Affiliation: | (1) Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department of Limnology of Stratified Lakes, Alte Fischerhütte 2, D-16775 Stechlin-Neuglobsow, Germany;(2) Medizin- und Labortechnik Engineering GmbH Dresden, D-01445 Radebeul, Germany |