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    Author(s): Boyd E. Wickman
    Date: 1965
    Source: Res. Paper PSW-RP-20. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U. S. Department of Agriculture; 14 p
    Publication Series: Research Paper (RP)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (1.5 MB)

    Description

    The principal tree degrade was caused by blue stain fungi introduced by bark beetles and flatheaded borers. Roundheaded borers caused the most serious wood boring. Smaller trees suffered more degrade than larger, and degrade was more severe below 5,000 feet elevation. Degrade due to insects was not as heavy as expected, probably because of cool summer weather and low insect populations before the wind damage.

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    Citation

    Wickman, Boyd E. 1965. Insect-caused deterioration of windthrown timber in northern California, 1963-1964. Res. Paper PSW-RP-20. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U. S. Department of Agriculture; 14 p

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