Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient

doi:10.1016/j.scitotenv.2021.148057

	Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient
	Liu, Mengtan 1,2,3; Wang, Zhaohui 1,4; Zhang, Guangtao1,2,3,4
	2021-10-20
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	792 页码:9
通讯作者	Zhang, Guangtao([email protected])
摘要	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.
关键词	Nutrient limitation Nitrogen reduction Crassostrea gigas Eutrophication Fertilization
DOI	10.1016/j.scitotenv.2021.148057
收录类别	SCI
语种	英语
资助项目	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研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000689484600003
出版者	ELSEVIER
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176231
专题	胶州湾海洋生态系统国家野外研究站
通讯作者	Zhang, Guangtao
作者单位	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
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 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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