Table 4 Data sources.

Geomorphology

Map data (DTM) and lithological map (0.5 km grid cell)

Geoportal of Calabria Region (http://geoportale.regione.calabria.it/opendata)

Coastal slope

Regional bathymetry and map data (DTM) (Grid extending 5 km landward and seaward of the shoreline—elevation at 1 m vertical resolution for 8 m grid cells)

Geoportal of Calabria Region (http://geoportale.regione.calabria.it/opendata)

Shoreline erosion/accretion rates

Regional orthophotos (1954 -2018)

Geoportal of Calabria Region (http://geoportale.regione.calabria.it/opendata)

Emerged beach width

Regional orthophotos

Geoportal of Calabria Region (http://geoportale.regione.calabria.it/opendata)

Dune

Dune width: regional orthophotos; Type of dune: visual inspection and previously studies carried out in the area

Geoportal of Calabria Region (http://geoportale.regione.calabria.it/opendata) Uzunov et al. (2013)⁷⁶; Uzunov et al. (2009)⁷⁷

River discharge

River discharge data

Authority Basin of Calabria region (http://old.regione.calabria.it/abr/index.php?option=com_content&task=view&id=364&Itemid=113)

Relative sea-level change

Trends in Sea level rise

Mediterranean by National Oceanic and Atmospheric Administration, NOAA (https://www.star.nesdis.noaa.gov/socd/lsa/SeaLevelRise/)

Mean significant wave height

Wave information (Crotone wave buoy)

National wave metric network (ISPRA—Institute for Environmental Protection and Research)

Mean tide range

Tide range information

European Environmental Agency EEA data-base (https://www.star.nesdis.noaa.gov/socd/lsa/SeaLevelRise/);

Vegetation behind the back-beach

Regional orthophoto

Geoportal of Calabria Region (http://geoportale.regione.calabria.it/opendata)

Coverage of Posidonia oceanica

Regional orthophoto and previously study

Geoportal of Calabria region (http://geoportale.regione.calabria.it/opendata); EEA(https://nature-art17.eionet.europa.eu/article17/reports2012/habitat/summary/?period=5&group=Coastal+habitats&subject=1120&region=MMED)