Titlebook: Restoration and Recovery of an Industrial Region; Progress in Restorin John M. Gunn Book 1995 Springer-Verlag New York Inc. 1995 Monitoring

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Dynamics of Plant Communities and Soils in Revegetated Ecosystems: A Sudbury Case Studyfrost action (see Chapter 7). It was once believed that revegetation of the barren soils would only be achieved if they were deeply tilled, bringing the less-contaminated soil to the surface, but Winterhalder (1974) observed that disturbance or minimal treatment of contaminated soils in the Sudbury

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Liming of Sudbury Lakes: Lessons for Recovery of Aquatic Biota from Acidification et al. 1989). In the 1980s, there were about 19,000 lakes in Ontario with a pH less than 6 (Neary et al. 1990). Roughly one-third of these lakes are near Sudbury. They were acidified by long-term emissions of sulfur dioxide from local smelters (see Chapter 3).

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