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Title: Diameter-limit harvesting: effects of residual trees on regeneration dynamics in Appalachian hardwoods

Author: DeLuca, Travis; Fajvan, Mary Ann; Miller, Gary.;

Date: 2009

Source: Northern Journal of Applied Forestry. 26(2): 52-60.

Publication Series: Scientific Journal (JRNL)

Description: Ten-years after diameter-limit harvesting in an Appalachian hardwood stand, the height, dbh, and basal area of sapling regeneration was inversely related to the degree of "overtopping" of residual trees. Black cherry and red maple were the most abundant saplings with 416.5 ± 25.7 and 152.9 ± 16.8 stems per acre, respectively. Models of black cherry height and diameter showed significant negative relationships (P < 0.05) with residual tree basal area. In addition, height, diameter, and basal area of dominant and codominant black cherry and black birch saplings were inversely related to residual tree basal area (P < 0.05), as was the basal area of red maple saplings. Alternatively, red maple sapling diameter had a significant positive relationship (P < 0.05) with residual basal area, and height was not significantly affected. Findings suggest that overall stand conditions were most favorable for the development of shade-tolerant red maple, with shade-intolerant species developing well in open areas. However, the long-term development of black cherry may be jeopardized by side shade and canopy cover. Removal of residual trees and subsequent cleaning operations are recommended to increase growth rates of shade-intolerant sapling regeneration.

Keywords: diameter-limit harvesting, black cherry, red maple, hardwood sapling development

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Deluca, Travis; Fajvan, Mary Ann; Miller, Gary. 2009. Diameter-limit harvesting: Effects of residucal trees on regeneration dynamics in Appalachian hardwoods. Northern Journal of Applied Forestry. 26(2): 52-60.


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