Canadian Forest Service Publications
Interactions entre le type de plants et la sylviculture dans la restauration de sapinières sous forte pression de broutement. 2019. Brousseau, M.; Tremblay, J.-P.; Roy, V.; Thiffault, N. The Forestry Chronicle 95(1): 29-38.
Issued by: Laurentian Forestry Centre
Catalog ID: 39758
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Large herbivores transform ecosystems, especially following introduction into island environments. Plantations of balsam fir (Abies balsamea) were established on Anticosti Island (Quebec, Canada) to restore or maintain essential components of white-tailed deer (Odocoileus virginianus) habitat, a species that supports strong economic activities. In this context, our objective was to evaluate the simple and combined effects of release, stock type, and deer on balsam fir seedling survival and size. We evaluated these effects over eight years using a complete block experimental design. Our results show that on Anticosti Island, mechanical release is not useful; browsing on competing species had a similar effect to release on the planted seedlings. Our observations support the use of medium-size planting stock which reached heights sufficient to protect terminal shoots from browsing, while reducing production costs relative to large stock seedlings. Finally, sport hunting in the management enclosure efficiently reduced browsing on planted seedlings; we did not detect any effects of white-tailed deer on seedling survival and size.