Northern Ontario Plant Database
Northern Ontario Vegetation Type (V-type)
Summary: A mixedwood stand type dominate by trembling aspen (21-40% cover) and white spruce (11-20% cover) in the canopy, with balsam fir common in the secondary canopy and as the main understorey species, providing 11-20% cover.
The shrub layer is dominated by squashberry and bush honeysuckle, each providing 2-5% cover, but a variety of tall and other low shrub species may also be present. In 1/3 to 2/3 of sample plots, mountain maple, beaked hazel, and speckled alder provide 2-20% cover.
The herb layer is rich, with a variety of species, including largeleaf aster (11-20% cover), wild sarsaparilla (6-10% cover), dwarf raspberry, twinflower, bluebead lily, naked mitrewort, sweet coltsfoot, and violets (each 2-5% cover). The characteristic boreal species are also present.
The forest floor is covered with primarily deciduous leaf litter, but patches of several feathermosses and other mosses occur, including Schreber's feathermoss and shaggy moss (2-5% cover). Occurs mainly on fresh to moist soils of various textures.
Soil and Ecosite Types: The Trembling Aspen-White Spruce-Squashberry Vegetation Type (NE-V12) occurs on rich, fresh to moist fine loamy to clayey soils (S13, S14), as well as shallow, moist black organic soils (S15), similar to vegetation type NE-V11. This vegetation type may occur on ecosite types ES 1r (White Spruce-White Birch-Very Shallow Soil-Species Rich), ES 6f (Black Spruce-Trembling Aspen-Fine Soil), ES 7f, 7m, and 7c (Trembling Aspen-White Birch-Fine, Medium, & Coarse Soil, ES 10 (Trembling Aspen-Black Spruce-Balsam Poplar-Moist Soil), and ES 20 (White Pine-Hardwood Mixedwood).
overstoreyShrubs:trembling aspen (Populus tremuloides) regeneration
tall shrubsDwarf Shrubs & Herbs:mountain maple (Acer spicatum)low shrubs
dwarf shrubsFerns & Fern Allies:
Bryophytes:oak fern (Gymnocarpium dryopteris)
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.Schreber's feathermoss (Pleurozium schreberi)