Additional file 1 of The influence of feeding ecology and location on total mercury concentrations in Eurasian perch (Perca fluviatilis)

Additional file 1: Table S1. Quality assurance with biota reference material ERM-CE278k and ERM-BB422 within current study; Table S2. Trophic levels found in the available literature; Table S3. Computed ratios of source contribution in the final mixture (perch dorsal muscles), data obtained by means of Bayesian mixing model SIAR; Table S4. List of collected organisms and measured total mercury (THg) concentration, carbon and nitrogen isotopic values; Table S5. Estimated regression parameters (intercept and slope values), standard errors, t-values and P-values for the Gaussian GAM presented in Eqs. (1, 2, 3).