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.本数据集涵盖多项化学与微生物学参数数据，包括沉积物孔隙水中硫化氢、氧气、氧化还原电位（Eh）及pH值的浓度，总石油烃（TPH）含量，以及美国密西西比州与路易斯安那州境内受深水地平线石油泄漏事故溢油影响的4处湿地的厌氧/需氧土壤微生物群落信息。这4处湿地分别为：盐盘岛（SP）、马什角（MP）、卡特岛（CI）及斯基夫岛（SI）。在马什角（MP）站点，针对沉积物孔隙水开展了为期三年（2010-2012年）的时序研究。在每个湿地的可见溢油区域，均采集了20厘米深的土壤岩芯；采用微电极法测定沉积物孔隙水参数后，以1厘米为间隔对岩芯进行剖面表征，并在厌氧条件下将岩芯切割为2厘米的切片段。对每一段2厘米的岩芯切片，均开展了总石油烃（TPH）及需氧/厌氧微生物群落的分析。所有采样站点均记录了水柱温度、溶解氧及盐度数据。本数据集已在GRIIDC完成注册，编号为R3.x174.000:0004。