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Appl Environ Microbiol. 1983 October; 46(4): 957-960
Copyright © 1983, American Society for Microbiology. All Rights Reserved.

Effect of Storm Events on Benthic Nitrifying Activity

Water and Soil Science Centre, Ministry of Works and Development, Hamilton, New Zealand

ABSTRACT

Storm events resulted in a marked reduction in the benthic nitrifying activity of a stream receiving geothermal inputs of ammonium. Subsequently, nitrifying activity demonstrated a logarithmic increase until a stable activity was reached 10 to 12 days after the storm event. The rate of increase of poststorm nitrifying activity was used to calculate the nitrifier growth rate in situ (0.0075 to 0.0116 h^–1) which was lower than the growth rates observed for laboratory cultures of nitrifying bacteria isolated from the sediments (0.0233 to 0.0990 h^–1).