Risk analysis on the import of seed mussels from the west coast of Sweden into the Wadden Sea

This report is the result of a risk analysis on the introduction of exotic non-indigenous species with the import of rope culture mussels from Sweden into the Wadden Sea. Based on available literature data and expert judgement, the target species are identified and the risks of these species are assessed semi-quantatively. Based on the risk analysis it is concluded that the risk of introducing exotic non-indigenous species into the Dutch part of the Wadden Sea with the import of mussels from Sweden is low, but not totally absent.