Abstract #53

# 53
Understanding and addressing nutrient losses to the environment from livestock production.
Greg Zwicke*1, 1USDA-NRCS, Air Quality and Atmospheric Change Team, Fort Collins, CO.

Air emissions from livestock production systems have become a considerable regulatory focal point in recent years. Transport of those air emissions can further result in additional ecosystem impacts far beyond the emission point in some cases, so a better understanding of the mechanisms related to generation, emission, and transport of these air emissions is critical to mitigating their potential impacts. In much the same way that releases of nitrogen (N), phosphorus (P), and potassium (K) are related to nutrient management and subsequent water quality impacts, air releases can be generally related to nitrogen (N), carbon (C), and sulfur (S). This paper investigates the reasons for the new-found interest in air emissions of N, C, and S; how those emissions are generated, emitted, and transported; and how professionals working to assist the livestock production industry can affect the generation, emission, and transport of those emissions.

Key Words: emissions, regulatory, ecosystem

Speaker Bio
Greg Zwicke joined the Air Quality and Atmospheric Change Team in September 2005 as an air quality engineer with a primary focus on air emissions associated with animal operations. Greg grew up on a small farm and ranch operation near New Berlin, Texas, and received BS and MS degrees in agricultural engineering from Texas A&M University with a focus on environmental engineering and air quality. Prior to joining NRCS, Greg worked for an air quality consulting firm assisting industrial facilities, including those in the agriculture and forest products industries, with air quality regulatory compliance issues. Greg is a registered Professional Engineer in Virginia and a member of the American Society of Agricultural and Biological Engineers. He lives in Ft. Collins with his wife, son, daughter, and dog.