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Long‐term history and synchrony of mountain pine beetle outbreaks in lodgepole pine forests

A subcontinental‐scale outbreak of mountain pine beetle (MPB; Dendroctonus ponderosae) has affected millions of hectares of forest in the western USA and Canada over the past 15 years. Little research has examined the long‐term and broad‐scale history of MPB outbreaks, which is necessary to provide a baseline for comparing current and future outbreak extents. We examine the long‐term history of MPB outbreaks in western Colorado, and analyse the synchrony of previous outbreaks across western North America.