Nutrient cycling hotspots in suburban mesic watersheds: Stormwater detention basins, grassed road ditches, and lawns

Lauren McPhillips, Arizona State University

Abstract for Weekly Colloquium on Thursday, September 22, 2016

As urbanization has increased across the United States and the world, we have manipulated the way that water and nutrients move around the landscape. My research has focused on the biogeochemical hotspots in suburban mesic watersheds that have resulted from this manipulation, specifically focusing on hotspots of denitrification, soil greenhouse gas emissions, and nutrient leaching. I'll discuss field investigations of stormwater detention basins, grassed road ditches, and lawns in central New York State which elucidate the role that hydrologic conditions and nutrient availability play in controlling these nutrient cycling processes. I'll also highlight how this knowledge on drivers of these processes can allow us to better manage developed landscapes so that we can promote beneficial water quality services like denitrification and minimize ecosystem disservices like greenhouse gas emissions and nutrient leaching.