Fig. 2From: A comparative study of ammonia-oxidizing archaea and bacteria in acidic and alkaline purple soilsRarefaction analysis of bacterial and archaeal amoA- positive clones for clone libraries of acidic (ACI) purple soils and alkaline (ALK) purple soils using Analytic Rarefaction software. AmoA Gene encoding ammonia monooxygenase, AOB ammonia-oxidizing bacteria, AOA ammonia-oxidizing archea, OTU operational taxonomic unit Back to article page