Habitat mapping in coastal lagoons: first results on a tidal channel and future prospects

The seafloor of Venice Lagoon channels is a relatively unexplored environment. A first attempt of benthic habitat mapping is presented, based on high resolution acoustic surveys carried out in 2013. Specific protocols were developed and tested on a study site (Scanello channel). Main seafloor features were identified on bathymetries and backscatter data. Ground-truthing included grab samples and photographic surveys. A number of benthic habitats were recognised, including biogenic habitats characterised by high biomass and diversity. Preliminary results and main prospects are presented.