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Picea mariana - Abies balsamea / Sibbaldiopsis tridentata Shrubland | Eastern Ecology Working Group of...
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Name: Picea mariana - Abies balsamea / Sibbaldiopsis tridentata Shrubland Reference: Eastern Ecology Working Group of... Description: This shrubby alpine krummholz occurs at high elevations in the Northern Appalachians of the northeastern United States and adjacent Canada. The setting is high, wind-exposed alpine peaks and exposed high-elevation summits, usually from 3500-4900 feet elevation. Soils are thin organic Histosols or peat. The stunted trees form matted, wind-pruned alpine conifer thickets, usually of 60-100% cover. Dwarf-shrubs and herbs are occasional in openings among the shrubby trees. Bryoids, also in the openings, are sparse; decomposing organic litter makes up the remainder of the ground cover. The krummholz is dominated by a variable mixture of Picea mariana, Abies balsamea, and Betula papyrifera var. cordifolia. Dwarf-shrubs and herbs include Ledum groenlandicum, Vaccinium uliginosum, Empetrum nigrum, Vaccinium vitis-idaea, Clintonia borealis, Cornus canadensis, Sibbaldiopsis tridentata, Trientalis borealis, Gaultheria hispidula, and Solidago macrophylla. This association shares many species with subalpine spruce-fir forests (e.g., Abies balsamea - (Betula papyrifera var. cordifolia) Forest (CEGL006112)), but the low stature and matted form of the trees is distinctive.  Accession Code: VB.CC.24356.PICEAMARIANAABI 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 mariana - Abies balsamea Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Black Spruce - Balsam Fir / Mountain-cinquefoil Shrubland   UID: ELEMENT_GLOBAL.2.687709 NatureServe Explorer   Code: CEGL006038   Scientific: Picea mariana - Abies balsamea / Sibbaldiopsis tridentata Shrubland   Common: Black Spruce Krummholz (convergence) and Synonyms: (undetermined) Picea mariana - Abies balsamea / Sibbaldiopsis tridentata Shrubland