Elowyn Yager, University of Idaho, Department of Civil Engineering, Center for Ecohydraulics Research, Moscow, ID, United States, Roland Kaitna, Boku University Vienna, Vienna, Austria, Angel Monsalve Sepulveda, Universidad de la Frontera, Departamento de Ingenieria de Obras Civiles, Temuco, Araucanía, Chile, Solange Leblois, EPFL, Lausanne, Switzerland and Moritz Gundlach, BOKU, Vienna, Austria