Figure 5. The temporal relationship between richness of native plant macrofossils and E. canadensis abundance at the within-lake scale in a) Castle Lough and the central Upper Lough Erne–ULE (Group 1 of lakes); b) Cornabrass Lough and Killymackan Lough (Group 2 ); and c) Gole Lough and Head Lough (Group 3 ). Pearson correlation coefficients and significance for each analysis are indicated on each plot. *p<0.05; **p<0.01; ***p<0.001.