A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events
Coral reefs occupy only similar to 0.1 percent of the ocean's habitat, but are the most biologically diverse marine ecosystem. In recent decades, coral reefs have experienced a significant global decline due to a variety of causes, one of the major causes being widespread coral bleaching events...
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ftunivhannover:oai:www.repo.uni-hannover.de:123456789/1100 2023-07-16T04:00:20+02:00 A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events Dishon, G. Fisch, J. Horn, Ingo Kaczmarek, Karina Bijma, Jelle Gruber, D.F. Nir, O. Popovich, Y. Tchernov, D. 2015 http://www.repo.uni-hannover.de/handle/123456789/1100 https://doi.org/10.15488/1076 eng eng Göttingen : Copernicus GmbH DOI:https://doi.org/10.5194/bg-12-5677-2015 ISSN:1726-4170 ESSN:1726-4189 http://dx.doi.org/10.15488/1076 http://www.repo.uni-hannover.de/handle/123456789/1100 CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich Biogeosciences 12 (2015), Nr. 19 south china sea ocean acidification scleractinian corals climate-change surface-temperature porites corals caribbean sea seawater ph boric-acid reef ddc:550 status-type:publishedVersion doc-type:Article doc-type:Text 2015 ftunivhannover https://doi.org/10.15488/107610.5194/bg-12-5677-2015 2023-06-28T10:36:06Z Coral reefs occupy only similar to 0.1 percent of the ocean's habitat, but are the most biologically diverse marine ecosystem. In recent decades, coral reefs have experienced a significant global decline due to a variety of causes, one of the major causes being widespread coral bleaching events. During bleaching, the coral expels its symbiotic algae, thereby losing its main source of nutrition generally obtained through photosynthesis. While recent coral bleaching events have been extensively investigated, there is no scientific data on historical coral bleaching prior to 1979. In this study, we employ high-resolution femtosecond Laser Ablation Multiple Collector Inductively Coupled Plasma Mass Spectrometry (LA-MC-ICP-MS) to demonstrate a distinct biologically induced decline of boron (B) isotopic composition (delta B-11) as a result of coral bleaching. These findings and methodology offer a new use for a previously developed isotopic proxy to reconstruct paleo-coral bleaching events. Based on a literature review of published delta B-11 data and our recorded vital effect of coral bleaching on the delta B-11 signal, we also describe at least two possible coral bleaching events since the Last Glacial Maximum. The implementation of this bleaching proxy holds the potential of identifying occurrences of coral bleaching throughout the geological record. A deeper temporal view of coral bleaching will enable scientists to determine if it occurred in the past during times of environmental change and what outcome it may have had on coral population structure. Understanding the frequency of bleaching events is also critical for determining the relationship between natural and anthropogenic causes of these events. BMBF/03V0956 National Science Foundation/0920572 SBM Minerva foundation Article in Journal/Newspaper Ocean acidification Institutional Repository of Leibniz Universität Hannover |
institution |
Open Polar |
collection |
Institutional Repository of Leibniz Universität Hannover |
op_collection_id |
ftunivhannover |
language |
English |
topic |
south china sea ocean acidification scleractinian corals climate-change surface-temperature porites corals caribbean sea seawater ph boric-acid reef ddc:550 |
spellingShingle |
south china sea ocean acidification scleractinian corals climate-change surface-temperature porites corals caribbean sea seawater ph boric-acid reef ddc:550 Dishon, G. Fisch, J. Horn, Ingo Kaczmarek, Karina Bijma, Jelle Gruber, D.F. Nir, O. Popovich, Y. Tchernov, D. A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
topic_facet |
south china sea ocean acidification scleractinian corals climate-change surface-temperature porites corals caribbean sea seawater ph boric-acid reef ddc:550 |
description |
Coral reefs occupy only similar to 0.1 percent of the ocean's habitat, but are the most biologically diverse marine ecosystem. In recent decades, coral reefs have experienced a significant global decline due to a variety of causes, one of the major causes being widespread coral bleaching events. During bleaching, the coral expels its symbiotic algae, thereby losing its main source of nutrition generally obtained through photosynthesis. While recent coral bleaching events have been extensively investigated, there is no scientific data on historical coral bleaching prior to 1979. In this study, we employ high-resolution femtosecond Laser Ablation Multiple Collector Inductively Coupled Plasma Mass Spectrometry (LA-MC-ICP-MS) to demonstrate a distinct biologically induced decline of boron (B) isotopic composition (delta B-11) as a result of coral bleaching. These findings and methodology offer a new use for a previously developed isotopic proxy to reconstruct paleo-coral bleaching events. Based on a literature review of published delta B-11 data and our recorded vital effect of coral bleaching on the delta B-11 signal, we also describe at least two possible coral bleaching events since the Last Glacial Maximum. The implementation of this bleaching proxy holds the potential of identifying occurrences of coral bleaching throughout the geological record. A deeper temporal view of coral bleaching will enable scientists to determine if it occurred in the past during times of environmental change and what outcome it may have had on coral population structure. Understanding the frequency of bleaching events is also critical for determining the relationship between natural and anthropogenic causes of these events. BMBF/03V0956 National Science Foundation/0920572 SBM Minerva foundation |
format |
Article in Journal/Newspaper |
author |
Dishon, G. Fisch, J. Horn, Ingo Kaczmarek, Karina Bijma, Jelle Gruber, D.F. Nir, O. Popovich, Y. Tchernov, D. |
author_facet |
Dishon, G. Fisch, J. Horn, Ingo Kaczmarek, Karina Bijma, Jelle Gruber, D.F. Nir, O. Popovich, Y. Tchernov, D. |
author_sort |
Dishon, G. |
title |
A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
title_short |
A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
title_full |
A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
title_fullStr |
A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
title_full_unstemmed |
A novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
title_sort |
novel paleo-bleaching proxy using boron isotopes and high-resolution laser ablation to reconstruct coral bleaching events |
publisher |
Göttingen : Copernicus GmbH |
publishDate |
2015 |
url |
http://www.repo.uni-hannover.de/handle/123456789/1100 https://doi.org/10.15488/1076 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences 12 (2015), Nr. 19 |
op_relation |
DOI:https://doi.org/10.5194/bg-12-5677-2015 ISSN:1726-4170 ESSN:1726-4189 http://dx.doi.org/10.15488/1076 http://www.repo.uni-hannover.de/handle/123456789/1100 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich |
op_doi |
https://doi.org/10.15488/107610.5194/bg-12-5677-2015 |
_version_ |
1771549005264715776 |