Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic
Thermokarst lakes in the Siberian Arctic contain sediment archives that can be used for paleoenvironmental inference. Until now, however, there has been no study from the inner Lena River Delta with a focus on diatoms. The objective of this study was to investigate how the diatom community in a ther...
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Online Access: | https://epic.awi.de/id/eprint/25536/ http://link.springer.com/article/10.1007%2Fs10933-012-9650-1 https://hdl.handle.net/10013/epic.40118 |
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ftawi:oai:epic.awi.de:25536 2024-09-15T17:51:26+00:00 Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, D. Y. Savelieva, Larissa Diekmann, Bernhard 2013 https://epic.awi.de/id/eprint/25536/ http://link.springer.com/article/10.1007%2Fs10933-012-9650-1 https://hdl.handle.net/10013/epic.40118 unknown SPRINGER Biskaborn, B. K. orcid:0000-0003-2378-0348 , Herzschuh, U. orcid:0000-0003-0999-1261 , Bolshiyanov, D. Y. , Savelieva, L. and Diekmann, B. orcid:0000-0001-5129-3649 (2013) Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic , Journal of Paleolimnology, 49 , pp. 155-170 . doi:10.1007/s10933-012-9650-1 <https://doi.org/10.1007/s10933-012-9650-1> , hdl:10013/epic.40118 EPIC3Journal of Paleolimnology, SPRINGER, 49, pp. 155-170 Article isiRev 2013 ftawi https://doi.org/10.1007/s10933-012-9650-1 2024-06-24T04:03:41Z Thermokarst lakes in the Siberian Arctic contain sediment archives that can be used for paleoenvironmental inference. Until now, however, there has been no study from the inner Lena River Delta with a focus on diatoms. The objective of this study was to investigate how the diatom community in a thermokarst lake responded to past limnogeological changes and what specific factors drove variations in the diatom assemblage. We analysed fossil diatom species, organic content, grain-size distribution and elemental composition in a sediment core retrieved in 2009 from a shallow thermokarst lake in the Arga Complex, western Lena River Delta. The core contains a 3,000-year record of sediment accumulation. Shifts in the predominantly benthic and epiphytic diatom species composition parallel changes in sediment characteristics. Paleoenvironmental and limnogeological development, inferred from multiple biological and sedimentological variables, are discussed in the context of four diatom zones, and indicate a strong relation between changes in the diatom assemblage and thermokarst processes. We conclude that limnogeological and thermokarst processes such as lake drainage, rather than direct climate forcing, were the main factors that altered the aquatic ecosystem by influencing, for example, habitat availability, hydrochemistry, and water level. Article in Journal/Newspaper Arctic lena delta lena river Thermokarst Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Journal of Paleolimnology 49 2 155 170 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Thermokarst lakes in the Siberian Arctic contain sediment archives that can be used for paleoenvironmental inference. Until now, however, there has been no study from the inner Lena River Delta with a focus on diatoms. The objective of this study was to investigate how the diatom community in a thermokarst lake responded to past limnogeological changes and what specific factors drove variations in the diatom assemblage. We analysed fossil diatom species, organic content, grain-size distribution and elemental composition in a sediment core retrieved in 2009 from a shallow thermokarst lake in the Arga Complex, western Lena River Delta. The core contains a 3,000-year record of sediment accumulation. Shifts in the predominantly benthic and epiphytic diatom species composition parallel changes in sediment characteristics. Paleoenvironmental and limnogeological development, inferred from multiple biological and sedimentological variables, are discussed in the context of four diatom zones, and indicate a strong relation between changes in the diatom assemblage and thermokarst processes. We conclude that limnogeological and thermokarst processes such as lake drainage, rather than direct climate forcing, were the main factors that altered the aquatic ecosystem by influencing, for example, habitat availability, hydrochemistry, and water level. |
format |
Article in Journal/Newspaper |
author |
Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, D. Y. Savelieva, Larissa Diekmann, Bernhard |
spellingShingle |
Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, D. Y. Savelieva, Larissa Diekmann, Bernhard Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic |
author_facet |
Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, D. Y. Savelieva, Larissa Diekmann, Bernhard |
author_sort |
Biskaborn, Boris K. |
title |
Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic |
title_short |
Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic |
title_full |
Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic |
title_fullStr |
Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic |
title_full_unstemmed |
Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic |
title_sort |
late holocene thermokarst variability inferred from diatoms in a lake sediment record from the lena delta, siberian arctic |
publisher |
SPRINGER |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/25536/ http://link.springer.com/article/10.1007%2Fs10933-012-9650-1 https://hdl.handle.net/10013/epic.40118 |
genre |
Arctic lena delta lena river Thermokarst |
genre_facet |
Arctic lena delta lena river Thermokarst |
op_source |
EPIC3Journal of Paleolimnology, SPRINGER, 49, pp. 155-170 |
op_relation |
Biskaborn, B. K. orcid:0000-0003-2378-0348 , Herzschuh, U. orcid:0000-0003-0999-1261 , Bolshiyanov, D. Y. , Savelieva, L. and Diekmann, B. orcid:0000-0001-5129-3649 (2013) Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic , Journal of Paleolimnology, 49 , pp. 155-170 . doi:10.1007/s10933-012-9650-1 <https://doi.org/10.1007/s10933-012-9650-1> , hdl:10013/epic.40118 |
op_doi |
https://doi.org/10.1007/s10933-012-9650-1 |
container_title |
Journal of Paleolimnology |
container_volume |
49 |
container_issue |
2 |
container_start_page |
155 |
op_container_end_page |
170 |
_version_ |
1810293339911618560 |