Sedimentary Pore-Water pH, Redox Potential, and Concentrations of Hydrogen Sulfide, Oxygen, and Total Petroleum Hydrocarbons, and Anaerobic and Aerobic Microbial Activity from 4 Northern Gulf of Mexico Sites 2010 to 2012

This dataset contains values for chemical and microbial parameters including sediment porewater concentrations of hydrogen sulfide, oxygen, Eh, and pH; total petroleum hydrocarbons; and anaerobic/aerobic soil microbial communities from four wetland locations that were oiled from the Deepwater Horizon Oil Blowout in Mississippi and Louisiana: Salt Pan Island (SP), Marsh Point (MP), Cat Island (CI), and Skiff Island (SI). In MP, temporal studies were conducted for sediment porewaters over three years (2010-2012). At each marsh, 20-cm deep soil cores were collected at locations had observable oiling. Cores were profiled at 1cm increments for sediment porewaters measured using microelectrodes and then sliced into 2-cm sections under anaerobic conditions. Each 2-cm section was analyzed for TPH and aerobic/anaerobic microbial communities. At all locations water column temperature, dissolved oxygen, and salinity was recorded. This dataset is also registered with GRIIDC as R3.x174.000:0004.