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 Dans le cadre du meeting annuel de l'AAG (Association of American Geographers) qui se tiendra cette année à Chicago (Avril 2015), deux sessions organisées par Marylise COTTET et Bertrand MORANDI (Univ. Lyon, UMR 5600 CNRS) proposent de discuter l'apport des sciences sociales pour la restauration écologique des rivières. Vous trouverez ci-dessous le programme de ces deux sessions durant lesquelles deux communications seront proposées par des membres de l'équipe de Reppaval.Session : How can social sciences contribute to river restoration ?Since the 1990s, under legal requirements and environmental awareness, restoration has increasingly become an issue for river management. Operational feedbacks and scientific results underline that river restoration raises many social questions (Palmer and Bernhardt, 2006):- The definition of river quality as well as reference status for restoration projects is highly variable and depends on human perceptions and knowledge (Nilsson et al., 2007 ; Dufour and Piégay, 2009 ; Barraud and Germaine, 2013),- Project design involves participation of various stakeholders. Each of them have their own river uses and values (aesthetical, economical, ecological…) and give priority to different issues (biodiversity preservation, recreational uses, energy production…) (Tunstall et al. 2000 ; Junker et al., 2007 ; Chiari et al., 2009),- There is a need to develop social criteria to evaluate river restoration projects. It is also important to link social and ecological evaluations (Morandi et al., 2014 ; Cottet et al., 2012).This session aims to present and discuss research results in this field in order to raise common current questioning and perspectives for social researches. The objective is also to confront methodologies and national experiences.Simon DUFOUR, Régis BARRAUD, Ivan BERNEZ, Gabrielle BOULEAU, Jean Michel CADOR, Sébastien CAILLAULT, Daniel DELAHAYE, Marie-Anne GERMAINE, Laurent LESPEZ, Maxime MARIE, Dominique OMBREDANE, Fabrice PARAIS, Anne-Julia ROLLET, Vincent VIEL -  Toward a political ecology of river restoration in FrancePaul H. GOBSTER, Cristy WATKINS, Lynne M. WESTPHAL, Joanne VINING, Alaka Wali, Madeleine TUDOR - Factors underlying public support for ecological restoration practices in metropolitan natural areas managementKerstin BÖCK, Michaela POPPE, Sigrid SCHEIKL, Andreas MUHAR, Susanne MUHAR - Ecosystem services in river landscapes: Perspectives of different stakeholder groupsLaurent LESPEZ, Régis BARRAUD, Marie-Anne GERMAINE - Small Dam Removal in the North-West France: fifteen years of controversy. Analysis of Social and political issues.Marylise COTTET, Lise VAUDOR, Marie AUGENDRE - Does every stakeholder perceive and value identically rivers? Contribution of an eye-tracking experiment for a river restoration project (Yzeron River, France)Bertrand MORANDI, Hervé PIEGAY - Restoration, Rehabilitation or Renaturation: Scientific or Cultural Concepts?Catherine CARRE, Ronan QUILLIEN, Achim ERNEST - Social outcome for small urban rivers restoration: users' satisfaction vs. urban qualities? Cross-viewpoints of researchers and technicians in Paris areaAude HAMED - Urban river restoration evaluation - a hybrid between ecological and social monitoringMarie-Anne GERMAINE, Laurent LESPEZ - The Dam Removal in the Sélune River (Lower-Normandy, France) - The contribution of the actor network theory to reveal the complexity of social aspects of restoration projectsCes deux sessions auront lieu le jeudi 23 Avril 2015 (13h20 - ; Skyway 284, Hyatt, East Tower, Blue Level).