The Role of Insects and Diseases in Aspen Biology

In part due to its vegetative strategy, western aspen is host to a large number of insects and diseases. However, only a few are agents of significant impact that can cause or warn of substantial changes in the condition of aspen clones. Environmental conditions, particularly drought stress, also play an integral role in the life cycle of the important insects and diseases of aspen, and regional droughts were the triggering factor in the initiation of the most notable instances of substantial aspen dieback and decline.

John Guyon has worked for Forest Health Protection, USDA Forest Service as a Forest Pathologist for the last 28 years in Ogden, Utah. His position involves technical assistance to land managers, teaching, and research.
John earned his undergraduate degree in Botany at the University of Illinois, and his MS in forest pathology at Colorado State University, where he conducted research on the impacts of environmental stress on diseases of aspen.

Created by Megan Dettenmaier

Primary Audience: Other Professionals