Areas with high nutrient concentrations, here the phosphate concentration as an example. Areas colored red stand for high, purple colored areas stand for low nutrient concentrations. Specified in millimoles of phosphate per cubic meter.
Global distribution of the marine chorophyll concentration as an average for the period January 1998 to December 2006. Red areas correspond to high concentrations, purple areas to low concentrations. Specified in milligrams of chlorophyll per cubic meter. The chlorophyll concentration serves as an indicator for the amount of phytoplankton present. Note the logarithmic division of the color scaling.
Phoebe J. Lam, James KB Bishop: The continental margin is a key source of iron to the HNLC North Pacific Ocean. In: Geophysical Research Lett. , 35, 2008, S. L07608, doi: 10.1029 / 2008GL033294 .
Individual evidence
↑ Inga Hense: Plankton dynamics in the Southern Ocean: numerical investigations with a hierarchy of biological-physical models . Bremen 2002, DNB 964278588 , hdl: 10013 / epic.15753 (dissertation, University of Bremen).