Research

The objective of my research is to simultaneously examine the influence of three tree species, Fraxinus quadrangulata, Quercus muehlenbergii, and Carya ovata, and an invasive shrub, Lonicera maackii, on nutrient cycling, decomposition processes, and decomposer community structure in a savanna ecosystem in central Kentucky. Litter quality, soil nitrogen dynamics, and litter decomposition rates are strongly linked, and tree species composition is thought to be a major controlling factor in nutrient cycling and decomposition processes beneath tree canopies. Savanna-like ecosystems may offer the best opportunities for testing hypotheses regarding the relationship between above-ground tree species and these processes, because individual trees and their canopies are typically non-overlapping. Understory plant species can also exert an influence on small-scale spatial patterns of nutrient cycling and decomposition processes. In cases where understory plants are invasive species, such influences can represent an alteration of function. The overarching goal of my research is to develop knowledge that will contribute substantially to the successful management of the globally-unique Bluegrass savanna-woodland landscape. Further, a better understanding of the impacts of invasive species on ecosystem processes has the potential to inform effective management strategies for control.

Teaching:

Currently the teaching assistant for Bio 325: Introductory Ecology

Previously served as teaching assistant for:

Bio 153: Principles of Biology I and Bio 151: Principles of Biology II

Selected Publications

• Pike, A.C., T.G. Mueller, B. Mijatovic, B.K. Koostra, M.M. Poulette, and R.M. Prewitt. 2006. Topographic Indices: Impact of data source. Soil Science 171(10): 800-809.