Phytoplankton (IMAGE)

Proceedings of the National Academy of Sciences

Phytoplankton

Caption

These are phytoplankton grown in the lab with no iron (leftmost bottle), iron from nonglacial dust (second and third from left), and iron from glacial dust (fourth and fifth from left), showing that the chemical form of iron in glacial dust supports higher growth than that in nonglacial dust.

Credit

Elizabeth M. Shoenfelt

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