Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Westerscheldt estuary, period 2011-2012 Research Institute for Agriculture, Fisheries and Food
The gelatinous zooplankton samples were collected using a 1m-diameter, 1000µm-mesh CalCOFI plankton net, undulated three times through the water column (sine wave from sea surface to bottom) at a speed of 3 knots. One replicate was taken at each station. In the Belgian part of the North Sea, three stations on a coastal-intermediate-open sea transect were monthly sampled. Additonally, seasonal samples (March, June, September and December) were taken at three stations in the Westerscheldt estuary from the lower over the middle to the upper estuary. Most Ctenophora and Scyphozoa were isolated ...