DNA-seq of nitrous oxide reducers and bacterial ammonia-oxidizers:  wastewater
Primers: nosZ 1F & 1662R (Geets et al 2007)and amoA 1F and amoA 862R  (Junier et al. 2009); Caporaso et al. 2010, Nat. Methods; QIIME 1.9.1;  Caporaso et al. 2010, Nat. Methods