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  • Title: Robotic observations of enhanced carbon biomass and export at 55 degrees during SOFeX.
    Author: Bishop JK, Wood TJ, Davis RE, Sherman JT.
    Journal: Science; 2004 Apr 16; 304(5669):417-20. PubMed ID: 15087544.
    Abstract:
    Autonomous floats profiling in high-nitrate low-silicate waters of the Southern Ocean observed carbon biomass variability and carbon exported to depths of 100 m during the 2002 Southern Ocean Iron Experiment (SOFeX) to detect the effects of iron fertilization of surface water there. Control and "in-patch" measurements documented a greater than fourfold enhancement of carbon biomass in the iron-amended waters. Carbon export through 100 m increased two- to sixfold as the patch subducted below a front. The molar ratio of iron added to carbon exported ranged between 10(4) and 10(5). The biomass buildup and export were much higher than expected for iron-amended low-silicate waters.
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