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Effects of floods resulting from climate change on metal concentrations in whiting (Merlangius merlangus euxinus) and red mullet (Mullus barbatus) and health risk assessment

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Abstract

In this research, the effect of flooding caused by heavy precipitation, postulated to be one of the consequences of climate change, on toxic metal concentrations in two demersal fish species, whiting (Merlangius merlangus euxinus) and red mullet (Mullus barbatus), was investigated. For both demersal fish species, concentrations of Hg, Fe, Cd, Pb, Se, Al, Zn, Cu, Sr, B, Cr, Mn, Ni, Ba, and Li were compared between samples taken from Türkeli, Sinop, Black Sea, before and after the flood event in August 2021. Hg, Mn, Se, Li, B, and Sr metal concentrations increased in whiting and in red mullet in the post-flood samples. Estimated daily intake, target hazard quotient, cancer risk, the maximum allowable daily consumption rate and minimum daily requirements, and health risk analyses indicated that daily consumption of whiting and red mullet was risky due to the heavy metal Hg level after the flood. In addition, it was found that the samples had higher levels of Se than Hg, Se/Hg ratios were above 1, and Se-HBV were positive. Therefore, whiting and red mullet fishing should be restricted for a limited time period in the region.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Hünkar Avni Duyar: conceptualization, methodology, preparation, writing original draft, resources, writing, review and editing, finalizing manuscript

Baris Bayrakli: conceptualization, methodology, formal analysis and investigation, writing original draft preparation, resources, finalizing manuscript

Mutlu Altuntaş: statistical analysis, writing, review and editing, finalizing manuscript

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Correspondence to Baris Bayrakli.

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Duyar, H.A., Bayrakli, B. & Altuntas, M. Effects of floods resulting from climate change on metal concentrations in whiting (Merlangius merlangus euxinus) and red mullet (Mullus barbatus) and health risk assessment. Environ Monit Assess 195, 979 (2023). https://doi.org/10.1007/s10661-023-11534-w

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  • DOI: https://doi.org/10.1007/s10661-023-11534-w

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