Acacia caven cover on the pasture quality and microclimate in a silvopastoral system of central Chile Egileak: Lucero Ignamarca, Alejandro, Muñoz Sáez, Fernando, Cancino Cancino, Jorge, Sotomayor Garretón, Alvaro, Dube, Francis, Sáez Carrillo, Katia, Villaroel Muñoz, Arnoldo, Navarrete Torres, Mauricio