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Lake sedimentary biogenic silica from diatoms constitutes a significant global sink for aluminium

Author

Listed:
  • Dong Liu

    (Institutions of Earth Science, Chinese Academy of Sciences)

  • Peng Yuan

    (Institutions of Earth Science, Chinese Academy of Sciences)

  • Qian Tian

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Hongchang Liu

    (Institutions of Earth Science, Chinese Academy of Sciences)

  • Liangliang Deng

    (Institutions of Earth Science, Chinese Academy of Sciences)

  • Yaran Song

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Junming Zhou

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Dusan Losic

    (University of Adelaide)

  • Jieyu Zhou

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Hongzhe Song

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Haozhe Guo

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Wenxiao Fan

    (Institutions of Earth Science, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Diatoms play an important role in marine biogeochemical cycle of aluminum (Al), as dissolved Al is taken up by diatoms to build their siliceous frustules and is involved in the sedimentation of diatomaceous biogenic silica (BSi). The Al incorporation in BSi facilitates decreasing the dissolution of marine BSi and thus substantially influences the biochemical processes driven by diatoms, such as CO2 sequestration. However, the role of lake BSi in the terrestrial biochemical Al cycle has not been explored, though lakes represent the second-largest sink for BSi. By identifying the previously unexplored high Al/Si atomic ratios (up to 0.052) in lake BSi, here we show lake BSi is a large terrestrial Al pool due to its high Al content, and lake sedimentary BSi constitutes a significant global sink for Al, which is on the same magnitude as the Al sink in global oceans.

Suggested Citation

  • Dong Liu & Peng Yuan & Qian Tian & Hongchang Liu & Liangliang Deng & Yaran Song & Junming Zhou & Dusan Losic & Jieyu Zhou & Hongzhe Song & Haozhe Guo & Wenxiao Fan, 2019. "Lake sedimentary biogenic silica from diatoms constitutes a significant global sink for aluminium," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12828-9
    DOI: 10.1038/s41467-019-12828-9
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