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Picea mariana Saturated Woodland Alliance | Eastern Ecology Working Group of...
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Name: Picea mariana Saturated Woodland Alliance Reference: Eastern Ecology Working Group of... Description: This alliance is found in the Great Lakes and northeastern parts of the United States and throughout the boreal region in Canada. Tree canopy cover is variable but generally exceeds 25%. Stunted Picea mariana trees (<10 m tall) dominate the canopy, which may also include scattered Larix laricina. The dwarf-shrub layer is dominated by ericaceous species, such as Ledum groenlandicum, Chamaedaphne calyculata, Andromeda polifolia var. glaucophylla (= Andromeda glaucophylla), and Kalmia polifolia. Herbaceous species include Carex trisperma and Eriophorum vaginatum. Sphagnum mosses (usually Sphagnum fuscum, Sphagnum angustifolium, and Sphagnum magellanicum) cover the ground layer, with scattered feathermosses Pleurozium schreberi, Dicranum undulatum, and Polytrichum strictum. Species considered diagnostic for this alliance in northern Minnesota and Ontario, when compared to the Chamaedaphne calyculata Saturated Dwarf-shrubland Alliance (A.1092), include Vaccinium vitis-idaea, Gaultheria hispidula, Maianthemum trifolium, and Carex trisperma, but this needs rangewide review. This alliance is best developed on the crests and upper slopes of raised bogs within bog complexes, but is also found in basin bogs and occasionally on shores (but isolated from groundwater contact). Here, sphagnum mosses can prevent most tree reproduction except that of Picea mariana and Larix laricina, which can reproduce by layering. The substrate consists of deep, fibric peat.  Accession Code: VB.CC.24897.PICEAMARIANASAT Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Translated: Black Spruce Saturated Woodland Alliance   Scientific: Picea mariana Saturated Woodland Alliance   UID: HIGHER_CLASS_UNIT.2.126499 NatureServe Explorer   Code: A.585