Aspen Bibliography


Silvicultural options for early-successional stands in Maine: 6-year results of the Silvicultural Intensity and Species Composition Experiment

Document Type

Contribution to Book


Penobscot Experimental Forest: 60 years of research and demonstration in Maine, 1950-2010. Gen. Tech. Rep. NRS-P-123. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station


Kenefic, Laura S.; Brissette, John C., comps

First Page


Last Page


Publication Date



The Silvicultural Intensity and Species Composition (SIComp) experiment was installed in 2003 on a recently clearcut mixedwood site within the Penobscot Experimental Forest in east-central Maine. This study was initiated because the response of early-successional stands to various intensities of silviculture was poorly understood in the region. The goal of SIComp is to shift stand development and composition in multiple directions through a factorial combination of three silvicultural intensities (low, medium, and high) and three objectives for species composition (hardwood, mixedwood, and conifer). To date, the experiment has documented the survival, growth, and yield of hybrid poplar and planted white spruce plantations, the effects of precommercial thinning in juvenile aspen stands, the response of early-successional stands to conifer release treatments, and alternative approaches for managing young mixedwood stands. Current investigations are focused on mechanistic responses to the heterogeneous growing conditions created by the varied treatments in the experiment. Energy (labor, petroleum, and pesticide) inputs required to establish and maintain the experiment also will be incorporated into models estimating net carbon balance and value of the various treatments over time.


This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.