Mountain maple and balsam fir early response to partial and clear-cut harvesting under aspen stands of northern Quebec

  • Published source details Bourgeois L., Messier C. & Brais S. (2004) Mountain maple and balsam fir early response to partial and clear-cut harvesting under aspen stands of northern Quebec. Canadian Journal of Forest Research, 34, 2049-2059.


This study is summarised as evidence for the following.

Action Category

Use clearcutting to increase understory diversity

Action Link
Forest Conservation
  1. Use clearcutting to increase understory diversity

    A replicated, randomized, controlled study in 1998-2001 in boreal forest in Quebec, Canada (Bourgeois, Messier & Brais 2004) found that clearcutting increased the density of new mountain maple Acer spicatum stems and the relative regrowth rates of mountain maple and balsam fir Abies balsamea compared with thinning. Density of new mountain maple stems was higher in clearcut (13 stems/m2), compared to 33% cut (3), 66% cut (3) and uncut plots (5). Mountain maple relative trunk growth (clearcut: 240%; 66% cut: 130%: 33% cut: 140%; uncut: 130%) and mortality rate (clearcut: 35%; 66% cut: 20%; 33% cut: 27%; uncut: 30%) were similar between treatments. Balsam fir relative height growth ratio for stems <1 m differed between the four different treatments (clearcut: 25%: 66% cut: 15%: 33% cut: 9%; uncut: 4%), while those of stems 1-3 m were similar between treatments (17%, 17%, 9% and 7% respectively). There were three replicates (1-2.5 ha) of four treatments: clearcutting, 66% cut, 33% cut and no harvest (100%, 61%, 33% and 0% of basal area removed respectively).  Plots were established in winter 1998-1999. Monitoring was in 1 m2 quadrats (120 for mountain maple, 226 for balsam fir).

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