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Abstract
Site conditions strongly influence where gypsy moth defohation will occur. In New England, where gypsy moths and foresta have interacted for over a century, some foreats have had a history of repeated defoliation while others have been defo1iated only rarely. The often defohated or susceptible forests characteristically grow on dry sitea such as rocky ridges or deep sands. In many esses, they have been disturbed - sometlmes frequently - by fire, Wind. snow, or ice storms. The trees in these forests. mainly dry-site oaks. often are highly favored as food by gypsy moths. are slow growing, small, and scrubby, and have abundant structura~ features such as bark flaps, deep bark fissures. and holes or wounds that are used as resting sites by gypsy moths.
Parent Publication
Citation
Houston, David R. 1983. Characteristics of Stands Susceptible and Resistant to Gypsy Moth Defoliation. In: Talerico, Robert L.; Montgomery, Michael, tech. coords. Proceedings, forest defoliator--host interactions: A comparison between gypsy moth and spruce budworms; 1983 April 5-7; New Haven, CT. Gen. Tech. Rep. NE-85. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 125.
