Drought and the Spruce Bark Beetle: New CU-Boulder Study Makes the Connection

Editor's note: The following article was submitted by CU-Boulder Geography Ph.D. student Sarah Hart. Periods of drought and warm temperatures, are responsible for periods of spruce beetle outbreak in Colorado, says a new University of Colorado Boulder-led study. A new study used tree-rings and documentary records of spruce beetle outbreak across much of the Rockies from the northern Front Range to Grand Mesa in southwestern Colorado over the past 300+ years to examine the climate variables associated with past outbreaks. Notably these multi-century tree-ring records of outbreaks … [Read more...]