1. CNR-IGAG, Consiglio Nazionale delle Ricerche; Istituto di Geologia Ambientale e Geoingegneria; Monterotondo Scalo Rome Italy
2. Department of Sciences; Università Roma Tre; Rome Italy
3. Department of Life Sciences; University of Parma; Parma Italy
4. Royal Belgian Institute of Natural Sciences; Freshwater Biology; Brussels Belgium
5. Department of Chemistry; Physics and Environment, University of Udine; Udine Italy