Abstract for CNVC00125


Populus tremuloides – Pinus banksiana / Vaccinium myrtilloides / V. vitis-idaea

Trembling Aspen – Jack Pine / Velvet-leaved Blueberry / Lingonberry
Peuplier faux-tremble – Pin gris / Bleuet fausse-myrtille / Airelle rouge

CNVC00125 is a boreal mixedwood forest Association that ranges from Alberta to Ontario. It has a moderately closed to closed canopy of trembling aspen (Populus tremuloides) and jack pine (Pinus banksiana), but paper birch (Betula papyrifera) and/or black spruce (Picea mariana) can also be canopy constituents. The shrub layer is usually moderately developed but varies depending on the patchiness of shrubs. It usually includes velvet-leaved blueberry (Vaccinium myrtilloides), prickly rose (Rosa acicularis) and, in larger canopy openings, trembling aspen saplings. Green alder (Alnus viridis), common Labrador tea (Rhododendron groenlandicum) and regenerating black spruce dominate the shrub layer of their respective subassociations. The herb and dwarf shrub layer is usually moderately developed; it commonly includes twinflower (Linnaea borealis), wild-lily-of-the-valley (Maianthemum canadense), lingonberry (V. vitis-idaea) and bunchberry (Cornus canadensis). The moss layer is poorly to well developed, depending on the amount of broad-leaf litter on the forest floor. It usually includes red-stemmed feathermoss (Pleurozium schreberi) and stairstep moss (Hylocomium splendens). CNVC00125 is an early seral condition that typically establishes after fire or harvesting. It occurs in a region with a subhumid continental boreal climate and is usually found on dry to mesic, nutrient-poor to medium sites. Four subassociations are distinguished: typic, Alnus viridis, Rhododendron groenlandicum and Picea mariana.