CAREER: Integrating water age and nitrate isotope biogeochemistry to advance knowledge and modeling of watershed nitrogen reactive transport

Nitrogen is an essential nutrient for plant growth. Each year, millions of tons of fertilizer nitrogen are applied across the U.S. Midwest to support crop production. However, less than half of this applied nitrogen is utilized by crops within the same year, and it remains unknown where the excess nitrogen is stored or how it is lost from…