Abundance of ammonia oxidizers, methane oxidizers and denitrifiers in Louisiana salt marshes four years after the Deepwater Horizon oil spill (2014)

This dataset contains values for abundances of ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA), methane-oxdizing bacteria (MOB) and denitrifying bacteria (DNB) collected from 12 marshes in Terrebonne Bay (TB), western Barataria Bay (WB), and Port Sulphur in eastern Barataria Bay (PS), LA in July 2014. 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 for abundance of AOB (betaproteobacterial amoA genes), AOA (archaeal amoA genes), MOB (pmoA genes) and DNB (nirS genes).