Keywords: Achnanthes cf. didyma; Achnanthes pusilla; Achnanthes sp.; Achnanthidium minutissimum; Aulacoseira ambigua; Aulacoseira distans; Aulacoseira sp.; Aulacoseira subarctica; Aulacoseira valida; AWI_Envi; AWI Arctic Land Expedition; Brachysira vitrea; Caloneis baccilum; Cavinula cf. cocconeiformis; Cavinula cocconeiformis; Cavinula jaernefeltii; Cavinula pseudoscutiformis; Chrysophyceae cysts; Cyclotella comensis-tripartita complex; Cyclotella cyclopuncta-ocellata complex; Cyclotella iris; Cymbella proxima; Cymbella sp.; d13C; 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; Encyonema minutum; Encyonema sp.; Enzyonema silesiacum; Eucocconeis flexella; Eucocconeis laevis; Eunotia bilunaris; Eunotia minor; Eunotia paratridentula; Eunotia praerupta; Eunotia sp.; Fragilaria capucina; Fragilaria cf. delicatissima; Fragilaria leptostauron; Fragilaria pinnata; Fragilaria sp.; Frustulia rhomboides; GC; Geochemistry; Gomphonema acuminatum; Gomphonema angustatum; Gomphonema gracile; Gomphonema insigne; Gomphonema sp.; Gravity corer; Karayevia laterostrata; Karayevia suchlandtii; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; Mallomonas; Mallomonas index; mercury; Meridion circulare; Navicula cryptocephala; Navicula radiosa; Navicula rhynchocephala; Navicula sp.; Neidium ladogensis; Nitzschia angustata; Nitzschia dissipata; Nitzschia sp.; PG2203-1; Pinnularia nodosa; Pinnularia sp.; Placoneis cf. minor; Placoneis cf. pseudoanglica; Placoneis minor; Placoneis sp.; Planothidium oestrupii; Planothidium peragallii; Pliocaenicus bolshetokoensis; Polar Terrestrial Environmental Systems @ AWI; Psammothidium altaicum; Psammothidium bioretii; Psammothidium helveticum; Psammothidium levanderi; Psammothidium sp.; Psammothidium subatomoides; Psammothidium ventrale; Pseudostaurosira brevistriata; RU-Land_2013_Yakutia; Sellaphora bacillum; Sellaphora pupula; Staurosira construens; Tabellaria fenestrata; Tabellaria flocculosa; Tetracyclus sp.; Total counts; Yakutia2013