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

K. M. Costa (), J. F. McManus, R. F. Anderson, H. Ren, D. M. Sigman, G. Winckler, M. Q. Fleisher, F. Marcantonio and A. C. Ravelo
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K. M. Costa: Lamont-Doherty Earth Observatory of Columbia University
J. F. McManus: Lamont-Doherty Earth Observatory of Columbia University
R. F. Anderson: Lamont-Doherty Earth Observatory of Columbia University
H. Ren: National Taiwan University
D. M. Sigman: Princeton University
G. Winckler: Lamont-Doherty Earth Observatory of 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

Nature, 2016, vol. 529, issue 7587, 519-522

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.

Date: 2016
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DOI: 10.1038/nature16453

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