Review Article | Published:

Multi-faceted particle pumps drive carbon sequestration in the ocean

Naturevolume 568pages327335 (2019) | Download Citation

Abstract

The ocean’s ability to sequester carbon away from the atmosphere exerts an important control on global climate. The biological pump drives carbon storage in the deep ocean and is thought to function via gravitational settling of organic particles from surface waters. However, the settling flux alone is often insufficient to balance mesopelagic carbon budgets or to meet the demands of subsurface biota. Here we review additional biological and physical mechanisms that inject suspended and sinking particles to depth. We propose that these ‘particle injection pumps’ probably sequester as much carbon as the gravitational pump, helping to close the carbon budget and motivating further investigation into their environmental control.

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Acknowledgements

P.W.B. was primarily supported by the Australian Research Council through a Laureate (FL160100131), and this research was also supported under the Australian Research Council’s Special Research Initiative for Antarctic Gateway Partnership (project ID SR140300001). H.C. acknowledges the support of the European Research Council (remOcean project, grant agreement 246777) and of the Climate Initiative of the BNP Paribas foundation (SOCLIM project). M.L. was supported by CNES, by the ANR project SOBUMS (ANR-16-CE01-0014) and by the National Aeronautics and Space Administration (NASA) grant NNX16AR50G. D.A.S. acknowledges support from NASA as part of the EXport Processes in the global Ocean from RemoTe Sensing (EXPORTS) field campaign, grant 80NSSC17K0692. T.W. was supported by National Science Foundation grant OCE-1635414.

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Nature thanks Sarah Giering, Stephanie Henson, Gerhard Herndl, Andreas Oschlies and Paul Wassmann for their contribution to the peer review of this work.

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Author notes

  1. These authors contributed equally: Hervé Claustre, Marina Levy, David A. Siegel, Thomas Weber

Affiliations

  1. Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia

    • Philip W. Boyd
  2. Sorbonne Université & CNRS, Laboratoire d’Océanographie de Villefranche-sur-mer (LOV), Villefranche-sur-Mer, France

    • Hervé Claustre
  3. Sorbonne Université, LOCEAN-IPSL, CNRS/IRD/MNHN, Paris, France

    • Marina Levy
  4. Department of Geography and Earth Research Institute, University of California, Santa Barbara, Santa Barbara, CA, USA

    • David A. Siegel
  5. Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY, USA

    • Thomas Weber

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P.W.B. devised the concept and structure for this Review. All authors wrote the manuscript.

Competing interests

The authors declare no competing interests.

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Correspondence to Philip W. Boyd.

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