My research deals mainly with human ecosystems - cities and farms - generally with a focus on water, nutrients, chloride, and other contaminants.  I work in Pasteur's quadant, blending theory and application.  Some key studies include the first detailed N balance for a city, an analysis of the impacts of the urban heat island on humans and critters, several studies of lake eutrophication, several studies on urban stormwater with an emphasis on source reduction (notably, two studies that have led to an awareness of the potential for enhanced street sweeping to reduce nutirent export from urban watersheds, a study on adaptive management for road salting, and others. 

A secondary and still emerging nterest is environmental policy.  This started in a conventioanl manner, "science to inform policy", including a major role in developing the fthe National Acidic Precipitation Program's final report to Congress prior to the 1990 Clean Air Act and leading state-wide assessment of environmental health risks in Arizona; and has evolved toward more direct thinking about topics such as operationalizing resilience in water management, adaptive management to improve water quaity (two studies), and water equity.

As I plan for retirement, I've started the research to inform a historical novel about the early Pueloans (roughly, the Basketmaker periods), using my background from current human ecosystems to frame the biopphysical aspects of these folks' lives, and letting this guide, in part, the way they must have lived.  But in the end, a fiction novel!