Origin of the ITS sequences used to infer the global phylogeography of Microcystis.

Only the populations indicated with an asterisk were used in the restricted dataset correcting for differences in sample size (asterisk in the column ‘number of sampled lakes’ indicates the number of lakes selected in the restricted dataset). Climates were classified according to Köppen-Geiger. Main climates: A = equatorial, B = arid, C = warm temperate, D = snow, E = polar. Precipitation: S = steppe, f = fully humid, s = summer dry, w = winter dry. Temperature: a = hot summer, b = warm summer, c = cool summer, h = hot arid. T = polar tundra.