A Salt Marsh is a Carbon Sink (IMAGE) Duke University Caption Acre for acre, a salt marsh like this one in the Netherlands’ Western Scheldt estuary, stores five times more carbon than a forest. Credit Edwin Paree Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.