Fossil chironomids of Lake Temje
A 380 cm long sediment core from Lake Temje (central Yakutia, Eastern Siberia) was studied to infer Holocene palaeoenvironmental change in the extreme periglacial setting of eastern Siberia during the last 10,000 years. Data on sediment composition were used to characterize changes in the deposition...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.802679 2024-09-15T18:24:03+00:00 Fossil chironomids of Lake Temje Nazarova, Larisa B Lüpfert, Herman Subetto, Dmitry A Pestryakova, Luidmila A Diekmann, Bernhard LATITUDE: 62.050000 * LONGITUDE: 129.483300 2013 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.802679 https://doi.org/10.1594/PANGAEA.802679 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.802679 https://doi.org/10.1594/PANGAEA.802679 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Nazarova, Larisa B; Lüpfert, Herman; Subetto, Dmitry A; Pestryakova, Luidmila A; Diekmann, Bernhard (2013): Holocene climate conditions in central Yakutia (Eastern Siberia) inferred from sediment composition and fossil chironomids of Lake Temje. Quaternary International, 290-291, 264-274, https://doi.org/10.1016/j.quaint.2012.11.006 AWI_PerDyn Central Yakutia Russia Lake Temje Permafrost Research (Periglacial Dynamics) @ AWI PG1746 RPC Russian peat corer dataset publication series 2013 ftpangaea https://doi.org/10.1594/PANGAEA.80267910.1016/j.quaint.2012.11.006 2024-07-24T02:31:21Z A 380 cm long sediment core from Lake Temje (central Yakutia, Eastern Siberia) was studied to infer Holocene palaeoenvironmental change in the extreme periglacial setting of eastern Siberia during the last 10,000 years. Data on sediment composition were used to characterize changes in the depositional environment during the ontogenetic development of the Lake Temje. The analysis of fossil chironomid remains and statistical treatment of chironomid data by the application of a newly developed regional Russian transfer functions provided inferences of mean July air temperatures (T_July) and water depths (WD). Reconstructed WDs show minor changes throughout the core and range between 80 and 120 cm. All the fluctuations in reconstructed water depth lie within the mean error of prediction of the inference model (RMSEP = 0.35) so it is not possible to draw conclusions from the reconstructions. A qualitative and quantitative reconstruction of Holocene climate in central Yakutia recognized three stages of palaeoenvironmental changes. The early Holocene between 10 and 8 ka BP was characterized by colder-than-today and moist summer conditions. Cryotextures in the lake sediments document full freezing of the lake water during the winter time. A general warming trend started around 8.0 ka BP in concert with enhanced biological productivity. Reconstructed mean T_July were equal or up to 1.5 °C higher than today between 6.0 ka and 5.0 ka BP. During the entire late Holocene after 4.8 ka BP, reconstructed mean T_July remained below modern value. Limnological conditions did not change significantly. The inference of a mid-Holocene climate optimum supports scenarios of Holocene climatic changes in the subpolar part of eastern Siberia and indicates climate teleconnections to the North Atlantic realm. Other/Unknown Material North Atlantic permafrost Yakutia Siberia PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(129.483300,129.483300,62.050000,62.050000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn Central Yakutia Russia Lake Temje Permafrost Research (Periglacial Dynamics) @ AWI PG1746 RPC Russian peat corer |
spellingShingle |
AWI_PerDyn Central Yakutia Russia Lake Temje Permafrost Research (Periglacial Dynamics) @ AWI PG1746 RPC Russian peat corer Nazarova, Larisa B Lüpfert, Herman Subetto, Dmitry A Pestryakova, Luidmila A Diekmann, Bernhard Fossil chironomids of Lake Temje |
topic_facet |
AWI_PerDyn Central Yakutia Russia Lake Temje Permafrost Research (Periglacial Dynamics) @ AWI PG1746 RPC Russian peat corer |
description |
A 380 cm long sediment core from Lake Temje (central Yakutia, Eastern Siberia) was studied to infer Holocene palaeoenvironmental change in the extreme periglacial setting of eastern Siberia during the last 10,000 years. Data on sediment composition were used to characterize changes in the depositional environment during the ontogenetic development of the Lake Temje. The analysis of fossil chironomid remains and statistical treatment of chironomid data by the application of a newly developed regional Russian transfer functions provided inferences of mean July air temperatures (T_July) and water depths (WD). Reconstructed WDs show minor changes throughout the core and range between 80 and 120 cm. All the fluctuations in reconstructed water depth lie within the mean error of prediction of the inference model (RMSEP = 0.35) so it is not possible to draw conclusions from the reconstructions. A qualitative and quantitative reconstruction of Holocene climate in central Yakutia recognized three stages of palaeoenvironmental changes. The early Holocene between 10 and 8 ka BP was characterized by colder-than-today and moist summer conditions. Cryotextures in the lake sediments document full freezing of the lake water during the winter time. A general warming trend started around 8.0 ka BP in concert with enhanced biological productivity. Reconstructed mean T_July were equal or up to 1.5 °C higher than today between 6.0 ka and 5.0 ka BP. During the entire late Holocene after 4.8 ka BP, reconstructed mean T_July remained below modern value. Limnological conditions did not change significantly. The inference of a mid-Holocene climate optimum supports scenarios of Holocene climatic changes in the subpolar part of eastern Siberia and indicates climate teleconnections to the North Atlantic realm. |
format |
Other/Unknown Material |
author |
Nazarova, Larisa B Lüpfert, Herman Subetto, Dmitry A Pestryakova, Luidmila A Diekmann, Bernhard |
author_facet |
Nazarova, Larisa B Lüpfert, Herman Subetto, Dmitry A Pestryakova, Luidmila A Diekmann, Bernhard |
author_sort |
Nazarova, Larisa B |
title |
Fossil chironomids of Lake Temje |
title_short |
Fossil chironomids of Lake Temje |
title_full |
Fossil chironomids of Lake Temje |
title_fullStr |
Fossil chironomids of Lake Temje |
title_full_unstemmed |
Fossil chironomids of Lake Temje |
title_sort |
fossil chironomids of lake temje |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.802679 https://doi.org/10.1594/PANGAEA.802679 |
op_coverage |
LATITUDE: 62.050000 * LONGITUDE: 129.483300 |
long_lat |
ENVELOPE(129.483300,129.483300,62.050000,62.050000) |
genre |
North Atlantic permafrost Yakutia Siberia |
genre_facet |
North Atlantic permafrost Yakutia Siberia |
op_source |
Supplement to: Nazarova, Larisa B; Lüpfert, Herman; Subetto, Dmitry A; Pestryakova, Luidmila A; Diekmann, Bernhard (2013): Holocene climate conditions in central Yakutia (Eastern Siberia) inferred from sediment composition and fossil chironomids of Lake Temje. Quaternary International, 290-291, 264-274, https://doi.org/10.1016/j.quaint.2012.11.006 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.802679 https://doi.org/10.1594/PANGAEA.802679 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80267910.1016/j.quaint.2012.11.006 |
_version_ |
1810464337283776512 |