SUCCESSION + VEGETATION DYNAMICS (PLANT SOCIOLOGY); SAURE NADELWÄLDER (PFLANZENGESELLSCHAFTEN); SWISS PREALPS + SWISS ALPINE FOOTHILLS; ACID CONIFEROUS FORESTS (PLANT SOCIETIES); SUKZESSION + VEGETATIONSDYNAMIK (PFLANZENSOZIOLOGIE); SCHWEIZER VORALPEN; NATURAL FOREST REGENERATION (SILVICULTURE); FAGUS (BOTANIK); PICEA (BOTANY); ABIES (BOTANY); PICEA (BOTANIK); OAK FORESTS + BRAOAD-LEAVED FORESTS + BEECH FORESTS (PLANT SOCIETIES); WALDRESERVATE (NATURSCHUTZ); EICHENWÄLDER + EDELLAUBWÄLDER + BUCHENWÄLDER (PFLANZENGESELLSCHAFTEN); FOREST RESERVES (NATURE CONSERVATION); FAGUS (BOTANY); ABIES (BOTANIK); NATÜRLICHE WALDVERJÜNGUNG (WALDBAU)