Competition for maritime space has highlighted the need for efficient management, to avoid conflicts and create synergies between activities. And MSP plays an important role in regulating the sustainable use of marine resources and preserving habitats and species. The systematic conservation planning software Marxan was used to analyze the effect of different conservation objectives and targets on the design of a network of Marine Reserves, considering the socio-economic activities, in the Kattegat Sea. The larval dispersal and the fishing effort were used for the first time in the Baltic Sea...