Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria
Isotope-based records provide valuable information on past climate changes. However, it is not always trivial to disentangle past changes in the isotopic composition of precipitation from possible changes in evaporative enrichment, and seasonality may need to be considered. Here, we analyzed δ(2)H o...
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ftpubmed:oai:pubmedcentral.nih.gov:10613243 2023-12-03T10:23:34+01:00 Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar, Gary Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland 2023-10-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613243/ http://www.ncbi.nlm.nih.gov/pubmed/37898674 https://doi.org/10.1038/s41598-023-45754-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613243/ http://www.ncbi.nlm.nih.gov/pubmed/37898674 http://dx.doi.org/10.1038/s41598-023-45754-4 © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . Sci Rep Article Text 2023 ftpubmed https://doi.org/10.1038/s41598-023-45754-4 2023-11-05T02:00:44Z Isotope-based records provide valuable information on past climate changes. However, it is not always trivial to disentangle past changes in the isotopic composition of precipitation from possible changes in evaporative enrichment, and seasonality may need to be considered. Here, we analyzed δ(2)H on n-alkanes and δ(18)O on hemicellulose sugars in sediments from Bichlersee, Bavaria, covering the Late Glacial and Early Holocene. Our δ(2)H(n-C31) record documents past changes in the isotopic composition of summer precipitation and roughly shows the isotope pattern known from Greenland. Both records show lower values during the Younger Dryas, but at Bichlersee the signal is less pronounced, corroborating earlier suggestions that the Younger Dryas was mainly a winter phenomenon and less extreme during summer. δ(18)O(fucose) records the isotopic composition of the lake water during summer and is sensitive to evaporative enrichment. Coupling δ(2)H(n-C31) and δ(18)O(fucose) allows calculating lake water deuterium-excess and thus disentangling changes in the isotopic composition of precipitation and evaporative enrichment. Our deuterium-excess record reveals that the warm Bølling–Allerød and Early Holocene were characterized by more evaporative enrichment compared to the colder Younger Dryas. Site-specific hydrological conditions, seasonality, and coupling δ(2)H and δ(18)O are thus important when interpreting isotope records. Text Greenland PubMed Central (PMC) Greenland Scientific Reports 13 1 |
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Article Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar, Gary Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria |
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Article |
description |
Isotope-based records provide valuable information on past climate changes. However, it is not always trivial to disentangle past changes in the isotopic composition of precipitation from possible changes in evaporative enrichment, and seasonality may need to be considered. Here, we analyzed δ(2)H on n-alkanes and δ(18)O on hemicellulose sugars in sediments from Bichlersee, Bavaria, covering the Late Glacial and Early Holocene. Our δ(2)H(n-C31) record documents past changes in the isotopic composition of summer precipitation and roughly shows the isotope pattern known from Greenland. Both records show lower values during the Younger Dryas, but at Bichlersee the signal is less pronounced, corroborating earlier suggestions that the Younger Dryas was mainly a winter phenomenon and less extreme during summer. δ(18)O(fucose) records the isotopic composition of the lake water during summer and is sensitive to evaporative enrichment. Coupling δ(2)H(n-C31) and δ(18)O(fucose) allows calculating lake water deuterium-excess and thus disentangling changes in the isotopic composition of precipitation and evaporative enrichment. Our deuterium-excess record reveals that the warm Bølling–Allerød and Early Holocene were characterized by more evaporative enrichment compared to the colder Younger Dryas. Site-specific hydrological conditions, seasonality, and coupling δ(2)H and δ(18)O are thus important when interpreting isotope records. |
format |
Text |
author |
Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar, Gary Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland |
author_facet |
Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar, Gary Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland |
author_sort |
Prochnow, Maximilian |
title |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria |
title_short |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria |
title_full |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria |
title_fullStr |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria |
title_full_unstemmed |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ(2)H and δ(18)O from Bichlersee, Bavaria |
title_sort |
summer paleohydrology during the late glacial and early holocene based on δ(2)h and δ(18)o from bichlersee, bavaria |
publisher |
Nature Publishing Group UK |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613243/ http://www.ncbi.nlm.nih.gov/pubmed/37898674 https://doi.org/10.1038/s41598-023-45754-4 |
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Greenland |
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Greenland |
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Greenland |
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Sci Rep |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613243/ http://www.ncbi.nlm.nih.gov/pubmed/37898674 http://dx.doi.org/10.1038/s41598-023-45754-4 |
op_rights |
© The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_doi |
https://doi.org/10.1038/s41598-023-45754-4 |
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