Correction: Flepp et al. Temporal Dynamics of Root Reinforcement in European Spruce Forests. Forests 2021, 12 , 815. - Flepp, Gianluca; Robyr, Roger; Scotti, Roberto; Giadrossich, Filippo; Conedera, Marco; Vacchiano, Giorgio; Fischer, Christoph; Ammann, Peter; May, Dominik; Schwarz, Massimiliano (Forests (19994907), 2022)