1 Faculty of Forestry and Environment, University for Sustainable Development, Schicklerstraße 5, 16225 Eberswalde, Brandenburg, Germany. Electronic address: Georg.Miribung@hnee.de.
2 Law Department, University of Bari Aldo Moro, Piazza Umberto I, 70121 Bari, Italy.
3 Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen, Universitätsplatz 5, 39100 Bozen-Bolzano, Italy.
4 Philosophical-Theological College Brixen, Seminarplatz 4, 39042 Brixen-Bressanone, Italy.