A: Distribution map of the salty and muddy areas of Tuscany Sites detected: 1 - Cornacchiaia, Galanchio, Bozzone Reserve, San Rossore; 2 - Vada; 3 - Venturina (Orti-Bottagone marsh); 4 - Scarlino marsh; 5 - Pian d’Alma marsh; 6 - Elba Island (Saline San Giovanni); 7 - Pianosa Island; 8 - Castiglione della Pescaia (Diaccia Botrona marsh); 9 - Trappola-Bocca d’Ombrone-Porto Vecchio; 10 - Orbetello lagoon; 11 - Giannutri Island. B: Number of relevés for each site considered. Data concerning the localities of the sampled sites are reported in Suppl. Material 2.