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No iron fertilization in the equatorial Pacific Ocean during the last ice age

Author

Listed:
  • K. M. Costa

    (Lamont-Doherty Earth Observatory of Columbia University
    Columbia University)

  • J. F. McManus

    (Lamont-Doherty Earth Observatory of Columbia University
    Columbia University)

  • R. F. Anderson

    (Lamont-Doherty Earth Observatory of Columbia University
    Columbia University)

  • H. Ren

    (National Taiwan University)

  • D. M. Sigman

    (Princeton University)

  • G. Winckler

    (Lamont-Doherty Earth Observatory of Columbia University
    Columbia University)

  • M. Q. Fleisher

    (Lamont-Doherty Earth Observatory of Columbia University)

  • F. Marcantonio

    (Texas A&M University)

  • A. C. Ravelo

    (University of California, Santa Cruz)

Abstract

Core isotope measurements in the equatorial Pacific Ocean reveal that although atmospheric dust deposition during the last ice age was higher than today’s, the productivity of the equatorial Pacific Ocean did not increase; this may have been because iron-enabled greater nutrient consumption, mainly in the Southern Ocean, reduced the nutrients available in the equatorial Pacific Ocean, and hence also productivity there.

Suggested Citation

  • K. M. Costa & J. F. McManus & R. F. Anderson & H. Ren & D. M. Sigman & G. Winckler & M. Q. Fleisher & F. Marcantonio & A. C. Ravelo, 2016. "No iron fertilization in the equatorial Pacific Ocean during the last ice age," Nature, Nature, vol. 529(7587), pages 519-522, January.
    • Handle: RePEc:nat:nature:v:529:y:2016:i:7587:d:10.1038_nature16453
    DOI: 10.1038/nature16453
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