Abstract for CNVC00241


Populus tremuloides (P. balsamifera) / Alnus incana / Eurybia macrophylla

Trembling Aspen (Balsam Poplar) / Speckled Alder / Large-leaved Aster
Peuplier faux-tremble (Peuplier baumier) / Aulne rugueux / Aster à grandes feuilles

CNVC00241 is a boreal hardwood forest Association that ranges from Manitoba to Quebec. It has a closed canopy of trembling aspen (Populus tremuloides) and/or balsam poplar (P. balsamifera) overtopping a dense tall shrub layer that is dominated by speckled alder (Alnus incana), with lower abundance of red raspberry (Rubus idaeus) and regenerating trembling aspen and balsam fir (Abies balsamea). Mountain maple (Acer spicatum) is less common but can be locally abundant. The herb layer is usually dense and typically includes dwarf raspberry (Rubus pubescens), wild lily-of-the-valley (Maianthemum canadense), large-leaved aster (Eurybia macrophylla), bunchberry (Cornus canadensis), wild sarsaparilla (Aralia nudicaulis) and yellow clintonia (Clintonia borealis), with lower constancy and cover of several other species. Grasses (Poaceae) can be abundant where present. 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). CNVC00241 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 primarily found on moist, nutrient-rich sites; these are some of the most productive sites in the region. It is an early seral condition that typically establishes after fire or harvesting. Two subassociations are distinguished, typic and Populus balsamifera.