Fig. 3. Net effect of litter conversion into faeces on physicochemical characteristics.
Net differences in principal component (PC) scores (see Fig. 2) between faeces and the leaf litter from which they were derived as a function of litter PC1 scores (a) and PC2 scores (b) for all combinations of litter and detritivore species (mean ± SE; n = 3). Differences above the black dotted lines are significantly positive, and differences below the black dashed line are significantly negative. Numbers in brackets indicate the relative frequency of non-significant differences (=), positive differences (↑) and negative differences (↓). %SS (percentage of total sum of squares) and asterisks (ns: P > 0.05; ***P < 0.001) indicate the variance and P value associated with the effect of litter quality (PC scores), detritivore species and their interaction in a two-way ANCOVA. Thick black lines represent the regression lines for all treatments, with grey areas representing the 95% confidence intervals of regression lines. Grey lines represent the regression line for each detritivore species separately, each labelled with the first two letters of the detritivore genus name.
