Dataset for the analyses of newt abundance dynamics in northern Italy

Dataset and scripts used to run the analyses for newt abundance dynamics in northern Italy, along relative abundance of selected fish species at 45 locations across the study region between 1998 and 2007.<br>Newt counts and environmental characteristics were directly retreived on the field by the authors.<br>The relative abundance of selected fish species at 45 locations across the study region between 1998 and 2007 were retrieved from Puzzi C.M., Trasforini S., Bardazzi M.A., Polisciano N., Montonati S. &amp; Maggio A. (2007). Carta provinciale delle vocazioni ittiche. Provincia di Milano. Available at:https://www.regione.lombardia.it/wps/portal/istituzionale/HP/DettaglioRedazionale/servizi-e-informazioni/cittadini/agricoltura/pesca/pianificazione-ittica/pianificazione-ittica-provinciale).The 45 locations do not correspond to study sites of newt population dynamics but were used as indicators of the regional-level trend of fish species.<br>