The map highlight the potential intensity of pressure related to marinas on marine ecosystems. The dispersal of yachting port-derived pollution was modeled as a diffusive plume up to 20 km based on the data on mooring capacity of each yachting port. The spatial proximity of yachting ports increases the overall pressures. The influence was modeled as a buffer with and exponential decay based on self calculations using mooring capacity of each yachting port. Calculations were made following the same methodology developed for ESaTDOR Project (ESPON, 2013). The extension area is based on HELCOM, 2012 and it is the theoretical maximum expansion distance for pressures generated by recreational shipping.
The map shows the distribution of main passenger and transport ports in the Mediterranean Sea. The dispersal of port-derived pollution was modeled as a diffusive plume based on their activity level using Eurostat data on transport of goods (thousand tonnes) and passengers (thousand passengers). Calculations were made following the same methodology developed for ESaTDOR Project (ESPON, 2013).