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Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Swamp Forest | NatureServe Biotics 2019
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Name: Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Swamp Forest Reference: NatureServe Biotics 2019 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, Orthilia secunda, Thalictrum occidentale</i>, and <i>Xerophyllum tenax</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:29206-{13453ADA-E5E2-48A7-94FC-8DC18C87757D} Plot-observations of this Community Concept: 1
	Party Perspective according to: NatureServe (organization) Perspective from: 11-Mar-2004 to: ongoing
	status: accepted Community's Parent: Abies lasiocarpa - Picea engelmannii Swamp Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.683500 NatureServe Explorer   Code: CEGL000297   Translated: Subalpine Fir - Engelmann Spruce / Sitka Alder Swamp Forest   Scientific: Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Swamp Forest (convergence) and Synonyms: (similar) CEGL000297 (similar) Abies lasiocarpa - Picea engelmannii / Alnus viridis ssp. sinuata Forest (similar) Abies lasiocarpa / Alnus viridis ssp. sinuata Forest