Also: iron hypothesis, IronEx, SOIREE
Field experiments adding iron to iron-poor ocean regions to test whether it triggers plankton blooms.
Only what the cited papers report.
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Coale and colleagues added iron to the equatorial Pacific and triggered a massive phytoplankton bloom, supporting the hypothesis that growth there is limited by iron.
As reported in: Coale, Johnson, Fitzwater et al. (1996). A massive phytoplankton bloom induced by an ecosystem-scale iron fertilization experiment in the equatorial Pacific Ocean. Nature. doi:10.1038/383495a0
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Boyd and colleagues fertilized a patch of the polar Southern Ocean with iron, raising phytoplankton biomass and causing a large drawdown of CO2 and nutrients.
As reported in: Boyd, Watson, Law et al. (2000). A mesoscale phytoplankton bloom in the polar Southern Ocean stimulated by iron fertilization. Nature. doi:10.1038/35037500