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Title: Nitrate anomaly in the upper nutricline at the SEATS site in the northern South China Sea – Evidence for nitrogen fixation
Authors: Kon-Kee Liu
George T. F. Wong
Shi-Wei Chung
Fuh-Kwo Shiah
Chung-Chi Chen
Liang-Saw Wen
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Date: 2002-12
Issue Date: 2017-02-08T03:43:48Z
Abstract: Abstract: Up to 2 μM of nitrate anomaly, N*, were found in the upper nutricline at the South East Asia Time-series Study (SEATS) site in the northern South China Sea (SCS). These concentrations were among the higher values reported in the Pacific and indicate the significant contribution of the remineralization of nitrogen-rich organic matter formed by nitrogen fixation to the nutrient dynamics of the area. The concentrations were systematically higher, by up to 2.5 μM, in the Fall through the early Spring, during the northeast monsoon, than in the Summer, suggesting that the impact of nitrogen fixation was higher during the former time period. This pattern is in phase with that of the atmospheric deposition of Asian dust to the northern SCS. The coherence is consistent with a coupling between nitrogen fixation and the availability of atmospherically derived iron.
Relation: 29(23)
Appears in Collections:[Institute of Marine Environment and Ecology] Periodical Articles

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