The wetlands of Maremma (Tuscany, Italy): Resurveying studies and investigations on new biotopes.

In the Mediterranean, wet environments are habitats strongly dependent on meteoric contributions and often ephemeral in nature. The wetlands of southern Maremma (Tuscany, Italy) have peculiar aspects and characteristics that are quite different from each other. Previous studies, dating back more than 15 years ago, had confirmed the presence of species that have now almost completely disappeared in Tuscany, such as Damasonium alisma Mill., Elatine alsinastrum L. and some taxa of Isoetes spp. With the collaboration of the Maremma Natural History Museum, a floristic-vegetation study campaign has begun, aiming on the one hand at comparative vegetation resurveying studies in previously investigated areas and on the other hand to investigate new biotopes, often located in private areas and therefore difficult to access. So far, coenoses belonging to the order Ranunculion aquatilis and Potamion pectinati have been preliminarily identified, as well as several communities of the class Phragmito-Magnocaricetea and others hygrophilous coenoses of humid meadows.