RT Journal Article T1 Interaction of Naturally Occurring Phytoplankton with the Biogeochemical Cycling of Mercury in Aquatic Environments and Its Effects on Global Hg Pollution and Public Health A1 Gojkovic, Živan A1 Simansky, Samuel A1 Sanabria, Alain A1 Márová, Ivana A1 Garbayo Nores, Inés A1 Vílchez Lobato, Carlos AB The biogeochemical cycling of mercury in aquatic environments is a complex process drivenby various factors, such as ambient temperature, seasonal variations, methylating bacteria activity,dissolved oxygen levels, and Hg interaction with dissolved organic matter (DOM). As a consequence,part of the Hg contamination from anthropogenic activity that was buried in sediments is reinsertedinto water columns mainly in highly toxic organic Hg forms (methylmercury, dimethylmercury,etc.). This is especially prominent in the coastal shallow waters of industrial regions worldwide.The main entrance point of these highly toxic Hg forms in the aquatic food web is the naturallyoccurring phytoplankton. Hg availability, intake, effect on population size, cell toxicity, eventualbiotransformation, and intracellular stability in phytoplankton are of the greatest importance forhuman health, having in mind that such Hg incorporated inside the phytoplankton cells due tobiomagnification effects eventually ends up in aquatic wildlife, fish, seafood, and in the human diet.This review summarizes recent findings on the topic of organic Hg form interaction with naturalphytoplankton and offers new insight into the matter with possible directions of future researchfor the prevention of Hg biomagnification in the scope of climate change and global pollutionincrease scenarios. PB MDPI SN 2076-2607 (electrónico) YR 2023 FD 2023-08 LK https://hdl.handle.net/10272/22468 UL https://hdl.handle.net/10272/22468 LA eng NO Gojkovic, Z., Simansky, S., Sanabria, A., Márová, I., Garbayo, I., & Vílchez, C. (2023). Interaction of Naturally Occurring Phytoplankton with the Biogeochemical Cycling of Mercury in Aquatic Environments and Its Effects on Global Hg Pollution and Public Health. In Microorganisms (Vol. 11, Issue 8, p. 2034). MDPI AG. https://doi.org/10.3390/microorganisms11082034 NO This research was funded by the Spanish Ministry of Economic Transformation, Industry,Knowledge and Universities; by the European Regional Development Fund (FEDER) within theframework of the FEDER program of Andalusia (Spain) 2014–2020 (grant number: UHU–202065);and by grant P20-00930 from the Andalusian Plan for Research, Development and Innovation, withinthe frame of the operational program “FEDER Andalucía 2014–2020”. The work of S.S. was supportedby project number FCH-S-23-8330 of the Faculty of Chemistry, Brno University of Technology, Brno,Czech Republic. DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026