Abstract for CNVC00215


Betula papyrifera – Populus tremuloides – Pinus banksiana / Acer spicatum / Clintonia borealis

Paper Birch – Trembling Aspen – Jack Pine / Mountain Maple / Yellow Clintonia
Bouleau à papier – Peuplier faux-tremble – Pin gris / Érable à épis / Clintonie boréale

CNVC00215 is a boreal mixedwood forest Association that ranges from Manitoba to Quebec. It has a closed canopy of paper birch (Betula papyrifera) and/or trembling aspen (Populus tremuloides), with jack pine (Pinus banksiana) and/or black spruce (Picea mariana). The shrub layer is dense and dominated by the tall shrubs mountain maple (Acer spicatum) and/or beaked hazelnut (Corylus cornuta), with lower abundance of regenerating balsam fir (Abies balsamea), paper birch and black spruce. The low shrubs northern bush-honeysuckle (Diervilla lonicera), early lowbush blueberry (Vaccinium angustifolium) and velvet-leaved blueberry (V. myrtilloides) are also common. The herb layer is well developed and typically includes wild sarsaparilla (Aralia nudicaulis), wild lily-of-the-valley (Maianthemum canadense), bunchberry (Cornus canadensis), yellow clintonia (Clintonia borealis), large-leaved aster (Eurybia macrophylla), northern starflower (Lysimachia borealis), rose twisted-stalk (Streptopus lanceolatus) and twinflower (Linnaea borealis). Bracken fern (Pteridium aquilinum) is sometimes abundant. The forest floor cover is mainly broad-leaf litter so the moss layer is sparse, with only minor cover of red-stemmed feathermoss (Pleurozium schreberi). CNVC00215 is an early seral condition that typically establishes after fire or harvesting. It occurs in a region with a continental boreal climate that grades from subhumid in the western portion of its range to humid in the east. It is most frequently found on mesic, nutrient-medium to rich sites. Two subassociations are distinguished, typic and Acer rubrum.