Coccolithophores and calcite saturation state in the Baltic and Black Seas
The Baltic and Black Seas are both brackish, that is to say both have salinities intermediate between freshwater and seawater. The coccolithophore Emiliania huxleyi is abundant in one, the Black Sea, but absent from the other, the Baltic Sea. Here we present summertime coccolithophore measurements c...
Published in: | Biogeosciences |
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2008
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031650 2023-05-15T17:51:08+02:00 Coccolithophores and calcite saturation state in the Baltic and Black Seas Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, U. 2008-04 electronic https://doi.org/10.5194/bg-5-485-2008 https://noa.gwlb.de/receive/cop_mods_00031650 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031604/bg-5-485-2008.pdf https://bg.copernicus.org/articles/5/485/2008/bg-5-485-2008.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-5-485-2008 https://noa.gwlb.de/receive/cop_mods_00031650 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031604/bg-5-485-2008.pdf https://bg.copernicus.org/articles/5/485/2008/bg-5-485-2008.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2008 ftnonlinearchiv https://doi.org/10.5194/bg-5-485-2008 2022-02-08T22:46:37Z The Baltic and Black Seas are both brackish, that is to say both have salinities intermediate between freshwater and seawater. The coccolithophore Emiliania huxleyi is abundant in one, the Black Sea, but absent from the other, the Baltic Sea. Here we present summertime coccolithophore measurements confirming this difference, as well as data on the calcium carbonate saturation state of the Baltic Sea. We find that the Baltic Sea becomes undersaturated (or nearly so) in winter, with respect to both the aragonite and calcite mineral forms of CaCO3. Data for the Black Sea are more limited, but it appears to remain strongly supersaturated year-round. The absence of E. huxleyi from the Baltic Sea could therefore potentially be explained by dissolution of their coccoliths in winter, suggesting that minimum annual (wintertime) saturation states could be most important in determining future ocean acidification impacts. In addition to this potential importance of winter saturation state, alternative explanations are also possible, either related to differences in salinity or else to differences in silicate concentrations. Article in Journal/Newspaper Ocean acidification Niedersächsisches Online-Archiv NOA Biogeosciences 5 2 485 494 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, U. Coccolithophores and calcite saturation state in the Baltic and Black Seas |
topic_facet |
article Verlagsveröffentlichung |
description |
The Baltic and Black Seas are both brackish, that is to say both have salinities intermediate between freshwater and seawater. The coccolithophore Emiliania huxleyi is abundant in one, the Black Sea, but absent from the other, the Baltic Sea. Here we present summertime coccolithophore measurements confirming this difference, as well as data on the calcium carbonate saturation state of the Baltic Sea. We find that the Baltic Sea becomes undersaturated (or nearly so) in winter, with respect to both the aragonite and calcite mineral forms of CaCO3. Data for the Black Sea are more limited, but it appears to remain strongly supersaturated year-round. The absence of E. huxleyi from the Baltic Sea could therefore potentially be explained by dissolution of their coccoliths in winter, suggesting that minimum annual (wintertime) saturation states could be most important in determining future ocean acidification impacts. In addition to this potential importance of winter saturation state, alternative explanations are also possible, either related to differences in salinity or else to differences in silicate concentrations. |
format |
Article in Journal/Newspaper |
author |
Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, U. |
author_facet |
Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, U. |
author_sort |
Tyrrell, T. |
title |
Coccolithophores and calcite saturation state in the Baltic and Black Seas |
title_short |
Coccolithophores and calcite saturation state in the Baltic and Black Seas |
title_full |
Coccolithophores and calcite saturation state in the Baltic and Black Seas |
title_fullStr |
Coccolithophores and calcite saturation state in the Baltic and Black Seas |
title_full_unstemmed |
Coccolithophores and calcite saturation state in the Baltic and Black Seas |
title_sort |
coccolithophores and calcite saturation state in the baltic and black seas |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/bg-5-485-2008 https://noa.gwlb.de/receive/cop_mods_00031650 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031604/bg-5-485-2008.pdf https://bg.copernicus.org/articles/5/485/2008/bg-5-485-2008.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-5-485-2008 https://noa.gwlb.de/receive/cop_mods_00031650 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031604/bg-5-485-2008.pdf https://bg.copernicus.org/articles/5/485/2008/bg-5-485-2008.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-5-485-2008 |
container_title |
Biogeosciences |
container_volume |
5 |
container_issue |
2 |
container_start_page |
485 |
op_container_end_page |
494 |
_version_ |
1766158175279513600 |