The purpose of this trip was again the qualitative and quantitative recording of the demersal fish fauna in the German Exclusive Economic Zone (EEZ) of the North Sea. In conjunction with the results of investigations of the benthic invertebrate fauna of other research institutes possible changes due to increasing industrialization (wind farms, sand and gravel extraction) are to be detected. The entire EEZ was divided into different ecological zones and covered with a fixed station network. Since the investigation began in 2004, an annual exchange between the beam trawl and bottom trawl maintained. This year the investigations were therefore carried out again with the beam trawl.
46 fish species and 69 invertebrate species were detected in the 54 carried out hauls with the beam trawl. The fish were dominated by species dab, plaice, pogge and lemon sole. The catch of invertebrates consisted mainly of starfish, swimming crabs and whelks.
Kay Panten (Thünen Institute of Sea Fisheries, Hamburg)