Abundance of ammonia oxidizers and methane oxidizers in Louisiana salt marshes, May to September 2012.

This dataset contains values for abundances of ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA), and methane-oxdizing bacteria (MOB) 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. Each sample was analyzed for abundance of AOB (betaproteobacterial amoA genes), AOA (archaeal amoA genes), and MOB (pmoA genes). Marshes in TB were sampled monthly from May to September 2012, and the WB and EB marshes were sampled in July and September 2012.