Lead Investigator: Dr. Kenny Raposa, Research Coordinator, Narragansett Bay National Estuarine Reserve
WBNERR Project Contact: Dr. Megan Tyrrell
8 Reserves Included in Project: Great Bay NH, Waquoit Bay MA, Narragansett Bay RI, Chesapeake Bay MD, Chesapeake Bay VA, North Carolina, Grand Bay MS, Elkhorn Slough CA
Tidal marshes provide key ecosystem services, but are threatened by sea level rise. Narragansett Bay and Elkhorn Slough NERRs recently led a project to assess marsh resilience to sea level rise across 16 NERR sites, resulting in a scientific publication, user-friendly summary, and DIY tool. Currently, eight NERR sites across the East, Gulf and West coasts are actively testing strategies to examine the effectiveness of thin-layer sediment placement as a climate adaptation strategy.
Novel aspects of our project include the broad geographic scale, the examination of effectiveness at different marsh elevations, standardized monitoring, and the incorporation of biochar as a soil amendment to enhance carbon sequestration. Beneficial use of dredged sediment to enhance coastal resilience is a concept that resonates in many coastal states, and we have interviewed end-users from eight states interested in funding, permitting, implementation or monitoring of thin-layer sediment projects.