[1] Univ Nat Resources & Life Sci Vienna, Inst Sustainable Econ Dev, Dept Econ & Social Sci, Feistmantelstr 4, A-1180 Vienna, Austria
[2] Humboldt Univ, Geog Dept, Appl Geoinformat Sci, Unter Linden 6, D-10099 Berlin, Germany
[3] Georg August Univ Gottingen, Dept Agr Econ & Rural Dev DARE, Agr & Food Business Management Grp, Pl Gottinger Sieben 5, D-37073 Gottingen, Germany
[4] Humboldt Univ, Integrat Res Inst Transformat Human Environm Syst, Unter Linden 6, D-10099 Berlin, Germany
[5] Univ Nat Resources & Life Sci Vienna, Inst Agr & Forestry Econ, Dept Econ & Social Sci, Feistmantelstr 4, A-1180 Vienna, Austria
[6] Univ Bonn, Fac Agr, Meckenheimer Allee 174, D-53115 Bonn, Germany