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Picea (engelmannii X glauca, engelmannii) / Carex disperma Forest | Western Ecology Working Group of...
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Name: Picea (engelmannii X glauca, engelmannii) / Carex disperma Forest Reference: Western Ecology Working Group of... Description: This association is most prevalent in the Challis Volcanics and Beaverhead Mountains Sections of east-central Idaho, occurring as stream terrace stringers from 6200-7800 feet. Within Montana, it is known from the Beaverhead Mountains Section from the Centennial, East Pioneer and Ruby ranges. It extends northward as far as the Rocky Mountain Front Range (below 5000 feet elevation). Montana occurrences are associated with both stream terraces and side-hill seeps. It extends eastward to Province M331 as sporadic scattered occurrences in the Beartooth, Absaroka, and Wind River ranges, where it occupies stream terraces at the lower fringe of the Abies lasiocarpa series, between 7200 and 7900 feet. A perennially high water table and consequent deep organic layer (to 18 in.) characterize these sites. These sites often have a single-age structure with Picea (including Picea engelmannii and Picea engelmannii X glauca hybrids) dominant, though Pinus contorta and Abies lasiocarpa may be present as seral seedlings/saplings. Numerous wet- to mesic-site shrubs, graminoids and forbs may be present but the general aspect of high quality stands is that of a Carex disperma sward and a pronounced layer of characteristic bryophytes (Aulacomnium palustre, Amblystegium serpens var. juratzkanum (= Amblystegium juratzkanum), and Tetraphis pellucida). This association may experience long fire-free intervals, but is only dependent upon such intervals in the case of providing adequate time for succession to result in Picea dominance when stands have been initiated with Pinus contorta. This association is similar to both Picea engelmannii / Equisetum arvense Forest (CEGL000363) and Picea engelmannii / Galium triflorum Forest (CEGL000365), but may be more continuously saturated and have deeper accumulations of organic matter.  Accession Code: VB.CC.18990.PICEAENGELMANNI 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: Picea engelmannii Seasonally Flooded Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: (Engelmann X White Spruce Hybrid, Engelmann Spruce) / Softleaf Sedge Forest   UID: ELEMENT_GLOBAL.2.684015 NatureServe Explorer   Code: CEGL000405   Scientific: Picea (engelmannii X glauca, engelmannii) / Carex disperma Forest (convergence) and Synonyms: (undetermined) Picea (engelmannii x glauca, engelmannii) / Carex disperma Forest