Fig. 3.

Clustering of genes, which showed an interaction between two stressors. The expression significantly differed from expectations based on the single stressor effects due to the interaction between salinity and flow (a-c), sediment and salinity (d) or sediment and flow (e). The z-score represents the scaled and centred gene expression. Positive and negative z-scores indicate expression values above and below the average across samples, respectively. Pale lines connect expression values of individual genes, bold lines the average expression values