1. Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3. EYATH SA, Water Supply Division/Drinking Water Treatment Facility, Nea Ionia, 57008 Thessaloniki, Greece
4. Environmental Pollution Control Laboratory, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece