Sample Sequencing Plan.

a Sequencing plan for both exposed and submerged sands

b Month abbreviations: Jun = June, Aug = August, Sep = September, Nov = November.

c At each beach, three sand samples (A, B, C) were collected at each of three sites (1, 2, 3) located approximately 100 m apart.

d 1A+2A, indicates the 1A sample and 2A sample were combined in equal weight proportions prior to DNA extraction.

e At each beach, three water samples (1, 2, 3) were collected approximately 100 m apart

Sample Sequencing Plan.