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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


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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


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Northern Ontario Vegetation Type (V-type)


NE-V8: Trembling Aspen - Black Spruce - Herb Poor

Summary: A mixedwood stand type dominated by trembling aspen (21-40% cover) and black spruce (11-20% cover), and with a variety of other conifers and white birch providing up to 20% cover in fewer than 2/3 of the sample plots. The understorey is dominated by regeneration of balsam fir (11-20% cover) and black spruce (6-10% cover), indicating succession to a conifer stand type in the future. The low shrub layer is more consistent than the tall shrub layer, with bush honeysuckle providing the most cover (6-10%), followed by lowbush and velvetleaf blueberries (2-5% cover). Mountain maple, beaked hazel, showy mountain ash, serviceberries, and prickly wild rose may also be present.

The herb layer supports a moderate number of species, including the characteristic boreal forest species (each providing 2-10% cover each) and wild sarsaparilla (2-5% cover). In fewer than 2/3 of sample plots, largeleaf aster (6-10% cover), dwarf raspberry and goldthread (2-5% cover), as well as creeping snowberry, rose twisted-stalk, violets, and a variety of clubmosses may also occur in small numbers.

The forest floor has a layer of mixed deciduous and coniferous leaf litter, with scattered patches of Schreber's feathermoss (11-20% cover), plume moss (2-5% cover), with occasional, smaller patches of stairstep moss, Dicranum mosses, and common haircap moss.

Soil and Ecosite Types: The Trembling Aspen-Black Spruce-Herb Poor Vegetation Type (NE-V8) occurs mainly on fresh to moist, sandy to silty soils, including dry to fresh calcareous sandy soils (S2), dry to moist non-calcareous (acidic) sandy soils (S1, S3), and dry to moist acidic coarse loamy soils (S5, S7). This vegetation type (NE-V8) occurs on a variety of ecosite types, most commonly on ES 6c (Trembling Aspen-White Birch-Coarse Soil) and ES 3 (White Birch-Trembling Aspen-Black Spruce-Coarse Soil), but it may also occur on types ES 1r (White Spruce-White Birch-Very Shallow Soil-Species Rich), ES 5f and 5m (Black Spruce-Fine and Medium Soils), ES 6f (Black Spruce-Trembling Aspen-Fine Soil) ES 6m (Trembling Aspen-Black Spruce-Balsam Fir-Medium Soil), ES 7m and7c (Trembling Aspen-White Birch-Medium and Coarse Soils), ES9r (White Spruce-Balsam Fir-White Cedar-Moist Soil-Species Rich), ES10 (Trembling Aspen-Black Spruce-Balsam Poplar-Moist Soil), ES18 (Jack Pine-White Pine-Red Pine), and ES19 (White Pine-Red Pine-Mixedwood).

Trees:
overstorey
trembling aspen (Populus tremuloides)
black spruce (Picea mariana) [7]
jack pine (Pinus banksiana) [5]
white spruce (Picea glauca) [4]
balsam fir (Abies balsamea) [4]
white birch (Betula papyrifera) [4]
red pine (Pinus resinosa)
white pine (Pinus strobus)
red maple (Acer rubrum)
regeneration
balsam fir (Abies balsamea)
black spruce (Picea mariana)
white birch (Betula papyrifera)
white spruce (Picea glauca)
trembling aspen (Populus tremuloides)

Shrubs:
tall shrubs
mountain maple (Acer spicatum)
beaked hazel (Corylus cornuta)
showy mountain ash (Sorbus decora)
serviceberries (Amelanchier spp.)
low shrubs
bush honeysuckle (Diervilla lonicera)
lowbush blueberry (Vaccinium angustifolium)
velvetleaf blueberry (Vaccinium myrtilloides)
prickly wild rose (Rosa acicularis)

Dwarf Shrubs & Herbs:
dwarf shrubs
twinflower (Linnaea borealis)
dwarf raspberry (Rubus pubescens)
creeping snowberry (Gaultheria hispidula)
forbs
bunchberry (Cornus canadensis)
wild lily-of-the-valley (Maianthemum canadense)
bluebead lily (Clintonia borealis)
wild sarsaparilla (Aralia nudicaulis)
starflower (Trientalis borealis)
largeleaf aster (Eurybia macrophylla)
goldthread (Coptis trifolia)
rose twisted-stalk (Streptopus lanceolatus)
violets (Viola spp.)

Ferns & Fern Allies:
clubmosses
bristly (or interrupted) clubmoss (Lycopodium annotinum)
ground pine (Lycopodium dendroideum or Lycopodium obscurum)
running (or wolf's-claw) clubmoss (Lycopodium clavatum)

Bryophytes:
Schreber's feathermoss (Pleurozium schreberi)
plume moss (Ptilium crista-castrensis)
wavyleaf moss (Dicranum polysetum)
stairstep moss (Hylocomium splendens)
common haircap moss (Polytrichium commune)
brachythecium moss (Brachythecium spp.)
dusky broom moss (or curly heron's-bill) (Dicranum fuscescens)

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.
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