0439538 20240903120903.620150122235959.9 84911948039 000350524700006 10.1016/j.soilbio.2014.10.021 10 s. P cav_un_epca*02576020038-0717811 (2015)48-57Elsevier Denitrification Nitrogen isotopes Nitrous oxide Ombrotrophic bog Porewater Sphagnum Wetland Engineering controlled terms Meteorological problems cav_un_auth*0015876 Novák M. CZ cav_un_auth*0313239 Gebauer G. DE cav_un_auth*0313240 Thoma M. DE cav_un_auth*0313241 Curik J. CZ cav_un_auth*0058447 Štěpánová M. CZ cav_un_auth*0068193 Jacková I. CZ cav_un_auth*0054469 Buzek F. CZ cav_un_auth*0065378 Bárta J. CZ cav_un_auth*0313242 Santrucková H. CZ cav_un_auth*0019496 Fottová D. CZ cav_un_auth*0264564 Kuběna Aleš Antonín Ekonometrie Department of Econometrics E E UTIA-B Department of Econometrics Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2015/E/kubena-0439538.pdf GAP504/12/1782 GA ČR CZ cav_un_auth*0313243 Measurements of nitrogen isotope ratios (δ15N) along vertical porewater profiles are instrumental in localizing sources and sinks of nitrous oxide (N2O) in wetland ecosystems. We present the first N2O concentration and isotope data for porewaters of ombrotrophic, mountain-top bogs. Our two study sites, situated in the Czech Republic at elevations higher than 1000m, have been affected by atmospheric N pollution for more than 100 years. In recent decades, the northeastern site KB received over 30kgNha-1yr-1via atmospheric deposition, the southwestern site BS was 3 times less polluted. Both peat bogs were surrounded by defoliated, dead spruce stands. We hypothesized that elevated nitrate (NO3 -) inputs in rain-fed bogs may cause sizeable N2O emissions. Porewater N2O concentrations in the studied ombrotrophic bogs were 400-800 times higher, compared to fens in nearby Bavaria (Germany). 2016 DD 11 RVO:67985556 http://hdl.handle.net/11104/0243122 cav_un_auth*0312914 Czech geological survey CZ cav_un_auth*0298173 University of Bayreuth DE cav_un_auth*0295059 JU Jihočeská univerzita v Českých Budějovicích CZ České Budějovice S SOILSCIENCE 5.041 0.759 9.5 0.0351 1.447 27891 2.302 Q1 3.483 332 Q1 95.733 95.6 Q1* Q1 95.588 2015 84911948039 SCOPUS 000350524700006 WOS cav_un_epca*0257602 Soil Biology and Biochemistry 0038-0717 1879-3428 Roč. 81 č. 1 2015 48 57 Elsevier