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Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Forest | Western Ecology Working Group of...
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Name: Abies lasiocarpa - Picea engelmannii / 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 <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> with tall shrub <i>Alnus viridis ssp. sinuata</i> dominating the understory. The evergreen needle-leaved tree canopy is moderately dense (60-90% cover) and is typically codominated by <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> with lesser amounts of <i>Pinus contorta, Pseudotsuga menziesii, Pinus albicaulis</i>, and <i>Larix occidentalis</i> (west of the Continental Divide). The tall-shrub layer is composed of dense patches and is dominated by <i>Alnus viridis ssp. sinuata</i> with scattered <i>Ribes lacustre</i>. <i>Vaccinium membranaceum, Vaccinium myrtillus</i>, and/or <i>Vaccinium scoparium</i> often form a dwarf-shrub layer. The herbaceous layer is typically sparse and composed of diverse forbs such as <i>Arnica cordifolia, Arnica latifolia, Osmorhiza berteroi (= Osmorhiza chilensis), Orthilia secunda (= Pyrola secunda), Thalictrum occidentale</i>, and <i>Xerophyllum tenax</i>.  Accession Code: VB.CC.32214.CEGL000297 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.2.683500 NatureServe Explorer   Translated: Subalpine Fir - Engelmann Spruce / Sitka Alder Forest   Scientific: Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Forest   Code: CEGL000297