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Dust, Iron, and Nitrogen Fixers in the South Pacific

Dust, Iron, and Nitrogen Fixers in the South Pacific

The South Pacific Gyre is an oceanographic desert. Inward-spiraling currents push surface waters downward, prevent nutrient-rich waters from reaching the sunlit oceans, and inhibit plankton growth. It’s also about as far from the continents as you can get. So, atmospheric dust inputs are extremely low – and as a result, so are the inputs of micronutrients like iron, which are critical for the few biota that are around to conduct biochemical processes like nitrogen fixation. In 2015-2016, I sailed on…

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