Knowledge Management System Of Institute of Oceanology, Chinese Academy of Sciences
| Nitrogen in Atmospheric Wet Depositions Over the East Indian Ocean and West Pacific Ocean Spatial Variability, Source Identification, and Potential Influences | |
Jiang, Shan1; Jin, Jie1; Jiang, Shuo1; Wu, Ying1; Wang, Jianing2 ; Chen, Ju3; Zhang, Zhenqiu3; Liu, Sumei4,5; Chang, Yan1; Wang, Lingyan4,5; Zhang, Jing1,6
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| 2021-01-25 | |
| Source Publication | FRONTIERS IN MARINE SCIENCE
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| Volume | 7Pages:16 |
| Corresponding Author | Jiang, Shan(sjiang@sklec.ecnu.edu.cn) |
| Abstract | Atmospheric deposition is the dominant pathway for the loading of exogenous nitrogen (N) to open ocean. Here, rainwater samples were collected from 31 stations in the equatorial East Indian Ocean (EIO) and West Pacific Ocean (WPO) to explore the spatial variability of N species, potential sources, and related ecological influences. Among two oceans, nitrate (NO3-) and ammonium (NH4+) were the main components in the rainwater N inventory. NO3- concentrations varied from 0.19 to 100.5 mu M, whereas NH4+ concentrations ranged from 0.54 to 110.6 mu M. Among all stations, low concentrations of NO3- and NH4+ appeared in the remote ocean, whereas high concentrations were observed at the stations near the Malacca Strait and New Guinea, coupled with an enhancement of non-sea salt major ions, e.g., calcium ions (Ca2+) and sulfate (SO42-), revealing the influence from coastal human activities, such as coal and gasoline combustion. In the remote ocean, delta N-15-NH4+ ranged from -5.7 to-9.3 parts per thousand, whereas it dropped to-15.5 parts per thousand near coasts. A logarithmic decay between delta N-15-NH4+ and NH4+ concentrations in rainwater samples was obtained, suggesting a shift from natural source (seawater emission) in oceanic precipitation events to anthropogenic source (chemical fertilizer volatilization and vehicle exhaust) in coastal rainwaters. delta N-15-NO3- in the remote ocean varied between -1.7 and 0.4 parts per thousand with low levels found in the WPO, likely related to the ascending air flow driven by the Walker Circulation. In coastal oceans, delta N-15-NO3- ranged from 1.5 to 3.5. The linkage between delta N-15-NO3- and NO3- concentrations varied in two oceans, resulting from difference in biological and fossil fuel combustion contributions. Compared with ocean surface water, N in the rainwater was markedly enriched, suggesting that N from atmospheric wet depositions could rapidly enhance the dissolved N availability in ocean surface water. However, the N redundancy according to the Redfield-Brzezinski ratio (N:Si:P = 16:16:1) in the rainwater might benefit from the growth of N-preference phytoplankton species and microbes. As the first study on N concentrations, sources, and stoichiometry balance in rainwater over the equatorial WPO and EIO, the results could be a support to the global N budget estimation and oceanic primary production modeling. |
| Keyword | atmosphere nitrogen Indian Ocean Pacific Ocean precipitation stable isotope |
| DOI | 10.3389/fmars.2020.600843 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41876071] ; National Natural Science Foundation of China[41876074] ; National Natural Science Foundation of China[41476065] ; National Natural Science Foundation of China[41706081] ; National Natural Science Foundation of China[41806096] ; Scientific Research Foundation of SKLEC[2017RCDW04] |
| WOS Research Area | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| WOS Subject | Environmental Sciences ; Marine & Freshwater Biology |
| WOS ID | WOS:000613332900001 |
| Publisher | FRONTIERS MEDIA SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/169695 |
| Collection | 中国科学院海洋研究所 |
| Corresponding Author | Jiang, Shan |
| Affiliation | 1.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou, Peoples R China 4.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao, Peoples R China 5.Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao, Peoples R China 6.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai, Peoples R China |
| Recommended Citation GB/T 7714 | Jiang, Shan,Jin, Jie,Jiang, Shuo,et al. Nitrogen in Atmospheric Wet Depositions Over the East Indian Ocean and West Pacific Ocean Spatial Variability, Source Identification, and Potential Influences[J]. FRONTIERS IN MARINE SCIENCE,2021,7:16. |
| APA | Jiang, Shan.,Jin, Jie.,Jiang, Shuo.,Wu, Ying.,Wang, Jianing.,...&Zhang, Jing.(2021).Nitrogen in Atmospheric Wet Depositions Over the East Indian Ocean and West Pacific Ocean Spatial Variability, Source Identification, and Potential Influences.FRONTIERS IN MARINE SCIENCE,7,16. |
| MLA | Jiang, Shan,et al."Nitrogen in Atmospheric Wet Depositions Over the East Indian Ocean and West Pacific Ocean Spatial Variability, Source Identification, and Potential Influences".FRONTIERS IN MARINE SCIENCE 7(2021):16. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| fmars-07-600843.pdf（4859KB） | 期刊论文 | 出版稿 | 延迟开放 | CC BY-NC-SA | View 2023-7-1后可获取 | |
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