Iron-binding by dissolved organic matter in the Western Tropical South Pacific Ocean (GEOTRACES TONGA cruise GPpr14)

• Published in: Frontiers in Marine Science Vol. 11
• Main Authors: Mahieu, Léo, Whitby, Hannah, Dulaquais, Gabriel, Tilliette, Chloé, Guigue, Catherine, Tedetti, Marc, Lefevre, Dominique, Fourrier, Pierre, Bressac, Matthieu, Sarthou, Géraldine, Bonnet, Sophie, Guieu, Cécile, Salaün, Pascal
• Format: Journal Article
• Language: English
• Published: Lausanne Frontiers Research Foundation 14.02.2024; Frontiers Media; Frontiers Media S.A
• Subjects: Analytical methods; Bioavailability; Chemical analysis; Chemistry; Chlorophyll; Competition; Detoxification; diazotroph; Dissolved organic matter; Earth Sciences; Electrons; Heavy metals; humic substances; hydrothermal; Hydrothermal vents; Iron; iron-binding ligands; Ligands; Mixed layer; Oceanography; Oxidation; Phytoplankton; Plankton; Primary production; remineralization; Residence time; Sciences of the Universe; Seawater; Speciation; Trace metals; voltammetry; Water analysis; South Pacific; Pacific Ocean

Iron (Fe) is an essential micronutrient for phytoplankton growth, but its scarcity in seawater limits primary productivity across much of the ocean. Most dissolved Fe (DFe) in seawater is complexed with Fe-binding organic ligands, a poorly constrained fraction of dissolved organic matter (DOM), whic...