Fig. 4: Summary and synthesis.
From: Insights into the bioavailability of oceanic dissolved Fe from phytoplankton uptake kinetics

a Schematic representation of the major reactions at play, which govern the rate of uptake of iron (Fe) from inorganic (Fe′) and organic (FeL) complexes by Fe-limited phytoplankton, and subsequently determine the dFe bioavailability proxy—kin-app/S.A. b Summary of all data evaluating dFe bioavailability across all water types from this study in dim laboratory light and in outdoor full light, plotted within the framework of the bioavailability envelope of [16]. Symbols represent individual phytoplankton strains as in Fig. 2a. See Table 1 for seawater type descriptions.