Fig. 4
a Stable isotope bi-plots illustrating the isotopic niche based on different tissue sections of Ephemera danica. The lines enclose the standard ellipse area (SEAc). b Bayesian estimates of the size corrected ellipse area (SEAc). Shaded density plots represent 50, 75 and 95% credible intervals in decreasing order of size, with SEAB mode (standard ellipse area) indicated by a black circle and SEAc by a red square. Ad abdomen, Hd head and Wn wing