Wood Decay Fungi of Large, Mature Trees

A good knowledge of wood decay fungi associated with urban trees can give the working arborist clues to the amount and pattern of decay within the tree.  This is an important aspect of hazard tree analysis and effective decision-making for tree treatment and management in urban settings.  Large, mature trees, which have endured the onslaught of disturbance for centuries, are frequently more prone to decay than rapidly growing, younger trees so knowledgeable decay diagnosis and analysis are especially vital in their assessments.  The identification of decay fungi can be difficult, but many can be easily discerned with the use of a hand lens.  This presentation will focus on some of the major decay fungi associated with mature trees and provide a useful pathway to follow for identification.  An assessment of current books and on-line references will be available.

Jessie GlaeserDr. Jessie A. Glaeser received her PhD in plant pathology from Virginia Tech in 1985 under the guidance of Dr. R. J. Stipes in the field of urban tree pathology.  She worked as a post-doctoral researcher at Fort Detrick in Frederick, MD on the taxonomy of exotic fungal pathogens, and then joined the U.S. Forest Service in 1985.  She is the team leader of the Center for Forest Mycology Research at the Forest Products Laboratory in Madison, WI.  Her research interests include hazard trees, the ecology and taxonomy of wood decay fungi, and invasive fungal species.

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