In order to monitor long-term variability in or eventual change of the planktonic community a semi-quantitative analysis of gelatinous zooplankton has been ongoing since 2009 in the Sylt-Rømø Bight, a region of high ecological importance within the Marine Protected Area National Park Schleswig Holsteinisches Wattenmeer. The sampling is tightly linked to the LTER Sylt Roads time series thus enabling the coupling of species occurrence to the respective hydrochemical and physical conditions in the water column.

Individuals per three hauls. If less than three hauls were conducted it was noted down in the comment column.