Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives.
A method for high-throughput boron purification coupled with total evaporation thermal ionization mass spectrometry was developed to allow investigation of how the seawater pH varies spatially and temporally with respect to elevated atmospheric carbon dioxide level, and the impacts of ocean acidific...
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ftumdeepblue:oai:deepblue.lib.umich.edu:2027.42/113507 2023-08-20T04:05:05+02:00 Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. Liu, Yi-Wei Aciego, Sarah M. Olson, Terese M. Wanamaker Jr., Alan David Blum, Joel D. 2015 application/pdf http://hdl.handle.net/2027.42/113507 en_US eng http://hdl.handle.net/2027.42/113507 Boron isotopes Unconventional biogenic carbonate Ocean acidification Geology and Earth Sciences Science Thesis 2015 ftumdeepblue 2023-07-31T20:32:26Z A method for high-throughput boron purification coupled with total evaporation thermal ionization mass spectrometry was developed to allow investigation of how the seawater pH varies spatially and temporally with respect to elevated atmospheric carbon dioxide level, and the impacts of ocean acidification on marine organisms. Using this method, we are able to measure boron isotopic composition in carbonate with less then 1 ng of boron in the sample and further reconstruct calcification pH for biogenic carbonate as a biogeochemical archive. In this dissertation, we applied this method to investigate how environmental factors influence the boron incorporation in two unconventional biogenic carbonate archives: aragonite bivalve shells and calcite coccolithophores. In the bivalve shell Arctica islandica study, we found that shells regulate their calcification pH, and that boron incorporation into the shell has a potential temperature dependence. Therefore, a culture experiment with fixed temperature and salinity, but variable pH is required to evaluate the species-specific relationship between boron and ambient seawater pH and the potential use of this proxy in this species. In the coccolithophorid species Pleurochrysis carterae study, we observed an ability for this organisms to adapt to ocean acidification. The boron isotopic composition in the coccoliths suggests it regulates vesicle pH to sustain calcification with decreasing environmental pH. With other geochemical constraints including the particulate inorganic carbon to particulate organic carbon ratio (PIC/POC) and stable isotopic compositions we found this coccolitophorid species is likely to change usage of inorganic carbon species from HCO3- to CO2(aq) as ambient medium pH decreases. This dissertation work provides insights on the diverse response of marine organisms to ocean acidification. Extending work on boron to pH calibration in unconventional species will help reconstruct seawater pH records over a wide geographic range through geologic time. ... Thesis Arctica islandica Ocean acidification University of Michigan: Deep Blue |
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Open Polar |
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University of Michigan: Deep Blue |
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ftumdeepblue |
language |
English |
topic |
Boron isotopes Unconventional biogenic carbonate Ocean acidification Geology and Earth Sciences Science |
spellingShingle |
Boron isotopes Unconventional biogenic carbonate Ocean acidification Geology and Earth Sciences Science Liu, Yi-Wei Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. |
topic_facet |
Boron isotopes Unconventional biogenic carbonate Ocean acidification Geology and Earth Sciences Science |
description |
A method for high-throughput boron purification coupled with total evaporation thermal ionization mass spectrometry was developed to allow investigation of how the seawater pH varies spatially and temporally with respect to elevated atmospheric carbon dioxide level, and the impacts of ocean acidification on marine organisms. Using this method, we are able to measure boron isotopic composition in carbonate with less then 1 ng of boron in the sample and further reconstruct calcification pH for biogenic carbonate as a biogeochemical archive. In this dissertation, we applied this method to investigate how environmental factors influence the boron incorporation in two unconventional biogenic carbonate archives: aragonite bivalve shells and calcite coccolithophores. In the bivalve shell Arctica islandica study, we found that shells regulate their calcification pH, and that boron incorporation into the shell has a potential temperature dependence. Therefore, a culture experiment with fixed temperature and salinity, but variable pH is required to evaluate the species-specific relationship between boron and ambient seawater pH and the potential use of this proxy in this species. In the coccolithophorid species Pleurochrysis carterae study, we observed an ability for this organisms to adapt to ocean acidification. The boron isotopic composition in the coccoliths suggests it regulates vesicle pH to sustain calcification with decreasing environmental pH. With other geochemical constraints including the particulate inorganic carbon to particulate organic carbon ratio (PIC/POC) and stable isotopic compositions we found this coccolitophorid species is likely to change usage of inorganic carbon species from HCO3- to CO2(aq) as ambient medium pH decreases. This dissertation work provides insights on the diverse response of marine organisms to ocean acidification. Extending work on boron to pH calibration in unconventional species will help reconstruct seawater pH records over a wide geographic range through geologic time. ... |
author2 |
Aciego, Sarah M. Olson, Terese M. Wanamaker Jr., Alan David Blum, Joel D. |
format |
Thesis |
author |
Liu, Yi-Wei |
author_facet |
Liu, Yi-Wei |
author_sort |
Liu, Yi-Wei |
title |
Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. |
title_short |
Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. |
title_full |
Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. |
title_fullStr |
Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. |
title_full_unstemmed |
Environmental Controls on 11B in Unconventional Biogenic Carbonate Archives. |
title_sort |
environmental controls on 11b in unconventional biogenic carbonate archives. |
publishDate |
2015 |
url |
http://hdl.handle.net/2027.42/113507 |
genre |
Arctica islandica Ocean acidification |
genre_facet |
Arctica islandica Ocean acidification |
op_relation |
http://hdl.handle.net/2027.42/113507 |
_version_ |
1774715513521307648 |