a Partial least square analysis plot showing the correlation of all taxa (columns), clustered by Kendall’s tau correlation coefficient, in the grey (winter) and blue (autumn) subnetworks (leaf colour) with environmental variables (rows). The heatmap is coloured by the value of the correlation coefficient, see colour key. The asterisks represent the top 10% most connected taxa in each subnetwork (above the red horizontal line in (b) and (c)). b, c The correlation of the connectedness or centrality of each taxon within the blue (b) and the grey (c) subnetworks correlated to temperature and chlorophyll a, respectively. Symbols correspond to the trophic levels shown in the legend.