Abstract for CNVC00107


Pinus contorta / Alnus viridis / Arnica cordifolia / Pleurozium schreberi

Lodgepole Pine / Green Alder / Heart-leaved Arnica / Red-stemmed Feathermoss
Pin tordu / Aulne vert / Arnica à feuilles cordées / Pleurozie dorée

CNVC00107 is a boreal coniferous forest Association that occurs in Alberta and British Columbia. It has a moderately closed canopy dominated by lodgepole pine (Pinus contorta), sometimes with black spruce (Picea mariana) and/or white spruce (P. glauca) as canopy constituents. Shrub layer development is variable, from poorly developed to dense, depending on the patchiness of shrubs. Common Labrador tea (Rhododendron groenlandicum) is typically present and can be abundant. Green alder (Alnus viridis) and mountain huckleberry (Vaccinium membranaceum) occur less frequently but can be dominant on some sites. The herb and dwarf shrub layer is moderately to well developed and typically includes bunchberry (Cornus canadensis), twinflower (Linnaea borealis), fireweed (Chamerion angustifolium), lingonberry (Vaccinium vitis-idaea), stiff clubmoss (Lycopodium annotinum) and heart-leaved arnica (Arnica cordifolia). The moss layer is typically well developed with abundant red-stemmed feathermoss (Pleurozium schreberi), knight’s plume moss (Ptilium crista-castrensis) and stairstep moss (Hylocomium splendens). CNVC00107 occurs on mesic, nutrient-medium sites in a region with a subhumid continental climate. It typically establishes as the first cohort after fire. Four subassociations are distinguished: Vaccinium membranaceum, Alnus viridis, Rhododendron groenlandicum and inops.