Figure 2
From: A call for refining the role of humic-like substances in the oceanic iron cycle
The concentrations of dissolved iron (blue line) and iron-binding ligands (green circles, where available), with an envelope (red) for electroactive humic substances (eHS), encompassing the maximum and minimum iron-binding capacities reported for terrestrial IHSS standards13,27. (a) Station P26 in the Northeast Pacific (Line P); (b) Surface samples (~5 m) Northwest Atlantic (Bermuda AE1714), with salinity included below; (c–g) Stations G1-G77 depth profiles from the North Atlantic (GEOVIDE GA01). Error bars show standard deviation, which for eHS is included within the envelope. Spaces in the eHS boundaries show eHS sampling points. Figure generated using Matlab software.
