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Triplot presentation of the co-inertia analysis (CIA) of eight metal concentrations in the sediment and E. danica and their biota sediment accumulation factor performed on 16 samples [four sites, SK1-SK4, sampled in spring (sp), summer (su), autumn (a), and winter (w)]. The ordination diagram of eight normalized metal concentrations in the sediment (Ass, Cds, Crs,Cus, Fes, Mns, Nis, and Pbs) in the CIA is represented by grey arrows projected onto the F1 × F21 factorial map. Positions of metal concentrations in E. danica (AsE, CdE, Crs,CuE, FeE, MnE, NiE, and PbE) and their BSAF (AsB, CdB, CrB,CuB, FeB, MnB, NiB, and PbB) are also plotted onto the CIA F1 × F21 plane. Standardized co-inertia scores of sediment and E. danica data for each sample (black arrows) are projected onto the F1 × F22 factorial map. Origin of the arrow indicate the position of the sample as ordinated by metal concentrations in the sediment, while the arrowhead indicate its position as ordinated by the values of metal concentrations in E. danica and their BSAF.
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