Significance of Streambank Legacy Sediments as Nutrient Sources and Their Implications for Aquatic Nutrient Cycling

800 532 Stroud Water Research Center

The potential for streambank legacy sediments as nutrient sources for aquatic ecosystems has been understudied and is a critical gap in our knowledge. We hypothesize that erosion of streambank legacy sediments, especially from mid-Atlantic and northeastern watersheds, will result in substantial inputs of nitrogen and phosphorus to receiving waters. Contribution of legacy sediments/nutrients to sediment loads suspended by storm events will be determined using mixing models based on elemental, isotopic, biomarker, and microbial fingerprints and next-generation sequencing techniques.

Funded by: U.S. Department of Agriculture

Principal Investigator: Jinjun Kan

Collaborator: Shreeram Inamdar (University of Delaware)

Project Years: 2017, 2018, 2019