Detsch, Clemens;Tartler, Korbinian;Eisen, Anna-Katharina;Kollmann, Johannes;Fuchs, Tobias;Feiertag, Sophie;Rothe, Andreas;Menzel, Annette;Annighöfer, Peter Determinants of tree regeneration in degraded temperate floodplain forests under recent passive conservation Forest Ecology and Management 2025 598 123244