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Recovery of late-seral vascular plants in a chronosequence of post-clearcut forest stands in coastal Nova Scotia, Canada
Abstract
We investigated the impacts of clearcutting on the ground vegetation of remnant late-successional coastal Acadian forests in southwestern Nova Scotia. Vegetation was sampled in 750 1-m2 quadrats established in 16 stands belonging to different recovery periods since clearcutting (3–54 years) and 9 late-successional forests (100–165 years) with no signs of significant human disturbance. Our objectives were to: i) describe the changes in species richness, diversity, and abundance of ground vegetation after clearcutting; ii) examine the responses of residual species (i.e., late-successional flora) to clearcutting; and iii) determine whether any forest species were restricted to or dependent upon the late-successional stages of stand development for maximal frequency and/or abundance. Although clearcutting had no immediate impact on overall alpha richness or diversity, the richness and diversity of residual plants declined after canopy removal and showed no evidence of recovery over 54 years of secondary succession. Consequently, compositional differences between secondary and late-seral stands persisted for many decades after clearcutting. Several understory herbs (e.g., Coptis trifolia (L.) , Oxalis montana (L.), Monotropa uniflora (L.)) were restricted to or attained their highest frequency and abundance in late-seral forests. These results suggest that the preservation of remnant old stands may be necessary for the maintenance of some residual plants in highly disturbed and fragmented forest landscapes in eastern Canada.
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Author information
L. Vasseur
Present address: K.C. Irving Chair in Sustainable Development, Pav. P.A. Landry, University of Moncton, New Brunswick, E1A 3E9, Canada
Affiliations
Dept. of Biology, Dalhousie University, Halifax, B3H 4J1, Canada
F.M. Moola
Dept. of Biology, St. Mary's University, Halifax, B3H 3C3, Canada
F.M. Moola & L. Vasseur
Corresponding author
Correspondence to L. Vasseur.
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Moola, F., Vasseur, L. Recovery of late-seral vascular plants in a chronosequence of post-clearcut forest stands in coastal Nova Scotia, Canada. Plant Ecology172, 183–197 (2004). https://doi.org/10.1023/B:VEGE.0000026326.09137.06
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- Clearcut logging
- Coastal temperate forest
- Community resilience
- Old-growth forest
- Residual plants
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