... of Water and Environment Technology, Vol.2, No.2, 2004 Therefore, we investigated successional development of nitrifying bacterial community structure and in situ nitrifying activities in biofilms ... distributions of in situ nitrifying activities were determined The relationship between the spatial organization of nitrifying bacterial populations and the in situ activity of these populations within ... diversity of ammonia-oxidizing bacteria The phylogenetic microbial diversity of two types of nitrifying biofilms, a domestic wastewater and an autotrophic nitrifying biofilms, were determined by...