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Northern Ontario Plant DatabaseNorthern Ontario Vegetation Type (V-type)Summary: A mixedwood stand dominated by trembling aspen, white birch, jack pine, and black spruce. Other species in the canopy and subcanopy include white spruce, white pine, and balsam fir. Regeneration is dominated by balsam fir, white birch, red maple, black spruce, and trembling aspen. Low shrubs are more commonly represented than tall shrubs, with bush honeysuckle, lowbush and velvetleaf blueberry occurring more frequently than beaked hazel and mountain maple. The herb layer is dominated by the characteristic boreal forest species, plus wild sarsaparilla, bracken fern, largeleaf aster, goldthread, and ground pine. The moss layer is dominated by Schreber's feathermoss and wavyleaf moss. This vegetation type is similar to C-V25, however, C-V24 is characterized by the more common occurrence of black spruce, velvetleaf blueberry, and Schreber's feathermoss, but lacks significant quantities of white pine, red pine, and Canada fly honeysuckle. Soil & Ecosite Types: The Trembling Aspen-White Birch-Jack Pine-Black Spruce-Bush Honeysuckle-Blueberry-Feathermoss Vegetation Type (C-V24) occurs most commonly on dry to moderately fresh, fine sandy soils (S2) or dry to moderately fresh, coarse loamy to silty soils (S3), but may occasionally be found on slightly moister soils. This vegetation type was described from the northeastern portions of Site Regions 4E and 5E, mainly from Site Districts 4E-4 (northern North Bay region), and 4E-3 (northern Sudbury region). C-V24 can be found on a variety of ecosite types, including types C-ES 17.1 (Poplar-White Birch, dry to moderately fresh), C-ES 17.2 (Poplar-White Birch, fresh to moist), C-ES 18.2 (Poplar-White Birch-White Spruce-Balsam Fir, fresh to moist), C-ES 19.1 (Poplar-Jack Pine-White Spruce-Black Spruce, dry to moderately fresh), C-ES 19.2 (Poplar-Jack Pine-White Spruce-Black Spruce, fresh to moist), C-ES 20.1 (White Pine-Red Pine-White Spruce-White Birch-Trembling Aspen, dry to moderately fresh), and C-ES 21.1 (White Cedar-White Pine-White Birch-White Spruce, dry to moderately fresh), and less frequently on ecosite types C-ES 18.1 (Poplar-White Birch-White Spruce-Balsam Fir, dry to moderately fresh) and C-ES 21.2 (White Cedar-White Pine-White Birch-White Spruce, fresh to moist). Note: In sample plots, species listed below occurred with 50% frequency or more, except for those in square brackets, which occurred with 30-49% frequency. Trees: overstoreyShrubs:trembling aspen (Populus tremuloides)subcanopy tall shrubsDwarf Shrubs and Herbs:beaked hazel (Corylus cornuta)low shrubs dwarf shrubsFerns and Fern Allies:twinflower (Linnaea borealis)forbswild lily-of-the-valley (Maianthemum canadense) fernsBryophytes:bracken fern (Pteridium aquilinum)clubmosses Lichens:Schreber's feathermoss (Pleurozium schreberi) [common powderhorn (Cladonia coniocraea)] |