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Go to:37. Environmental Factors Affecting Advance Regeneration of Allegheny Hardwoods

Go to:39. The Effect of Deer Fencing Erected After Clearcutting on Allegheny Hardwood Reproduction

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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #38

The Effect of Several Intensities on Cutting Advanced Regeneration
To determine the effect of 4 levels of cutting on advanced regeneration present prior to cutting and on the establishment and growth of additional regeneration.
Kane Experimental Forest
12 circular 0.001-acre plots are located in each of 4 3-acre cutting blocks.
Each of the 4 cutting blocks received one of the following treatments during 1970: 1) uncut/no treatment, 4) removal of 33% of the overstory basal area, 3) removal of 67% of the overstory basal area, 4) removal of 100% of the overstory basal area. 12 plots were randomly placed within each block and the center of each plot was permanently marked with a stake.
During 1970, all vegetation on the 0.001-acre plot were tallied for the following: 1) number of stems of all woody species present, by species and age class, 2) percent coverage of all non-woody plants present, by species or species group, 3) the species and height of the dominant stem on the plot, 4) the height of the tallest stems of black cherry, sugar maple, red maple, white ash, and other commercial species. The overstory species composition and density was recorded by tallying the number of trees intercepted by a 10-factor prism, by species. The understory or reproduction tallies above are repeated each year for 5 years to determine changes that occur in the vegetation under each of the 4 density levels.
Overstory stand density - as measured by treatment (cutting block), or by prism counts of overstory at each milacre. 
Overstory species composition - as measured by prism counts. 
Initial regeneration stocking - as measured at first tally. 
Many uncontrolled and unmeasured variables such as soil conditions, seed crops, weather, etc. These are expected to be reasonably uniform throughout the study area.

Number of stems of desirable species. 
Number of stems of undesirable species. 
Coverage of non-woody species. 
Average height of tallest stem of each species. 
Average height of the dominant stem.

Area has remained fenced since 1970.
Raw data by plot reside on DG and tally sheets are kept with written instructions and detailed maps to each stand. 
Annually, the raw data are transformed using the REGEN1 program in DG Info. System. Summarized data by plot and by stand reside in a DG-based program that can output to ASCII text files. 
Studies of Ecosystem Processes
Study plan. October 1970. David Marquis.
Establishment and Progress report. February 1972. David Marquis.
Progress report. March 1973. David Marquis.
Final report. April 1977. David Marquis.

Marquis, D. A. 1973. The Effect of Environmental Factors on Advance Regeneration of Allegheny Hardwoods, A Dissertation presented to the Faculty of the Graduate School of Yale University in Candidacy for the Degree of Doctor of Philosophy.

The above are office reports of U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, Warren, PA.

Susan Stout, USDA, Forest Service, P.O. Box 267, Irvine PA 16329. (814) 563-1040



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