Strong heterogeneity in laterally exchanged particulate organic matter across tidal marshes in a large river delta.

Summary: Have you ever wondered how wetlands help control carbon in our oceans? Scientists looked at the Yangtze River Delta to see how bits of organic matter move between marshes and the sea. They found that the amount of carbon moving around changes a lot depending on the tides and the season. In the fall, salty (brackish) marshes release nine times more carbon than freshwater marshes! This helps us understand how coastal areas store and move carbon, which is super important for our planet's health.