Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance
The ecologically important marine phytoplankton group coccolithophores have a global distribution. The impacts of ocean acidification on the cosmopolitan species <i>Emiliania huxleyi</i> have received much attention and have been intensively studied. However, the species-specific respons...
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MDPI AG
2023-09-01
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| author | Fengxia Wu Jia Guo Haozhen Duan Tongtong Li Yanan Wang Yuntao Wang Shiqiang Wang Yuanyuan Feng |
| author_facet | Fengxia Wu Jia Guo Haozhen Duan Tongtong Li Yanan Wang Yuntao Wang Shiqiang Wang Yuanyuan Feng |
| author_sort | Fengxia Wu |
| collection | DOAJ |
| description | The ecologically important marine phytoplankton group coccolithophores have a global distribution. The impacts of ocean acidification on the cosmopolitan species <i>Emiliania huxleyi</i> have received much attention and have been intensively studied. However, the species-specific responses of coccolithophores and how these responses will be regulated by other environmental drivers are still largely unknown. To examine the interactive effects of irradiance and ocean acidification on the physiology of the coastal coccolithophore species <i>Pleurochrysis carterae</i>, we carried out a semi-continuous incubation experiment under a range of irradiances (50, 200, 500, 800 μmol photons m<sup>−2</sup> s<sup>−1</sup>) at two CO<sub>2</sub> concentration conditions of 400 and 800 ppm. The results suggest that the saturation irradiance for the growth rate was higher at an elevated CO<sub>2</sub> concentration. Ocean acidification weakened the particulate organic carbon (POC) production of <i>Pleurochrysis carterae</i> and the inhibition rate was decreased with increasing irradiance, indicating that ocean acidification may affect the tolerating capacity of photosynthesis to higher irradiance. Our results further provide new insight into the species-specific responses of coccolithophores to the projected ocean acidification under different irradiance scenarios in the changing marine environment. |
| first_indexed | 2024-03-10T23:01:14Z |
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| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-10T23:01:14Z |
| publishDate | 2023-09-01 |
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| series | Biology |
| spelling | doaj.art-3f11273e287246f2866460a25c36a2732023-11-19T09:39:06ZengMDPI AGBiology2079-77372023-09-01129124910.3390/biology12091249Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to IrradianceFengxia Wu0Jia Guo1Haozhen Duan2Tongtong Li3Yanan Wang4Yuntao Wang5Shiqiang Wang6Yuanyuan Feng7College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, ChinaCollege of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, ChinaCollege of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, ChinaCollege of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, ChinaCollege of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaCollege of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, ChinaSchool of Oceanography, Shanghai Jiao Tong University, Shanghai 200040, ChinaThe ecologically important marine phytoplankton group coccolithophores have a global distribution. The impacts of ocean acidification on the cosmopolitan species <i>Emiliania huxleyi</i> have received much attention and have been intensively studied. However, the species-specific responses of coccolithophores and how these responses will be regulated by other environmental drivers are still largely unknown. To examine the interactive effects of irradiance and ocean acidification on the physiology of the coastal coccolithophore species <i>Pleurochrysis carterae</i>, we carried out a semi-continuous incubation experiment under a range of irradiances (50, 200, 500, 800 μmol photons m<sup>−2</sup> s<sup>−1</sup>) at two CO<sub>2</sub> concentration conditions of 400 and 800 ppm. The results suggest that the saturation irradiance for the growth rate was higher at an elevated CO<sub>2</sub> concentration. Ocean acidification weakened the particulate organic carbon (POC) production of <i>Pleurochrysis carterae</i> and the inhibition rate was decreased with increasing irradiance, indicating that ocean acidification may affect the tolerating capacity of photosynthesis to higher irradiance. Our results further provide new insight into the species-specific responses of coccolithophores to the projected ocean acidification under different irradiance scenarios in the changing marine environment.https://www.mdpi.com/2079-7737/12/9/1249phytoplanktoncoccolithophoresCO<sub>2</sub>irradiancephotosynthesiscalcification |
| spellingShingle | Fengxia Wu Jia Guo Haozhen Duan Tongtong Li Yanan Wang Yuntao Wang Shiqiang Wang Yuanyuan Feng Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance Biology phytoplankton coccolithophores CO<sub>2</sub> irradiance photosynthesis calcification |
| title | Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance |
| title_full | Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance |
| title_fullStr | Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance |
| title_full_unstemmed | Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance |
| title_short | Ocean Acidification Affects the Response of the Coastal Coccolithophore <i>Pleurochrysis carterae</i> to Irradiance |
| title_sort | ocean acidification affects the response of the coastal coccolithophore i pleurochrysis carterae i to irradiance |
| topic | phytoplankton coccolithophores CO<sub>2</sub> irradiance photosynthesis calcification |
| url | https://www.mdpi.com/2079-7737/12/9/1249 |
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