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Study on the effect of modified clay on algae-derived organic nitrogen mineralization and its mechanisms in diatom Skeletonema costatum

文献类型：期刊论文

作者Feng, Xin4; Wang, Wentao1,2,3; Chu, Yongbao4; Zhu, Jianan2,3; Chi, Lianbao2,3; Chen, Jing1,2,3; Song, Xiuxian1,2,3; Yu, Zhiming1,2,3
刊名FRONTIERS IN MARINE SCIENCE
出版日期2025-04-04
卷号12页码:14
关键词modified clay skeletonema costatum algae-derived organic nitrogen nitrogen mineralization bacterial community
DOI10.3389/fmars.2025.1558899
通讯作者Wang, Wentao(wtwang@qdio.ac.cn) ; Chu, Yongbao(941472609@qq.com)
英文摘要Algae-derived organic nitrogen (AON) is mineralized by microorganisms to bioavailable inorganic nitrogen form, potentially sustaining the harmful algal blooms (HABs) for extended durations. The modified clay (MC) is an effective approach for mitigating HABs; however, its effects on the AON mineralization and the underlying mechanism remain unclear. In this study, the effects of MC on the mineralization of AON by a typical HAB species Skeletonema costatum were analyzed using the isotope dilution method, and the underlying mechanism were preliminarily discussed. The results revealed that the addition of MC could reduce the mineralization rates of AON and the regeneration amount of inorganic nitrogen by 71% and 60%, respectively, compared to the control group. The total fluorescence intensity was approximately 46% lower than that of the control group. In addition, the bacterial proliferation was suppressed by 66% and the community evolved from uniformity to diversification. It is hypothesized that the physical encapsulation of AON, chemical bonding of molecules and the variations of the microbial community under the utilization of MC were key mechanisms influencing the mineralization process. This study offers valuable insights into the environmental impacts following the HABs management and provides a scientific basis for investigating the controlling mechanisms of marine organic matter mineralization and burial.
WOS关键词BIOGENIC SILICA ; MATTER ; MARINE ; CARBON ; PHYTOPLANKTON ; FLUORESCENCE ; NUTRIENTS ; BLOOMS ; ACIDIFICATION ; COAGULATION
资助项目Intergovernmental innovation cooperation project of the Ministry of Science and Technology[2022YFE0136400] ; National Natural Science Foundation of China[42376210]
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种英语
WOS记录号WOS:001469349000001
出版者FRONTIERS MEDIA SA
源URL[http://ir.qdio.ac.cn/handle/337002/201629]  
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Wang, Wentao; Chu, Yongbao
作者单位1.Univ Chinese Acad Sci, Coll Marine Sci, Beijing, Peoples R China
2.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
4.Qingdao Univ Sci & Technol, Sch Environm & Safety Engn, Qingdao, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Feng, Xin,Wang, Wentao,Chu, Yongbao,et al. Study on the effect of modified clay on algae-derived organic nitrogen mineralization and its mechanisms in diatom Skeletonema costatum[J]. FRONTIERS IN MARINE SCIENCE,2025,12:14.
APA Feng, Xin.,Wang, Wentao.,Chu, Yongbao.,Zhu, Jianan.,Chi, Lianbao.,...&Yu, Zhiming.(2025).Study on the effect of modified clay on algae-derived organic nitrogen mineralization and its mechanisms in diatom Skeletonema costatum.FRONTIERS IN MARINE SCIENCE,12,14.
MLA Feng, Xin,et al."Study on the effect of modified clay on algae-derived organic nitrogen mineralization and its mechanisms in diatom Skeletonema costatum".FRONTIERS IN MARINE SCIENCE 12(2025):14.

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来源：海洋研究所

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