|Downloadable||Overstory and regeneration data from the "Rehabilitation of cutover mixedwood stands" study at the Penobscot Experimental Forest ||This data package contains crop tree, overstory, sapling, and regeneration data collected at the Penobscot Experimental Forest in Maine between 2008 and 2017. These data were collected as part of the 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.
||This study was used to determine the rehabilitation abilities of mixedwood stands that had been subjected to repeated commercial clearcutting harvest.||2008-01-01 (ongoing)|
|Downloadable||Overstory Tree and Regeneration Data from the "Management Intensity Demonstration" Study: Penobscot Experimental Forest||This data publication contains overstory and sapling tree measurements, seedling stocking tallies, and permanent sample plot location data collected from 1950 to 2011 at the Penobscot Experimental Forest 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.||To compare the regeneration of a forest after different management regimes which include selection cutting on 5-year and 15-year cycles, fixed diameter-limit cutting and unregulated harvest.||1950-01-01 (ongoing)|
|Downloadable||Overstory tree and regeneration data from the "Silvicultural Effects on Composition, Structure, and Growth" study at Penobscot Experimental Forest||Data provide information about the interaction of natural and human disturbances and their effects on forest stand dynamics. This data publication contains overstory tree measurements, regeneration data, 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. ||The primary objective of the long-term silvicultural study, called the Compartment Management Study, conducted by the USDA Forest Service at the Penobscot Experimental Forest (PEF) is to quantify tree 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.||1952-01-01 (ongoing)|