Frédéric Santamaria is lecturer in spatial planning. After studying political sciences, he obtained a PhD in geography and in spatial planning. The subject of the thesis was the medium-sized cities in France in a comparative perspective at the European scale (1998). After having worked for local authorities (1999-2001), its academic works focused on European spatial planning. He is the co-author of a lexicon of European spatial planning terms (Paris, Lavoisier, 2008). For the period 2011-2013, he is responsible (project coordinator) of the project "Capitalization and dissemination of ESPON concepts" within the framework of ESPON programme. He conducts reasearch on medium-sized cities, notably shrinking medium-sized cities in the framework of French applied research programmes.