Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2
Increasing atmospheric CO 2 concentrations are expected to impact pelagic ecosystem functioning in the near future by driving ocean warming and acidification. While numerous studies have investigated impacts of rising temperature and seawater acidification on planktonic organisms separately, little...
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ftunivtasecite:oai:ecite.utas.edu.au:133562 2023-05-15T17:50:50+02:00 Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 Sett, S Bach, LT Schulz, KG Koch-Klavsen, S Lebrato, M Riebesell, U 2014 application/pdf https://doi.org/10.1371/journal.pone.0088308 http://www.ncbi.nlm.nih.gov/pubmed/24505472 http://ecite.utas.edu.au/133562 en eng Public Library of Science http://ecite.utas.edu.au/133562/1/133562 - Temperature modulates coccolithophorid sensitivity of growth, photosynthesis.pdf http://dx.doi.org/10.1371/journal.pone.0088308 Sett, S and Bach, LT and Schulz, KG and Koch-Klavsen, S and Lebrato, M and Riebesell, U, Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 , PLoS ONE, 9, (2) Article e88308. ISSN 1932-6203 (2014) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/24505472 http://ecite.utas.edu.au/133562 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2014 ftunivtasecite https://doi.org/10.1371/journal.pone.0088308 2019-12-13T22:31:18Z Increasing atmospheric CO 2 concentrations are expected to impact pelagic ecosystem functioning in the near future by driving ocean warming and acidification. While numerous studies have investigated impacts of rising temperature and seawater acidification on planktonic organisms separately, little is presently known on their combined effects. To test for possible synergistic effects we exposed two coccolithophore species, Emiliania huxleyi and Gephyrocapsa oceanica , to a CO 2 gradient ranging from ∼0.5250 mol kg −1 (i.e. ∼206000 atm p CO 2 ) at three different temperatures (i.e. 10, 15, 20C for E. huxleyi and 15, 20, 25C for G. oceanica ). Both species showed CO 2 -dependent optimum-curve responses for growth, photosynthesis and calcification rates at all temperatures. Increased temperature generally enhanced growth and production rates and modified sensitivities of metabolic processes to increasing CO 2 . CO 2 optimum concentrations for growth, calcification, and organic carbon fixation rates were only marginally influenced from low to intermediate temperatures. However, there was a clear optimum shift towards higher CO 2 concentrations from intermediate to high temperatures in both species. Our results demonstrate that the CO 2 concentration where optimum growth, calcification and carbon fixation rates occur is modulated by temperature. Thus, the response of a coccolithophore strain to ocean acidification at a given temperature can be negative, neutral or positive depending on that strain's temperature optimum. This emphasizes that the cellular responses of coccolithophores to ocean acidification can only be judged accurately when interpreted in the proper eco-physiological context of a given strain or species. Addressing the synergistic effects of changing carbonate chemistry and temperature is an essential step when assessing the success of coccolithophores in the future ocean. Article in Journal/Newspaper Ocean acidification eCite UTAS (University of Tasmania) PLoS ONE 9 2 e88308 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Sett, S Bach, LT Schulz, KG Koch-Klavsen, S Lebrato, M Riebesell, U Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 |
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Earth Sciences Oceanography Biological Oceanography |
description |
Increasing atmospheric CO 2 concentrations are expected to impact pelagic ecosystem functioning in the near future by driving ocean warming and acidification. While numerous studies have investigated impacts of rising temperature and seawater acidification on planktonic organisms separately, little is presently known on their combined effects. To test for possible synergistic effects we exposed two coccolithophore species, Emiliania huxleyi and Gephyrocapsa oceanica , to a CO 2 gradient ranging from ∼0.5250 mol kg −1 (i.e. ∼206000 atm p CO 2 ) at three different temperatures (i.e. 10, 15, 20C for E. huxleyi and 15, 20, 25C for G. oceanica ). Both species showed CO 2 -dependent optimum-curve responses for growth, photosynthesis and calcification rates at all temperatures. Increased temperature generally enhanced growth and production rates and modified sensitivities of metabolic processes to increasing CO 2 . CO 2 optimum concentrations for growth, calcification, and organic carbon fixation rates were only marginally influenced from low to intermediate temperatures. However, there was a clear optimum shift towards higher CO 2 concentrations from intermediate to high temperatures in both species. Our results demonstrate that the CO 2 concentration where optimum growth, calcification and carbon fixation rates occur is modulated by temperature. Thus, the response of a coccolithophore strain to ocean acidification at a given temperature can be negative, neutral or positive depending on that strain's temperature optimum. This emphasizes that the cellular responses of coccolithophores to ocean acidification can only be judged accurately when interpreted in the proper eco-physiological context of a given strain or species. Addressing the synergistic effects of changing carbonate chemistry and temperature is an essential step when assessing the success of coccolithophores in the future ocean. |
format |
Article in Journal/Newspaper |
author |
Sett, S Bach, LT Schulz, KG Koch-Klavsen, S Lebrato, M Riebesell, U |
author_facet |
Sett, S Bach, LT Schulz, KG Koch-Klavsen, S Lebrato, M Riebesell, U |
author_sort |
Sett, S |
title |
Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 |
title_short |
Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 |
title_full |
Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 |
title_fullStr |
Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 |
title_full_unstemmed |
Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 |
title_sort |
temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p co 2 |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pone.0088308 http://www.ncbi.nlm.nih.gov/pubmed/24505472 http://ecite.utas.edu.au/133562 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://ecite.utas.edu.au/133562/1/133562 - Temperature modulates coccolithophorid sensitivity of growth, photosynthesis.pdf http://dx.doi.org/10.1371/journal.pone.0088308 Sett, S and Bach, LT and Schulz, KG and Koch-Klavsen, S and Lebrato, M and Riebesell, U, Temperature modulates coccolithophorid sensitivity of growth, photosynthesis and calcification to increasing seawater p CO 2 , PLoS ONE, 9, (2) Article e88308. ISSN 1932-6203 (2014) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/24505472 http://ecite.utas.edu.au/133562 |
op_doi |
https://doi.org/10.1371/journal.pone.0088308 |
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PLoS ONE |
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9 |
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2 |
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e88308 |
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