Human disruption of biogeochemical cycles, particularly those caused by land-use change, can severely alter the integrity of terrestrial ecosystems and their ability to provide critical ecosystem services to society. Disruption of the global carbon cycle and the rise in atmospheric carbon dioxide is disrupting the climate system. Enhanced inputs of nitrogen to terrestrial ecosystems can have a severe impact on the health of both aquatic and terrestrial ecosystems, while also contributing to global climate disruption.
My students and I are working to improve our understanding of critical processes in these biogeochemical cycles, how they are being altered by human activity, and how terrestrial ecosystems might be more effectively managed to help mitigate human impacts while still providing critical ecosystem services.
Our research varies from site-specific studies to large scale investigations facilitated by remote sensing, geographic information systems, and simulation models. We try to make our research results relevant and available to the general public and to policy-makers, with the hope that we can provide key scientific information needed for the development of sound environmental policy.