| Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient | |
Liu, Mengtan1,2,3; Wang, Zhaohui1,4; Zhang, Guangtao1,2,3,4
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| 2021-10-20 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| Volume | 792Pages:9 |
| Corresponding Author | Zhang, Guangtao(gtzhang@qdio.ac.cn) |
| Abstract | The use of bivalve aquaculture to mitigate eutrophication in coastal waters has been proposed for years. As nitrogen overenrichment is usually accompanied by comparative shortages in silicate and phosphate, bivalve cultivation integrated with artificial fertilization may exhibit better nitrogen removal performance than bivalve cultivation alone. During a 15-day mesocosm experiment in a nitrogen-eutrophicated, phosphate-limited coastal pond, the nitrogen fixation in oyster tissue under rice husk ash (RHA) 1 fertilized conditions was 10 times higher than that in the oyster-only treatments with the same density. Meanwhile, the concentrations of dissolved inorganic nitrogen (DIN) and particulate nitrogen (PN) in the combined oyster-fertilization treatments decreased by 87.0% and 57.2%, respectively. Compared with the RHA fertilization treatments, the net DIN consumption was significantly lower and decreased with the oyster density in the oyster-only treatments. The dissolved N/Si ratio decreased from 1.44 to 1.01 and 0.93 in the control and fertilization treatments, respectively, whereas in the oyster-only treatments, it increased to 3.74 at low density and 29.15 at high density. Our results indicate that oyster cultivation can stimulate the regeneration of nitrogen in dissolved forms and intensify relative silicate shortages. The integration of RHA fertilization mediated silicate shortage and helped maintain a balanced dissolved N/Si ratio. Moreover, the combined oyster-RHA fertilization enhanced nitrogen removal efficiency and biomass accumulation and increased the feasibility of oyster cultivation as a cost-effective nitrogen reduction measure. (C) 2021 Elsevier B.V. All rights reserved. |
| Keyword | Nutrient limitation Nitrogen reduction Crassostrea gigas Eutrophication Fertilization |
| DOI | 10.1016/j.scitotenv.2021.148057 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA230504] ; Science and Technology Service Network Initiative[Y82346101L] ; National Program on Key Basic Research Project[2015CB452903] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000689484600003 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/176231 |
| Collection | 胶州湾海洋生态系统国家野外研究站 |
| Corresponding Author | Zhang, Guangtao |
| Affiliation | 1.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, 1 Wenhai Rd, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Liu, Mengtan,Wang, Zhaohui,Zhang, Guangtao. Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,792:9. |
| APA | Liu, Mengtan,Wang, Zhaohui,&Zhang, Guangtao.(2021).Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient.SCIENCE OF THE TOTAL ENVIRONMENT,792,9. |
| MLA | Liu, Mengtan,et al."Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient".SCIENCE OF THE TOTAL ENVIRONMENT 792(2021):9. |
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| 1-s2.0-S004896972103（1885KB） | 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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