Papers presented at a workshop held at Penn State University, June 1993. Contents include: Dendrochronology and Dendrochemistry in Regional Ecosystem Assessments: The Forest Health Monitoring Experience; Modeling Tree-Ring Structure as Related to Temperature, Precipitation, and Day Length; Potential Dendroecological Approaches to Understanding Forest Decline; Dendrochemistry and the Soil Chemical Environment; Water-Use Efficiency as Monitored by Dendrochemistry; Dendrochemistry of Tuliptree; Tree-Ring Analysis for Monitoring Pollution by Metals; Element Analysis of Tree Rings in Ground-Water Contamination Studies.