1 Catalan Institute for Water Research (ICRA), C. Emili Grahit 101, 17003 Girona, Spain; Universitat de Girona, Girona, Spain.
2 Catalan Institute for Water Research (ICRA), C. Emili Grahit 101, 17003 Girona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain.
3 Catalan Institute for Water Research (ICRA), C. Emili Grahit 101, 17003 Girona, Spain; Universitat de Girona, Girona, Spain. Electronic address: gbuttiglieri@icra.cat.