An idealized model of nitrogen recycling in marine sediments

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ID: 294768
1982
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Abstract
A model of the interdependent processes involved in nitrogen mineralization in marine sediments is presented, based on data collected in the sandy sediments of the North Sea. It relates the flux of organic material deposited in the sediments to the release of dissolved nitrogen to the overlying water, given the mixing conditions undergone by the solid and interstitial phases of the sediment under the action of physical or biological processes. Although idealized, the model can be useful in predicting the trends of variation in the relative importance of ammonification, nitrification, and denitrification, as a result of variations in the organic matter input to the bottom. It shows that, at low input of organic matter, most nitrogen release occurs as nitrate, whereas, at higher input, ammonium release prevails. Denitrification reaches a plateau above a certain input of organic material. It can involve an appreciable proportion (more than about 30 percent of the flux) of remineralized nitrogen only at high organic input and when a high nitrate concentration exists in the overlying water.
Reference Key
openalex_W2076501225 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gilles Billen
Journal american journal of science
Year 1982
DOI
10.2475/ajs.282.4.512
URL
https://doi.org/10.2475/ajs.282.4.512
Keywords Keywords not found

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