Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment
The polar foraminifera Neogloboquadrina pachyderma (sinistral) dominates assemblages from the high latitude Southern Ocean, which plays a key role in determining past climate due to the tight linkage between Antarctic temperature and atmospheric CO(2). Here, we use N. pachyderma (s.) harvested from...
Published in: | Earth and Planetary Science Letters |
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Language: | English |
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2009
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Online Access: | https://hdl.handle.net/1983/af141ee1-1c8b-49c2-9568-633429fad059 https://research-information.bris.ac.uk/en/publications/af141ee1-1c8b-49c2-9568-633429fad059 https://doi.org/10.1016/j.epsl.2008.11.026 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/af141ee1-1c8b-49c2-9568-633429fad059 2024-01-28T09:59:26+01:00 Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment Hendry, Katharine R. Rickaby, Rosalind E. M. Meredith, Michael P. Elderfield, Henry 2009-02-15 https://hdl.handle.net/1983/af141ee1-1c8b-49c2-9568-633429fad059 https://research-information.bris.ac.uk/en/publications/af141ee1-1c8b-49c2-9568-633429fad059 https://doi.org/10.1016/j.epsl.2008.11.026 eng eng info:eu-repo/semantics/restrictedAccess Hendry , K R , Rickaby , R E M , Meredith , M P & Elderfield , H 2009 , ' Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment ' , Earth and Planetary Science Letters , vol. 278 , no. 1-2 , pp. 67-77 . https://doi.org/10.1016/j.epsl.2008.11.026 CARBON LAST GLACIAL MAXIMUM carbonate ion PLANKTONIC-FORAMINIFERA SURFACE TEMPERATURE ATLANTIC SECTOR isotopes SOUTHERN-OCEAN sea-ice FORAMINIFERAL MG/CA RATIOS MARGUERITE BAY N. pachyderma WEDDELL SEA INTERGLACIAL CHANGES trace metals article 2009 ftubristolcris https://doi.org/10.1016/j.epsl.2008.11.026 2024-01-04T23:40:03Z The polar foraminifera Neogloboquadrina pachyderma (sinistral) dominates assemblages from the high latitude Southern Ocean, which plays a key role in determining past climate due to the tight linkage between Antarctic temperature and atmospheric CO(2). Here, we use N. pachyderma (s.) harvested from sediment traps off the West Antarctic Peninsula to construct a seasonal time series for the calibration of calcite proxies in a high latitude seasonal sea-ice environment where temperature is decoupled from other environmental parameters. We have used a combination of delta(18)O(CaCO3) and delta (13)(CaCO3) to decipher the calcification temperature and salinity, which reflect that N. pachyderma (s.) live in surface waters throughout the year, and at the ice-water interface in austral winter. Further, our results demonstrate that the uptake of trace metals into N. pachydenna (s.) calcite is influenced by secondary environmental conditions in addition to temperature during periods of sea-ice cover. We propose an elevated carbonate ion concentration at the ice-ater interface resulting from biological utilisation Of CO(2) could influence calcification in foraminifera. Our calculations suggest that for N. pachyderma (s.) Mg/Ca, Sr/Ca ratios and Li/Ca ratios are linear functions of calcification temperature and [CO(3)(2-)]. N. pachyderma (s.) Mg/Ca ratios exhibit temperature sensitivity similar to previous studies (similar to 10-20%/degrees C) and a sensitivity to [CO(3)(2-)] of similar to 1%/mu mol kg(-1). Sr/Ca ratios are less sensitive to environmental parameters, exhibiting similar to 5% increase/degrees C and similar to 0.5%/10 mu mol kg(-1). The relationship between Li/Ca ratios and both temperature and [CO(3)(2-)] is less significant with similar to 10% increase in Li/Ca ratio/degrees C and 10 mu mol kg(-1). We show how a multi-proxy approach could be used to constrain past high latitude surface water temperature and [CO(3)(2-)] (c) 2008 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Neogloboquadrina pachyderma Planktonic foraminifera Sea ice Southern Ocean Weddell Sea University of Bristol: Bristol Research Antarctic Antarctic Peninsula Austral Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Southern Ocean Weddell Weddell Sea Earth and Planetary Science Letters 278 1-2 67 77 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
CARBON LAST GLACIAL MAXIMUM carbonate ion PLANKTONIC-FORAMINIFERA SURFACE TEMPERATURE ATLANTIC SECTOR isotopes SOUTHERN-OCEAN sea-ice FORAMINIFERAL MG/CA RATIOS MARGUERITE BAY N. pachyderma WEDDELL SEA INTERGLACIAL CHANGES trace metals |
spellingShingle |
CARBON LAST GLACIAL MAXIMUM carbonate ion PLANKTONIC-FORAMINIFERA SURFACE TEMPERATURE ATLANTIC SECTOR isotopes SOUTHERN-OCEAN sea-ice FORAMINIFERAL MG/CA RATIOS MARGUERITE BAY N. pachyderma WEDDELL SEA INTERGLACIAL CHANGES trace metals Hendry, Katharine R. Rickaby, Rosalind E. M. Meredith, Michael P. Elderfield, Henry Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment |
topic_facet |
CARBON LAST GLACIAL MAXIMUM carbonate ion PLANKTONIC-FORAMINIFERA SURFACE TEMPERATURE ATLANTIC SECTOR isotopes SOUTHERN-OCEAN sea-ice FORAMINIFERAL MG/CA RATIOS MARGUERITE BAY N. pachyderma WEDDELL SEA INTERGLACIAL CHANGES trace metals |
description |
The polar foraminifera Neogloboquadrina pachyderma (sinistral) dominates assemblages from the high latitude Southern Ocean, which plays a key role in determining past climate due to the tight linkage between Antarctic temperature and atmospheric CO(2). Here, we use N. pachyderma (s.) harvested from sediment traps off the West Antarctic Peninsula to construct a seasonal time series for the calibration of calcite proxies in a high latitude seasonal sea-ice environment where temperature is decoupled from other environmental parameters. We have used a combination of delta(18)O(CaCO3) and delta (13)(CaCO3) to decipher the calcification temperature and salinity, which reflect that N. pachyderma (s.) live in surface waters throughout the year, and at the ice-water interface in austral winter. Further, our results demonstrate that the uptake of trace metals into N. pachydenna (s.) calcite is influenced by secondary environmental conditions in addition to temperature during periods of sea-ice cover. We propose an elevated carbonate ion concentration at the ice-ater interface resulting from biological utilisation Of CO(2) could influence calcification in foraminifera. Our calculations suggest that for N. pachyderma (s.) Mg/Ca, Sr/Ca ratios and Li/Ca ratios are linear functions of calcification temperature and [CO(3)(2-)]. N. pachyderma (s.) Mg/Ca ratios exhibit temperature sensitivity similar to previous studies (similar to 10-20%/degrees C) and a sensitivity to [CO(3)(2-)] of similar to 1%/mu mol kg(-1). Sr/Ca ratios are less sensitive to environmental parameters, exhibiting similar to 5% increase/degrees C and similar to 0.5%/10 mu mol kg(-1). The relationship between Li/Ca ratios and both temperature and [CO(3)(2-)] is less significant with similar to 10% increase in Li/Ca ratio/degrees C and 10 mu mol kg(-1). We show how a multi-proxy approach could be used to constrain past high latitude surface water temperature and [CO(3)(2-)] (c) 2008 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Hendry, Katharine R. Rickaby, Rosalind E. M. Meredith, Michael P. Elderfield, Henry |
author_facet |
Hendry, Katharine R. Rickaby, Rosalind E. M. Meredith, Michael P. Elderfield, Henry |
author_sort |
Hendry, Katharine R. |
title |
Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment |
title_short |
Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment |
title_full |
Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment |
title_fullStr |
Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment |
title_full_unstemmed |
Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment |
title_sort |
controls on stable isotope and trace metal uptake in neogloboquadrina pachyderma (sinistral) from an antarctic sea-ice environment |
publishDate |
2009 |
url |
https://hdl.handle.net/1983/af141ee1-1c8b-49c2-9568-633429fad059 https://research-information.bris.ac.uk/en/publications/af141ee1-1c8b-49c2-9568-633429fad059 https://doi.org/10.1016/j.epsl.2008.11.026 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Neogloboquadrina pachyderma Planktonic foraminifera Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Neogloboquadrina pachyderma Planktonic foraminifera Sea ice Southern Ocean Weddell Sea |
op_source |
Hendry , K R , Rickaby , R E M , Meredith , M P & Elderfield , H 2009 , ' Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment ' , Earth and Planetary Science Letters , vol. 278 , no. 1-2 , pp. 67-77 . https://doi.org/10.1016/j.epsl.2008.11.026 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2008.11.026 |
container_title |
Earth and Planetary Science Letters |
container_volume |
278 |
container_issue |
1-2 |
container_start_page |
67 |
op_container_end_page |
77 |
_version_ |
1789335788725469184 |