PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building:
Abstract—Marine organisms must possess strategies enabling them to initiate calcite precipitation despite the unfavorable conditions for inorganic precipitation in surface seawater. These strategies are poorly understood. Here we compare two potential strategies of marine calcifyers to manipulate se...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.528.3384 2023-05-15T18:00:34+02:00 PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: Richard E. Zeebe Abhijit Sanyal The Pennsylvania State University CiteSeerX Archives 2001 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.528.3384 http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/ZeebeSanyalGCA02.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.528.3384 http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/ZeebeSanyalGCA02.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/ZeebeSanyalGCA02.pdf text 2001 ftciteseerx 2016-01-08T10:27:25Z Abstract—Marine organisms must possess strategies enabling them to initiate calcite precipitation despite the unfavorable conditions for inorganic precipitation in surface seawater. These strategies are poorly understood. Here we compare two potential strategies of marine calcifyers to manipulate seawater chemistry in order to initiate calcite precipitation: Removal of Mg2 and H ions from seawater solutions. An experimental setup was used to monitor the onset of inorganic precipitation on seed crystals as a function of the Mg2 concentration and pH in artificial seawater. We focused on precipitation rates typical for biogenic calcification in planktonic foraminifera (103 mol m2 h1) and time scales typical for the initiation of calcification in these organisms (minutes to hours). We find that the carbonate ion concentration has to increase by a factor of 13 when [Mg2] increases from 0 to 53 mmol kg1 in order to maintain a typical biogenic precipitation rate. Model calculations for the energy requirement for various scenarios of Mg2 and H removal including Ca2 exchange and CO2 diffusion are presented. We conclude that the more cost-effective strategy to initiate calcite precipitation in foraminifera is H removal, rather than Mg2 removal. Copyright © 2002 Elsevier Science Ltd 1. Text Planktonic foraminifera Unknown |
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Abstract—Marine organisms must possess strategies enabling them to initiate calcite precipitation despite the unfavorable conditions for inorganic precipitation in surface seawater. These strategies are poorly understood. Here we compare two potential strategies of marine calcifyers to manipulate seawater chemistry in order to initiate calcite precipitation: Removal of Mg2 and H ions from seawater solutions. An experimental setup was used to monitor the onset of inorganic precipitation on seed crystals as a function of the Mg2 concentration and pH in artificial seawater. We focused on precipitation rates typical for biogenic calcification in planktonic foraminifera (103 mol m2 h1) and time scales typical for the initiation of calcification in these organisms (minutes to hours). We find that the carbonate ion concentration has to increase by a factor of 13 when [Mg2] increases from 0 to 53 mmol kg1 in order to maintain a typical biogenic precipitation rate. Model calculations for the energy requirement for various scenarios of Mg2 and H removal including Ca2 exchange and CO2 diffusion are presented. We conclude that the more cost-effective strategy to initiate calcite precipitation in foraminifera is H removal, rather than Mg2 removal. Copyright © 2002 Elsevier Science Ltd 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Richard E. Zeebe Abhijit Sanyal |
spellingShingle |
Richard E. Zeebe Abhijit Sanyal PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: |
author_facet |
Richard E. Zeebe Abhijit Sanyal |
author_sort |
Richard E. Zeebe |
title |
PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: |
title_short |
PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: |
title_full |
PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: |
title_fullStr |
PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: |
title_full_unstemmed |
PII S0016-7037(01)00852-3 Comparison of two potential strategies of planktonic foraminifera for house building: |
title_sort |
pii s0016-7037(01)00852-3 comparison of two potential strategies of planktonic foraminifera for house building: |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.528.3384 http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/ZeebeSanyalGCA02.pdf |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/ZeebeSanyalGCA02.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.528.3384 http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/ZeebeSanyalGCA02.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766169719208935424 |