A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core
Englacial ice contains a significant reservoir of organic material (OM), preserving a chronological record of materials from Earth's past. Here, we investigate if OM composition surveys in ice core research can provide paleoecological information on the dynamic nature of our Earth through time....
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ftdoajarticles:oai:doaj.org/article:4967d07aa6454248af3c173a7f9315c8 2023-05-15T13:30:38+02:00 A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core J. D'Andrilli C. M. Foreman M. Sigl J. C. Priscu J. R. McConnell 2017-05-01T00:00:00Z https://doi.org/10.5194/cp-13-533-2017 https://doaj.org/article/4967d07aa6454248af3c173a7f9315c8 EN eng Copernicus Publications http://www.clim-past.net/13/533/2017/cp-13-533-2017.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 doi:10.5194/cp-13-533-2017 https://doaj.org/article/4967d07aa6454248af3c173a7f9315c8 Climate of the Past, Vol 13, Iss 5, Pp 533-544 (2017) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2017 ftdoajarticles https://doi.org/10.5194/cp-13-533-2017 2022-12-31T03:49:56Z Englacial ice contains a significant reservoir of organic material (OM), preserving a chronological record of materials from Earth's past. Here, we investigate if OM composition surveys in ice core research can provide paleoecological information on the dynamic nature of our Earth through time. Temporal trends in OM composition from the early Holocene extending back to the Last Glacial Maximum (LGM) of the West Antarctic Ice Sheet Divide (WD) ice core were measured by fluorescence spectroscopy. Multivariate parallel factor (PARAFAC) analysis is widely used to isolate the chemical components that best describe the observed variation across three-dimensional fluorescence spectroscopy (excitation–emission matrices; EEMs) assays. Fluorescent OM markers identified by PARAFAC modeling of the EEMs from the LGM (27.0–18.0 kyr BP; before present 1950) through the last deglaciation (LD; 18.0–11.5 kyr BP), to the mid-Holocene (11.5–6.0 kyr BP) provided evidence of different types of fluorescent OM composition and origin in the WD ice core over 21.0 kyr. Low excitation–emission wavelength fluorescent PARAFAC component one (C1), associated with chemical species similar to simple lignin phenols was the greatest contributor throughout the ice core, suggesting a strong signature of terrestrial OM in all climate periods. The component two (C2) OM marker, encompassed distinct variability in the ice core describing chemical species similar to tannin- and phenylalanine-like material. Component three (C3), associated with humic-like terrestrial material further resistant to biodegradation, was only characteristic of the Holocene, suggesting that more complex organic polymers such as lignins or tannins may be an ecological marker of warmer climates. We suggest that fluorescent OM markers observed during the LGM were the result of greater continental dust loading of lignin precursor (monolignol) material in a drier climate, with lower marine influences when sea ice extent was higher and continents had more expansive tundra cover. As ... Article in Journal/Newspaper Antarc* Antarctic ice core Ice Sheet Sea ice Tundra Directory of Open Access Journals: DOAJ Articles Antarctic West Antarctic Ice Sheet Climate of the Past 13 5 533 544 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 J. D'Andrilli C. M. Foreman M. Sigl J. C. Priscu J. R. McConnell A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
Englacial ice contains a significant reservoir of organic material (OM), preserving a chronological record of materials from Earth's past. Here, we investigate if OM composition surveys in ice core research can provide paleoecological information on the dynamic nature of our Earth through time. Temporal trends in OM composition from the early Holocene extending back to the Last Glacial Maximum (LGM) of the West Antarctic Ice Sheet Divide (WD) ice core were measured by fluorescence spectroscopy. Multivariate parallel factor (PARAFAC) analysis is widely used to isolate the chemical components that best describe the observed variation across three-dimensional fluorescence spectroscopy (excitation–emission matrices; EEMs) assays. Fluorescent OM markers identified by PARAFAC modeling of the EEMs from the LGM (27.0–18.0 kyr BP; before present 1950) through the last deglaciation (LD; 18.0–11.5 kyr BP), to the mid-Holocene (11.5–6.0 kyr BP) provided evidence of different types of fluorescent OM composition and origin in the WD ice core over 21.0 kyr. Low excitation–emission wavelength fluorescent PARAFAC component one (C1), associated with chemical species similar to simple lignin phenols was the greatest contributor throughout the ice core, suggesting a strong signature of terrestrial OM in all climate periods. The component two (C2) OM marker, encompassed distinct variability in the ice core describing chemical species similar to tannin- and phenylalanine-like material. Component three (C3), associated with humic-like terrestrial material further resistant to biodegradation, was only characteristic of the Holocene, suggesting that more complex organic polymers such as lignins or tannins may be an ecological marker of warmer climates. We suggest that fluorescent OM markers observed during the LGM were the result of greater continental dust loading of lignin precursor (monolignol) material in a drier climate, with lower marine influences when sea ice extent was higher and continents had more expansive tundra cover. As ... |
format |
Article in Journal/Newspaper |
author |
J. D'Andrilli C. M. Foreman M. Sigl J. C. Priscu J. R. McConnell |
author_facet |
J. D'Andrilli C. M. Foreman M. Sigl J. C. Priscu J. R. McConnell |
author_sort |
J. D'Andrilli |
title |
A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core |
title_short |
A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core |
title_full |
A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core |
title_fullStr |
A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core |
title_full_unstemmed |
A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core |
title_sort |
21 000-year record of fluorescent organic matter markers in the wais divide ice core |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/cp-13-533-2017 https://doaj.org/article/4967d07aa6454248af3c173a7f9315c8 |
geographic |
Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic ice core Ice Sheet Sea ice Tundra |
genre_facet |
Antarc* Antarctic ice core Ice Sheet Sea ice Tundra |
op_source |
Climate of the Past, Vol 13, Iss 5, Pp 533-544 (2017) |
op_relation |
http://www.clim-past.net/13/533/2017/cp-13-533-2017.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 doi:10.5194/cp-13-533-2017 https://doaj.org/article/4967d07aa6454248af3c173a7f9315c8 |
op_doi |
https://doi.org/10.5194/cp-13-533-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
5 |
container_start_page |
533 |
op_container_end_page |
544 |
_version_ |
1766011056525672448 |