We investigate how ecosystem responses to global change drivers are mediated by biotic processes. Specifically, we study how ecosystem function is influenced by mutualisms, competition, consumers, and alterations in abiotic resource availability. Projects in our lab examine a diverse suite of global change drivers, such as nutrient deposition and runoff, consumer loss, altered climatic regimes, and species invasions. We use a variety of techniques to investigate ecosystem responses to global change agents, including long-term experiments, observational data collection, and statistical data synthesis.
We work across a broad range of sites within the United States, studying species invasions in California grasslands, rangeland sustainability in Montana, Wyoming, and Kansas, grassland dynamics in Kansas, forest dynamics in Maryland, and soybean agriculture in Maryland.