Anna J. Pieńkowski, Witold Szczuciński, Agnieszka Breszka, Maciej Chyleński, Anna Juras, Paulina Romel, Piotr Rozwalak, Artur Trzebny, Mirosława Dabert, Simon T. Belt, Robert Jagodziński, Lukas Smik, Wojciech Włodarski
{"title":"沉积古DNA和HBI生物标记作为海冰指标：南极峡湾环境中的互补方法","authors":"Anna J. Pieńkowski, Witold Szczuciński, Agnieszka Breszka, Maciej Chyleński, Anna Juras, Paulina Romel, Piotr Rozwalak, Artur Trzebny, Mirosława Dabert, Simon T. Belt, Robert Jagodziński, Lukas Smik, Wojciech Włodarski","doi":"10.1002/lol2.10395","DOIUrl":null,"url":null,"abstract":"<p>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 <i>Polarella glacialis</i> (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<sub>25</sub> 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 <span>CE</span>, 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.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 6","pages":"785-795"},"PeriodicalIF":5.1000,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10395","citationCount":"0","resultStr":"{\"title\":\"Sedimentary ancient DNA and HBI biomarkers as sea-ice indicators: A complementary approach in Antarctic fjord environments\",\"authors\":\"Anna J. Pieńkowski, Witold Szczuciński, Agnieszka Breszka, Maciej Chyleński, Anna Juras, Paulina Romel, Piotr Rozwalak, Artur Trzebny, Mirosława Dabert, Simon T. Belt, Robert Jagodziński, Lukas Smik, Wojciech Włodarski\",\"doi\":\"10.1002/lol2.10395\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>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 <i>Polarella glacialis</i> (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<sub>25</sub> 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 <span>CE</span>, 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.</p>\",\"PeriodicalId\":18128,\"journal\":{\"name\":\"Limnology and Oceanography Letters\",\"volume\":\"9 6\",\"pages\":\"785-795\"},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2024-05-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10395\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Limnology and Oceanography Letters\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/lol2.10395\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"LIMNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Limnology and Oceanography Letters","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/lol2.10395","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"LIMNOLOGY","Score":null,"Total":0}
Sedimentary ancient DNA and HBI biomarkers as sea-ice indicators: A complementary approach in Antarctic fjord environments
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 IPSO25 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.
期刊介绍：
Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.
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