Northern Ontario Plant Database
Northern Ontario Vegetation Type (V-type)
Summary: A hardwood stand type dominated by trembling aspen, providing up to 40% cover in the canopy layer and 2-5% cover in the shrub layer. White spruce, balsam fir, and white birch occur in about 40% of stands, with less than 20% cover, while black spruce occurs only occasionally. Regeneration is composed of equal amounts of trembling aspen and balsam fir (2-5% cover), with white birch providing similar cover, but in fewer than 2/3 of the sample plots.
The shrub layer contains a moderate amount of species, with mountain maple (21-40% cover) and beaked hazel (11-20% cover) occurring most frequently in the tall shrub layer; serviceberries provide only 2-5% cover. The low shrub layer contains bush honeysuckle (6-10% cover), Canada fly honeysuckle (2-5% cover), and prickly wild rose, with similar cover, but occurring is fewer than 2/3 of sample plots.
A moderate number of species also occur in the herb layer, with largeleaf aster (21-40% cover) the dominant species. Also present are sarsaparilla (6-10% cover), rose twisted-stalk, dwarf raspberry, violet species, and the characteristic boreal forest species (2-5% cover each), as well as naked mitrewort and sedges (2-5% cover in fewer than 2/3 of plots), and small numbers of fragrant bedstraw and wood anemone (1% cover).
Pteridophytes in the herb layer include ground pine, which provides only 1% cover, and occasional patches of bracken fern, providing up to 10% cover in fewer than 2/3 of sample plots. The moss layer is poor due to the heavy deciduous leaf litter, but small amounts of Schreber's feather moss, sickle moss, and Brachythecium mosses have been observed.
Soil & Ecosite Types: The Trembling Aspen-Bush Honeysuckle-Largeleaf Aster (NE-V5) vegetation type occurs most frequently on fresh fine loamy to clayey soils (S13), but may also occur on a variety of coarse to fine, acidic or calcareous soils, including dry to fresh calcareous sandy soils (S2), fresh to moist acidic coarse loamy to silty soils (S7, S9), and fresh to moist calcareous loamy to silty soils (S10, S12). The NE-V5 vegetation type occurs on ecosite types ES 7f (Trembling Aspen-White Spruce-White Birch-Fine Soil), ES 7m (trembling Aspen-White Birch-Medium Soil), ES 7c (Trembling Aspen-White Birch-Coarse Soil), ES 18 (Jack Pine-White Pine-Red Pine), and ES 19 (White Pine-Red Pine-Mixedwood).
tall shrubsDwarf Shrubs & Herbs:
dwarf shrubsFerns & Fern Allies:
Note: Species listed above are taken from the Vegetation type description and the Species Percentage Cover by Vegetation Type Tables (pg. D 34). Species are listed in order of most cover and abundance.brachythecium mosses (Brachythecium spp.)