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.
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.
the Creative Commons Attribution 4.0 License.
Stoichiometric deviation and regulatory mechanisms of AOU–nutrient ratio in the oligotrophic Northwest Pacific Ocean
Detong Tian
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai, 201306, China
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266000, China
Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Jinming Song
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266000, China
Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Yunping Xu
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai, 201306, China
Feng Zhao
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266000, China
Jun Ma
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266000, China
Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Shanshan Liu
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266000, China
Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Muhammad Inayat Ullah Khan
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai, 201306, China
Weichao Wu
CORRESPONDING AUTHOR
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai, 201306, China
International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China
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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.
In the tropical Northwest Pacific, a region of warm and nutrient‑poor ocean water, we...
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