1. Robert Bosmans, Terrestrial Ecology Unit, Ledeganckstraat 35, 9000 Gent, Belgium; E-mail: rop_bosmans@telenet.be
2. Paolo Pantini, Museo civico di Scienze Naturali “E. Caffi”. Piazza Cittadella, 10, 24129 Bergamo, Italy; E-mail: ppantini@comune.bg.it
3. Pamela Loverre, Rocco Addante, Department of Soil, Plant and Food Sciences, University of Bari “Aldo Moro”, Via G. Amendola 165/A, 70126 Bari, Italy; E-mail: pamela.loverre@hotmail.it; rocco.addante@uniba.it