Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O 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 δ2H on...
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ftunivbern:oai:boris.unibe.ch:188283 2023-12-31T10:07:30+01:00 Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar Quintero, Gary Abdiel Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland 2023-10-28 application/pdf https://boris.unibe.ch/188283/1/s41598-023-45754-4.pdf https://boris.unibe.ch/188283/ eng eng Nature Publishing Group https://boris.unibe.ch/188283/ info:eu-repo/semantics/openAccess Prochnow, Maximilian; Strobel, Paul; Bliedtner, Marcel; Struck, Julian; Bittner, Lucas; Szidat, Sönke; Salazar Quintero, Gary Abdiel; Schneider, Heike; Acharya, Sudip; Zech, Michael; Zech, Roland (2023). Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. Scientific Reports, 13(1), p. 18487. Nature Publishing Group 10.1038/s41598-023-45754-4 <http://dx.doi.org/10.1038/s41598-023-45754-4> 540 Chemistry info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2023 ftunivbern https://doi.org/10.1038/s41598-023-45754-4 2023-12-04T00:50:37Z 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 δ2H on n-alkanes and δ18O on hemicellulose sugars in sediments from Bichlersee, Bavaria, covering the Late Glacial and Early Holocene. Our δ2Hn-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. δ18Ofucose records the isotopic composition of the lake water during summer and is sensitive to evaporative enrichment. Coupling δ2Hn-C31 and δ18Ofucose 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 δ2H and δ18O are thus important when interpreting isotope records. Article in Journal/Newspaper Greenland BORIS (Bern Open Repository and Information System, University of Bern) Scientific Reports 13 1 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
540 Chemistry |
spellingShingle |
540 Chemistry Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar Quintero, Gary Abdiel Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. |
topic_facet |
540 Chemistry |
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 δ2H on n-alkanes and δ18O on hemicellulose sugars in sediments from Bichlersee, Bavaria, covering the Late Glacial and Early Holocene. Our δ2Hn-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. δ18Ofucose records the isotopic composition of the lake water during summer and is sensitive to evaporative enrichment. Coupling δ2Hn-C31 and δ18Ofucose 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 δ2H and δ18O are thus important when interpreting isotope records. |
format |
Article in Journal/Newspaper |
author |
Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar Quintero, Gary Abdiel Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland |
author_facet |
Prochnow, Maximilian Strobel, Paul Bliedtner, Marcel Struck, Julian Bittner, Lucas Szidat, Sönke Salazar Quintero, Gary Abdiel Schneider, Heike Acharya, Sudip Zech, Michael Zech, Roland |
author_sort |
Prochnow, Maximilian |
title |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. |
title_short |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. |
title_full |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. |
title_fullStr |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. |
title_full_unstemmed |
Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. |
title_sort |
summer paleohydrology during the late glacial and early holocene based on δ2h and δ18o from bichlersee, bavaria. |
publisher |
Nature Publishing Group |
publishDate |
2023 |
url |
https://boris.unibe.ch/188283/1/s41598-023-45754-4.pdf https://boris.unibe.ch/188283/ |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Prochnow, Maximilian; Strobel, Paul; Bliedtner, Marcel; Struck, Julian; Bittner, Lucas; Szidat, Sönke; Salazar Quintero, Gary Abdiel; Schneider, Heike; Acharya, Sudip; Zech, Michael; Zech, Roland (2023). Summer paleohydrology during the Late Glacial and Early Holocene based on δ2H and δ18O from Bichlersee, Bavaria. Scientific Reports, 13(1), p. 18487. Nature Publishing Group 10.1038/s41598-023-45754-4 <http://dx.doi.org/10.1038/s41598-023-45754-4> |
op_relation |
https://boris.unibe.ch/188283/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-023-45754-4 |
container_title |
Scientific Reports |
container_volume |
13 |
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1 |
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1786839907807789056 |