Publication Date:
2020-01-14
Description:
Transition metals and trace metals enter the ocean via river runoff, wind-blown dust, diffusion from sediments, hydrothermal inputs and anthropogenic activities. Some of these metals (e.g., Fe, Mn, Co) are essential micronutrients needed by phytoplankton. Micronutrient metals, as well as metals like Hg, Pb, and Ag, which have no biochemical role, can be toxic at enhanced concentrations. The chemical and physical speciation of the metals determines their geochemical behavior and availability to marine microorganisms. Complexation by inorganic and organic ligands hence has a strong influence on metal behavior. The GEOTRACES Programme is transforming our global view of metal behavior, sinks and sources in the ocean, through detailed observations along full ocean sections.
Type:
Book chapter
,
NonPeerReviewed
DOI:
10.1016/B978-0-12-409548-9.11394-6
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