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    Author(s): Susan L. Stout; Christopher A. Nowak; James A. Redding; Robert White; William H. McWilliams; William H. McWilliams
    Date: 1995
    Source: In: L. G. Eskew, comp. Forest health through silviculture: proceedings of the 1995 National Silviculture Workshop, Mescalero, New Mexico, May 8-11, 1995. Gen. Tech. Rep. RM-GTR-267. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 79-86
    Publication Series: Miscellaneous Publication
    Station: Rocky Mountain Forest and Range Experiment Station
    PDF: View PDF  (518.91 KB)

    Description

    Since 1985 72 percent of the forest land on the Allegheny National Forest has been subject to at least one moderate to severe defoliation from any of three native or three exotic agents. In addition, droughts affected the forest in 1972, 1988 and 1991. As a result, at least 20 percent of the forest shows tree mortality in from 10 to 80 percent of the overstory trees. Sugar maple is the most seriously affected species. The impacts of this mortality are compounded by the impacts of up to 70 years of overbrowsing by white-tailed deer. Long-term silvicultural research studies were reexamined and showed that most of the sugar maple mortality is occurring in sapling and pole-size stems, mortality is worse on dry than on wet sites, and even-age silvicultural treatments, especially thinning, are associated with reduced amounts of mortality and reduced rates of mortality.

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    Citation

    Stout, Susan L.; Nowak, Christopher A.; Redding, James A.; White, Robert; McWilliams, William H. 1995. Allegheny National Forest health. In: L. G. Eskew, comp. Forest health through silviculture: proceedings of the 1995 National Silviculture Workshop, Mescalero, New Mexico, May 8-11, 1995. Gen. Tech. Rep. RM-GTR-267. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 79-86

    Keywords

    forest health, forest damage, Allegheny National Forest (Pa.)

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