Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 18
Articles | Volume 23, issue 18
https://doi.org/10.5194/bg-23-6431-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-6431-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 18
Research article
 | 
16 Sep 2026
Research article |  | 16 Sep 2026

Stoichiometric deviation and regulatory mechanisms of AOU–nutrient ratio in the oligotrophic Northwest Pacific Ocean

Detong Tian, Xuegang Li, Jinming Song, Yunping Xu, Feng Zhao, Jun Ma, Shanshan Liu, Muhammad Inayat Ullah Khan, and Weichao Wu

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Short summary
In the tropical Northwest Pacific, a region of warm and nutrient‑poor ocean water, we investigated why oxygen consumption does not match the expected release of nutrients like nitrogen and phosphorus. We sampled from the surface to 2000 m and found that layering limits mixing, traps nutrients at depth, and leaves surface waters nutrient poor. Under these conditions, algae and bacteria recycle materials in ways that decouple carbon breakdown from nitrogen and phosphorus release.
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