensis), Orthilia secunda (= Pyrola secunda), Thalictrum occidentale, and Xerophyllum tenax.  Accession Code: VB.CC.18232.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 Temporarily Flooded Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Subalpine Fir - Engelmann Spruce / Sitka Alder Forest   UID: ELEMENT_GLOBAL.2.683500 NatureServe Explorer   Code: CEGL000297   Scientific: Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Forest   Common: Subalpine Fir / Wavy-leaf Alder Forest (convergence) and Synonyms: (undetermined) Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Forest