Nitrogen fixation driven by mesoscale eddies and the Kuroshio Current in the northern South China Sea and the East China Sea

doi:10.1007/s13131-020-1691-0

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	Nitrogen fixation driven by mesoscale eddies and the Kuroshio Current in the northern South China Sea and the East China Sea
	Li, Liuyang 1,2; Wu, Chao 2; Sun, Jun 2,3; Song, Shuqun 4; Ding, Changling 2,5; Huang, Danyue 1,2; Pujari, Laxman 2,6
	2020-12-01
发表期刊	ACTA OCEANOLOGICA SINICA
ISSN	0253-505X
卷号	39 期号:12 页码:30-41
通讯作者	Sun, Jun([email protected])
摘要	N-2 fixation rates (NFR, in terms of N) in the northern South China Sea (nSCS) and the East China Sea (ECS) were measured using the acetylene reduction assay in summer and winter, 2009. NFR of the surface water ranged from 1.14 nmol/(L center dot d) to 10.40 nmol/(L center dot d) (average at (4.89 +/- 3.46) nmol/(L center dot d), n=11) in summer and 0.74 nmol/(L center dot d) to 29.45 nmol/(L center dot d) (average at (7.81 +/- 8.50) nmol/(L center dot d), n=15) in winter. Significant spatio-temporal heterogeneity emerged in our study: the anticyclonic eddies (AE) (P<0.01) and the Kuroshio Current (KC) (P<0.05) performed significantly higher NFR than that in the cyclonic eddies or no-eddy area (CEONE), indicating NFR was profoundly influenced by the physical process of the Kuroshio and mesoscale eddies. The depth-integrated N-2 fixation rates (INF, in terms of N) ranged from 52.4 mu mol/(m(2)center dot d) to 905.2 mu mol/(m(2)center dot d) (average at (428.9 +/- 305.5) mu mol/(m(2)center dot d), n=15) in the winter. The contribution of surface NFR to primary production (PP) ranged from 1.7% to 18.5% in the summer, and the mean contribution of INF to new primary production (NPP) in the nSCS and ECS were estimated to be 11.0% and 36.7% in the winter. The contribution of INF to NPP (3.0%-93.9%) also decreased from oligotrophic sea toward the eutrophic waters affected by runoffs or the CEONE. Furthermore, we observed higher contributions compared to previous studies, revealing the vital roles of nitrogen fixation in sustaining the carbon pump of the nSCS and ECS.
关键词	nitrogen fixation primary production anticyclonic eddies Kuroshio acetylene reduction assay
DOI	10.1007/s13131-020-1691-0
收录类别	SCI
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000614054900004
出版者	SPRINGER
引用统计	被引频次：6[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/337002/170055
专题	中国科学院海洋研究所
通讯作者	Sun, Jun
作者单位	1.Shanghai Jiao Tong Univ, Sch Life Sci & Biotechnol, Shanghai 200240, Peoples R China 2.Tianjin Univ Sci & Technol, Res Ctr Indian Ocean Ecosyst, Tianjin 300457, Peoples R China 3.China Univ Geosci Wuhan, Coll Marine Sci & Technol, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 5.Tianjin Univ Sci & Technol, Coll Biotechnol, Tianjin 300457, Peoples R China 6.Tianjin Univ Sci & Technol, Coll Food Engn & Biotechnol, Tianjin 300457, Peoples R China
推荐引用方式 GB/T 7714	Li, Liuyang,Wu, Chao,Sun, Jun,et al. Nitrogen fixation driven by mesoscale eddies and the Kuroshio Current in the northern South China Sea and the East China Sea[J]. ACTA OCEANOLOGICA SINICA,2020,39(12):30-41.
APA	Li, Liuyang.,Wu, Chao.,Sun, Jun.,Song, Shuqun.,Ding, Changling.,...&Pujari, Laxman.(2020).Nitrogen fixation driven by mesoscale eddies and the Kuroshio Current in the northern South China Sea and the East China Sea.ACTA OCEANOLOGICA SINICA,39(12),30-41.
MLA	Li, Liuyang,et al."Nitrogen fixation driven by mesoscale eddies and the Kuroshio Current in the northern South China Sea and the East China Sea".ACTA OCEANOLOGICA SINICA 39.12(2020):30-41.

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