A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral
Funding: SIMS analyses were supported by the Natural Environment Research Council, UK (IMF689/0519). Coral skeletal boron geochemistry offers opportunities to probe the pH of the calcification media (pHCM) of modern and fossil specimens, to estimate past changes in seawater pH and to explore the bio...
Published in: | Geochimica et Cosmochimica Acta |
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Online Access: | http://hdl.handle.net/10023/27954 https://doi.org/10.1016/j.gca.2023.07.005 |
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/27954 2023-07-30T04:06:06+02:00 A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral Allison, Nicola Venn, Alex Tambutte, Sylvie Tambutte, Eric Wilckens, Frederike Kasemann, Simone Edinburgh Ion Microprobe Facility (EIMF) NERC University of St Andrews. School of Earth & Environmental Sciences University of St Andrews. Marine Alliance for Science & Technology Scotland University of St Andrews. Scottish Oceans Institute University of St Andrews. St Andrews Isotope Geochemistry 2023-07-13T11:30:21Z application/pdf http://hdl.handle.net/10023/27954 https://doi.org/10.1016/j.gca.2023.07.005 eng eng Geochimica et Cosmochimica Acta Allison , N , Venn , A , Tambutte , S , Tambutte , E , Wilckens , F , Kasemann , S & Edinburgh Ion Microprobe Facility (EIMF) 2023 , ' A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral ' , Geochimica et Cosmochimica Acta . https://doi.org/10.1016/j.gca.2023.07.005 0016-7037 PURE: 289918191 PURE UUID: 0ed7a14d-7fbc-466d-97c9-f6b75a7e19c2 ORCID: /0000-0003-3720-1917/work/138747527 http://hdl.handle.net/10023/27954 https://doi.org/10.1016/j.gca.2023.07.005 Copyright © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). DAS SDG 14 - Life Below Water MCP Journal article 2023 ftstandrewserep https://doi.org/10.1016/j.gca.2023.07.005 2023-07-20T22:29:30Z Funding: SIMS analyses were supported by the Natural Environment Research Council, UK (IMF689/0519). Coral skeletal boron geochemistry offers opportunities to probe the pH of the calcification media (pHCM) of modern and fossil specimens, to estimate past changes in seawater pH and to explore the biomineralisation response to future ocean acidification. In this research we grew 2 Stylophora pistillata coral microcolonies over glass coverslips to allow analysis of the pH sensitive dye SNARF-1, in the extracellular calcification medium at the growing edge of colonies where the first aragonite crystals are formed, under both light and dark conditions. We use secondary ion mass spectrometry (SIMS) to measure the boron isotopic composition (δ11B) of the skeleton close to the growth edge after 2 to 3 days of additional calcification had enlarged the crystals until they joined, generating a continuous sheet of aragonite. Mean skeletal δ11B-pHCM estimates are higher than those of by SNARF-1 by 0.35 to 0.44 pH units. These differences either reflect real variations in the pH of the calcification media associated with each measurement technique or indicate other changes in the biomineralisation process which influence skeletal δ11B. SNARF-1 measures directly the pH of the extracellular calcification medium while skeletal δ11B analyses aragonite potentially formed via both extracellular and intracellular biomineralisation pathways. Analysis of a third coral specimen, also growing on a glass slide but with a 5 cm long branch, indicated good agreement between the δ11B value of the apex of the branch and the skeletal growth edge. The tissues overlying both these regions were transparent indicating they had low symbiont densities. This suggests that the biomineralisation process is broadly comparable between these sites and that studies growing corals over glass slides/coverslips provide representative data for the colony apex. Publisher PDF Peer reviewed Article in Journal/Newspaper Ocean acidification University of St Andrews: Digital Research Repository Geochimica et Cosmochimica Acta 355 184 194 |
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Open Polar |
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University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
DAS SDG 14 - Life Below Water MCP |
spellingShingle |
DAS SDG 14 - Life Below Water MCP Allison, Nicola Venn, Alex Tambutte, Sylvie Tambutte, Eric Wilckens, Frederike Kasemann, Simone Edinburgh Ion Microprobe Facility (EIMF) A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral |
topic_facet |
DAS SDG 14 - Life Below Water MCP |
description |
Funding: SIMS analyses were supported by the Natural Environment Research Council, UK (IMF689/0519). Coral skeletal boron geochemistry offers opportunities to probe the pH of the calcification media (pHCM) of modern and fossil specimens, to estimate past changes in seawater pH and to explore the biomineralisation response to future ocean acidification. In this research we grew 2 Stylophora pistillata coral microcolonies over glass coverslips to allow analysis of the pH sensitive dye SNARF-1, in the extracellular calcification medium at the growing edge of colonies where the first aragonite crystals are formed, under both light and dark conditions. We use secondary ion mass spectrometry (SIMS) to measure the boron isotopic composition (δ11B) of the skeleton close to the growth edge after 2 to 3 days of additional calcification had enlarged the crystals until they joined, generating a continuous sheet of aragonite. Mean skeletal δ11B-pHCM estimates are higher than those of by SNARF-1 by 0.35 to 0.44 pH units. These differences either reflect real variations in the pH of the calcification media associated with each measurement technique or indicate other changes in the biomineralisation process which influence skeletal δ11B. SNARF-1 measures directly the pH of the extracellular calcification medium while skeletal δ11B analyses aragonite potentially formed via both extracellular and intracellular biomineralisation pathways. Analysis of a third coral specimen, also growing on a glass slide but with a 5 cm long branch, indicated good agreement between the δ11B value of the apex of the branch and the skeletal growth edge. The tissues overlying both these regions were transparent indicating they had low symbiont densities. This suggests that the biomineralisation process is broadly comparable between these sites and that studies growing corals over glass slides/coverslips provide representative data for the colony apex. Publisher PDF Peer reviewed |
author2 |
NERC University of St Andrews. School of Earth & Environmental Sciences University of St Andrews. Marine Alliance for Science & Technology Scotland University of St Andrews. Scottish Oceans Institute University of St Andrews. St Andrews Isotope Geochemistry |
format |
Article in Journal/Newspaper |
author |
Allison, Nicola Venn, Alex Tambutte, Sylvie Tambutte, Eric Wilckens, Frederike Kasemann, Simone Edinburgh Ion Microprobe Facility (EIMF) |
author_facet |
Allison, Nicola Venn, Alex Tambutte, Sylvie Tambutte, Eric Wilckens, Frederike Kasemann, Simone Edinburgh Ion Microprobe Facility (EIMF) |
author_sort |
Allison, Nicola |
title |
A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral |
title_short |
A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral |
title_full |
A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral |
title_fullStr |
A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral |
title_full_unstemmed |
A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral |
title_sort |
comparison of snarf-1 and skeletal δ11b estimates of calcification media ph in tropical coral |
publishDate |
2023 |
url |
http://hdl.handle.net/10023/27954 https://doi.org/10.1016/j.gca.2023.07.005 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Geochimica et Cosmochimica Acta Allison , N , Venn , A , Tambutte , S , Tambutte , E , Wilckens , F , Kasemann , S & Edinburgh Ion Microprobe Facility (EIMF) 2023 , ' A comparison of SNARF-1 and skeletal δ11B estimates of calcification media pH in tropical coral ' , Geochimica et Cosmochimica Acta . https://doi.org/10.1016/j.gca.2023.07.005 0016-7037 PURE: 289918191 PURE UUID: 0ed7a14d-7fbc-466d-97c9-f6b75a7e19c2 ORCID: /0000-0003-3720-1917/work/138747527 http://hdl.handle.net/10023/27954 https://doi.org/10.1016/j.gca.2023.07.005 |
op_rights |
Copyright © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
op_doi |
https://doi.org/10.1016/j.gca.2023.07.005 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
355 |
container_start_page |
184 |
op_container_end_page |
194 |
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1772818518616571904 |