The proportion of the use of various prey by the predatory macroinvertebrate Saduria entomon (A) and the fish Rutilus rutilus (B) and Abramis brama (C) in the Neva Estuary according to the SIAR model. The dark grey, grey, light grey and white are 95%, 75%, 55% and 5% credibility intervals. The numbers indicate the average percentages in the diet for 95% probability. Cp – Chironomus plumosus, Lh – Limnodrilus hoffmeisteri, Ph – Potamothrix hammoniensis, Mo – Monoporeia affinis, Mar – Marenzelleria arctia, Se – Saduria entomon.