The primary focus of my work is to improve our understanding of hydrologic and terrestrial processes that control the biogeochemical cycles and fluxes with the ultimate goal of developing policies and management practices that protect water, soil, and other natural resources. Water is typically my central focus because it is arguably the most critical and at-risk resource to humans and entire ecosystems. My research addresses both native and managed systems, considers processes at plot- to large river basin-scales, and is relatively evenly divided among field study/monitoring, modeling, and application of results to real world problems. Three broad and somewhat overlapping research themes around which I focus are: 1. Impact of land use and climate (change) on water quality and quality, 2. Impact of watershed management practices on water quality, and 3. Bridging basic research and modeling to management and application.