globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2812
论文题名:
Nutrient budgets in the subtropical ocean gyres dominated by lateral transport
作者: Letscher R.T.; Primeau F.; Moore J.K.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期:11
起始页码: 815
结束页码: 819
语种: 英语
Scopus关键词: biological production ; biological uptake ; biome ; carbon cycle ; ecosystem dynamics ; gyre ; inorganic carbon ; net primary production ; nitrogen fixation ; nutrient budget ; oceanic circulation ; phosphorus ; Atlantic Ocean ; Atlantic Ocean (North) ; Bermuda ; Hawaii [United States] ; United States
英文摘要: Ocean circulation replenishes surface nutrients depleted by biological production and export. Vertical processes are thought to dominate, but estimated vertical nutrient fluxes are insufficient to explain observed net productivity in the subtropical ocean gyres. Lateral inputs help balance the North Atlantic nutrient budget, but their importance for other gyres has not been demonstrated. Here we use an ocean model that couples circulation and ecosystem dynamics to show that lateral transport and biological uptake of inorganic and organic forms of nitrogen and phosphorus from the gyre margins exceeds the vertical delivery of nutrients, supplying 24-36% of the nitrogen and 44-67% of the phosphorus required to close gyre nutrient budgets. At the Bermuda and Hawaii time-series sites, nearly half of the annual lateral supply by lateral transport occurs during the summer-to-fall stratified period, helping explain seasonal patterns of inorganic carbon drawdown and nitrogen fixation. Our study confirms the importance of upper-ocean lateral nutrient transport for understanding the biological cycles of carbon and nutrients in the ocean's largest biome. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105899
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States

Recommended Citation:
Letscher R.T.,Primeau F.,Moore J.K.. Nutrient budgets in the subtropical ocean gyres dominated by lateral transport[J]. Nature Geoscience,2016-01-01,9(11)
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