Northern Ontario Plant Database
Northern Ontario Vegetation Type (V-type)
Summary: A mixedwood stand dominated by white spruce, and with considerable amounts of balsam fir and trembling aspen in the canopy. White birch and black spruce respectively occurred in 50% and 40% of sample plots, but other conifer and hardwood species occur with low frequency. The regeneration layer is dominated by balsam fir, with trembling aspen occurring in low numbers. The shrub layer is dominated by tall shrubs, such as mountain maple, beaked hazel, and showy mountain ash. Low shrubs include bush honeysuckle and prickly wild rose.
The species-rich herb layer contains wild sarsaparilla, dwarf raspberry, the characteristic boreal forest species, rose twisted-stalk, fragrant bedstraw, and largeleaf aster. The presence of kidneyleaf violet, sweet coltsfoot, and naked mitrewort indicate calcareous substrates or soils. The forest floor is covered mainly by broadleaf litter, with patches of feathermosses and conifer litter.
The White Spruce Mixedwood V-type (NW-V15) is similar to NW-V14, but NW-V15 is characterised by a white spruce-dominated canopy. It is also similar to NW-24, but this type can be distinguished by its smaller hardwood component.
Soil & Ecosite Types: The White Spruce Mixedwood (NW-V15) Vegetation Type occurs on Ecosite Types ES 21 (Fir-Spruce Mixedwood, fresh, coarse loamy soil), ES 27 (Fir-Spruce Mixedwood, fresh, silty-fine loamy soil), and ES 32 (Fir-Spruce Mixedwood, moist, silty-clayey soil). It can occur on a wide variety of soils types, but is usually found on deep, fresh to moist mineral soils (S3, S4, S10, and SS6).
Note: The percentage of sample plots that contained overstorey tree species is given in square brackets after each scientific name. Other species are listed in order of frequency, according to the NW-FEC manual.
overstorey:Shrubs:white spruce (Picea glauca) regeneration:
tall shrubs:Dwarf Shrubs & Herbs:mountain maple (Acer spicatum)low shrubs:
dwarf shrubs:Bryophytes:dwarf raspberry (Rubus pubescens)forbs:
Schreber's feathermoss (Pleurozium schreberi)