Richard G. Kraaijvanger Soil Geography and Landscape, Wageningen University, Droevendaalsesteeg 3, 6708 PB Wageningen,
Communication, Participation & Social Ecological Learning, Van Hall Larenstein University of Applied Sciences, Larensteinselaan 26a, 6880 GB Velp,
Mekelle University, College of Dryland Agriculture,PO Box 231, Mekelle, Ethiopia Netherlands
Loes Witteveen Communication, Participation & Social Ecological Learning, Van Hall Larenstein University of Applied Sciences, Larensteinselaan 26a, 6880 GB Velp, Netherlands