Biogeographical regions (defined according to https://www.eea.europa.eu/data-and-maps/data/biogeographical-regions-europe-3) in Croatia with present ICS and NICS. ICS names are written in black colour (bold letters are used if species is native in the region). NICS names are written in red colour. Names of biogeographical regions are written in grey colour. Hydrographic network (only main waterbodies) are also included into the map and are presented in blue colour.