Nanomolar phosphate supply and its recycling drive net community production in the subtropical North Pacific

Fuminori Hashihama (), Ichiro Yasuda, Aki Kumabe, Mitsuhide Sato, Hiroshi Sasaoka, Yosuke Iida, Takuhei Shiozaki, Hiroaki Saito, Jota Kanda, Ken Furuya, Philip W. Boyd and Masao Ishii
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Fuminori Hashihama: Tokyo University of Marine Science and Technology
Ichiro Yasuda: The University of Tokyo
Aki Kumabe: Tokyo University of Marine Science and Technology
Mitsuhide Sato: The University of Tokyo
Hiroshi Sasaoka: Tokyo University of Marine Science and Technology
Yosuke Iida: Japan Meteorological Agency
Takuhei Shiozaki: The University of Tokyo
Hiroaki Saito: The University of Tokyo
Jota Kanda: Tokyo University of Marine Science and Technology
Ken Furuya: The University of Tokyo
Philip W. Boyd: University of Tasmania
Masao Ishii: Japan Meteorological Agency

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract Seasonal drawdown of dissolved inorganic carbon (DIC) in the subtropical upper ocean makes a significant contribution to net community production (NCP) globally. Although NCP requires macronutrient supply, surface macronutrients are chronically depleted, and their supply has been unable to balance the NCP demand. Here, we report nanomolar increases in surface nitrate plus nitrite (N+N, ~20 nM) and phosphate (PO4, ~15 nM) from summer to winter in the western subtropical North Pacific. Molar ratios of upward fluxes of DIC:N+N:PO4 to the euphotic zone (

Date: 2021
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DOI: 10.1038/s41467-021-23837-y

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