Supplementary Material

Supplementary Table S1. Table of Spearman correlation coefficients between environmental parameters.

Supplementary Fig. S2. Results of gradient forest for altitude (alt, log scale). The specific cumulative importance indicates the locations of potential thresholds in the responses of the different fish species to the gradients. The specific response of Squalius cephalus is shown as example. Plain lines are local regressions on strictly positive BPUE values and dashed lines are probabilities of presence along the gradients.

Supplementary Fig. S3. Specific responses of the 20 species taken into account in gradient forest, to the 6 most important physico-chemical parameters. Plain lines are local regressions on strictly positive BPUE values and dashed lines are probabilities of presence along the gradients.

© V. Roubeix et al., Published by EDP Sciences 2017