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    Author(s): David R. Larsen; Monte A. Metzger
    Date: 1997
    Source: Canadian Journal of Forest Research. 27: 869-875.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (106.6 KB)

    Description

    Reducing overstory density is a commonly recommended method of increasing the regeneration potential of oak (Quercus) forests. However, recommendations seldom specify the probable increase in density or the size of reproduction associated with a given residual overstory density. This paper presents logistic regression models that describe this relation for a forest in the Ozark Highlands of Missouri that has been managed for 40 years by the single-tree selection system. In general, density of oak reproduction of a given size increases with decreasing residual stand basal area. However, the corresponding increase in the reproduction density at all levels of overstory density indicates low predictability of individual stands. The models nevertheless describe the average trend in the highly stochastic regeneration process. They also suggest that stand densities must be kept low (e.g., basal areas <14 m2·ha-1) to sustain the requisite recruitment of reproduction into the overstory under the single-tree selection method.

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    Citation

    Larsen, David R.; Metzger, Monte A.; Johnson, Paul S. 1997. Oak regeneration and overstory density in the Missouri Ozarks. Canadian Journal of Forest Research. 27: 869-875.

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