Community composition of ammonia oxidizing archaea in Barataria and Terrebonne Bays in 2015 and 2016

This dataset contains relative abundances (%) of terminal restriction fragments of the ammonia monooxygenase genes (amoA) from ammonia-oxidizing archaea (AOA) collected from 12 marshes in Terrebonne Bay (TB), western Barataria Bay (WB), and eastern Barataria Bay (EB), LA. In each region, we sampled two 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. Each sample was analyzed by Terminal Restriction Fragment Length Polymorphism (TRFLP) of the amoA genes. Samples were collected in July 2015 and July 2016.