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Atmospheric deposition and river runoff stimulate the utilization of dissolved organic phosphorus in coastal seas

Author

Listed:
  • Haoyu Jin

    (Ocean University of China
    Laoshan Laboratory
    University of East Anglia, Norwich Research Park)

  • Chao Zhang

    (Ocean University of China
    Laoshan Laboratory)

  • Siyu Meng

    (Ocean University of China
    Laoshan Laboratory
    University of East Anglia, Norwich Research Park)

  • Qin Wang

    (Ocean University of China
    Laoshan Laboratory)

  • Xiaokun Ding

    (Yantai University)

  • Ling Meng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yunyun Zhuang

    (Ocean University of China
    Laoshan Laboratory)

  • Xiaohong Yao

    (Ocean University of China
    Laoshan Laboratory)

  • Yang Gao

    (Ocean University of China
    Laoshan Laboratory)

  • Feng Shi

    (Ocean University of China
    Laoshan Laboratory)

  • Thomas Mock

    (University of East Anglia, Norwich Research Park)

  • Huiwang Gao

    (Ocean University of China
    Laoshan Laboratory)

Abstract

In coastal seas, the role of atmospheric deposition and river runoff in dissolved organic phosphorus (DOP) utilization is not well understood. Here, we address this knowledge gap by combining microcosm experiments with a global approach considering the relationship between the activity of alkaline phosphatases and changes in phytoplankton biomass in relation to the concentration of dissolved inorganic phosphorus (DIP). Our results suggest that the addition of aerosols and riverine water stimulate the biological utilization of DOP in coastal seas primarily by depleting DIP due to increasing nitrogen concentrations, which enhances phytoplankton growth. This “Anthropogenic Nitrogen Pump” was therefore identified to make DOP an important source of phosphorus for phytoplankton in coastal seas but only when the ratio of chlorophyll a to DIP [Log10 (Chl a / DIP)] is larger than 1.20. Our study therefore suggests that anthropogenic nitrogen input might contribute to the phosphorus cycle in coastal seas.

Suggested Citation

  • Haoyu Jin & Chao Zhang & Siyu Meng & Qin Wang & Xiaokun Ding & Ling Meng & Yunyun Zhuang & Xiaohong Yao & Yang Gao & Feng Shi & Thomas Mock & Huiwang Gao, 2024. "Atmospheric deposition and river runoff stimulate the utilization of dissolved organic phosphorus in coastal seas," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-44838-7
    DOI: 10.1038/s41467-024-44838-7
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    References listed on IDEAS

    as
    1. Nicolas Gruber & James N. Galloway, 2008. "An Earth-system perspective of the global nitrogen cycle," Nature, Nature, vol. 451(7176), pages 293-296, January.
    2. Stephen J. Giovannoni & Ulrich Stingl, 2005. "Molecular diversity and ecology of microbial plankton," Nature, Nature, vol. 437(7057), pages 343-348, September.
    3. T. J. Browning & E. P. Achterberg & J. C. Yong & I. Rapp & C. Utermann & A. Engel & C. M. Moore, 2017. "Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
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