Community composition of archaeal ammonia oxidizers in Louisiana salt marshes two years after the Deepwater Horizon oil spill

This dataset contains relative abundances (%) of terminal restriction fragments of the ammonia monooxygenase genes (amoA) from ammonia-oxidizing archaea (AOA). Data are from sediments collected from 13 marshes in Terrebonne Bay (TB), western Barataria Bay (WB), and eastern Barataria Bay (EB), LA. In TB and EB, we sampled two oiled marshes and two unoiled marshes, and in WB we sampled three oiled marshes and two unoiled marshes. At each marsh, we collected 5-cm deep soil cores along a 20-m transect from the marsh edge and collecting soil samples every 5 m. Marshes in TB were sampled approximately monthly from May to September 2012, and the WB and EB marshes were sampled in July and September 2012.本数据集包含氨氧化古菌（ammonia-oxidizing archaea, AOA）的氨单加氧酶基因（ammonia monooxygenase genes, amoA）末端限制性片段的相对丰度（以百分比计）。数据采自美国路易斯安那州（LA）Terrebonne湾（TB）、Barataria湾西部（WB）与Barataria湾东部（EB）的13处沼泽沉积物，其中TB与EB区域各布设2处受溢油污染沼泽及2处未受溢油污染沼泽，WB区域则布设3处受溢油污染沼泽与2处未受溢油污染沼泽。针对每处沼泽，研究人员从沼泽边缘沿20米样带采集5厘米深的土壤岩芯，并每间隔5米采集一份土壤样本；TB区域的沼泽于2012年5月至9月期间约每月采样一次，WB与EB区域的沼泽则于2012年7月和9月完成采样。