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  1. Ponderosa pine mortality resulting from a mountain pine beetle outbreak

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    Author(s): William F. McCambridge; Frank G. Hawksworth; Carleton B. Edminster; John G. Laut
    Date: 1982
    Source: Res. Paper RM-RP-235. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 7 p.
    Publication Series: Research Paper (RP)
    Station: Rocky Mountain Forest and Range Experiment Station
    DOI: https://doi.org/10.2737/RM-RP-235
    PDF: View PDF  (855 B)

    Description

    From 1965 to 1978, mountain pine beetles killed 25% of the pines taller than 4.5 feet in a study area in north-central Colorado. Average basal area was reduced from 92 to 58 square feet per acre. Mortality increased with tree diameter up to about 9 inches d.b.h. Larger trees appeared to be killed at random. Mortality was directly related to number of trees per acre and presence of dwarf mistletoe, but not to site index, elevation, and percent Douglas-fir in the stand.

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    Citation

    McCambridge, William F.; Hawksworth, Frank G.; Edminster, Carleton B.; Laut, John G. 1982. Ponderosa pine mortality resulting from a mountain pine beetle outbreak. Res. Paper RM-RP-235. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 7 p.

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    Keywords

    Dendroctonus ponderosae, Pinus ponderosa mortality, tree and stand characteristics

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