Dr. Ilse Bartsch Forschungsinstitut Senckenberg, c/o DESY Notkestr. 85 D - 22607 Hamburg, Germany Dr. Kees Davids (+) Vakgroep Aquatische Oecologie Universiteit van Amsterdam Kruislaan 320 NL - 1098 SM Amsterdam, The Netherlands Ralf Deichsel Laboratory for Soil Zoology & Ecology Grunewaldstr. 34 D - 12165 Berlin, Germany Dr. Antonio Di Sabatino Dipartimento di Scienze Ambientali Universit?? dell'Aquila Via Vetoio 20, I - 67100 L'Aquila, Italy Prof. Dr. Grzegorz Gabrys Department of Biology Institute of Biotechnology & Environmental Sciences University of Zielona G??ra Monte Cassino 21B PL - 6...