Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range
Although coccolithophore physiological responses to CO 2 -induced changes in seawater carbonate chemistry have been widely studied in the past, there is limited knowledge on the variability of physiological responses between populations from different areas. In the present study, we investigated the...
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ftubkonstanz:oai:kops.uni-konstanz.de:123456789/56362 2024-02-11T10:06:47+01:00 Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range Zhang, Yong Bach, Lennart T. Lohbeck, Kai Schulz, Kai G. Listmann, Luisa Klapper, Regina Riebesell, Ulf 2018-06-19 application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1gsioojw0uxb84 https://doi.org/10.5194/bg-15-3691-2018 eng eng http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1gsioojw0uxb84 http://dx.doi.org/10.5194/bg-15-3691-2018 178720040X http://creativecommons.org/licenses/by/4.0/ Biogeosciences. European Geosciences Union (EGU). 2018, 15(12), pp. 3691-3701. ISSN 1726-4170. eISSN 1726-4189. Available under: doi:10.5194/bg-15-3691-2018 ddc:570 doc-type:article doc-type:Text 2018 ftubkonstanz https://doi.org/10.5194/bg-15-3691-2018 2024-01-21T23:56:03Z Although coccolithophore physiological responses to CO 2 -induced changes in seawater carbonate chemistry have been widely studied in the past, there is limited knowledge on the variability of physiological responses between populations from different areas. In the present study, we investigated the specific responses of growth, particulate organic (POC) and inorganic carbon (PIC) production rates of three populations of the coccolithophore Emiliania huxleyi from three regions in the North Atlantic Ocean (Azores: six strains, Canary Islands: five strains, and Norwegian coast near Bergen: six strains) to a CO 2 partial pressure (pCO 2 ) range from 120 to 2630 µatm. Physiological rates of each population and individual strain increased with rising pCO 2 levels, reached a maximum and declined thereafter. Optimal pCO 2 for growth, POC production rates, and tolerance to low pH (i.e., high proton concentration) was significantly higher in an E. huxleyi population isolated from the Norwegian coast than in those isolated near the Azores and Canary Islands. This may be due to the large environmental variability including large pCO 2 and pH fluctuations in coastal waters off Bergen compared to the rather stable oceanic conditions at the other two sites. Maximum growth and POC production rates of the Azores and Bergen populations were similar and significantly higher than that of the Canary Islands population. This pattern could be driven by temperature–CO 2 interactions where the chosen incubation temperature (16 ∘C) was slightly below what strains isolated near the Canary Islands normally experience. Our results indicate adaptation of E. huxleyi to their local environmental conditions and the existence of distinct E. huxleyi populations. Within each population, different growth, POC, and PIC production rates at different pCO 2 levels indicated strain-specific phenotypic plasticity. Accounting for this variability is important to understand how or whether E. huxleyi might adapt to rising CO 2 levels. published ... Article in Journal/Newspaper North Atlantic KOPS - The Institutional Repository of the University of Konstanz Bergen Biogeosciences 15 12 3691 3701 |
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KOPS - The Institutional Repository of the University of Konstanz |
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English |
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ddc:570 Zhang, Yong Bach, Lennart T. Lohbeck, Kai Schulz, Kai G. Listmann, Luisa Klapper, Regina Riebesell, Ulf Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range |
topic_facet |
ddc:570 |
description |
Although coccolithophore physiological responses to CO 2 -induced changes in seawater carbonate chemistry have been widely studied in the past, there is limited knowledge on the variability of physiological responses between populations from different areas. In the present study, we investigated the specific responses of growth, particulate organic (POC) and inorganic carbon (PIC) production rates of three populations of the coccolithophore Emiliania huxleyi from three regions in the North Atlantic Ocean (Azores: six strains, Canary Islands: five strains, and Norwegian coast near Bergen: six strains) to a CO 2 partial pressure (pCO 2 ) range from 120 to 2630 µatm. Physiological rates of each population and individual strain increased with rising pCO 2 levels, reached a maximum and declined thereafter. Optimal pCO 2 for growth, POC production rates, and tolerance to low pH (i.e., high proton concentration) was significantly higher in an E. huxleyi population isolated from the Norwegian coast than in those isolated near the Azores and Canary Islands. This may be due to the large environmental variability including large pCO 2 and pH fluctuations in coastal waters off Bergen compared to the rather stable oceanic conditions at the other two sites. Maximum growth and POC production rates of the Azores and Bergen populations were similar and significantly higher than that of the Canary Islands population. This pattern could be driven by temperature–CO 2 interactions where the chosen incubation temperature (16 ∘C) was slightly below what strains isolated near the Canary Islands normally experience. Our results indicate adaptation of E. huxleyi to their local environmental conditions and the existence of distinct E. huxleyi populations. Within each population, different growth, POC, and PIC production rates at different pCO 2 levels indicated strain-specific phenotypic plasticity. Accounting for this variability is important to understand how or whether E. huxleyi might adapt to rising CO 2 levels. published ... |
format |
Article in Journal/Newspaper |
author |
Zhang, Yong Bach, Lennart T. Lohbeck, Kai Schulz, Kai G. Listmann, Luisa Klapper, Regina Riebesell, Ulf |
author_facet |
Zhang, Yong Bach, Lennart T. Lohbeck, Kai Schulz, Kai G. Listmann, Luisa Klapper, Regina Riebesell, Ulf |
author_sort |
Zhang, Yong |
title |
Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range |
title_short |
Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range |
title_full |
Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range |
title_fullStr |
Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range |
title_full_unstemmed |
Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO 2 range |
title_sort |
population-specific responses in physiological rates of emiliania huxleyi to a broad co 2 range |
publishDate |
2018 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1gsioojw0uxb84 https://doi.org/10.5194/bg-15-3691-2018 |
geographic |
Bergen |
geographic_facet |
Bergen |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Biogeosciences. European Geosciences Union (EGU). 2018, 15(12), pp. 3691-3701. ISSN 1726-4170. eISSN 1726-4189. Available under: doi:10.5194/bg-15-3691-2018 |
op_relation |
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1gsioojw0uxb84 http://dx.doi.org/10.5194/bg-15-3691-2018 178720040X |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/bg-15-3691-2018 |
container_title |
Biogeosciences |
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15 |
container_issue |
12 |
container_start_page |
3691 |
op_container_end_page |
3701 |
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1790604719325970432 |