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

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·d) to 10.40 nmol/(L·d) (average at (4.89±3.46) nmol/(L·d), n =11...

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Veröffentlicht in:	Acta oceanologica Sinica 2020-12, Vol.39 (12), p.30-41
Hauptverfasser:	Li, Liuyang, Wu, Chao, Sun, Jun, Song, Shuqun, Ding, Changling, Huang, Danyue, Pujari, Laxman
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetylene Acetylene reduction Climatology Current rings Earth and Environmental Science Earth Sciences Ecology Eddies Engineering Fluid Dynamics Environmental Chemistry Eutrophic environments Eutrophic waters Eutrophication Heterogeneity Kuroshio Current Marine & Freshwater Sciences Mesoscale eddies Mesoscale phenomena Nitrogen Nitrogen fixation Nitrogenation Ocean circulation Oceanography Primary production Summer Surface water Vortices Winter
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Zusammenfassung:	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·d) to 10.40 nmol/(L·d) (average at (4.89±3.46) nmol/(L·d), n =11) in summer and 0.74 nmol/(L·d) to 29.45 nmol/(L·d) (average at (7.81±8.50) nmol/(L·d), n =15) in winter. Significant spatio-temporal heterogeneity emerged in our study: the anticyclonic eddies (AE) ( P
ISSN:	0253-505X 1869-1099
DOI:	10.1007/s13131-020-1691-0