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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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leaf What is an Herbarium?

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leaf Ontario FEC V-Types

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Northern Ontario Vegetation Type (V-type)


NE-V10: Trembling Aspen - Balsam Poplar - Speckled Alder

Summary: A hardwood stand type dominated by trembling aspen, which provides up to 40% cover in the canopy, but occurring as regeneration in fewer sample plots with only 2-5% cover in the understorey. In 1/3 to 2/3 of sample plots, balsam poplar provides 21-40% cover in the overstorey and 2-5% cover in the understorey. Black spruce, balsam fir, and white spruce provide little cover in the overstorey, but provide 2-10% cover in the understorey in 1/3 to 2/3 of the sample plots, with black spruce the common of these three conifer species. The relatively higher occurrence of conifer species in the understorey indicates that this vegetation type is a successional stage in a conifer forest type.

The tall shrub layer is dominated by speckled alder (21-40% cover), while wild red raspberry (6-10% cover) and prickly wild rose (2-5% cover) are the most common low shrubs. The low shrub layer is fairly rich, with serviceberry, red osier dogwood, and squashberry and 3 species of currants present in fewer than 2/3 of sample plots.

The rich herb layer, dominated by largeleaf aster (11-20% cover) and dwarf raspberry (6-10% cover), also includes sweet coltsfoot, naked miterwort, violets, and sedge species (2-5% cover each), as well as wild sarsaparilla (6-10% cover in fewer than 2/3 of the sample plots). Many other herbs, including the characteristic boreal forest species, occur with less frequency and with less than 5% cover.

The most common pteridophytes in this vegetation type include woodland horsetail, spinulose woodfern, and oak fern, which provide up to 5% cover in less than 2/3 of the sample plots. Similarly, the moss layer is sparse, due largely to the heavy layer of deciduous leaf litter, but patches of feathermosses, including Schreber's feathermoss, plume moss, and shaggy moss provide up to 5% cover.

Soil & Ecosite Types: The Trembling Aspen-Balsam Poplar-Speckled Alder Vegetation Type (NE-V10) occurs on moist, shallow organic soils (S15, S16) as well as fresh to moist fine loamy to clayey soils (S13, S14). This vegetation type may occur on ecosite types ES 6f (Black Spruce-Trembling Aspen-Fine Soil), ES 6m (Trembling Aspen-Black Spruce-Balsam Fir-Medium Soil), ES 7f (Trembling Aspen-White Spruce-White Birch-Fine Soil), ES 10 (Trembling Aspen-Black Spruce-Balsam Fir-Moist Soil), and ES 20 (White pine-Hardwood Mixedwood).

Trees:
overstorey
trembling aspen (Populus tremuloides) [8]
balsam poplar (Populus balsamifera) [5]
black spruce (Picea mariana) [3]
white spruce (Picea glauca) [2]
balsam fir (Abies balsamea) [2]
regeneration
balsam poplar (Populus balsamifera)
black spruce (Picea mariana)
white spruce (Picea glauca)
trembling aspen (Populus tremuloides)
balsam fir (Abies balsamea)
Shrubs:
tall shrubs
speckled alder (Alnus incana subsp. rugosa)
serviceberries (Amelanchier spp.)
low shrubs
wild red raspberry (Rubus idaeus)
prickly wild rose (Rosa acicularis)
bristly black currant (Ribes lacustre)
red osier dogwood (Cornus sericea)
swamp red currant (Ribes triste)
skunk currant (Ribes glandulosum)
squashberry (Viburnum edule)
Dwarf Shrubs & Herbs:
dwarf shrubs
dwarf raspberry (Rubus pubescens)
forbs
largeleaf aster (Eurybia macrophylla)
naked mitrewort (Mitella nuda)
sweet coltsfoot (Petasites frigidus var. palmatus)
violets (Viola spp.)
fragrant bedstraw (Galium triflorum)
wild-lily-of-the-valley (Maianthemum canadense)
wild sarsaparilla (Aralia nudicaulis)
bunchberry (Cornus canadensis)
Lindley's or northern heartleaf aster (Symphyotrichum ciliolatum)
wild strawberry (Fragaria virginiana)
fireweed (Chamerion angustifolium)
northern bluebells (Mertensia paniculata)
bluebead lily (Clintonia borealis)
wood anemone (Anemone quinquefolia)
starflower (Trientalis borealis)
graminoids
sedges (Carex spp.)
Canada bluejoint (Calamagrostis canadensis)

Ferns & Fern Allies:
horsetails
woodland horsetail (Equisetum sylvaticum)
field horsetail (Equisetum arvense)
ferns
spinulose woodfern (Dryopteris carthusiana)
oak fern (Gymnocarpium dryopteris)
rattlesnake fern (Botrychium virginianum)

Bryophytes:
Schreber's feathermoss (Pleurozium schreberi)
plume moss (Ptilium crista-castrensis)
shaggy moss (or electrified cat's-tail) (Rhytidiadelphus triquetrus)
sickle moss (Sanionia uncinata)
woodsy moss (Plagiomnium cuspidatum)
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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