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  • 1
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    Effects of climate change and industrialization on Lake Bolshoe Toko, eastern Siberia (2021)
    Biskaborn, Boris K. ; Narancic, Biljana ; Stoof-Leichsenring, Kathleen R. ; [et al.]
    Springer Netherlands
    Details
    Publication Date: 2023-12-19
    Description: Industrialization in the Northern Hemisphere has led to warming and pollution of natural ecosystems. We used paleolimnological methods to explore whether recent climate change and/or pollution had affected a very remote lake ecosystem, i.e. one without nearby direct human influence. We compared sediment samples that date from before and after the onset of industrialization in the mid-nineteenth century, from four short cores taken at water depths between 12.1 and 68.3 m in Lake Bolshoe Toko, eastern Siberia. We analyzed diatom assemblage changes, including diversity estimates, in all four cores and geochemical changes (mercury, nitrogen, organic carbon) from one core taken at an intermediate water depth. Chronologies for two cores were established using 210Pb and 137Cs. Sedimentation rates were 0.018 and 0.033 cm year〈sup〉−1〈/sup〉 at the shallow- and deep-water sites, respectively. We discovered an increase in light planktonic diatoms (Cyclotella) and a decrease in heavily silicified euplanktonic Aulacoseira through time at deep-water sites, related to more recent warmer air temperatures and shorter periods of lake-ice cover, which led to pronounced thermal stratification. Diatom beta diversity in shallow-water communities changed significantly because of the development of new habitats associated with macrophyte growth. Mercury concentrations increased by a factor of 1.6 since the mid-nineteenth century as a result of atmospheric fallout. Recent increases in the chrysophyte Mallomonas in all cores suggested an acidification trend. We conclude that even remote boreal lakes are susceptible to the effects of climate change and human-induced pollution.
    Description: Projekt DEAL
    Keywords: ddc:577.5 ; Diatoms ; Recent climate change ; Mercury ; Lake sediment cores ; Human impact
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 2
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    Diatom species assemblages and sediment-geochemical measurements from Lake Bolshoe Toko short cores (2021)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: This data set describes times series of diatom species counts, organic matter measurements including total carbon TC, total organic carbon TOC, nitrogen N, stable carbon isotopes d13C, and mercury Hg concentrations in four short cores (PG2133, PG2139, PG2203, PG2208 from Lake Bolshoe Toko, eastern Siberia. These short core have been dated using 210Pb and 137Cs methods covering the transition zone of the industrialization until 2013 CE. Methods are provided in the associated paper (Biskaborn et al. 2021).
    Keywords: AWI_Envi; d13C; diatoms; Geochemistry; Lake sediment core; mercury; Polar Terrestrial Environmental Systems @ AWI
    Type: Dataset
    Format: application/zip, 7 datasets
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    DATA PANGAEA
  • 3
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    (Table 3) Results of the 210Pb/137Cs dating for lake 11-CH-17
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 11-CH-17A; Age; Age, dated; Age, dated standard deviation; Age, ²¹⁰Pbₓₛ/¹³⁷Cs Lead-Caesium; AWI Arctic Land Expedition; Calculated; Chatanga2011; DEPTH, sediment/rock; GCUWI; Gravity corer, UWITEC; RU-Land_2011_Khatanga; Sedimentation rate, standard deviation; Sedimentation rate per year; Taymyr peninsula, northern Siberia
    Type: Dataset
    Format: text/tab-separated-values, 120 data points
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    DATA PANGAEA
  • 4
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    Mercury concentration of sediment core PG2203-1 (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AWI_Envi; AWI Arctic Land Expedition; d13C; DEPTH, sediment/rock; diatoms; GC; Geochemistry; Gravity corer; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; mercury; Mercury; Mercury, standard error; PG2203-1; Polar Terrestrial Environmental Systems @ AWI; RU-Land_2013_Yakutia; Yakutia2013
    Type: Dataset
    Format: text/tab-separated-values, 28 data points
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    DATA PANGAEA
  • 5
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    Stable carbon isotope ratios of sediment core PG2203-1 (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AWI_Envi; AWI Arctic Land Expedition; d13C; DEPTH, sediment/rock; diatoms; GC; Geochemistry; Gravity corer; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; Mass spectrometer Finnigan Delta-S; mercury; PG2203-1; Polar Terrestrial Environmental Systems @ AWI; RU-Land_2013_Yakutia; Water content, wet mass; Yakutia2013; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 136 data points
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    DATA PANGAEA
  • 6
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    Geochemistry of sediment core PG2203-1 (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AWI_Envi; AWI Arctic Land Expedition; Carbon, organic, total; Carbon, total; d13C; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; diatoms; Element analyser CNS; GC; Geochemistry; Gravity corer; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; mercury; Nitrogen, total; PG2203-1; Polar Terrestrial Environmental Systems @ AWI; RU-Land_2013_Yakutia; Sulfur, total; Yakutia2013
    Type: Dataset
    Format: text/tab-separated-values, 402 data points
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    DATA PANGAEA
  • 7
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    Diatom species assemblage of sediment core PG2203-1 (2021)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    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
    Type: Dataset
    Format: text/tab-separated-values, 510 data points
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    DATA PANGAEA
  • 8
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    Diatom species assemblage of sediment core PG2139-1 (2021)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    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
    Type: Dataset
    Format: text/tab-separated-values, 558 data points
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    DATA PANGAEA
  • 9
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    Diatom species assemblage of sediment core PG2133 (2021)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: Achnanthes sp.; Achnanthidium exiguum; Achnanthidium minutissimum; Amphora inariensis; Amphora ovalis; Amphora pediculus; Amphora sp.; Aulacoseira ambigua; Aulacoseira distans; Aulacoseira sp.; Aulacoseira subarctica; AWI_Envi; AWI Arctic Land Expedition; Brachysira cf. neoexilis; Brachysira vitrea; Caloneis silicula; Cavinula sp.; Chrysophyceae cysts; Craticula sp.; Cyclotella cf. atomus; Cyclotella comensis; Cyclotella cyclopuncta; Cyclotella iris; Cyclotella ocellata; Cyclotella tripartita; Cymbella aspera; Cymbella excisa; Cymbella proxima; 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 silesiacum; Encyonema sp.; Encyonopsis cesatii; Eucocconeis alpestris; Eucocconeis flexella; Eucocconeis laevis; Eunotia minor; Eunotia sp.; Event label; Fragilaria capucina; Fragilaria cf. perminuta; Fragilaria gracilis; Fragilaria leptostauron; Fragilaria radians; Fragilaria sp.; Fragilariforma virescens var. exigua; GC; Geochemistry; Gomphonema acuminatum; Gomphonema angustatum; Gravity corer; Hannaea arcus; Hippodonta costulata; Karayevia cf. ploensis; Karayevia laterostrata; Karayevia suchlandtii; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; Luticula cf. mobiliensis; Mallomonas; Mallomonas index; mercury; Navicula cryptocephala; Navicula perminuta; Navicula radiosa; Neidium dubium; Nitzschia angustata; Nitzschia dissipata; PG2133-1; PG2133-4; Pinnularia sp.; Planothidium lanceolatum; Planothidium peragallii; Platessa hustedtii; Pliocaenicus bolshetokoensis; Polar Terrestrial Environmental Systems @ AWI; Psammothidium bioretii; Psammothidium levanderi; Psammothidium subatomoides; Pseudostaurosira parasitica var. subconstricta; Reimeria sinuata; Rossithidium nodosum; Rossithidium petersenii; Rossithidium pusillum; RU-Land_2013_Yakutia; Sellaphora pupula; Skabitschewskia oestrupii; Stauroneis anceps; Staurosira venter; Tabellaria fenestrata; Tabellaria flocculosa; Total counts; Yakutia2013
    Type: Dataset
    Format: text/tab-separated-values, 492 data points
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    DATA PANGAEA
  • 10
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    Diatom species assemblage of sediment core PG2208-1 (2021)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: Achnanthes sp.; Achnanthidium minutissimum; Amphora sp.; Aulacoseira ambigua; Aulacoseira distans; Aulacoseira subarctica; AWI_Envi; AWI Arctic Land Expedition; Brachysira cf. neoexilis; Brachysira cf. zellensis; Brachysira procera; Brachysira vitrea; Caloneis baccilum; Caloneis cf. fontinalis; Cavinula cocconeiformis; Cavinula jaernefeltii; Cavinula pseudoscutiformis; Chrysophyceae cysts; Cocconeis placentula; Cyclotella cf. atomus; Cyclotella comensis; Cyclotella cyclopuncta; Cyclotella iris; Cyclotella ocellata; Cyclotella tripartita; Cymbella aspera; Cymbella excisa; Cymbella proxima; 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 marginestriata; Diploneis oblongella; Encyonema cf. reichardtii; Encyonema lunatum; Encyonema minutum; Encyonema silesiacum; Encyonema sp.; Encyonopsis cesatii; Eucocconeis alpestris; Eucocconeis flexella; Eucocconeis laevis; Eunotia incisa; Eunotia minor; Eunotia paratridentula; Eunotia praerupta; Eunotia sp.; Fragilaria capucina; Fragilaria cf. perminuta; Fragilaria gracilis; Fragilaria leptostauron; Fragilaria radians; Fragilaria sp.; GC; Geochemistry; Gliwiczia calcar; Gomphonema acuminatum; Gomphonema angustatum; Gomphonema gracile; Gomphonema sp.; Gravity corer; Hannaea arcus; Hippodonta costulata; Hippodonta linearis; Karayevia laterostrata; Karayevia suchlandtii; Lake Bolshoe Toko, Yakutia, Russia; Lake sediment core; Mallomonas; Mallomonas index; mercury; Meridion circulare; Navicula costulata var. intermedia; Navicula cryptocephala; Navicula radiosa; Navicula rhynchocephala; Navicula sp.; Neidium dubium; Neidium sp.; Nitzschia angustata; Nitzschia dissipata; Odontidium mesodon; PG2208-1; Pinnularia borealis; Pinnularia nodosa; Pinnularia sp.; Placoneis cf. placentula; Placoneis cf. pseudoanglica; Placoneis minor; Platessa holsatica; Platessa hustedtii; Platessa lutheri; Pliocaenicus bolshetokoensis; Polar Terrestrial Environmental Systems @ AWI; Psammothidium bioretii; Psammothidium chlidanos; Psammothidium helveticum; Psammothidium levanderi; Psammothidium rossii; Psammothidium subatomoides; Psammothidium ventrale; Reimeria sinuata; Rhopalodia sp.; Rossithidium nodosum; Rossithidium pusillum; RU-Land_2013_Yakutia; Sellaphora bacilloides; Sellaphora bacillum; Sellaphora cf. pseudopupula; Skabitschewskia oestrupii; Stauroneis smithii; Staurosirella pinnata; Surirella bifrons; Tabellaria fenestrata; Tabellaria flocculosa; Total counts; Yakutia2013
    Type: Dataset
    Format: text/tab-separated-values, 848 data points
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    DATA PANGAEA
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