Introduction

Bark beetle outbreaks have resulted in the loss of hundreds of thousands of conifers on approximately 30 million hectares of forested lands in western North America during the last decade. Many forests remain susceptible to bark beetle infestation and will continue to experience high levels of conifer mortality until suitable host trees are depleted, or natural factors cause populations to collapse. Stand conditions and drought, combined with warming temperatures, have contributed to the severity of these outbreaks, particularly in high-elevation forests.1

Conventional wisdom suggests that large scale bark beetle outbreaks alter fuel complexes resulting in an increased potential for severe fires. Conversely, fires damage trees that may predispose them to bark beetle attack.

In reality there is little specific quantified data supporting these assertions, and until recently, relationships between fire and western bark beetles in forests of North America have not been extensively studied.

The magnitude of recent outbreaks and large wildfires has resulted in a flurry of research attempting to quantify bark beetle/fire/fuel interactions. The purpose of this website is to provide end-users with a portal to access up-to-date information (published peer reviewed articles) from research that quantifies bark beetle/fire/fuel interactions and present additional tools and data related to current and previous research conducted in the Disturbance Ecology Lab at Utah State University.

1America’s Forests Heath Update 2009. USDA Forest Service, AIB-804, 16 p.