Abstract for CNVC00239


Betula papyrifera (Populus tremuloides) / Acer spicatum / Clintonia borealis

Paper Birch (Trembling Aspen) / Mountain Maple / Yellow Clintonia
Bouleau à papier (Peuplier faux-tremble) / Érable à épis / Clintonie boréale

CNVC00239 is a boreal hardwood forest Association that ranges from Manitoba to Quebec. It has a closed canopy dominated by paper birch (Betula papyrifera) and/or trembling aspen (Populus tremuloides). The dense tall shrub layer is usually dominated by mountain maple (Acer spicatum) and/or beaked hazelnut (Corylus cornuta) and has abundant balsam fir regeneration. Paper birch saplings and northern bush-honeysuckle (Diervilla lonicera) are also common in the shrub layer. The well-developed herb layer typically includes yellow clintonia (Clintonia borealis), wild lily-of-the valley (Maianthemum canadense), bunchberry (Cornus canadensis), wild sarsaparilla (Aralia nudicaulis), northern starflower (Lysimachia borealis) and wood ferns (Dryopteris spp.). 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). CNVC00239 occurs in a region with a boreal climate that grades from subhumid continental in the western portion of its range to very humid and more maritime in the east. It is most frequently found on mesic, nutrient-medium to rich sites. It is an early seral condition that typically establishes after fire or harvesting.