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    Author(s): Michael A. Marsden; Bov B. Eav; Matthew K. Thompson
    Date: 1993
    Source: Gen. Tech. Rep. RM-250. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 9 p
    Publication Series: General Technical Report (GTR)
    Station: Rocky Mountain Forest and Range Experiment Station
    PDF: View PDF  (2.4 MB)

    Description

    Douglas-fir beetle (Dendroctonus pseudotsugae Hopk.) occurs throughout the range of its principal host, Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). At epidemic levels, the beetle causes considerable mortality in large-diameter Douglas-fir trees. Wind storms, drought, fire, and other factors have been reported as precedent conditions for epidemics of Douglas-fir beetle. An impact model has been developed to simulate tree mortality during such epidemics. The model has been linked to the Stand Prognosis Model (Forest Vegetation Simulator). This is a guide for using the model.

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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

    Marsden, Michael A.; Eav, Bov B.; Thompson, Matthew K. 1993. User's guide to the Douglas-fir beetle impact model. Gen. Tech. Rep. RM-GTR-250. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 9 p.

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    Keywords

    Dendroctonus pseudotsugae, Pseudotsuga menziesii, Douglas-fir beetle, simulation, stand modeling, tree mortality, prognosis

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