Figure 4

Regional map of Standardised Effect Size of Area Under the Curve (SES AUC) calculated from the abundance-based scenario (left map), the trait-based scenario (middle map) and the IUCN-based scenario (right map) for fish assemblages of lakes, rivers, and estuaries. Negative SES AUC values indicate communities in which the functional diversity is more impacted by directional scenarios compared to random trajectories of species extinction. For each scenario, the boxplots indicate the general trend for the three aquatic systems. The asterisks designate the aquatic systems in which SES values were significantly lesser than zero based on unilateral Wilcoxon rank tests (P-value < 0.001). The maps were built using the libraries ‘sp’ and ‘rgeos’ available in R software (www.r-project.org) and the shapefile of the European coastline was provided by the European Environment Agency and is freely available at https://www.eea.europa.eu/data-and-maps.