New study shows rapid marsh bank sediment build up does not equate land loss resilience

Photograph: © SAF — Coastal Care


When the banks of a marsh channel accumulate sediment at a faster rate than relative sea level rise, it may seem like the marsh is resilient. However, a new study published in Geology proposes a new framework to look at sediment fluxes in marsh channels that takes into account the natural process of sediment recycling.

Understanding how sediments are transported within salt marshes is critical to predict the effect that processes such as nutrient loading, sea-level rise and sediment supply have on marsh erosion…

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Coastal marshes more resilient to sea-level rise than previously believed, Science Daily (12-19-2015)
Rising seas threaten coastal marshes worldwide. But a new Duke University study finds marshes are more resilient than previously believed…

Salt Marsh Plants Key to Reducing Coastal Erosion and Flooding, Phys.Org (10-19-2014)
The effectiveness of salt marshes – wetlands which are flooded and drained by tides – in protecting coastal areas in times of severe weather has been quantified in a study by researchers from the University of Cambridge…

NOAA Study Finds Marshes, Reefs, Beaches Can Enhance Coastal Resilience, NOAA (04-29-2015)
The resilience of U.S. coastal communities to storms, flooding, erosion and other threats can be strengthened when they are protected by natural infrastructure such as marshes, reefs, and beaches, or with hybrid approaches, such as a “living shoreline”…

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