Výsledky vyhledávání - "Jan Reent Köster"

Evaluation of denitrification and decomposition from three biogeochemical models using laboratory measurements of N2, N2O and CO2

Autor: Simone Merl, Andreas Rode, Rene Dechow, Jan Reent Köster, Hongxing He, Amanda L. Matson, Mohammad Ibrahim Khalil, Reinhard Well, Balázs Grosz, Bianca Ziehmer

Publikováno v: Biogeosciences. 18:5681-5697

Biogeochemical models are essential for the prediction and management of nitrogen (N) cycling in agroecosystems, but the accuracy of the denitrification and decomposition sub-modules is critical. Current models were developed before suitable soil N2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31888c7de8596974b8218a913e520f1e
https://doi.org/10.5194/bg-18-5681-2021

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Improvement of the 15 N gas flux method for in situ measurement of soil denitrification and its product stoichiometry

Autor: Reinhard Well, Balázs Grosz, Jan Reent Köster, Dominika Lewicka-Szczebak, Anette Giesemann, Stefan Burkart

Publikováno v: Rapid Communications in Mass Spectrometry. 33:437-448

RATIONALE Field measurement of denitrification in agricultural ecosystems using the 15 N gas flux method has been limited by poor sensitivity because current isotope ratio mass spectrometry is not precise enough to detect low 15 N2 fluxes in the pres

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c60983a2576a066c32a5f805db9c58ff
https://doi.org/10.1002/rcm.8363

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Evaluation of denitrification from three biogeochemical models using laboratory measurements of N2, N2O and CO2

Autor: Amanda Matson, Balázs Grosz, Hongxing He, M. Ibrahim Khalil, Jan Reent Köster, Rene Dechow, Simone Merl, Reinhard Well, Bianca Ziehmer, Andreas Rode

Biogeochemical models are useful for the prediction of nitrogen (N) cycling processes, but accurate description of the denitrification and decomposition sub-modules is critical. Current models were developed before suitable soil N2 flux data were ava

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2cc5297a1b5a9a90648225df438741e8
https://doi.org/10.5194/bg-2021-77

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Response of soil N2 and N2O fluxes to denitrification control factors in two agricultural soils

Autor: Amanda Matson, Stefan Burkart, Balazs Grosz, Jan Reent Köster, Simone Merl, Reinhard Well

Controlling soil N cycling to mitigate N-oxide emissions and optimize N use efficiency is an important aspect of agricultural soil management. Numerous denitrification models exist that can inform management decisions, but these are limited by the la

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e979c44450c44732b9c88d6cf7e1114
https://doi.org/10.5194/egusphere-egu2020-15158

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Evaluation and adjustment of description of denitrification in the CoupModel, DNDC and DeNi model based on N2 and N2O laboratory mesocosm incubation system measurements

Autor: Balázs Grosz, M. Ibrahim Khalil, Simone Merl, Andreas Rode, Rene Dechow, Reinhard Well, Jan Reent Köster, Hongxing He, Bianca Ziehmer

Quantifying soil nitrogen processes – especially denitrification – are critical for the adequate prediction of the produced and emitted N2O and N2 gasses and the production and consumption of NO3- and NH3. Biogeochemical models are useful tools f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2131b2ce3eb437725ce73e4916673152
https://doi.org/10.5194/egusphere-egu2020-2543

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Underestimation of denitrification rates from field application of the 15N gas flux method and its correction by gas diffusion modelling

Autor: Nicolas Ruoss, Jan-Reent Köster, Martin Maier, Dominika Lewicka-Szczebak, Reinhard Well

Common methods for measuring soil denitrification in situ include monitoring the accumulation of 15N -labelled N2 and N2O evolved from 15N -labelled soil nitrate pool in closed chambers that are placed on the soil surface. Gas diffusion is considered

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1031847e4b119ec7904abb320a57d3c0
https://doi.org/10.5194/bg-2018-495

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N2 O source partitioning in soils using 15 N site preference values corrected for the N2 O reduction effect

Autor: Di Wu, Roland Bol, Dominika Lewicka-Szczebak, Laura M. Cardenas, Jan Reent Köster, Nicolas Brüggemann

Publikováno v: Rapid Communications in Mass Spectrometry. 30:620-626

RationaleThe aim of this study was to determine the impact of isotope fractionation associated with N2O reduction during soil denitrification on N2O site preference (SP) values and hence quantify the potential bias on SP-based N2O source partitioning

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc00fea47cd20f0371ec2f894ab3aef4
https://doi.org/10.1002/rcm.7493

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