ESTIMATIONS OF DENITRIFICATION AND ANAMMOX RATES BY USING THE REVISED ISOTOPE PAIRING TECHNIQUE IN TIDAL FLAT

Abstract

  As nutrients fluxes of the tidal flat in the Tokyo Port Wild Bird Park, it is reported that the Nitrogen is consumed of the tidal flat. In order to know the mechanism of nutrient cycles, we carried out the estimations of denitrification and anammox rates of the flat by using revised Isotope Paring Technique(r-IPT) method in June, August and December, 2010. As results of the study, the denitrification rate is 112 to 935 μmol N/m²/h. And the anammox rate is about one-third to half of the denitrification rate. It is thought that the main cause of Nitrogen consumption of the flat is the denitrificatiopn and the anammox.