DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx
Millennial-scale climate change history in eastern Siberia and relationships between diatom diversity, paleoclimate, and sediment-geochemical lake system trajectories are still poorly understood. This study investigates multi-proxy time series reaching back to the Late Pleistocene derived from radio...
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Online Access: | https://doi.org/10.3389/feart.2021.737353.s002 |
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ftsmithonian:oai:figshare.com:article/15154170 2023-05-15T18:45:01+02:00 DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx Boris K. Biskaborn (8714472) Larisa Nazarova (8564058) Tim Kröger (11264091) Lyudmila A. Pestryakova (11264094) Liudmila Syrykh (8564085) Gregor Pfalz (8569770) Ulrike Herzschuh (5496668) Bernhard Diekmann (10698897) 2021-08-12T04:25:59Z https://doi.org/10.3389/feart.2021.737353.s002 unknown https://figshare.com/articles/dataset/DataSheet2_Late_Quaternary_Climate_Reconstruction_and_Lead-Lag_Relationships_of_Biotic_and_Sediment-Geochemical_Indicators_at_Lake_Bolshoe_Toko_Siberia_xlsx/15154170 doi:10.3389/feart.2021.737353.s002 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change organic carbon paleolimnology Cyclotella Aulacoseira holocene thermal maximum diatoms pollen chironomids Dataset 2021 ftsmithonian https://doi.org/10.3389/feart.2021.737353.s002 2021-12-20T04:31:55Z Millennial-scale climate change history in eastern Siberia and relationships between diatom diversity, paleoclimate, and sediment-geochemical lake system trajectories are still poorly understood. This study investigates multi-proxy time series reaching back to the Late Pleistocene derived from radiocarbon dated Lake Bolshoe Toko sediment cores, southeastern Yakutia, Russia. We analyzed diatoms, elements (XRF), minerals (XRD), grain-size, organic carbon, and included chironomid analyses and published pollen-data for quantitative paleoclimate reconstruction. Changes in diatom species abundances reveal repeated episodes of thermal stratification indicated by shifts from euplanktonic Aulacoseira to Cyclotella species. Chironomid and pollen-inferred temperature reconstruction reveal that the main shift between these diatom species is related to the onset of Holocene Thermal Maximum (HTM) at 7.1 cal ka BP. Comparison to other paleoclimate records along a north-south transect through Yakutia shows that the HTM was delayed as far south as the Stanovoy mountains. Relationships between sediment-geochemistry, paleoclimate variability and diatom species richness (alpha diversity) was tested in a moving temporal offset approach to detect lead-lag relationships. Sediment-geochemical data, mainly uniform during the Holocene, revealed strongest positive or negative correlations ahead of species richness changes. Mean July air temperature (T July ) reconstructions correlate with both Hill numbers and relative assemblage changes indicated by sample scores of multidimensional scaling analysis (MDS) over the entire time series. We found that sediment organic carbon revealed distinct positive correlations, i.e., centennial-scale delay to increases in diatom effective richness (Hill numbers N0 and N2). We conclude that a lag of deposited organic carbon concentrations behind changes in diatom alpha diversity reveals that species richness can augment the production and thus sequestration of organic matter in comparable lake systems. Dataset Yakutia Siberia Unknown Stanovoy ENVELOPE(42.810,42.810,65.583,65.583) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change organic carbon paleolimnology Cyclotella Aulacoseira holocene thermal maximum diatoms pollen chironomids |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change organic carbon paleolimnology Cyclotella Aulacoseira holocene thermal maximum diatoms pollen chironomids Boris K. Biskaborn (8714472) Larisa Nazarova (8564058) Tim Kröger (11264091) Lyudmila A. Pestryakova (11264094) Liudmila Syrykh (8564085) Gregor Pfalz (8569770) Ulrike Herzschuh (5496668) Bernhard Diekmann (10698897) DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change organic carbon paleolimnology Cyclotella Aulacoseira holocene thermal maximum diatoms pollen chironomids |
description |
Millennial-scale climate change history in eastern Siberia and relationships between diatom diversity, paleoclimate, and sediment-geochemical lake system trajectories are still poorly understood. This study investigates multi-proxy time series reaching back to the Late Pleistocene derived from radiocarbon dated Lake Bolshoe Toko sediment cores, southeastern Yakutia, Russia. We analyzed diatoms, elements (XRF), minerals (XRD), grain-size, organic carbon, and included chironomid analyses and published pollen-data for quantitative paleoclimate reconstruction. Changes in diatom species abundances reveal repeated episodes of thermal stratification indicated by shifts from euplanktonic Aulacoseira to Cyclotella species. Chironomid and pollen-inferred temperature reconstruction reveal that the main shift between these diatom species is related to the onset of Holocene Thermal Maximum (HTM) at 7.1 cal ka BP. Comparison to other paleoclimate records along a north-south transect through Yakutia shows that the HTM was delayed as far south as the Stanovoy mountains. Relationships between sediment-geochemistry, paleoclimate variability and diatom species richness (alpha diversity) was tested in a moving temporal offset approach to detect lead-lag relationships. Sediment-geochemical data, mainly uniform during the Holocene, revealed strongest positive or negative correlations ahead of species richness changes. Mean July air temperature (T July ) reconstructions correlate with both Hill numbers and relative assemblage changes indicated by sample scores of multidimensional scaling analysis (MDS) over the entire time series. We found that sediment organic carbon revealed distinct positive correlations, i.e., centennial-scale delay to increases in diatom effective richness (Hill numbers N0 and N2). We conclude that a lag of deposited organic carbon concentrations behind changes in diatom alpha diversity reveals that species richness can augment the production and thus sequestration of organic matter in comparable lake systems. |
format |
Dataset |
author |
Boris K. Biskaborn (8714472) Larisa Nazarova (8564058) Tim Kröger (11264091) Lyudmila A. Pestryakova (11264094) Liudmila Syrykh (8564085) Gregor Pfalz (8569770) Ulrike Herzschuh (5496668) Bernhard Diekmann (10698897) |
author_facet |
Boris K. Biskaborn (8714472) Larisa Nazarova (8564058) Tim Kröger (11264091) Lyudmila A. Pestryakova (11264094) Liudmila Syrykh (8564085) Gregor Pfalz (8569770) Ulrike Herzschuh (5496668) Bernhard Diekmann (10698897) |
author_sort |
Boris K. Biskaborn (8714472) |
title |
DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx |
title_short |
DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx |
title_full |
DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx |
title_fullStr |
DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx |
title_full_unstemmed |
DataSheet2_Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia.xlsx |
title_sort |
datasheet2_late quaternary climate reconstruction and lead-lag relationships of biotic and sediment-geochemical indicators at lake bolshoe toko, siberia.xlsx |
publishDate |
2021 |
url |
https://doi.org/10.3389/feart.2021.737353.s002 |
long_lat |
ENVELOPE(42.810,42.810,65.583,65.583) |
geographic |
Stanovoy |
geographic_facet |
Stanovoy |
genre |
Yakutia Siberia |
genre_facet |
Yakutia Siberia |
op_relation |
https://figshare.com/articles/dataset/DataSheet2_Late_Quaternary_Climate_Reconstruction_and_Lead-Lag_Relationships_of_Biotic_and_Sediment-Geochemical_Indicators_at_Lake_Bolshoe_Toko_Siberia_xlsx/15154170 doi:10.3389/feart.2021.737353.s002 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2021.737353.s002 |
_version_ |
1766235947357175808 |