Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments
Abstract Reliable high‐resolution, pre‐observational‐period sea‐ice datasets are rare but critical for contextualizing recent sea‐ice declines and future scenarios. We combine sedimentary ancient DNA of the sea‐ice dinoflagellate Polarella glacialis (Pgla‐sedaDNA) with selected highly branched isopr...
Published in: | Limnology and Oceanography Letters |
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Online Access: | http://dx.doi.org/10.1002/lol2.10395 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10395 |
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crwiley:10.1002/lol2.10395 2024-06-23T07:45:40+00:00 Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments Pieńkowski, Anna J. Szczuciński, Witold Breszka, Agnieszka Chyleński, Maciej Juras, Anna Romel, Paulina Rozwalak, Piotr Trzebny, Artur Dabert, Mirosława Belt, Simon T. Jagodziński, Robert Smik, Lukas Włodarski, Wojciech Narodowe Centrum Nauki 2024 http://dx.doi.org/10.1002/lol2.10395 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10395 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography Letters ISSN 2378-2242 2378-2242 journal-article 2024 crwiley https://doi.org/10.1002/lol2.10395 2024-06-13T04:22:40Z Abstract Reliable high‐resolution, pre‐observational‐period sea‐ice datasets are rare but critical for contextualizing recent sea‐ice declines and future scenarios. We combine sedimentary ancient DNA of the sea‐ice dinoflagellate Polarella glacialis (Pgla‐sedaDNA) with selected highly branched isoprenoid (HBI) biomarkers alongside other indicators to reconstruct sub‐decadal sea‐ice changes in a marine archive from the Antarctic Peninsula that extends to ~ 1900 CE. Pre‐1940 CE, the continuously present sea‐ice biomarker IPSO 25 yet absent Pgla‐sedaDNA, along with low open‐water biomarkers and total organic carbon (TOC), imply more prominent seasonal sea ice and lower productivity under cooler climate. Post‐1940 CE , rising Pgla‐sedaDNA and open‐water HBIs under climate warming reflect young ice with a retreating sea‐ice edge. Over the last two decades, lower Pgla‐sedaDNA, higher open‐water HBIs and TOC infer known warming, sea‐ice reduction, and increased productivity. Our multiproxy‐based palaeo‐histories agree well with observational data, highlighting the potential of this combination of proxies for nuanced and long‐term sea‐ice reconstructions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice Wiley Online Library Antarctic Antarctic Peninsula The Antarctic Limnology and Oceanography Letters |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Reliable high‐resolution, pre‐observational‐period sea‐ice datasets are rare but critical for contextualizing recent sea‐ice declines and future scenarios. We combine sedimentary ancient DNA of the sea‐ice dinoflagellate Polarella glacialis (Pgla‐sedaDNA) with selected highly branched isoprenoid (HBI) biomarkers alongside other indicators to reconstruct sub‐decadal sea‐ice changes in a marine archive from the Antarctic Peninsula that extends to ~ 1900 CE. Pre‐1940 CE, the continuously present sea‐ice biomarker IPSO 25 yet absent Pgla‐sedaDNA, along with low open‐water biomarkers and total organic carbon (TOC), imply more prominent seasonal sea ice and lower productivity under cooler climate. Post‐1940 CE , rising Pgla‐sedaDNA and open‐water HBIs under climate warming reflect young ice with a retreating sea‐ice edge. Over the last two decades, lower Pgla‐sedaDNA, higher open‐water HBIs and TOC infer known warming, sea‐ice reduction, and increased productivity. Our multiproxy‐based palaeo‐histories agree well with observational data, highlighting the potential of this combination of proxies for nuanced and long‐term sea‐ice reconstructions. |
author2 |
Narodowe Centrum Nauki |
format |
Article in Journal/Newspaper |
author |
Pieńkowski, Anna J. Szczuciński, Witold Breszka, Agnieszka Chyleński, Maciej Juras, Anna Romel, Paulina Rozwalak, Piotr Trzebny, Artur Dabert, Mirosława Belt, Simon T. Jagodziński, Robert Smik, Lukas Włodarski, Wojciech |
spellingShingle |
Pieńkowski, Anna J. Szczuciński, Witold Breszka, Agnieszka Chyleński, Maciej Juras, Anna Romel, Paulina Rozwalak, Piotr Trzebny, Artur Dabert, Mirosława Belt, Simon T. Jagodziński, Robert Smik, Lukas Włodarski, Wojciech Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments |
author_facet |
Pieńkowski, Anna J. Szczuciński, Witold Breszka, Agnieszka Chyleński, Maciej Juras, Anna Romel, Paulina Rozwalak, Piotr Trzebny, Artur Dabert, Mirosława Belt, Simon T. Jagodziński, Robert Smik, Lukas Włodarski, Wojciech |
author_sort |
Pieńkowski, Anna J. |
title |
Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments |
title_short |
Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments |
title_full |
Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments |
title_fullStr |
Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments |
title_full_unstemmed |
Sedimentary ancient DNA and HBI biomarkers as sea‐ice indicators: A complementary approach in Antarctic fjord environments |
title_sort |
sedimentary ancient dna and hbi biomarkers as sea‐ice indicators: a complementary approach in antarctic fjord environments |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1002/lol2.10395 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10395 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice |
op_source |
Limnology and Oceanography Letters ISSN 2378-2242 2378-2242 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lol2.10395 |
container_title |
Limnology and Oceanography Letters |
_version_ |
1802641863648215040 |