Additional file 15: of Factors driving effective population size and pan-genome evolution in bacteria BobayLouis-Marie OchmanHoward 2018 Figure S12. Network of correlations among genomic and lifestyle variables. The correlation network was built using the P-values obtained from the correlation matrix for these quantitative variables (Additional file 14: Table S3). Each node represents a quantitative variable, and the thickness of edges is proportional to the strength of the correlations, defined as –log(P-value). Correlations with P-values > 0.01 were not included in the network. (PDF 112 kb)