Skeletal mineralogy of coral recruits under high temperature and pCO2
Aragonite, which is the polymorph of CaCO3 precipitated by modern corals during skeletal formation, has a higher solubility than the more stable polymorph calcite. This higher solubility may leave animals that produce aragonitic skeletons more vulnerable to anthropogenic ocean acidification. It is t...
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Copernicus Publications
2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00013792 2023-05-15T17:50:37+02:00 Skeletal mineralogy of coral recruits under high temperature and pCO2 Foster, T. Clode, P. L. 2016-03 electronic https://doi.org/10.5194/bg-13-1717-2016 https://noa.gwlb.de/receive/cop_mods_00013792 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013748/bg-13-1717-2016.pdf https://bg.copernicus.org/articles/13/1717/2016/bg-13-1717-2016.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-13-1717-2016 https://noa.gwlb.de/receive/cop_mods_00013792 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013748/bg-13-1717-2016.pdf https://bg.copernicus.org/articles/13/1717/2016/bg-13-1717-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/bg-13-1717-2016 2022-02-08T22:55:25Z Aragonite, which is the polymorph of CaCO3 precipitated by modern corals during skeletal formation, has a higher solubility than the more stable polymorph calcite. This higher solubility may leave animals that produce aragonitic skeletons more vulnerable to anthropogenic ocean acidification. It is therefore important to determine whether scleractinian corals have the plasticity to adapt and produce calcite in their skeletons in response to changing environmental conditions. Both high pCO2 and lower Mg ∕ Ca ratios in seawater are thought to have driven changes in the skeletal mineralogy of major marine calcifiers in the past ∼ 540 Ma. Experimentally reduced Mg ∕ Ca ratios in ambient seawater have been shown to induce some calcite precipitation in both adult and newly settled modern corals; however, the impact of high pCO2 on the mineralogy of recruits is unknown. Here we determined the skeletal mineralogy of 1-month-old Acropora spicifera coral recruits grown under high temperature (+3 °C) and pCO2 (∼ 900 µatm) conditions, using X-ray diffraction and Raman spectroscopy. We found that newly settled coral recruits produced entirely aragonitic skeletons regardless of the treatment. Our results show that elevated pCO2 alone is unlikely to drive changes in the skeletal mineralogy of young corals. Not having an ability to switch from aragonite to calcite precipitation may leave corals and ultimately coral reef ecosystems more susceptible to predicted ocean acidification. An important area for prospective research would be the investigation of the combined impact of high pCO2 and reduced Mg ∕ Ca ratio on coral skeletal mineralogy. Article in Journal/Newspaper Ocean acidification Niedersächsisches Online-Archiv NOA Biogeosciences 13 5 1717 1722 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Foster, T. Clode, P. L. Skeletal mineralogy of coral recruits under high temperature and pCO2 |
topic_facet |
article Verlagsveröffentlichung |
description |
Aragonite, which is the polymorph of CaCO3 precipitated by modern corals during skeletal formation, has a higher solubility than the more stable polymorph calcite. This higher solubility may leave animals that produce aragonitic skeletons more vulnerable to anthropogenic ocean acidification. It is therefore important to determine whether scleractinian corals have the plasticity to adapt and produce calcite in their skeletons in response to changing environmental conditions. Both high pCO2 and lower Mg ∕ Ca ratios in seawater are thought to have driven changes in the skeletal mineralogy of major marine calcifiers in the past ∼ 540 Ma. Experimentally reduced Mg ∕ Ca ratios in ambient seawater have been shown to induce some calcite precipitation in both adult and newly settled modern corals; however, the impact of high pCO2 on the mineralogy of recruits is unknown. Here we determined the skeletal mineralogy of 1-month-old Acropora spicifera coral recruits grown under high temperature (+3 °C) and pCO2 (∼ 900 µatm) conditions, using X-ray diffraction and Raman spectroscopy. We found that newly settled coral recruits produced entirely aragonitic skeletons regardless of the treatment. Our results show that elevated pCO2 alone is unlikely to drive changes in the skeletal mineralogy of young corals. Not having an ability to switch from aragonite to calcite precipitation may leave corals and ultimately coral reef ecosystems more susceptible to predicted ocean acidification. An important area for prospective research would be the investigation of the combined impact of high pCO2 and reduced Mg ∕ Ca ratio on coral skeletal mineralogy. |
format |
Article in Journal/Newspaper |
author |
Foster, T. Clode, P. L. |
author_facet |
Foster, T. Clode, P. L. |
author_sort |
Foster, T. |
title |
Skeletal mineralogy of coral recruits under high temperature and pCO2 |
title_short |
Skeletal mineralogy of coral recruits under high temperature and pCO2 |
title_full |
Skeletal mineralogy of coral recruits under high temperature and pCO2 |
title_fullStr |
Skeletal mineralogy of coral recruits under high temperature and pCO2 |
title_full_unstemmed |
Skeletal mineralogy of coral recruits under high temperature and pCO2 |
title_sort |
skeletal mineralogy of coral recruits under high temperature and pco2 |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/bg-13-1717-2016 https://noa.gwlb.de/receive/cop_mods_00013792 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013748/bg-13-1717-2016.pdf https://bg.copernicus.org/articles/13/1717/2016/bg-13-1717-2016.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-13-1717-2016 https://noa.gwlb.de/receive/cop_mods_00013792 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013748/bg-13-1717-2016.pdf https://bg.copernicus.org/articles/13/1717/2016/bg-13-1717-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-13-1717-2016 |
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Biogeosciences |
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13 |
container_issue |
5 |
container_start_page |
1717 |
op_container_end_page |
1722 |
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1766157464187699200 |