Table S1 List of the species or group of species considered in our studies, and composition of the five communities considered.

Text S2 Details of the cluster analysis leading to the split of the broad fish guild into three trait-defined guilds.

Text S3 Details of the model selection, model formulation and model evaluation, including an analysis of the spatial patterns in the data and in the residuals.

Appendix S4 Exhaustive set of figures for the comparison across the modelling options, including all evaluation years and criteria. See readme for details.

Figure S5 Species richness predictions for the low-fecundity guild, the high-fecundity guild and the all-fishes guild obtained under all environmental scenarios considered in this study.

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