Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 67, Issue 1-2, Pages 97-108Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1006464511158
Keywords
forest disturbance; ice storm; monitoring; northern hardwood forest; old-growth forest; tree damage; tree recovery
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We quantified the damage caused by a major ice storm to individual trees in two 1-ha permanent plots located at Mont St. Hilaire in southwestern Quebec, Canada. The storm, which occurred in January 1998, is the worst on record in eastern North America; glaze ice on the order of 80-100 mm accumulated at our study site. All but 3% of the trees (DBH greater than or equal to 10 cm) lost at least some crown branches. and 35% lost more than half their crown. Damage to trees increased in the order: Tsuga canadensis, Betula alleghaniensis, Ostrya virginiana, Acer saccharum, Fagus grandifolia, Quercus rubra, Betula papyrifera, Acer rubrum, Tilia americana, and Fraxinus americana. Only 22% of the saplings and small trees (4 cm < DBH < 10 cm) escaped being broken or pinned to the ground by falling material. Levels of damage generally were greater in an exposed ridge top forest than in a cove protected from wind. By August 1999 only 53% of the trees had new shoots developing from the trunk or broken branches; among the more dominant canopy trees, Fagus grandifolio had the least sprouting and Acer sarcharum and Quercus rubra the most. We anticipate and will monitor both significant turnover in the tree community and some shift in composition of the canopy dominants.
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