Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene
We present the first long-term, highly resolved prokaryotic cell concentration record obtained from a polar ice core. This record, obtained from the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core, spanned from the Last Glacial Maximum (LGM) to the early Holocene (EH) and showed distinct fluctu...
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ftmontanastateu:oai:scholarworks.montana.edu:1/14821 2023-05-15T13:54:59+02:00 Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene Santibanez, Pamela A. Maselli, Olivia J. Greenwood, Mark C. Grieman, Mackenzie M. Saltzman, Eric S. McConnell, Joseph R. Priscu, John C. 2018-05 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/14821 en eng Santibanez, Pamela A., Olivia J. Maselli, Mark C. Greenwood, Mackenzie M. Grieman, Eric S. Saltzman, Joseph R. McConnell, and John C. Priscu. "Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene." Global Change Biology 24, no. 5 (May 2018): 2182-2197. DOI:10.1111/gcb.14042. 1354-1013 https://scholarworks.montana.edu/xmlui/handle/1/14821 This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). http://rightsstatements.org/vocab/InC/1.0/ Article 2018 ftmontanastateu https://doi.org/10.1111/gcb.14042 2022-06-06T07:29:00Z We present the first long-term, highly resolved prokaryotic cell concentration record obtained from a polar ice core. This record, obtained from the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core, spanned from the Last Glacial Maximum (LGM) to the early Holocene (EH) and showed distinct fluctuations in prokaryotic cell concentration coincident with major climatic states. The time series also revealed a ~1,500-year periodicity with greater amplitude during the Last Deglaciation (LDG). Higher prokaryotic cell concentration and lower variability occurred during the LGM and EH than during the LDG. A seven-fold decrease in prokaryotic cell concentration coincided with the LGM/LDG transition and the global 19 ka meltwater pulse. Statistical models revealed significant relationships between the prokaryotic cell record and tracers of both marine (sea-salt sodium [ssNa]) and burning emissions (black carbon [BC]). Collectively, these models, together with visual observations and methanosulfidic acid (MSA) measurements, indicated that the temporal variability in concentration of airborne prokaryotic cells reflected changes in marine/sea-ice regional environments of the WAIS. Our data revealed that variations in source and transport were the most likely processes producing the significant temporal variations in WD prokaryotic cell concentrations. This record provided strong evidence that airborne prokaryotic cell deposition differed during the LGM, LDG and EH, and that these changes in cell densities could be explained by different environmental conditions during each of these climatic periods. Our observations provide the first ice core time-series evidence for a prokaryotic response to long-term climatic and environmental processes. U.S. National Science Foundation (NSF). Grant Numbers: 0440943, 0839075, 0839093, 1142166; Chile Fulbright-BIO-CONICYT Scholarship Article in Journal/Newspaper Antarc* Antarctic ice core Ice Sheet Sea ice Montana State University (MSU): ScholarWorks Antarctic West Antarctic Ice Sheet Global Change Biology 24 5 2182 2197 |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
English |
description |
We present the first long-term, highly resolved prokaryotic cell concentration record obtained from a polar ice core. This record, obtained from the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core, spanned from the Last Glacial Maximum (LGM) to the early Holocene (EH) and showed distinct fluctuations in prokaryotic cell concentration coincident with major climatic states. The time series also revealed a ~1,500-year periodicity with greater amplitude during the Last Deglaciation (LDG). Higher prokaryotic cell concentration and lower variability occurred during the LGM and EH than during the LDG. A seven-fold decrease in prokaryotic cell concentration coincided with the LGM/LDG transition and the global 19 ka meltwater pulse. Statistical models revealed significant relationships between the prokaryotic cell record and tracers of both marine (sea-salt sodium [ssNa]) and burning emissions (black carbon [BC]). Collectively, these models, together with visual observations and methanosulfidic acid (MSA) measurements, indicated that the temporal variability in concentration of airborne prokaryotic cells reflected changes in marine/sea-ice regional environments of the WAIS. Our data revealed that variations in source and transport were the most likely processes producing the significant temporal variations in WD prokaryotic cell concentrations. This record provided strong evidence that airborne prokaryotic cell deposition differed during the LGM, LDG and EH, and that these changes in cell densities could be explained by different environmental conditions during each of these climatic periods. Our observations provide the first ice core time-series evidence for a prokaryotic response to long-term climatic and environmental processes. U.S. National Science Foundation (NSF). Grant Numbers: 0440943, 0839075, 0839093, 1142166; Chile Fulbright-BIO-CONICYT Scholarship |
format |
Article in Journal/Newspaper |
author |
Santibanez, Pamela A. Maselli, Olivia J. Greenwood, Mark C. Grieman, Mackenzie M. Saltzman, Eric S. McConnell, Joseph R. Priscu, John C. |
spellingShingle |
Santibanez, Pamela A. Maselli, Olivia J. Greenwood, Mark C. Grieman, Mackenzie M. Saltzman, Eric S. McConnell, Joseph R. Priscu, John C. Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene |
author_facet |
Santibanez, Pamela A. Maselli, Olivia J. Greenwood, Mark C. Grieman, Mackenzie M. Saltzman, Eric S. McConnell, Joseph R. Priscu, John C. |
author_sort |
Santibanez, Pamela A. |
title |
Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene |
title_short |
Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene |
title_full |
Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene |
title_fullStr |
Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene |
title_full_unstemmed |
Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene |
title_sort |
prokaryotes in the wais divide ice core reflect source and transport changes between last glacial maximum and the early holocene |
publishDate |
2018 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/14821 |
geographic |
Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic ice core Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic ice core Ice Sheet Sea ice |
op_relation |
Santibanez, Pamela A., Olivia J. Maselli, Mark C. Greenwood, Mackenzie M. Grieman, Eric S. Saltzman, Joseph R. McConnell, and John C. Priscu. "Prokaryotes in the WAIS Divide ice core reflect source and transport changes between Last Glacial Maximum and the early Holocene." Global Change Biology 24, no. 5 (May 2018): 2182-2197. DOI:10.1111/gcb.14042. 1354-1013 https://scholarworks.montana.edu/xmlui/handle/1/14821 |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.1111/gcb.14042 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
5 |
container_start_page |
2182 |
op_container_end_page |
2197 |
_version_ |
1766261205639364608 |