Christian Messier is professor of Forest Ecology and scientific director at ISFORT at the University of Quebec, in Canada (UQO and UQAM) since 1992. His expertise is in developing innovative urban and natural forest management approaches from tree to landscape scales to increase the resilience of forests to global change. He collaborates with researchers from around the world and is implicated in many international research networks. He has supervised and graduated more than 100 M.Sc. and PhD. and supervised more than 30 post-docs. He has published more than 300 referee papers, 75 reports, 4 books and 20 book chapters and has more than 21 000 citations and a H-index of 75 (Google Scholar). He holds an industrial-NSERC research Chair on tree growth since 2010 and a Canada Research Chair on the resilience of managed forest to global change since 2017. He was recently inducted to the Royal Society of Canada.