Spatial and temporal distribution of trace elements in Padina pavonica from the northern Adriatic Sea
2021
Orlando Bonaca, Martina | Pitacco, Valentina | Bajt, Oliver | Falnoga, Ingrid | Hudobivnik, Marta Jagodic | Mazej, Darja | Šlejkovec, Zdenka | Bonanno, Giuseppe
Chemical pollution is a major environmental concern especially in coastal areas, having adverse impacts on marine organisms and ecosystem services. Macroalgae can accumulate trace elements, but available studies are restricted to a limited number of elements and species. The goal of this research was to assess, seasonally, the concentrations of 22 elements in the brown alga Padina pavonica from monitoring sampling sites in Slovenian waters. The concentration of most elements in thalli differed significantly between spring and autumn, with generally higher levels in autumn samples. However, it was not possible to correlate these concentrations with the ecological status of macroalgae. The maximum values set by European regulations for the potentially hazardous As, Cd and Hg in food and feed were never exceeded, while Pb concentrations were slightly higher. The results show that P. pavonica can act as an effective bioindicator of chemical pollution.
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