Abstract for CNVC00087


Populus tremuloides / Leymus innovatus

Trembling Aspen / Downy Lymegrass
Peuplier faux-tremble / Élyme innovant

CNVC00087 is a boreal hardwood forest Association that occurs in Alberta and British Columbia. It has an open to closed canopy of trembling aspen (Populus tremuloides) over a moderately developed shrub layer that typically includes prickly rose (Rosa acicularis) and soapberry (Shepherdia canadensis). The herb and dwarf shrub layer is usually dense and characterized by abundant downy lymegrass (Leymus innovatus), often accompanied by cream-coloured vetchling (Lathyrus ochroleucus), fireweed (Chamerion angustifolium), wild strawberry (Fragaria virginiana), northern bedstraw (Galium boreale) and American vetch (Vicia americana). Broad-leaf and grass litter typically covers the forest floor, so mosses are virtually non-existent. CNVC00087 occurs on mesic, nutrient-medium sites in a region with a subhumid continental climate. It is an early seral condition that typically establishes after fire. There are two subassociations, typic and Arctostaphylos uva-ursi.