TY - JOUR
T1 - Evaluation of the nitrogen isotope-pairing method for measuring benthic denitrification: A simulation analysis
AU - Middelburg, J.J.
AU - Soetaert, K.E.R.
AU - Herman, P.M.J.
N1 - Reporting year: 1996
Metis note: 2148; CEME; ES; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1996/Middelburg_ea_2148.pdf
PY - 1996
Y1 - 1996
N2 - The nitrogen isotope-pairing method to measure sedimentary denitrification is evaluated by means of a general diagenetic model that describes the depth distribution of O-2, NH4+, (NO3- )-N-14, and (NO3-)-N-15, among others. The model simulations demonstrate that isotope fractionation effects during denitrification can be neglected, but that nonuniform mixing of added (NO3-)-N-15 with locally produced (NO3-)-N-14 causes underestimation of in situ rates of denitrification. Enrichment of bottom water with (NO3-)-N-15 concentrations above ambient levels not only results in enhanced rates of denitrification, but may also change in situ rates of coupled nitrification- denitrification. However, the resulting rates usually deviate
AB - The nitrogen isotope-pairing method to measure sedimentary denitrification is evaluated by means of a general diagenetic model that describes the depth distribution of O-2, NH4+, (NO3- )-N-14, and (NO3-)-N-15, among others. The model simulations demonstrate that isotope fractionation effects during denitrification can be neglected, but that nonuniform mixing of added (NO3-)-N-15 with locally produced (NO3-)-N-14 causes underestimation of in situ rates of denitrification. Enrichment of bottom water with (NO3-)-N-15 concentrations above ambient levels not only results in enhanced rates of denitrification, but may also change in situ rates of coupled nitrification- denitrification. However, the resulting rates usually deviate
U2 - 10.4319/lo.1996.41.8.1839
DO - 10.4319/lo.1996.41.8.1839
M3 - Article
SN - 0024-3590
VL - 41
SP - 1839
EP - 1844
JO - Limnology and Oceanography
JF - Limnology and Oceanography
IS - 8
ER -