Fig. 1

Haplotype networks (N#) of the lichenized green alga Diplosphaera chodatii from Payuk Lake, Canada using the internal transcribed spacer regions (ITS) 1, ITS2 and β-actin protein coding gene region markers. Different colors represent the different networks for each of the markers used. Letters followed by numbers correspond to the sample that was collected. Squares represent the first and dominant haplotype designated to a network, circles with samples represent related haplotypes (size is proportional to the number of samples that have the haplotype), and small hollow circles represent single base pair changes from the dominant haplotype