“Combining single-tree selection with group selection … may work to maintain some vertical structure while permitting regeneration of shade-intolerant species.”  (p. 271) “One kind of structure that may have promise for production and long-term maintenance of owl habitat is a multi-aged mosaic of small, even-aged groups or aggregations … in size from about 2 acres down to a quarter-acre, or possibly less. Probably this type of structure best approximates presettlement stand structures, thus warranting serious consideration.” (p. 271) “Management plans should focus on addressing undesirable trends, designing potential solutions, and proceeding experimentally to implement those plans on the landscape.” (p. 273)