1. Tree ring responses to climate and disturbance across a topographic gradient in the Ridge and Valley of Central Pennsylvania Open Access Author: Bouma, Christopher Lee Title: Tree ring responses to climate and disturbance across a topographic gradient in the Ridge and Valley of Central Pennsylvania Graduate Program: Forest Resources Keywords: dendrochronologyclimategradientaspecttemperature File: Download ChristopherBoumaThesisFinalforGraduateSchool.pdf Committee Members: Marc David Abrams, Thesis Advisor/Co-Advisor