1. Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum University of Bologna, Ravenna, Italy
2. Environmental Protection Agency of Tuscany Region (ARPAT), Livorno, Italy
3. Department of Biology, University of Malta, Msida, Malta
4. Institute for Marine Biological Resources and Biotechnologies (IRBIM), National Research Council – (CNR), Mazara del Vallo, Italy