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Conceptual understanding of nitrogen cycling in the coastal zone

Nitrogen cycling was evaluated in a coastal setting, at the interface of a nitrate containing aquifer and a coastal marine environment. Methods and procedures were developed and evaluated to quantify the discharge of freshwater and of nitrate into the marine environment and the biogeochemical processes that may modify the nitrate concentration. Various models were developed and tested to quantitatively describe the physical and chemical processes at the freshwater/seawater interface. The overall results indicate that there is a potential for significant discharge of groundwater nitrate into the marine environment. However, depending on the local biogeochemical conditions, a major part of the nitrate becomes reduced to free nitrogen during passage of the shore-face.

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Institute of Environment & Resources, Technical University of Denmark
Building 115
2800 Kgs. Lyngby
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