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Go to:36. Identification of Potential Failures in Natural Regeneration

Go to:38. The Effect of Several Intensities on Cutting Advanced Regeneration

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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #37

Environmental Factors Affecting Advance Regeneration of Allegheny Hardwoods
1) To compare the establishment and growth of 10 species of forest plants under varying levels of light exposure and soil moisture.
2) To isolate the effects of light exposure, soil moisture, temperature and soil chemical content so that the contribution of each can be determined.
Kane Experimental Forest. Stand was 75 years old in 1976.
4 blocks each contained 4 plots replicated twice over time (2-years).
For each of the plots either 0, 33, 67, or 100 percent of the basal area has been removed by cutting. Half of each 10' x 10' plot was scarified, half unscarified. Seeds of each of the 10 species were sown on each half plot and seedling responses will be measured over the following 2 growing seasons. Artificial watering was accomplished via sprinkler systems. Measurements of light, moisture, temperature, and soil chemical content will be obtained to aid in interpretation of study results. The study area was fenced to exclude deer.
Seed germination and mortality taken by treatment. Annual height growth was measured.
Independent: Part I (1st year); light exposure and soil moisture. Part II (2nd year); light exposure, soil moisture, soil temperature, soil chemical content, and seedbed condition.

Dependent: germination and mortality: 1972,1973; height growth; and dry matter production of black cherry, pin cherry, sugar maple, red maple, white ash, yellow birch, beech hemlock; hay-scented fern, and short-husk grass. 
100% inventory of surviving species and d.b.h. were taken on control plots only 1976.

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. April 1970. David Marquis.
Progress report. March 1973. David Marquis.

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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