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Dissolved N pollution and its biogeochemical constraints along a river-sea continuum of a typical dense oyster mariculture coastal water, northwest South China Sea

文献类型：期刊论文

作者Dan, Solomon Felix1; Zeng, Xiaolian1; Tang, Jianhui1,2,3,4
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期2024-12-05
卷号480页码:23
关键词N isotopes N pollution Nutrient stoichiometry Biogeochemistry Oyster mariculture
ISSN号0304-3894
DOI10.1016/j.jhazmat.2024.136207
通讯作者Dan, Solomon Felix(solomon.dan86@yahoo.com) ; Tang, Jianhui(jhtang@yic.ac.cn)
英文摘要Dissolved nutrients, including nitrate (NO-3-N) and its dual isotopes (615N-NO- 3 and 618O-NO-3) were systematically studied along a river-sea continuum, wherein dense oyster mariculture is implemented, to constrain the pollution sources and biogeochemical cycling mechanisms of nitrogen (N). Total dissolved N, mainly composed of inorganic N, showed strong anthropogenic influence. Based on MixSIAR model results, N pollution was predominantly sourced from sewage/wastewater (55.9-64.3 %). Nutrient stoichiometry revealed DIP and DSi stress, and surface water in the riverine region was severely eutrophic. The occurrences of eutrophication and changes in nutrient stoichiometry were significantly related to N pollution sources in both summer and winter. N dynamics were controlled by anthropogenic activities and physical mixing. However, due to the insignificance of biological processes such as denitrification, phytoplankton assimilation, N2 fixation, and nitrification, including the lack of significant isotopic fractionation associated with these processes, and the poor fit of both the Rayleigh Model and Open system Model to the measured data, it is speculated that the several-fold reduction in N load and eutrophication along the river-sea continuum could be attributed to a combination of significant N removal by dense oyster mariculture and nutrient dilution due to physical mixing of river and seawater during winter and summer.
WOS关键词SUBMARINE GROUNDWATER DISCHARGE ; NITROGEN ISOTOPE FRACTIONATION ; SHELLFISH AQUACULTURE ; NITRATE SOURCES ; DUAL-ISOTOPE ; UNCERTAINTY ANALYSIS ; NUTRIENT DYNAMICS ; ORGANIC NITROGEN ; CHANGJIANG RIVER ; BAY ESTUARY
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001348410700001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC)-Shandong Joint Fund ; Guangxi Science and Technology Base and Talents Special Project ; Scientific Research Startup Fund of Beibu Gulf University ; Pinglu Canal and Beibu Gulf Coastal Ecosystem Observation and Research Station of Guangxi ; Marine Science Program for Guangxi First-Class Discipline, Beibu Gulf University
源URL[http://ir.yic.ac.cn/handle/133337/37860]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
通讯作者Dan, Solomon Felix; Tang, Jianhui
作者单位1.Beibu Gulf Univ, Coll Marine Sci, Guangxi Key Lab Marine Environm Change & Disaster, Qinzhou 535011, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.YICCAS, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
4.Beibu Gulf Univ, Coll Marine Sci, Guangxi Key Lab Marine Environm Change & Disaster, Pinglu Canal & Beibu Gulf Coastal Ecosyst Observat, Qinzhou 535011, Peoples R China
推荐引用方式
GB/T 7714		 Dan, Solomon Felix,Zeng, Xiaolian,Tang, Jianhui. Dissolved N pollution and its biogeochemical constraints along a river-sea continuum of a typical dense oyster mariculture coastal water, northwest South China Sea[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,480:23.
APA Dan, Solomon Felix,Zeng, Xiaolian,&Tang, Jianhui.(2024).Dissolved N pollution and its biogeochemical constraints along a river-sea continuum of a typical dense oyster mariculture coastal water, northwest South China Sea.JOURNAL OF HAZARDOUS MATERIALS,480,23.
MLA Dan, Solomon Felix,et al."Dissolved N pollution and its biogeochemical constraints along a river-sea continuum of a typical dense oyster mariculture coastal water, northwest South China Sea".JOURNAL OF HAZARDOUS MATERIALS 480(2024):23.

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来源：烟台海岸带研究所

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