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An experiment on the relative importance of denitrification, nitrate reduction and ammonification in coastal marine sediment
Goeyens, L.; De Vries, R.T.P.; Bakker, J.F.; Helder, W. (1987). An experiment on the relative importance of denitrification, nitrate reduction and ammonification in coastal marine sediment. Neth. J. Sea Res. 21(3): 171-175
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
Peer reviewed article  

Also published as
  • Goeyens, L.; De Vries, R.T.P.; Bakker, J.F.; Helder, W. (1988). An experiment on the relative importance of denitrification, nitrate reduction and ammonification in coastal marine sediment, in: IZWO Coll. Rep. 18(1988). IZWO Collected Reprints, 18: pp. chapter 5, more

Available in Authors 
    VLIZ: Open Repository 133985 [ OMA ]

Keywords
    Ammonia; Biogeochemical cycle; Coastal zone; Denitrification; Nitrates; Nitrogen cycle; Sediments; Marine

Authors  Top 
  • Goeyens, L., more
  • De Vries, R.T.P.
  • Bakker, J.F.
  • Helder, W.

Abstract
    Simultaneous determinations of 15N-nitrogen gas production, 15N-ammonia formation by nitrate reduction and ammonia production from organic nitrogen were carried out after addition of 15N-nitrate to anaerobically incubated sediment slurries from a location in the Dutch Wadden Sea. The rate of nitrogen gas production was 1.75 µmol N.cm-3 wet sediment.d-1, nitrate reduction to ammonia occurred to a rate of 0.79 µmol N.cm -3.d -1 and ammonification at 1.17 µmol N-cm -3.d -1. At the end of the incubation experiment (after 30 h) 63% of the originally added 15N-nitrate was present as nitrogen gas, 32% ended up as ammonia and ~ 4% as particulate organic nitrogen. Ammonia production by degradation of organic nitrogen compounds was the most important process in building up the ammonia pool in the anaerobic sediment incubation.

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