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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Copernicus Publications (EGU)
2008
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Online Access: | https://oceanrep.geomar.de/id/eprint/31323/ https://oceanrep.geomar.de/id/eprint/31323/1/Coccolithophores%20and%20calcite.pdf https://doi.org/10.5194/bg-5-485-2008 |
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ftoceanrep:oai:oceanrep.geomar.de:31323 2023-05-15T17:51:10+02:00 Coccolithophores and calcite saturation state in the Baltic and Black Seas Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, Ulf 2008 text https://oceanrep.geomar.de/id/eprint/31323/ https://oceanrep.geomar.de/id/eprint/31323/1/Coccolithophores%20and%20calcite.pdf https://doi.org/10.5194/bg-5-485-2008 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/31323/1/Coccolithophores%20and%20calcite.pdf Tyrrell, T., Schneider, B., Charalampopoulou, A. and Riebesell, U. (2008) Coccolithophores and calcite saturation state in the Baltic and Black Seas. Open Access Biogeosciences (BG), 5 (2). pp. 485-494. DOI 10.5194/bg-5-485-2008 <https://doi.org/10.5194/bg-5-485-2008>. doi:10.5194/bg-5-485-2008 cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.5194/bg-5-485-2008 2023-04-07T15:23:32Z 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 OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Biogeosciences 5 2 485 494 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
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, Ulf |
spellingShingle |
Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, Ulf Coccolithophores and calcite saturation state in the Baltic and Black Seas |
author_facet |
Tyrrell, T. Schneider, B. Charalampopoulou, A. Riebesell, Ulf |
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 (EGU) |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/31323/ https://oceanrep.geomar.de/id/eprint/31323/1/Coccolithophores%20and%20calcite.pdf https://doi.org/10.5194/bg-5-485-2008 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/31323/1/Coccolithophores%20and%20calcite.pdf Tyrrell, T., Schneider, B., Charalampopoulou, A. and Riebesell, U. (2008) Coccolithophores and calcite saturation state in the Baltic and Black Seas. Open Access Biogeosciences (BG), 5 (2). pp. 485-494. DOI 10.5194/bg-5-485-2008 <https://doi.org/10.5194/bg-5-485-2008>. doi:10.5194/bg-5-485-2008 |
op_rights |
cc_by_3.0 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 |
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1766158232663883776 |