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Go to:67. Undergrowth and Small Mammal Response to Overstory Stocking Levels. (Undergrowth Project - Vegetation)

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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #66

Group Selection for Uneven-age Management
1) To determine the effect of the size of the group selection harvesting techniques on: 1) growth and yield, 2) quality, and 3) regeneration in mixed oak-hickory stands.

2) To relate the effect of the size of the group selection opening to: 1) species composition, quality, growth and yield within openings, 2) the effect on trees bordering the opening and 3) stand growth as a whole.

tract 1: 1954 tract 2: 1957
expected to continue
Vinton Furnace Experimental Forest near McArthur, OH. Approximately 39 deg. 12 min N lat., 82 deg. 24 min. W. long. The study area straddles Irish run, a first order stream flowing east to west, and extends to adjacent ridgetops ranging in elevation from 700' to 900'. The 2 tracts lie between West Rd. and Yellow Jacket Rd., from ridge to ridge at the end of the roads. Tract 1 is south of Irish Run while Tract 2 is north of Irish Run. Soils are Germano-Gilpin complex on southerly aspects and Steinsburg-Gilpin complex on northerly aspects. Depth of A'horizon ranged from 0" to 4" and 0" to 2" respectively and texture is sandy to silty loam. Slopes range from 6% to 70%. Site index ranged from 52 to 93.
Tract 1 is 20.86 acres divided into 15 sectors. Tract 2 is 19.3 acres divided into 14 sectors. Sectors are 66' wide and vary in length. Cutting areas were dispersed within each tract such that only occasionally were there contiguous cutting areas within or between tracts. Cutting areas were generally between 0.25 and 0.75 acres.
All areas cut in 1955 to 1960 were surveyed by sector. Tracts, sectors, clear-cut and single-tree openings were mapped: 1989. Openings were complete, site index was computed from felled trees, skidded areas were graded and seeded, and logging debris was slashed: 1990. 
Treatment on both tracts include periodic small clear-cuts to completely regenerate the stand, coupled with an initial free thinning. Subsequent treatments were done by clearcutting a prescribed portion of each tract at each harvesting cycle. Tract 1 was on a 10-year cycle, tract 2 was on a 5-year cycle, and tract 3 was on a yearly cutting cycle and had been cut approximately 6 times. Cutting stopped on this study in 1962. 
In 1989, tracts 1 and 2 were surveyed in total, by sector and for all areas cut in 1955 to 1960. About half of the 2 tracts selected as representative of the area. Plots were cut in 1990, with attempts to reduce the visual impact of logging, which was the second of 4 30-year interval cuts in a 120-year cutting cycle. A free thinning was imposed on tract 1 in addition to block cutting while tract 2 was block cut only with no thinning between blocks. 
Cutting Cycle for the 2 tracts is as follows:
Tract 1
Tract 2

Tracts, sectors, clear-cut and single-tree openings mapped: 1989.
Site index computed from felled trees: 1989. 
Skid trails and landings graded and seeded, logging debris slashed: 1989.
5 camera sites were installed: 1990

Data collected are divided into two principal areas: 1) Tree Growth/Volume (represented by species, d.b.h., crown class, and border tree status) and 2) Tree Grade/Quality (represented by species, d.b.h., acceptability as growing stock, actual and potential tree grade, grading section, cull/defect, and border tree status). All trees >4.6" d.b.h. were tallied by species and diameter except in those areas cut about 1960 that were 1.5 acres and larger. In those larger areas cut about 1960, all trees >2.6" d.b.h. Were tallied by species and diameter. All trees >4.6" d.b.h. Were designated as either acceptable or unacceptable growing stock. All trees > 11.6" d.b.h. Were evaluated for actual and potential tree grade, merchantable height and percent cull. Areas cut about 1960 that were >0.5 acres were surveyed and mapped. Additionally, single tree openings dating to about 1960 were located, measured for radius in 4 directions and mapped.
d.b.h. to nearest 0.1" by species: 1989, 1991. Actual tree grade: 1989, 1991. Potential tree grade: 1989, 1991. Cull, sweep and rot %: 1989, 1991.
Field data are verified when entered into computer. Field crews were trained by experienced field personnel.
Available data are maintained in an ORACLE database (SASQUATCH) according to the following categories: study description, stand density plot data, plot history, plot summaries, ingrowth summaries, plot treatments, species descriptions, ecological data, size of opening data. Hardcopy of some tally sheets are maintained in file cabinets.
Studies of Ecosystem Processes
Landscape Scale Studies
none to date
Dan Yaussy, USDA Forest Service, 359 Main Road, Delaware, OH 43015. (740) 368-0093



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