head image
filler Home button Advanced search Herberia Partners Herbaria team members Herberia links Contact
family select
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


genus select
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


search



leaf What is an Herbarium?

leaf Genus Descriptions

leaf Species Descriptions

leaf Ontario FEC V-Types

leaf Bibliography

leaf Terminology

leaf Who Collects the Plants?

leaf Collector Biographies

leaf Nomenclature Primer

leaf Website Information

Northern Ontario Plant Database

leafleaf

Northern Ontario Vegetation Type (V-type)


NW-V12: White Pine Mixedwood


Summary: A mixedwood stand dominated by white pine and white birch in the canopy; with the white pine often forming a taller upper canopy. A variety of other conifers and hardwood species also occur in the dense lower canopy, but with less frequency. Trembling aspen and balsam fir occurred in 50% of sample plots, and other species were present in 10-40% of sample plots. Regeneration is dominated by balsam fir. The shrub layer contains both tall and low shrubs. Beaked hazel and balsam fir regen dominate the tall shrub layer, especially in western portions of northwestern Ontario, with mountain maple becoming more common towards the east. In some stands, red maple regen and roughleaf dogwood may also occur in abundance. Common low shrubs include Canada fly honeysuckle and bush honeysuckle.

The herb layer is dominated by wild sarsaparilla, largeleaf aster, and the characteristic boreal forest species. The forest floor is covered primarily by coniferous and broadleaf litter.

The NW-V12 Vegetation Type is most similar to NW-V26 (White Pine Conifer), except that, in the latter type, white birch plays a minor role in the overstorey and other hardwood species are absent. NW-V12 probably represents a successional stage of NW-V26.

Soil & Ecosite Types: The White Pine Mixedwood Vegetation Type (NW-V12) is found most commonly in the Thunder Bay/Quetico/Rainy River portions of northwestern Ontario. It occurs on ecosites NW-ES 11 (Red Pine-White Pine-Jack Pine; very shallow soil), NW-ES 15 (Red Pine-White Pine; sandy soil), NW-ES 24 (Red Pine-White Pine; fresh, fine loamy soil), and sometimes NW-ES 18 (Red Pine-White Pine; fresh, coarse loamy soil). This vegetation type occurs on deep, dry to fresh, rapidly-drained, non-calcareous, coarse-textured, upland mineral soils (mainly S1, S2, S3, S4, 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.

Trees:
overstorey:
white pine (Pinus strobus) [10]
white birch (Betula papyrifera) [8]
trembling aspen (Populus tremuloides) [5]
balsam fir (Abies balsamea) [5]
white spruce (Picea glauca) [4]
red pine (Pinus resinosa) [3]
white cedar (Thuja occidentalis) [2]
black spruce (Picea mariana) [1]
largetooth aspen (Populus grandedentata) [1]
jack pine (Pinus banksiana) [1]
red maple (Acer rubrum) [1]
regeneration:
balsam fir (Abies balsamea)
trembling aspen (Populus tremuloides)
red maple (Acer rubrum)
Shrubs:
tall shrubs:
beaked hazel (Corylus cornuta)
mountain maple (Acer spicatum)
serviceberries (Amelanchier spp.)
roundleaf dogwood (Cornus rugosa)
low shrubs:
Canada fly honeysuckle (Lonicera canadensis)
bush honeysuckle (Diervilla lonicera)
Dwarf Shrubs & Herbs:
dwarf shrubs:
twinflower (Linnaea borealis)
forbs:
wild sarsaparilla (Aralia nudicaulis)
wild lily-of-the-valley (Maianthemum canadense)
largeleaf aster (Eurybia macrophylla)
bunchberry (Cornus canadensis)
starflower (Trientalis borealis)
bluebead lily (Clintonia borealis)
rose twisted-stalk (Streptopus lanceolatus)
graminoids:
mountain rice grass (Oryzopsis asperifolia)
Bryophytes:
Schreber's feathermoss (Pleurozium schreberi)
wavyleaf moss (Dicranum polysetum)
Last Modified: