Abstract
Second-growth, tolerant hardwood stands developed rapidly and, almost entirely from shade-tolerant advance growth, regardless of cutting intensity. Non-commercial woody species were seldom important competitors. Sugar maple, associated with beech on upland and balsam fir on lowland sites, was the dominant species. Yellow birch, basswood and hemlock, important contributors to wood volumes harvested, were minor components of second-growth stands. Valuable minor species such as red oak, white ash, and black cherry had practically disappeared. The application of known techniques for regenerating disturbance-dependent species is urgently required.
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