In Situ Measurements of Denitrification in Constructed Wetlands

  title={In Situ Measurements of Denitrification in Constructed Wetlands},
  author={Yuan Xue and David A. Kovacic and Mark B. David and Lowell E. Gentry and Richard Lesley Mulvaney and Charles W. Lindau},
  journal={Journal of Environmental Quality},
Quantitative estimates of denitrification are needed in designing artificial wetlands to optimize nitrate (NO 3 - ) removal. Acetylene blockage and 15 N-tracer methods were employed to quantify denitrification in constructed wetlands receiving agricultural tile drainage, using plastic tubes to enclose in situ mesocosms. Estimates were also made through NO 3 - disappearance from mesocosm water columns. The 15 N and C 2 H 2 methods yielded comparable rates. At 4 to 25°C, and with 9 to 20 mg NO 3… 

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