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Canopy-understory Interaction Effects on Forest Population Structure

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A sequence of 49 small stands of increasing mean diameter from Menominee Forest in northern Wisconsin illustrates the development of stand structure. Density-diameter distributions of natural old-growth stands of small area or uniform structure are of a rotated sigmoid form rather than the previously reported negative exponential form. The negative exponential form seems characteristic of large forest tracts having localized patches of even-aged trees. In smaller stands where interactions between canopy and understory are important, the typical stand structure curve shows an understory phase of slow growth and high mortality, a vigorous canopy phase of relatively rapid growth and low mortality, and an older canopy phase of reduced growth and increasing mortality. Forest Sci. 21:98-108.
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Keywords: Spacing; stand growth; thinning

Document Type: Journal Article

Affiliations: Ecologists, Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830

Publication date: 1975-06-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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