Keywords: Achnanthes sp.; Achnanthidium minutissimum; Amphora ovalis; Amphora pediculus; Aulacoseira distans; Aulacoseira sp.; Aulacoseira subarctica; Aulacoseira valida; AWI_Envi; AWI Arctic Land Expedition; Brachysira cf. neoexilis; Brachysira vitrea; Caloneis silicula; Cavinula cocconeiformis; Cavinula jaernefeltii; Chrysophyceae cysts; Cocconeis placentula; Cosmioneis cf. pusilla; Cyclotella ocellata; Cymbella proxima; Cymbopleura cuspidata; d13C; Denticula tenuis; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.); diatoms; Diatoms, planktic/benthic ratio; Diatom valves, per unit sediment mass; Diploneis elliptica; Discostella pseudostelligera; Encyonema minutum; Encyonema silesiacum; Encyonema sp.; Encyonopsis cesatii; Eucocconeis flexella; Eunotia cf. arcus; Eunotia incisa; Eunotia minor; Eunotia serra; Eunotia sp.; F1; Fragilaria capucina; Fragilaria cf. perminuta; Fragilaria cf. tenera; Fragilaria leptostauron; Fragilariforma virescens var. exigua; Frustulia rhomboides; GC; Geochemistry; Gliwiczia calcar; Gomphonema acuminatum; Gomphonema angustatum; Gomphonema gracile; Gomphonema insigne; Gomphonema truncatum; Gravity corer; Halamphora cf. oligotraphenta; Halamphora coffeaeformis; Hippodonta costulata; Karayevia cf. oblongella; Karayevia cf. ploensis; Karayevia laterostrata; Karayevia sp.; Karayevia suchlandtii; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; Luticula cf. mobiliensis; Mallomonas; Mallomonas index; mercury; Navicula cf. gerloffii; Navicula cf. leptostrata; Navicula radiosa; Navicula rhynchocephala; Navicula sp.; Neidium iridis; Nitzschia angustata; Nitzschia cf. alpina; Nitzschia cf. fonticula; Nitzschia dissipata; Nitzschia sp.; PG2139-1; Pinnularia borealis; Planothidium lanceolatum; Planothidium sp.; Platessa hustedtii; Pliocaenicus bolshetokoensis; Polar Terrestrial Environmental Systems @ AWI; Psammothidium bioretii; Psammothidium levanderi; Psammothidium rossii; Psammothidium sp.; Pseudostaurosira brevistriata; Reimeria sinuata; Rossithidium cf. anastasiae; Rossithidium nodosum; Rossithidium petersenii; Rossithidium pusillum; RU-Land_2013_Yakutia; Stauroneis anceps; Staurosira construens; Staurosirella pinnata; Surirella bifrons; Tabellaria fenestrata; Tabellaria flocculosa; Total counts; Ulnaria delicatissima; Yakutia2013