project titled "Rehabilitation of cutover mixedwood stands: An economic and silvicultural assessment of alternatives". The Rehabilitation study examined two levels of intervention treatments against controls in two stands that had been subjected to repeated commercial clearcutting harvests, last occurring 20 and 25 years before. The intervention treatments were 1) moderate treatment, in which crop trees were identified and released, and 2) intensive treatment, in which crop trees were released, unacceptable growing stock was removed, and fill planting of red spruce was conducted. Available data include crop tree species, locations, diameter at beast height (DBH), height, and mortality; overstory species, locations, and DBH; regeneration tally by species; and sapling species and DBH.

est in Maine. These data were collected under the working plan: RS-NE "Cutting Practice Level Plots: Penobscot Experimental Forest" and later revisions (see Methodology citation section). This study provides data for four different management regimes: selection cutting on 5-year ("high-order") and 15-year ("good") cycles, fixed diameter-limit cutting on a 15-year cycle ("fair"), and unregulated harvest ("poor") which is also called commercial clearcutting.

and stand response to silvicultural treatment. A secondary objective of the study is to provide a variety of forest structures at one location to be used as the framework for short-term experiments in ecology and silviculture.

ta, and permanent sample plot location information collected between 1952 and 2014 under the study plan: FS-NRS-07-08-01 "Study Plan: Silvicultural effects on composition, structure and growth of Northern conifers in the Acadian Forest Region: Revision of the Compartment Management Study on the Penobscot Experimental Forest" (see Methodology citation section). Response variables include regeneration, species composition, and tree and stand growth, productivity, and quality.