BUILDING A REGIONAL TREE-RING MASTER CHRONOLOGY FOR NORTHCENTRAL PENNSYLVANIA
This research addresses the lack of an existing chronology in north-central Pennsylvania, and aims to collect, analyze, and cross-date tree-ring samples within Tioga County to produce a master database for various research applications including climate change, ecological studies, geomorphic applications, and measuring pollution. Research agreements with the Department of Conservation and Natural Resources (DCNR) and State Game Commission (SGC) provide 184,207 acres for sampling. Eastern Hemlocks (Tsuga canadensis) were chosen as they are native to this region of Pennsylvania and they have the highest potential for matching rings, with a cross-dating index (CDI) rating of two. Likewise, the spread of the invasive wooly adelgid and the decline of the eastern hemlock throughout Appalachia provides further rationale. All samples are collected and analyzed according to standard dendrochronological field methods to ensure reliability of samples.