"The world lost 1,453 square kilometers (561 square miles) of salt marsh between 2000 and 2019, an area twice the size of Singapore, according to a new study based on satellite imagery.
In addition to providing wildlife habitat and numerous ecosystem services, salt marshes store a great deal of carbon.
Salt marsh loss resulted in 16.3 teragrams, or 16.3 million metric tons, of carbon emissions per year, according to the study. That’s the rough equivalent of the output of around 3.5 million cars.
Climate change is one of the greatest threats to marshes. Other contributors to their global decline include conversion to aquaculture, coastal erosion, eutrophication, drainage, mangrove encroachment and invasive species."
Sean Mowbray reports for Mongabay December 19, 2022.