Fig. 3.

The three most commonly recovered topologies for major polar centric diatom clades. The four large boxes correspond to the four different taxon occupancy treatments, and each column represents a different column occupancy treatment (table 1). Each data treatment was analyzed with ASTRAL (top row), ASTRAL-MLBS (middle row), or IQ-TREE with a concatenated matrix (bottom row). The recovered topology for each analysis is identified by the shading or stippling according to the top panel. Empty boxes correspond to three other minority topologies (see supplementary file 2, Supplementary Material online, for full results).