Denitrification in Stream Biofilm and Sediment: In Situ Variation and Control Factors

  • Jan Sørensen
  • Niels Peter Revsbech
Part of the Federation of European Microbiological Societies Symposium Series book series (FEMS, volume 56)


Seasonal and diurnal variations of denitrification activity have been studied in sediments from lakes (Christensen and Sørensen, 1986), estuaries (Jørgensen and Sørensen, 1988) and other near-coastal areas (Andersen et al., 1984). Only recently, denitrification has also been determined in riverine systems including sediment and epilithic biofilms (Christensen et al., 1989; Christensen et al., in press; Duff et al., 1984; Nielsen et al., in press; Sørensen et al., 1988). Direct measurements of the process is essential to provide detailed information about temporal and spatial variation and to evaluate the important factors of environmental control. It is often possible to judge the relative influence of primary control parameters such as temperature, substrate availability (nitrate and organic matter) and O2 inhibition. Sometimes, even the effects of changes in the biological community, e.g. shifts in benthic algae metabolism, bioturbation and grazing effects by animals, effects of plant metabolism in the rhizosphere, etc. can be observed.


Denitrification Rate Stream Sediment Dark Incubation Denitrification Activity Microbial Ecol 
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Jan Sørensen
    • 1
  • Niels Peter Revsbech
    • 2
  1. 1.Department of Ecology and Molecular Biology Section of MicrobiologyRoyal Veterinary and Agricultural UniversityFrederiksberg CDenmark
  2. 2.Department of Ecology and GeneticsUniversity of AarhusAarhus CDenmark

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