Resumen

CLOETE, Ryan; DUAN, Jianshu; MYNENI, Satish  y  ROYCHOUDHURY, Alakendra. Molecular-scale Interactions Impact ocean-scale zinc concentrations. S. Afr. j. sci. [online]. 2025, vol.121, n.9-10, pp.1-4. ISSN 1996-7489.  https://doi.org/10.17159/sajs.2025/20922.

SIGNIFICANCE: This Invited Commentary is based on our recently published paper which highlights how different chemical forms of the element, and micronutrient, zinc (Zn) affect its distribution and relationship with major nutrients (phosphate, silicate) within the Southern Ocean. Using novel X-ray techniques to characterise particle-hosted Zn at the molecular scale, Zn chemistry was shown to change with depth, latitude and season. These observations reveal a new dimension to marine Zn cycling, highlighting an underappreciated importance for inorganic Zn phases. The future balance between organic and inorganic Zn phases, mediated in part by climatic changes, will impact the oceans' biological productivity.

Palabras clave : zinc; Southern Ocean; biogeochemical cycling; reversible scavenging; synchrotron X-ray absorption spectroscopy.

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