Sediment trapping—A subaquatic in situ experiment1

A sediment trapping experiment was carried out 1.5 m above a soft bottom, at a water depth of 10 m, near the island of Askö in the archipelago of Trosa, Sweden, to investigate particulate settling in interceptor traps in an environment with moderate turbulence and currents. To ensure consistent trapping in cylinders with an interior diameter of 21–57 mm requires a height:diameter ratio ≥3. Variable trapping effects occurred in cylinders with i.d. <103 mm and a constant height:diameter ratio (8). Cylinders with small diameters strongly concentrated organic matter.