Fig. 2

Boxplot of results of Bayesian mixing models on the use of terrestrial vs. marine resources (%) by macrofauna species in the salt marsh of Spiekeroog in (a) April, (b) July and (c) October. Left panel (white boxes) = upper salt marsh (USM), right panel (grey boxes) = lower salt marsh (LSM). Boxes represent the 68% confidence intervals, error bars 95% confidence intervals; the solid horizontal line represents the mean, the dashed horizontal line the median