Fig. 2

Abundance (left; a & c) and µg dry weight (right; b & d) of all benthic organisms per microcosm after week 1 (top; a & b) and week 2 (bottom; c & d). Boxplots showing the upper (75%) and lower (25%) quartiles and the median (horizontal line) for the ten replicates (shown as dots) from the controls and the larval treatments with stream or pond larvae. Different letters above the plots indicate significant differences (p < 0.05).