Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida
Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic and planktonic foraminifera are responsible for a large amount of the globally precipitated calcium c...
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ftdoajarticles:oai:doaj.org/article:6fc851afcf0f4ee6bb0c54b20d86e743 2023-05-15T17:51:42+02:00 Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida D. Dissard G. Nehrke G. J. Reichart J. Bijma 2010-01-01T00:00:00Z https://doi.org/10.5194/bg-7-81-2010 https://doaj.org/article/6fc851afcf0f4ee6bb0c54b20d86e743 EN eng Copernicus Publications http://www.biogeosciences.net/7/81/2010/bg-7-81-2010.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-7-81-2010 https://doaj.org/article/6fc851afcf0f4ee6bb0c54b20d86e743 Biogeosciences, Vol 7, Iss 1, Pp 81-93 (2010) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2010 ftdoajarticles https://doi.org/10.5194/bg-7-81-2010 2022-12-31T14:36:03Z Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic and planktonic foraminifera are responsible for a large amount of the globally precipitated calcium carbonate. Hence, their response to an acidifying ocean may have important consequences for future inorganic carbon cycling. To assess the sensitivity of benthic foraminifera to changing carbon dioxide levels and subsequent alteration in seawater carbonate chemistry, we cultured specimens of the shallow water species Ammonia tepida at two concentrations of atmospheric CO 2 (230 and 1900 ppmv) and two temperatures (10 °C and 15 °C). Shell weights and elemental compositions were determined. Impact of high and low p CO 2 on elemental composition are compared with results of a previous experiment were specimens were grown under ambient conditions (380 ppvm, no shell weight measurements of specimen grown under ambient conditions are, however, available). Results indicate that shell weights decrease with decreasing [CO 3 2− ], although calcification was observed even in the presence of calcium carbonate under-saturation, and also decrease with increasing temperature. Thus both warming and ocean acidification may act to decrease shell weights in the future. Changes in [CO 3 2− ] or total dissolved inorganic carbon do not affect the Mg distribution coefficient. On the contrary, Sr incorporation is enhanced under increasing [CO 3 2− ]. Implications of these results for the paleoceanographic application of foraminifera are discussed. Article in Journal/Newspaper Ocean acidification Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles Biogeosciences 7 1 81 93 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 D. Dissard G. Nehrke G. J. Reichart J. Bijma Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic and planktonic foraminifera are responsible for a large amount of the globally precipitated calcium carbonate. Hence, their response to an acidifying ocean may have important consequences for future inorganic carbon cycling. To assess the sensitivity of benthic foraminifera to changing carbon dioxide levels and subsequent alteration in seawater carbonate chemistry, we cultured specimens of the shallow water species Ammonia tepida at two concentrations of atmospheric CO 2 (230 and 1900 ppmv) and two temperatures (10 °C and 15 °C). Shell weights and elemental compositions were determined. Impact of high and low p CO 2 on elemental composition are compared with results of a previous experiment were specimens were grown under ambient conditions (380 ppvm, no shell weight measurements of specimen grown under ambient conditions are, however, available). Results indicate that shell weights decrease with decreasing [CO 3 2− ], although calcification was observed even in the presence of calcium carbonate under-saturation, and also decrease with increasing temperature. Thus both warming and ocean acidification may act to decrease shell weights in the future. Changes in [CO 3 2− ] or total dissolved inorganic carbon do not affect the Mg distribution coefficient. On the contrary, Sr incorporation is enhanced under increasing [CO 3 2− ]. Implications of these results for the paleoceanographic application of foraminifera are discussed. |
format |
Article in Journal/Newspaper |
author |
D. Dissard G. Nehrke G. J. Reichart J. Bijma |
author_facet |
D. Dissard G. Nehrke G. J. Reichart J. Bijma |
author_sort |
D. Dissard |
title |
Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida |
title_short |
Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida |
title_full |
Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida |
title_fullStr |
Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida |
title_full_unstemmed |
Impact of seawater p CO 2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida |
title_sort |
impact of seawater p co 2 on calcification and mg/ca and sr/ca ratios in benthic foraminifera calcite: results from culturing experiments with ammonia tepida |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/bg-7-81-2010 https://doaj.org/article/6fc851afcf0f4ee6bb0c54b20d86e743 |
genre |
Ocean acidification Planktonic foraminifera |
genre_facet |
Ocean acidification Planktonic foraminifera |
op_source |
Biogeosciences, Vol 7, Iss 1, Pp 81-93 (2010) |
op_relation |
http://www.biogeosciences.net/7/81/2010/bg-7-81-2010.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-7-81-2010 https://doaj.org/article/6fc851afcf0f4ee6bb0c54b20d86e743 |
op_doi |
https://doi.org/10.5194/bg-7-81-2010 |
container_title |
Biogeosciences |
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7 |
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1 |
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81 |
op_container_end_page |
93 |
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1766158918446219264 |