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Changes in average metal concentrations in the sediment (black bars) and E. danica (grey bars) and their BSAF (dark-grey bars) for arsenic (A), chromium (B), cadmium (C), copper (D), iron (E), manganese (F), nickel (G) and lead (H) at four investigated localities (SK1, SK2, SK3, and SK4) along the Skrapež River. Samples at different localities for each parameter that are significantly different are marked with different letters (a, b, c). A statistically significant difference between metal concentrations in the sediment and E. danica at each locality is marked with an asterisk (*).
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