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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #52

Methods of Cutting Allegheny Hardwoods, Little Arnot Plots 1-4
To determine the effect of cutting method on growth of the remaining stand and on subsequent reproduction in the Allegheny Hardwoods.
Plots 1,2,3: 1972; Plot 4 expected to continue
Near Little Arnot Creek, Warren County, Pennsylvania (Mead Township) within the Allegheny National Forest. Plots were predominately hemlock prior to 1868. In 1927, the stand had very few hemlock trees and comprised a high percentage of sugar and red maple, yellow birch, beech, black cherry, ash and basswood. Elevation ranges from 85' to 270' and estimated slopes range from 15% to 80%. Plots 1, 2 and 4 lie on a S45E facing slope while plot 3 faces due East. Soil conditions for each horizon are similar for all plots. Soil acidity ranged from 5.10 pH to 7.29 pH.
4 1-acre plots
Plot 1: 
Large, mature and over-mature tree were selectively removed: 1927 Diseased and poorly-formed pole-size stems and old defective beech were removed for chemical wood: 1929 to 1930. Hurricane strike - stand destroyed: 1972.

Plot 2: 
Control plot. 5 hemlocks were cut prior to plot establishment in 1927. Hurricane strike - stand destroyed: 1972.

Plot 3: 
Minimum diameter limit cut applied (8" for beech and sugar maple, 14" for cherry,ash and basswood): 1972. Large trees marked for chemical wood were removed: 1928. Hurricane strike - stand destroyed: 1972.

Plot 4: 
Merchantable sawlogs were removed: 1927. All remaining trees were cut with the exception of 24 trees, 8 of which died before 1932: 1929.

During 1927, 100% inventory of all trees on 4 plots were taken before and after cutting.
100% inventory of all 4 plots: species, d.b.h, frequency: 1927, 1937, 1947, 1958. 
100% inventory of plot 4 only: species, d.b.h, frequency: 1972, 1978, 1984, 1989.
Data visually checked during computer entry. Camera points are maintained every 5 years.
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 
Studies of Ecosystem Processes
each request is reviewed
Establishment report. 1929. A. F. Hough
Office report. Notes on the Probable character of the Little Arnot Area in its Virgin State and development of the stand after the 1868 cutting. 1929. A. F. Hough.
Office report. Effects of Three Degrees of harvest cutting and No cutting upon the growth, mortality and reproduction in a Sixty-year-Old hardwood-Hemlock stand. 1959. Harold Huntzinger.

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
Allegheny National Forest, PA. 



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