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    Author(s): Robert O. Curtis; Constance A. HarringtonLeslie C. Brodie
    Date: 2017
    Source: Res. Pap. PNW-RP-610. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 28 p.
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (4.0 MB)

    Description

    This report gives early results, 18 years after treatment and 30 years after planting, from a trial of early thinning and gap creation intended to increase biodiversity in a very uniform extensive Douglas-fir plantation. Gap creation has introduced canopy irregularity and a substantial hemlock component into what was originally a very uniform pure Douglas-fir plantation, produced some natural regeneration of Douglas-fir, and considerably changed diameter distributions. Long-term effects will depend on whether additional stand density manipulation is carried out in coming years.

    Publication Notes

    • Visit PNW's Publication Request Page to request a hard copy of this publication.
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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Curtis, Robert O.; Harrington, Constance A.; Brodie, Leslie C. 2017. Stand development 18 years after gap creation in a uniform Douglas-fir plantation. Res. Pap. PNW-RP-610. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 28 p.

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    Keywords

    Pseudotsuga menziesii, variable density thinning, biodiversity, stand structure.

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