UBC Theses and Dissertations

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UBC Theses and Dissertations

Shifting disturbances in a warming environment : the western spruce budworm and Douglas-fir beetle in British Columbia Marciniak, Amberly


Outbreaks of western spruce budworm (Choristoneura occidentalis Freeman), a native defoliator of Douglas-fir, appear to have been occurring further north in British Columbia (BC) compared to the early 1900s potentially as a result of climate change, but there is a lack of quantitative evidence to support this. I analysed the distribution of western spruce budworm infestation centers in forest health survey data for BC from 1967 to 2011 using a geographic information system (GIS) and linear regression. There was a significant (p

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