Nitrification : an introduction and overview of the state of the field / Bess B. Ward -- Ammonia-oxidizing bacteria : their biochemistry and molecular biology / Luis A. Sayavedra-Soto and Daniel J. Arp -- Diversity and environmental distribution of ammonia-oxidizing bacteria / Jeanette M. Norton -- Genomics of ammonia-oxidizing bacteria and insights into their evolution / Martin G. Klotz and Lisa Y. Stein -- Heterotrophic nitrification and nitrifier denitrification / Lisa Y. Stein -- Physiology and genomics of ammonia-oxidizing archaea / Hidetoshi Urakawa, Willm Martens-Habbena, and David A. Stahl -- Distribution and activity of ammonia-oxidizing archaea in natural environments / Graeme W. Nicol, Sven Leininger, and Christa Schleper -- Metabolism and genomics of annamox bacteria / Boran Kartal, Jan T. Keltjens, and Mike S. M. Jetten -- Distribution, activity, and ecology of annamox bacteria in aquatic environments / Mark Trimmer and Pia Engström -- Application of the anammox process / Wouter R. L. van der Star ... [et al.] -- Metabolism and genomics of nitrite-oxidizing bacteria : emphasis on studies of pure cultures and of nitrobacter species / Shawn R. Starkenburg, Eva Spieck, and Peter J. Bottomley -- Diversity, environmental genomics, and ecophysiology of nitrite-oxidizing bacteria / Holger Daims ... [et al.] -- Nitrification in the ocean / Bess B. Ward -- Soil nitrifiers and nitrification / James I. Prosser -- Nitrification in inland waters / Hendriks J. Laanbroek and Annette Bollmann -- Nitrification in wastewater treatment / Satoshi Okabe ... [et al.].