Effects of clearcutting on the vegetation and soil of a sugar maple-dominated ecosystem,western upper Michigan |
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| Institution: | 1. University of Edinburgh, School of GeoSciences, Crew Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK;2. Department of Sustainable Soil and Grassland Systems, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK;1. Researcher in Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, Tartu, 51014, Estonia;2. Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Estonia;1. Philadelphia Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania;2. University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania;3. University of Toronto, Toronto, Ontario, Canada;4. University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania;5. University of Texas Southwestern, Dallas, Texas;6. University of California, San Francisco, San Francisco, California;7. Virginia Commonwealth University, Richmond, Virginia;8. Virginia Mason Medical Center, Seattle, Washington;9. California Pacific Medical Center, San Francisco, California;10. Beth Israel Deaconess Medical Center, Boston, Massachusetts;11. Mayo Clinic, Rochester, Minnesota;12. University of Minnesota, Minneapolis, Minnesota;13. University of Washington Medical Center, Seattle, Washington;14. National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland;15. University of Michigan, Ann Arbor, Michigan;1. The Czech Academy of Sciences, Institute of Botany, Department of Functional Ecology, Dukelská 135, 379 82, Třeboň, Czech Republic;2. ZO ČSOP Bílé Karpaty, Bartolomějské nám. 47, 698 01, Veselí nad Moravou, Czech Republic;3. OSEVA Development and Research Ltd., Hamerská 698, 756 54, Zubří, Czech Republic;1. Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA;2. Spectrum Health Hospitals Advanced Heart Failure Clinic, Grand Rapids, MI, USA;3. Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, OH, USA;4. Section of Heart Failure and Transplantation, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, OH, USA;5. Department of Thoracic and Cardiovascular Surgery, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, OH, USA |
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| Abstract: | The effects 50 years after clearcutting on the vegetation and soil of an ecosystem type dominated by sugar maple (Acer saccharum) were studied at four locations along the boundaries of the Sylvania Recreation Area (Ottawa National Forest) in western Upper Michigan, U.S.A. Commercially clearcut areas along the boundaries of the undisturbed 8500-ha tract enabled study of vegetation and soil in paired cut and uncut plots. Overstories of the clearcut plots exhibit increased stem densities and decreased basal area and stem diameters compared to those of uncut plots. Both the relative density of understory sugar maple and the total density of all understory trees decreased significantly on the clearcut plots. Groups of herbaceous species characteristic of the ground cover of the clearcut plots were identical to those found on the uncut plots.There was no change in (1) thickness, mass, or total nutrient (K+, Mg2+, Ca2+) contents of the forest floor, or (2) acidity of the upper horizons of the mineral soil. The exchangeable potassium levels in the upper horizons of the mineral soil decreased significantly, and also there was a decreasing trend in the levels of exchangeable calcium and magnesium. |
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