[1] Univ Murcia, Dept Appl Econ, Campus Espinardo, Murcia 30100, Spain
[2] Univ Politecn Cartagena, Dept Business Econ, Paseo Alfonso XIII,48, Cartagena 30203, Spain
[3] Univ Politecn Valencia, Dept Econ & Social Sci, Camino Vera,S-N Edificio 7J, Valencia 46022, Spain
[4] Univ Tuscia, Dept Innovat Biol Agrofood & Forest Syst DIBAF, Via San Camillo del Lellis, I-01100 Viterbo, Italy
[5] Spanish Natl Res Council CEBAS CSIC, Campus Espinardo, Murcia 30100, Spain
[6] Univ Politecn Cartagena, Sustainable Use Management & Reclamat Soil & Water, Dept Agr Engn, Paseo Alfonso XIII 48, Cartagena 30203, Spain
[7] CSIC, POB 13034, Zaragoza 50080, Spain
[8] Res Ctr Agr & Environm CREA AA, Council Agr Res & Econ, Via Navicella 2-4, I-00184 Rome, Italy
[9] Wageningen Univ, Dept Environm Sci, Droevendaalsesteeg 3, NL-6708 PB Wageningen, Netherlands
[10] Ekoboerderij Lingehof, Hemmensestr 17, NL-6668 LB Randwijk, Netherlands
[11] Winery Dr Frey, Alter Weg 9, D-54441 Kanzem, Germany
[12] Univ Pecs, Inst Geog & Earth Sci, Fac Sci, Ifjusag u. 6, H-7624 Pecs, Hungary
[13] Nat Resources Inst Finland, PL 2, Helsinki 00791, Finland