Keywords: Abies; Abrupt Climate Changes and Environmental Responses; Accumulation model; Acer; ACER; Acer negundo; Acer rubrum; Acer saccharum-type; Adiantum; Alnus; Amaranthaceae; Ambrosia-type; Anacardiaceae; Apiaceae; Araliaceae; Arecaceae; Artemisia; Asteraceae; Azolla; Betula; Betulaceae; Botrychium; Brasenia schreberi; Brassicaceae; Cabomba; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Callitriche; Camel_Lake; Campanulaceae; Carpinus/Ostrya; Carya; Caryophyllaceae; Castanea; Ceanothus; Celtis; Cephalanthus; Ceratiola ericoides-type; Chamaecrista-type; Classical age-modeling approach, CLAM (Blaauw, 2010); Clethra; Combretaceae/Melastomataceae; Cornus sericea-type; Corylus; Counting, palynology; Cupressaceae; Cyperaceae; Cyrilla racemiflora; Dalea; DEPTH, sediment/rock; Dodonaea; Drosera; Dryopteris-type; Equisetum; Ericaceae; Eriocaulon; Eriogonum; Eugenia; Euphorbia; Fabaceae; Fagus; Fraxinus; Fraxinus nigra-type; Galium; Gomphrena-type; Gordonia; Hydrocotyle; Hypericum; Ilex; Isoetes; Itea; Iva frutescens-type; Iva xanthifolia-type; Juglans nigra; Lamiaceae; Lechea; Lemna; Liliaceae; Liquidambar; Liriodendron; Lycopodiaceae; Magnolia; Malvaceae; Moraceae; Myrica; Myriophyllum; Myrsine; Myrtaceae; Nuphar; Nymphaea; Nyssa; Onagraceae; Osmanthus; Osmunda cinnamomea; Parthenocissus; Phoradendron; Picea; Pinaceae; Pinus; Pinus clausa-type; Pinus subgen. Pinus; Pinus subgen. Strobus; Pistacia; Planera aquatica; Plantago; Platanus; Poaceae; Pollen indeterminata; Polygonella fimbriata-type; Polygonella polygama-type; Polygonum amphibium; Polypodiales; Polypodium-type; Populus; Potamogetonaceae; Primula; Pseudolycopodiella carolinianum; Pteridium-type; Quercus; Ranunculaceae; Rhamnaceae; Rhus; Rhynchospora; Rosaceae; Rubiaceae; Rumex; Rutaceae; Sagittaria; Salix; Sambucus; Sample ID; Sapindus; Selaginella; Serenoa; Sisyrinchium; Solanaceae; Sparganium-type; Sphagnum; Styloceras; Symplocos; Taxodium; Thalictrum; Tilia; Tsuga; Type of age model; Ulmus; Unknown; Urticaceae; Urticales; Urtica-type; Utricularia; Viburnum; Viscaceae; Vitis; Xanthium