New Insights into the Organic Complexation of Bioactive Trace Metals in the Global Ocean from the GEOTRACES Era

• DOI: 10.5670/oceanog.2024.419
• Publication Date: 2024-05-23T23:46:20Z
• Authors: Hannah Whitby; Jiwoon Park; Yeala Shaked; Rene Boiteau; Kristen Buck; Randelle Bundy
• Keywords: Geotraces; Biogeochemical Cycle; Genetic algorithm; Chemical oceanography; Trace metal

The GEOTRACES program has greatly expanded measurements of dissolved trace metal concentrations across ocean basins, but to understand the behavior and cycling metals their impacts on primary productivity, we must chemical forms in which they are present environment. Organic ligands play a central role speciation marine environment, controlling reactivity bioavailability. Here, an overview contributions made understanding through advancing our knowledge distribution, sources, sinks metal-binding organic global ocean, particularly for iron. Detailed assessments intercalibration methods most commonly applied have allowed integration ligand datasets. Work characterize specific groups within wider pool matter, along with sources sinks, is starting unravel biogeochemical cycles. Recent advances complementary analytical techniques using liquid chromatography mass spectrometry molecular picture bioavailability—and also pose new questions. Moving forward, need address gaps how complexation relates bioavailability order recognize distributions productivity carbon cycle.