Diazotrophy in the Indian Ocean: Current understanding and future perspectives

DOI Web Site 参考文献122件 オープンアクセス
  • Subhadeep Chowdhury
    Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110 Marseille France
  • Eric Raes
    Flourishing Oceans, Minderoo Foundation Nedlands Western Australia Australia
  • Cora Hörstmann
    Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110 Marseille France
  • Ayaz Ahmed
    Kuwait Institute for Scientific Research Salmiya Kuwait
  • Céline Ridame
    Laboratoire LOCEAN/IPSL Sorbonne Université‐CNRS‐IRD‐MNHN Paris France
  • Nicolas Metzl
    Laboratoire LOCEAN/IPSL Sorbonne Université‐CNRS‐IRD‐MNHN Paris France
  • P S Bhavya
    Department of Biological Oceanography Leibniz Institute for Baltic Sea Research, Warnemuende Rostock Germany
  • Takuya Sato
    Graduate School of Agricultural and Life Sciences The University of Tokyo Bunkyo‐ku Tokyo Japan
  • Takuhei Shiozaki
    Atmosphere and Ocean Research Institute The University of Tokyo Chiba Japan
  • Sophie Bonnet
    Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110 Marseille France
  • Carolin R. Löscher
    Nordcee, Department of Biology University of Southern Denmark Odense Denmark
  • Arvind Singh
    Physical Research Laboratory Ahmedabad India
  • Mar Benavides
    Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110 Marseille France

書誌事項

公開日
2023-09
資源種別
journal article
権利情報
  • http://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1002/lol2.10343
公開者
Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>Dinitrogen (N<jats:sub>2</jats:sub>) fixation provides the major source of reactive nitrogen in the open ocean, sustaining biological productivity. The Indian Ocean (IO) covers 22% of the ocean surface, while it only represents 1% of the global diazotroph database. Hence, constraining the sources of nitrogen in the IO is crucial. Here, we compile three decades of N<jats:sub>2</jats:sub> fixation and diazotroph DNA data in the IO. Our analysis reveals basin‐scale yearly rates between ~ 7 and 13 Tg N yr<jats:sup>−1</jats:sup>. These rates are in the range of previous modeling‐based estimates but may represent a lower bound estimate due to the lack of data in this basin. Diazotroph variability among sub‐basins may suggest endemicity but needs to be taken with caution due to biased sampling toward certain seasons and uneven spatial coverage. We provide recommendations for a more accurate representation of the IO in the global nitrogen budget and our knowledge of diazotroph biogeography.</jats:p>

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