Abstract for CNVC00333


Populus tremuloides – P. balsamifera / Alnus incana – Cornus stolonifera

Trembling Aspen – Balsam Poplar / Speckled Alder – Red-osier Dogwood
Peuplier faux-tremble – Peuplier baumier / Aulne rugueux – Cornouiller stolonifère

CNVC00333 is a boreal hardwood forest Association that is described from northwestern Ontario and likely ranges into Manitoba. It has a closed canopy of trembling aspen (Populus tremuloides) and/or balsam poplar (P. balsamifera) overtopping a dense tall shrub layer dominated by speckled alder (Alnus incana) and/or green alder (A. viridis) and red-osier dogwood (Cornus stolonifera). Squashberry (Viburnum edule), swamp red currant (Ribes triste), prickly rose (Rosa acicularis), showy mountain-ash (Sorbus decora), red raspberry (Rubus idaeus) and regenerating balsam poplar and black spruce (Picea mariana) are usually present. The herb layer is dense and typically includes dwarf raspberry (Rubus pubescens), bunchberry (Cornus canadensis), naked mitrewort (Mitella nuda), northern starflower (Lysimachia borealis), woodland horsetail (Equisetum sylvaticum), tall bluebells (Mertensia paniculata), yellow clintonia (Clintonia borealis), wild lily-of-the-valley (Maianthemum canadense), arctic sweet coltsfoot (Petasites frigidus) and lower constancy and cover of several other species. 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), knight’s plume moss (Ptilium crista-castrensis) and stairstep moss (Hylocomium splendens). CNVC00333 occurs in a region with a subhumid continental boreal climate. 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 flooding.