Articles | Volume 13, issue 13
https://doi.org/10.5194/bg-13-3887-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-3887-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
06 Jul 2016
Research article |
| 06 Jul 2016
Potentially bioavailable iron delivery by iceberg-hosted sediments and atmospheric dust to the polar oceans
Robert Raiswell
CORRESPONDING AUTHOR
Cohen Biogeochemistry Laboratory, School of Earth and Environment,
University of Leeds, Leeds LS2 9JT, UK
Jon R. Hawkings
Bristol Glaciology Centre, School of Geographical Sciences,
University of Bristol, Bristol BS8 1SS, UK
Liane G. Benning
Cohen Biogeochemistry Laboratory, School of Earth and Environment,
University of Leeds, Leeds LS2 9JT, UK
GFZ, German Research Centre for Geosciences, Telegrafenberg, 11473
Potsdam, Germany
Alex R. Baker
Laboratory for Global Marine and Atmospheric Chemistry, School of
Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
Ros Death
Bristol Glaciology Centre, School of Geographical Sciences,
University of Bristol, Bristol BS8 1SS, UK
Samuel Albani
Department of Earth and Atmospheric Sciences, Cornell University,
Ithaca, New York, USA
now at: the Institute for Geophysics and Meteorology, University of Cologne,
Cologne, Germany
Natalie Mahowald
Department of Earth and Atmospheric Sciences, Cornell University,
Ithaca, New York, USA
Michael D. Krom
Cohen Biogeochemistry Laboratory, School of Earth and Environment,
University of Leeds, Leeds LS2 9JT, UK
Department of Marine Biology, Haifa University, Haifa, Israel
Simon W. Poulton
Cohen Biogeochemistry Laboratory, School of Earth and Environment,
University of Leeds, Leeds LS2 9JT, UK
Jemma Wadham
Bristol Glaciology Centre, School of Geographical Sciences,
University of Bristol, Bristol BS8 1SS, UK
Martyn Tranter
Bristol Glaciology Centre, School of Geographical Sciences,
University of Bristol, Bristol BS8 1SS, UK
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Short summary
Iron is an essential nutrient for plankton growth. One important source of iron is wind-blown dust. The polar oceans are remote from dust sources but melting icebergs supply sediment that contains iron which is potentially available to plankton. We show that iceberg sediments contain more potentially bioavailable iron than wind-blown dust. Iceberg sources will become increasingly important with climate change and increased plankton growth can remove more carbon dioxide from the atmosphere.
Iron is an essential nutrient for plankton growth. One important source of iron is wind-blown...
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