Size-dependent response of foraminiferal calcification to seawater carbonate chemistry
The response of the marine carbon cycle to changes in atmospheric CO 2 concentrations will be determined, in part, by the relative response of calcifying and non-calcifying organisms to global change. Planktonic foraminifera are responsible for a quarter or more of global carbonate production, there...
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ftcopernicus:oai:publications.copernicus.org:bg55527 2023-05-15T18:00:56+02:00 Size-dependent response of foraminiferal calcification to seawater carbonate chemistry Henehan, Michael J. Evans, David Shankle, Madison Burke, Janet E. Foster, Gavin L. Anagnostou, Eleni Chalk, Thomas B. Stewart, Joseph A. Alt, Claudia H. S. Durrant, Joseph Hull, Pincelli M. 2018-09-27 application/pdf https://doi.org/10.5194/bg-14-3287-2017 https://www.biogeosciences.net/14/3287/2017/ eng eng doi:10.5194/bg-14-3287-2017 https://www.biogeosciences.net/14/3287/2017/ eISSN: 1726-4189 Text 2018 ftcopernicus https://doi.org/10.5194/bg-14-3287-2017 2019-12-24T09:51:18Z The response of the marine carbon cycle to changes in atmospheric CO 2 concentrations will be determined, in part, by the relative response of calcifying and non-calcifying organisms to global change. Planktonic foraminifera are responsible for a quarter or more of global carbonate production, therefore understanding the sensitivity of calcification in these organisms to environmental change is critical. Despite this, there remains little consensus as to whether, or to what extent, chemical and physical factors affect foraminiferal calcification. To address this, we directly test the effect of multiple controls on calcification in culture experiments and core-top measurements of Globigerinoides ruber . We find that two factors, body size and the carbonate system, strongly influence calcification intensity in life, but that exposure to corrosive bottom waters can overprint this signal post mortem. Using a simple model for the addition of calcite through ontogeny, we show that variable body size between and within datasets could complicate studies that examine environmental controls on foraminiferal shell weight. In addition, we suggest that size could ultimately play a role in determining whether calcification will increase or decrease with acidification. Our models highlight that knowledge of the specific morphological and physiological mechanisms driving ontogenetic change in calcification in different species will be critical in predicting the response of foraminiferal calcification to future change in atmospheric p CO 2 . Text Planktonic foraminifera Copernicus Publications: E-Journals Biogeosciences 14 13 3287 3308 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
The response of the marine carbon cycle to changes in atmospheric CO 2 concentrations will be determined, in part, by the relative response of calcifying and non-calcifying organisms to global change. Planktonic foraminifera are responsible for a quarter or more of global carbonate production, therefore understanding the sensitivity of calcification in these organisms to environmental change is critical. Despite this, there remains little consensus as to whether, or to what extent, chemical and physical factors affect foraminiferal calcification. To address this, we directly test the effect of multiple controls on calcification in culture experiments and core-top measurements of Globigerinoides ruber . We find that two factors, body size and the carbonate system, strongly influence calcification intensity in life, but that exposure to corrosive bottom waters can overprint this signal post mortem. Using a simple model for the addition of calcite through ontogeny, we show that variable body size between and within datasets could complicate studies that examine environmental controls on foraminiferal shell weight. In addition, we suggest that size could ultimately play a role in determining whether calcification will increase or decrease with acidification. Our models highlight that knowledge of the specific morphological and physiological mechanisms driving ontogenetic change in calcification in different species will be critical in predicting the response of foraminiferal calcification to future change in atmospheric p CO 2 . |
format |
Text |
author |
Henehan, Michael J. Evans, David Shankle, Madison Burke, Janet E. Foster, Gavin L. Anagnostou, Eleni Chalk, Thomas B. Stewart, Joseph A. Alt, Claudia H. S. Durrant, Joseph Hull, Pincelli M. |
spellingShingle |
Henehan, Michael J. Evans, David Shankle, Madison Burke, Janet E. Foster, Gavin L. Anagnostou, Eleni Chalk, Thomas B. Stewart, Joseph A. Alt, Claudia H. S. Durrant, Joseph Hull, Pincelli M. Size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
author_facet |
Henehan, Michael J. Evans, David Shankle, Madison Burke, Janet E. Foster, Gavin L. Anagnostou, Eleni Chalk, Thomas B. Stewart, Joseph A. Alt, Claudia H. S. Durrant, Joseph Hull, Pincelli M. |
author_sort |
Henehan, Michael J. |
title |
Size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
title_short |
Size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
title_full |
Size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
title_fullStr |
Size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
title_full_unstemmed |
Size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
title_sort |
size-dependent response of foraminiferal calcification to seawater carbonate chemistry |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-14-3287-2017 https://www.biogeosciences.net/14/3287/2017/ |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-14-3287-2017 https://www.biogeosciences.net/14/3287/2017/ |
op_doi |
https://doi.org/10.5194/bg-14-3287-2017 |
container_title |
Biogeosciences |
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14 |
container_issue |
13 |
container_start_page |
3287 |
op_container_end_page |
3308 |
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1766170227104546816 |