Environmental drivers and key taxa shaping diatom-dinoflagellate ratios in eutrophic coastal waters
文献类型：期刊论文
| 作者 | Zhang, Lingshuai2,6; Wang, Zhiqin2,6; Yang, Jin-Yu Terence4; Song, Shuqun7; Chen, Zhaozhang4; Zhou, Kuanbo4; Zhang, Hao2; Tan, Yehui2; Liu, Hongbin1; Wang, Dazhi3 |
| 刊名 | MARINE LIFE SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2026-02-09 |
| 页码 | 16 |
| 关键词 | Coastal waters Diatom Dinoflagellate Diat/dino ratio Eutrophication Nutrients |
| ISSN号 | 2096-6490 |
| DOI | 10.1007/s42995-025-00343-4 |
| 通讯作者 | Xia, Xiaomin(xxm1984@xmu.edu.cn) |
| 英文摘要 | Diatoms and dinoflagellates are two pivotal phytoplankton groups present in coastal ecosystems that play key roles in marine food webs and biogeochemical cycles. The diatom-to-dinoflagellate ratio (diat/dino ratio) serves as an indicator of ecosystem status and phytoplankton community dynamics; however, the specific taxa that contribute to its variability remain poorly understood. This study investigated the phytoplankton community composition and diat/dino ratios in the coastal regions of the East China Sea and northern South China Sea during summer using quantitative PCR (qPCR) and 18S rRNA gene pyrosequencing. The qPCR results revealed that diatoms dominated in the estuarine and nearshore waters, whereas dinoflagellates prevailed in the offshore regions. Random Forest analysis identified dissolved oxygen (DO) and the nitrogen-to-phosphorus (N:P) and silicon-to-nitrogen (Si:N) ratios as the primary drivers of variation in the diat/dino ratio. The influence of N:P ratios was further modulated by the absolute nitrogen and phosphorus concentrations. Taxonomic profiling revealed that Thalassiosiraceae and Chaetocerotaceae were enriched in nutrient-rich estuarine waters, while Leptocylindraceae, Bacillariaceae, and Skeletonemaceae dominated in regions with low N:P ratios. In contrast, dinoflagellate families, such as Thoracosphaeraceae, Pyrocystaceae, Peridiniaceae, and Heterocapsaceae, were more abundant in environments with high DO and elevated N:P ratios. Notably, the northward expansion of Scrippsiella (Thoracosphaeraceae) drove changes in the bloom dynamics that threaten the coastal ecosystem balance. These findings demonstrate that nutrient stoichiometry and oxygen availability influence the diat/dino ratio by favoring distinct phytoplankton taxa, thus offering insights into how anthropogenic nutrient inputs shape community structure and guide coastal ecosystem management. |
| WOS关键词 | PHYTOPLANKTON COMMUNITY ; MARINE ; RESPONSES ; GROWTH ; CARBON ; DINOPHYCEAE ; COMPETITION ; TOXICITY ; NITROGEN ; HYPOXIA |
| 资助项目 | National Key Research and Development Program of China[2022YFC3105301] ; National Natural Science Foundation of China[32470101] ; National Natural Science Foundation of China[42188102] ; South China Sea Institute of Oceanology of the Chinese Academy of Sciences[SCSIO202205] ; Ocean Negative Carbon Emissions (ONCE) Program ; Science and Technology Planning Project of Guangdong Province[2023B1212060047] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515012095] ; Shaorong Fang from the Information and Network Center of Xiamen University |
| WOS研究方向 | Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001684494100001 |
| 出版者 | SPRINGERNATURE |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204691]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Xia, Xiaomin |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong 999077, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China 3.Xiamen Univ, Coll Environm & Ecol, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China 4.Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China 5.Xiamen Univ, Innovat Res Ctr Carbon Neutralizat, Fujian Key Lab Marine Carbon Sequestrat, Xiamen 361102, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Lingshuai,Wang, Zhiqin,Yang, Jin-Yu Terence,et al. Environmental drivers and key taxa shaping diatom-dinoflagellate ratios in eutrophic coastal waters[J]. MARINE LIFE SCIENCE & TECHNOLOGY,2026:16. |
| APA | Zhang, Lingshuai.,Wang, Zhiqin.,Yang, Jin-Yu Terence.,Song, Shuqun.,Chen, Zhaozhang.,...&Xia, Xiaomin.(2026).Environmental drivers and key taxa shaping diatom-dinoflagellate ratios in eutrophic coastal waters.MARINE LIFE SCIENCE & TECHNOLOGY,16. |
| MLA | Zhang, Lingshuai,et al."Environmental drivers and key taxa shaping diatom-dinoflagellate ratios in eutrophic coastal waters".MARINE LIFE SCIENCE & TECHNOLOGY (2026):16. |
入库方式： OAI收割
来源：海洋研究所
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