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Picea engelmannii / Vaccinium uliginosum Swamp Woodland | NatureServe Biotics 2019
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Name: Picea engelmannii / Vaccinium uliginosum Swamp Woodland Reference: NatureServe Biotics 2019 Description: This association is located in the Elkhorn Mountains of the Blue Mountains ecoregion and in the East Cascades ecoregion of Oregon. Sites are in wet basins at moderately high to high elevations. Geomorphic surfaces are hummocky with approximately 30-60 cm height between the top of the hummocks (where the conifers and <i>Vaccinium uliginosum</i> occur) and the bottom of the swales (where the <i>Carex scopulorum</i> occurs). Valleys are north- to east-facing with low to moderate gradient. Soils are histosols that remain wet to saturated throughout the growing season. Trees (<i>Abies lasiocarpa, Picea engelmannii</i>, and <i>Pinus contorta</i>) are generally dwarfed and confined to hummocks. The open nature of the tree canopy will promote codominance of these overstory members. Much of the cover consists of stunted, older trees that would be taller on more favorable sites. This type is unique among forested types in that the trees do not form a continuous canopy and do not account for a great amount of total canopy cover. It is very distinctive in physiognomy and structure on the landscape, however, and is easily recognizable as an association. <i>Vaccinium uliginosum</i> dominates the shrub layer; <i>Kalmia microphylla, Vaccinium scoparium</i>, and <i>Phyllodoce empetriformis</i> are associated shrubs. <i>Carex scopulorum</i> creates a dense sward in the microswales on the site with mean coverage of 65%. Height of the shrub layer averages 30 cm. Height of the herbaceous layer averages 33 cm. Herbaceous biomass averages 567 lbs/acre, ranging from 200-933 lbs/acre. These sites are generally stable. With severe fire that kills the conifers, shrubs will increase in cover and this may result in long-term dominance of the site by a <i>Vaccinium uliginosum - Vaccinium scoparium</i>-dominated association.  Accession Code: urn:lsid:vegbank.org:commConcept:29289-{9309AD01-1FEF-4D7A-8F68-29DA3A9B541F} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 05-Jul-2018 to: ongoing
	status: accepted Community's Parent: Picea engelmannii Cascadian Swamp Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685941 NatureServe Explorer   Code: CEGL000380   Translated: Engelmann Spruce / Bog Blueberry Swamp Woodland   Scientific: Picea engelmannii / Vaccinium uliginosum Swamp Woodland (convergence) and Synonyms: (similar) Picea engelmannii / Vaccinium uliginosum Woodland (similar) CEGL000380 (similar) Picea engelmannii / Vaccinium uliginosum Woodland