Typical example for technical incoherencies in GIS: digitizing problems on common borderlines. For this map we used Natura 2000 dataset (source: http://www.eea.europa.eu/data-and-maps/data/natura-4) and NUTS database (source: http://epp.eurostat.ec.europa.eu/portal/page/portal/gisco_Geographical_information_maps/popups/references/administrative_units_statistical_units_1).

  Part of: Henle K, Potts S, Kunin W, Matsinos Y, Simila J, Pantis J, Grobelnik V, Penev L, Settele J (Eds) (2014) Scaling in Ecology and Biodiversity Conservation. Advanced Books: e1169. https://doi.org/10.3897/ab.e1169