Fig 3. Principal Coordinate Analysis of microbial community structure from all samples based on a subsample of 7,676 sequences determined via theta-yc dissimilarity.

Myrtle Beach samples are depicted as dark gray, Garden City as black, and Pawleys Island as white. Taxa displayed are those that significantly influenced (p < 0.001) the ordination of the different samples. Clustering was determined via Analysis of Molecular Variance (AMOVA) using mothur. Shapes correspond to particular sampling dates: squares for September 2016, diamonds for January 2017, triangles for April 2017, and circles for September 2017.