IDEAS home Printed from https://ideas.repec.org/a/nat/natcli/v9y2019i2d10.1038_s41558-018-0391-7.html
   My bibliography  Save this article

Organic matter from Arctic sea-ice loss alters bacterial community structure and function

Author

Listed:
  • Graham J. C. Underwood

    (University of Essex)

  • Christine Michel

    (Freshwater Institute)

  • Guillaume Meisterhans

    (Freshwater Institute)

  • Andrea Niemi

    (Freshwater Institute)

  • Claude Belzile

    (Université du Québec à Rimouski)

  • Matthias Witt

    (Bruker Daltonik GmbH)

  • Alex J. Dumbrell

    (University of Essex)

  • Boris P. Koch

    (Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
    University of Applied Sciences)

Abstract

Continuing losses of multi-year sea ice (MYI) across the Arctic are causing first-year sea ice (FYI) to dominate the Arctic ice pack. Melting FYI provides a strong seasonal pulse of dissolved organic matter (DOM) into surface waters; however, the biological impact of this DOM input is unknown. Here we show that DOM additions cause important and contrasting changes in under-ice bacterioplankton abundance, production and species composition. Utilization of DOM was influenced by molecular size, with 10–100 kDa and >100 kDa DOM fractions promoting rapid growth of particular taxa, while uptake of sulfur and nitrogen-rich low molecular weight organic compounds shifted bacterial community composition. These results demonstrate the ecological impacts of DOM released from melting FYI, with wide-ranging consequences for the cycling of organic matter across regions of the Arctic Ocean transitioning from multi-year to seasonal sea ice as the climate continues to warm.

Suggested Citation

  • Graham J. C. Underwood & Christine Michel & Guillaume Meisterhans & Andrea Niemi & Claude Belzile & Matthias Witt & Alex J. Dumbrell & Boris P. Koch, 2019. "Organic matter from Arctic sea-ice loss alters bacterial community structure and function," Nature Climate Change, Nature, vol. 9(2), pages 170-176, February.
    • Handle: RePEc:nat:natcli:v:9:y:2019:i:2:d:10.1038_s41558-018-0391-7
    DOI: 10.1038/s41558-018-0391-7
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41558-018-0391-7
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/s41558-018-0391-7?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcli:v:9:y:2019:i:2:d:10.1038_s41558-018-0391-7. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.