Matt Colgan is a Ph.D. student at Stanford University. He is also a research staff member in the Asner Lab at the Department of Global Ecology. His research interests focus on the analysis of remote sensing data for tropical forests and savannas, and modeling of feedback loops between carbon and nutrient cycles in these ecosystems. Future thesis work will include studying the effects that large mammals (elephants, wildebeests, etc.) have on the composition of vegetation in the savannas and woodlands. Another goal of this work is to provide estimates of savanna carbon stocks and fluxes at regional scales using the Carnegie Airborne Observatory (CAO).