Giovanni Leonelli,^* Manuela Pelflni,^** Umberto Morra di Cella,^*** Valentina Garavaglia<sup>****


*</sup>Giovanni Leonelli () is a postdoc researcher at the Earth Sciences Department, University of Milan. His main interests are in dendroclimatology and the impact of climate change on high-altitude environments. He works on the reconstructions of past biogeographical and geomorphological dynamics in the Alpine environments. Address: Department of Earth Sciences, University of Milan, Via Mangiagalli 34, 20133 Milan, Italy, e-mail: giovanni.leonelli@unimi.it
^**Manuela Pelflni is professor of Geomorphology and Physical Geography at the University of Milan. Her research interests include glacial and periglacial geomorphology in the European Alps and the ongoing dynamics, also focusing on the physical and biological interactions. She also manages the Laboratory of Dendrogeomorphology of the University of Milan. Address: Department of Earth Sciences, University of Milan, Via Mangiagalli 34, 20133 Milan, Italy. e-mail: manuela.pelfini@unimi.it
^***Umberto Morra di Celia is chief of the operative unit Climate Change, at the Environmental Protection Agency of the Valle d'Aosta region. He is responsible for the monitoring of climate change impacts on high-altitude environments, especially focusing on glacial and periglacial environments and on the responses of natural systems. Address: ARPA Valle d'Aosta, Loc. Grande Charrière 44, 11020 Saint Christophe, Italy, e-mail: u.morradicella@arpa.vda.it
^****Valentina Garavaglia has recently received her PhD on dendrogeomorphology, focusing her research on the use of tree rings for detecting and evaluating slope instabilities and the use of Geographic Information Systems for managing dendrochronological data. She is currently a laboratory technician at the University of Milano. Address: Department of Earth Sciences, University of Milan, Via Mangiagalli 34, 20133 Milan, Italy. e-mail: valentina.garavaglia@unimi.it