Identifying the occurrence of strangers introduced species in ports in the Oslo Fjord

icularly pervasion on the hull as the main introduction vector. This shall be done in a selection of ports with large international shipping traffic in prioritised order; Oslo, Drammen, Moss, Fredrikstad, Horten, Larvik and Kragerø.

The assignment is to identify the occurrence of strangers introduced species into ports in the Oslo Fjord, including discovering doorstep species for Norwegian nature and which are expected to have ballast water and part