Northern Ontario Plant Database
Northern Ontario Vegetation Type (V-type)
Summary: A mixedwood stand dominated by red pine and often white birch in the overstorey. Trembling aspen and white pine were the next most common species, occurring, respectively, in 50% and 40% of sample plots. A variety of other conifer and hardwood tree species occurred with less than 30% frequency. Regeneration is dominated by balsam fir. The canopy of this V-type tends to be more open and the understorey less developed than in NW-V12. The rich shrub layer contains both low and tall shrubs, but low shrubs are more common, including bush honeysuckle, blueberries, and Canada fly honeysuckle. Tall shrubs, such as beaked hazel, serviceberry, mountain maple, and mountain alder, as well as balsam fir and red maple regen may be abundant on some sites.
The herb layer is rather poor, compared to NW-V12. It is dominated by the characteristic boreal forest species, although twinflower does not occur in significant numbers, however, wild sarsaparilla and largeleaf aster may form dense colonies. The forest floor is covered with a mixture of conifer and broadleaf litter, though feathermosses may occasionally form extensive patches on the forest floor.
The NW-V13 Vegetation Type is most similar to NW-V27 (Red Pine Conifer), except that, in the latter type, white birch plays a minor role in the overstorey and other hardwood species are absent. NW-V13 probably represents a successional stage of NW-V27.
Soil & Ecosite Types: The Red Pine Mixedwood Vegetation Type (NW-V13) occurs most commonly in the Quetico/Rainy River/Dryden regions of northwestern Ontario. It occurs most commonly on Ecosite Types ES 11 (Red Pine-White Pine-Jack Pine, very shallow soil), ES 15 (Red Pine-White Pine: sandy soil), ES 24 (Red Pine-White Pine: fresh, fine loamy soil), and sometimes on ES 18 (Red Pine-White Pine: fresh, coarse loamy soil). This V-type occurs on dry to fresh, rapidly drained, acidic (non-calcareous), coarse-textured, upland mineral soils (mainly S3, 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:red pine (Pinus resinosa) regeneration:
tall shrubs:Dwarf Shrubs & Herbs:beaked hazel (Corylus cornuta)low shrubs:
dwarf shrubs:Bryophytes:twinflower (Linnaea borealis)forbs:wild lily-of-the-valley (Maianthemum canadense)
Schreber's feathermoss (Pleurozium schreberi)