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Ocean chemistry

Fingerprints of a trace nutrient

Lack of dissolved iron in the sea limits biological productivity and the uptake of carbon dioxide. The sources of dissolved iron in the North Atlantic Ocean have been identified from isotopic variations of this trace nutrient. See Letter p.212

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Figure 1: Saharan dust blows north of the Canary Islands.

Jacques Descloitres, MODIS Rapid Response Team, NASA/GSFC

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Correspondence to Joseph A. Resing or Pamela M. Barrett.

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Resing, J., Barrett, P. Fingerprints of a trace nutrient. Nature 511, 164–165 (2014). https://doi.org/10.1038/nature13513

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