Abstract for CNVC00095

Forest
Forêt

Populus tremuloides – Picea glauca / Rosa acicularis – Viburnum edule

Trembling Aspen – White Spruce / Prickly Rose – Squashberry
Peuplier faux-tremble – Épinette blanche / Rosier aciculaire – Viorne comestible

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CNVC00095 is a boreal mixedwood forest Association that ranges from Yukon to Alberta. It has a moderately closed to closed canopy made up primarily of trembling aspen (Populus tremuloides) and white spruce (Picea glauca), although balsam poplar (Populus balsamifera), lodgepole pine (Pinus contorta) and paper birch (Betula papyrifera) are occasionally present. The shrub layer is usually well developed and typically includes prickly rose (Rosa acicularis) and squashberry (Viburnum edule), although green alder (Alnus viridis) or soapberry (Shepherdia canadensis) can be dominant shrubs. White spruce and trembling aspen regeneration commonly occurs in the shrub layer. The herb and dwarf shrub layer is well developed and usually includes bunchberry (Cornus canadensis), twinflower (Linnaea borealis), fireweed (Chamerion angustifolium), dwarf raspberry (Rubus pubescens), arctic sweet coltsfoot (Petasites frigidus), tall bluebells (Mertensia paniculata), cream-coloured vetchling (Lathyrus ochroleucus), pink pyrola (Pyrola asarifolia), wild strawberry (Fragaria virginiana) and naked mitrewort (Mitella nuda). The moss layer is poorly to well-developed depending on the amount of broad-leaf litter on the forest floor and is dominated by feathermosses (Hylocomium splendens and Pleurozium schreberi). CNVC00095 is a mid-seral condition that typically succeeds an early seral post-fire hardwood Association. It occurs in a region with a subhumid continental climate, usually on mesic nutrient-medium sites. Four subassociations are recognized: typic, Alnus viridis, Shepherdia canadensis and Betula papyrifera.

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