The Cerulean Warbler is a small migratory that is currently considered a species of special concern. Cerulean Warbler response to two types of silvicultural treatments in southern Indiana was assessed by comparing relative abundance and territory data collected during the two years prior to tree harvest to data collected one year immediately following the harvest. ArcGIS was then used to identify spatial attributes of territories that appeared to be important to the species. Lastly, a method of sampling canopy openings by using a Global Positioning System (GPS) unit was introduced. The results suggest that Cerulean Warblers were not negatively affected by the harvest and that moderate prescribed silviculture treatments that create small canopy openings can benefit the species. / Immediate Cerulean warbler response to silviculture in southern Indiana -- Effects of silviculture on spatial characteristics of Cerulean warbler territories -- A method of sampling canopy openings associated with Cerulean warbler territories. / Department of Biology

Invasive plants, animals, insects, and pathogens are a significant problem for land managers and conservationists as they can cause irreparable damage to local ecosystems. The emerald ash borer (EAB), an invasive beetle from China, was discovered in the U.S. in 2002, and has decimated ash populations throughout Michigan. It continues to move through Midwestern and some eastern states, usually killing a tree within 2-4 years of infection. Using a Global Positioning System (GPS) and Geographic Information System (GIS), all trees ≥ 45 cm and all ash ≥ 30 cm in diameter were measured and mapped within a 160 acre old-growth deciduous forest in northern Indiana. EAB was detected in 14 trees throughout the forest. A canopy map was generated, estimating 6.6 percent canopy loss due to EAB. Because of this research, the entire spread of EAB within this forest can now be documented and mapped. The methodological framework used in this research can assist land managers and property owners monitor their land by enabling them to: track changes in tree health more accurately; assess damage by creating forest inventory and canopy maps; and model potential damage over time. / Department of Natural Resources and Environmental Management