Pioneering research by Amy Rosemond, professor in the Odum School of Ecology, has improved ecological understanding of how freshwater ecosystems function while identifying specific ways for policymakers to improve stream health. She studies aquatic food webs and their biogeochemical dynamics, particularly in response to stressors, in innovative and ground-breaking ways. She has expanded the understanding of excess nutrient enrichment in real-world streams based on ambitious, multiyear experiments in the field. Her team has also measured the effects of stressors such as rising water temperature and changes in stream flow to learn how these factors affect the underlying biology of streams. Her large-scale field experiments on multiple stream ecosystems have encompassed entire food webs, revealing unexpected interactions and linkages across trophic levels, from nutrients and algae to insects to fish and salamanders. Her work exemplifies how innovative ecosystem science can inform the policy and management of freshwater resources.