January. The area, bounded to the north by the Sub-Antarctic Front, is the most northerly of
the areas of regular high productivity in the otherwise high-nutrient low-chlorophyll Southern
Ocean. Chlorophyll concentrations are at background values to the south and only slightly
enhanced over the shallow plateau, producing three contrasting productivity regimes. The
CROZet natural iron bloom and EXport experiment (CROZEX) project was aimed at testing …