Keywords: Abrupt Climate Changes and Environmental Responses; Accumulation model; ACER; Aconitum; Alnus; Amaranthaceae/Chenopodiaceae; Ambrosia-type; Androsace; Anemone-type; Apiaceae; Arctostaphylos; Artemisia; Asteraceae; Astragalus-type; Athyrium; Betula; Brassicaceae; Bryales; Bupleurum; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Callitriche; Caprifoliaceae; Caryophyllaceae; Classical age-modeling approach, CLAM (Blaauw, 2010); Counting, palynology; Cyperaceae; Cystopteris; DEPTH, sediment/rock; Diapensia; Dryas; Dryopteris; Empetrum; Epilobium; Equisetum; Ericaceae; Fabaceae; Gentiana; Hedysarum-type; Hepaticae; Hippuris vulgaris; Huperzia selago; Isoetes; Joe_Lake; Juniperus; Koenigia islandica; Lamiaceae; Ledum-type; Liliaceae; Lycopodium annotinum; Lycopodium complanatum; Myriophyllum; Nuphar; Nymphaea; Nymphaeaceae; Oxyria digyna/Rumex; Oxytropis; Papaveraceae; Pedicularis langsdorfii; Phlox; Picea; Picea/Pinus; Pinus; Plantago; Plantago canescens-type; Plantago major-type; Poaceae; Polemoniaceae; Polemonium; Pollen indeterminata; Polygonaceae; Polygonum amphibium-type; Polygonum bistortoides-type; Polypodiales; Populus; Populus balsamifera; Potamogeton; Potentilla; Pyrolaceae; Ranunculaceae; Rhododendron; Rosaceae; Rubus chamaemorus; Salix; Sample ID; Sanguisorba; Saussurea; Saxifragaceae; Saxifraga cernua-type; Saxifraga foliolosa-type; Saxifraga hieracifolia-type; Saxifraga tricuspidata-type; Selaginella sibirica; Sparganium/Typha; Sphagnum; Thalictrum; Type of age model; Unknown; Valeriana