Metagenomic analysis of oil-contaminated sediment collected at the Chandeleur Islands in the Gulf of Mexico on 2018-05-07

Subtidal and marsh sediment cores were collected at the Chandeleur Islands in the Gulf of Mexico (29.895448 N 88.827780 W) on 2018-05-07, eight years after the Deepwater Horizon (DWH) oil spill. Sediment cores were extruded in 1-2 cm sections from the sediment-water interface to 12 cm below. Oil was visible ~ 4-6 cm below the sediment surface. DNA was extracted from triplicate cores and analyzed by Illumina MiSeq amplicon sequencing.