Articles | Volume 23, issue 13
https://doi.org/10.5194/bg-23-4515-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-4515-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Jul 2026
Research article |
| 06 Jul 2026
| 06 Jul 2026
Ocean acidification alters phytoplankton diversity and community structure in the coastal water of the East China Sea
Yuming Rao
State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, China
Na Wang
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
He Li
Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
Jiazhen Sun
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Xiaowen Jiang
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Di Zhang
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Liming Qu
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Qianqian Fu
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Xuyang Wang
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Cong Zhou
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Zichao Deng
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Yang Tian
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Xiangqi Yi
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Ruiping Huang
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Guang Gao
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
Xin Lin
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Xiamen University, Xiamen, China
State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, China
Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
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Xinjie Ma, Xiangming Shi, Yingxu Wu, Xiangqi Yi, Biqi Zheng, and Di Qi
EGUsphere, https://doi.org/10.5194/egusphere-2026-3442, https://doi.org/10.5194/egusphere-2026-3442, 2026
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary
Short summary
We studied a coastal maricultural bay to reveal the role of sediment CaCO3 dissolution in benthic DIC effluxes and acidification mitigation. In combination of the applications of radioisotopes and stable carbon isotope, we addressed the mechanism that benthic disturbance lowered CaCO3 dissolution. Our study challenges the idea that organic degradation dominates sediment DIC production and presents the processes regulating the sediment CaCO3 dissolution.
Yu Shang, Jingmin Qiu, Yuxi Weng, Xin Wang, Di Zhang, Yuwei Zhou, Juntian Xu, and Futian Li
Biogeosciences, 22, 1203–1214, https://doi.org/10.5194/bg-22-1203-2025, https://doi.org/10.5194/bg-22-1203-2025, 2025
Short summary
Short summary
Research on the influences of dynamic pH on the marine ecosystem is still in its infancy. We manipulated the culturing pH to simulate pH fluctuation and found lower pH could increase eicosapentaenoic acid and docosahexaenoic acid production with unaltered growth and photosynthesis in two marine diatoms. It is important to consider pH variation for more accurate predictions regarding the consequences of acidification in coastal waters.
Guang Gao, Tifeng Wang, Jiazhen Sun, Xin Zhao, Lifang Wang, Xianghui Guo, and Kunshan Gao
Biogeosciences, 19, 2795–2804, https://doi.org/10.5194/bg-19-2795-2022, https://doi.org/10.5194/bg-19-2795-2022, 2022
Short summary
Short summary
After conducting large-scale deck-incubation experiments, we found that seawater acidification (SA) increased primary production (PP) in coastal waters but reduced it in pelagic zones, which is mainly regulated by local pH, light intensity, salinity, and community structure. In future oceans, SA combined with decreased upward transports of nutrients may synergistically reduce PP in pelagic zones.
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Short summary
In a mesocosm experiment conducted in the highly eutrophic coastal water of southern East China Sea, we found that the impacts of ocean acidification (OA) on phytoplankton diversity and primary production depend on status of eutrophication or nutrient availability, with OA likely to reduce the biodiversity and primary production in the phytoplankton community after the nutrients depletion. In future oceans, OA and nutrients depletion may synergistically reduce the biodiversity in coastal waters.
In a mesocosm experiment conducted in the highly eutrophic coastal water of southern East China...
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