Summary:
Published in The Forestry Chronicle 79(6): 1093-1106
In mixed tolerant hardwood – white pine stands of Southwestern Québec, the effects of group selection cutting on eastern white pine (Pinus strobus L.), red oak (Quercus rubra L.), yellow birch (Betula alleghaniensis Britton) and paper birch (Betula papyrifera Marsh.) regeneration are compared to the currently used single-tree selection cutting. The experimental design, initiated in 1998, comprised three cover reduction treatments (circular gap (45 m, 1590 m2)), 25% and 35% single-tree selection cutting), two scarification treatments (scarified and non-scarified) and two seeding treatments for white pine (seeded and non-seeded). The effect of white pine seed predation was studied in the gaps and the adjacent understory, with exclosures for small mammals. After three years, scarification had a positive effect on white pine, yellow birch and paper birch regeneration but also on aspen (Populus spp.) and pin cherry (Prunus pensylvanica L.f.) in the three cover reduction treatments. Red oak regeneration was negatively affected by scarification. Shade-tolerant species (sugar maple (Acer saccharum Marsh.) and American beech (Fagus grandifolia Ehrh.)) tended to be less present in the regeneration gaps than in the single-tree selection cutting. Considering that white pine seed predation can be critical in mixed tolerant hardwood – white pine stands, a greater rate of seeding is recommended for direct seeding.
File:
Sector(s):
Forests
Catégorie(s):
Scientific Article
Theme(s):
Forestry Research, Forests
Departmental author(s):
Author(s):
RAYMOND, Patricia, Alison D. MUNSON, Jean-Claude RUEL and Philippe NOLET
Year of publication:
2003
Format:
Keyword(s):
Pinus strobus, Betula alleghaniensis, Quercus rubra, Betula papyrifera, silviculture of natural forests, group selection cutting, regeneration gap, single-tree selection cutting, tolerant hardwoods, eastern white pine, yellow birch, paper birch, red oak, scarification, direct seeding, regeneration, seed predation