Impacts de différents scénarios sylvicoles sur la diversité des coléoptères dans la sapinière à bouleau blanc, 20 ans après perturbations

Authors: Norvez, Olivier
Advisor: Bélanger, LouisHébert, Christian
Abstract: We compared three silvicultural scenarios implemented 20 years ago after salvage logging of severely damaged balsam fir/white birch stands by the spruce budworm. The study area was located in the réserve faunique des Laurentides and Parc national de La Jacques-Cartier. Overall, 3124 beetles were captured with impact traps, 168 species being saproxylic (dependent of dead wood or moribund trees) and 98 non-saproxylic. Despite the relatively high amounts of down dead wood (46m³/ha) found in managed stands, saproxylic beetle assemblages differed among salvaged and non salvaged stands, even if beetle abundance and richness were similar. Slight differences were observed between the three silvicultural scenarios but 20 years later, salvage logging still appears as the disturbance element that brought the most important changes into the biotope.
Document Type: Mémoire de maîtrise
Issue Date: 2011
Open Access Date: 18 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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