Correction

In the publication of this article [1], there is an error in the Figures 4, 5 and 6 which are missing the map design and data source of the copyright owners.

Should instead read:

Figure 4:

Map design: Kurt Weninger.

Data source: basemap.at, ©OpenStreetMap & Contrib.

Figure 5:

Map design: Kurt Weninger.

Data source: basemap.at, ©OpenStreetMap & Contrib., European Environment Agency.

Figure 6:

Map design: Kurt Weninger.

Data source: basemap.at, ©OpenStreetMap & Contrib., © Land Vorarlberg.

This has now been included in this erratum.