Fig. 2: Bioavailability of dissolved iron (dFe) in the 12 seawater types probed with seven iron-limited phytoplankton species under dim laboratory light.
From: Insights into the bioavailability of oceanic dissolved Fe from phytoplankton uptake kinetics
a Individual dFe bioavailability proxies (kin-app/S.A.) in all tested water types (abbreviated on the x axis), derived from Fe uptake rates of various Fe-limited phytoplankton (abbreviated in the legend). b Average dFe bioavailability (average kin-app/S.A.) of all phytoplankton species as a function of water types, colored according to the classes of ligands present in each sample. Error bars are 1 standard deviation of the average. Phytoplankton species: Prorocentrum micans (PM), Thalassiosira weissflogii (TW), Thalassiosira oceanica (TO), Thalassiosira pseudonana (TP), Chrysochromulina polylepis (CP), Phaeocystis pouchetii (PP), and Micromonas sp. (MIC). Seawater samples: Arctic—Baffin Bay (BBA), Canadian Arctic Archipelago (CCA), Beaufort Sea (BS); North Pacific—Line-P stations—P16, P20 surface (P20_Surf), P20 depth (P20_Deep); Southern Ocean (SO); Atlantic—Gulf of Mexico (GOM), GEOTRACES GA03 Atlantic Zonal Transect (GTNA); Equatorial Pacific—GEOTRACES GP16 Oxygen Depleted Zone (EPZT_ODZ), surface (EPZT_Surf), and depth (EPZT_Deep).
