Research on microbial communities at Mount Rittmann fumaroles has found bacteria including cyanobacteria, fungi including yeast and cyanobacterial microbial mats. Algae and protozoa have been identified at Mount Rittmann fumaroles. The bacterial species Anoxybacillus amylolyticus and the subspecies Alicyclobacillus acidocaldarius subsp. rittmannii were discovered at fumaroles of Mount Rittmann, and the bacterium Bacillus fumarioli was cultured from Mount Rittmann and Mount Melbourne. Alicyclobacillus acidocaldarius subsp. rittmannii is used in studied of thermophilic enzymes. Another thermophilic bacteria reported from Mount Rittmann is Aneurinibacillus terranovensis.