Search Results - "Well, R."

Isotopologue signatures of N2O produced by denitrification in soils by Well, R., Flessa, H.

“…We investigated oxygen and site‐specific nitrogen isotope effects of N2O produced in the NO3−‐to‐N2O step of denitrification. Arable sand and silt loam soils…”
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Isotopologue enrichment factors of N2O reduction in soils by Well, R., Flessa, H.

“…Isotopic signatures can be used to study sink and source processes of N2O, but the success of this approach is limited by insufficient knowledge on the isotope…”
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Application of hydrochar and pyrochar to manure is not effective for mitigation of ammonia emissions from cattle slurry and poultry manure by Gronwald, M., Helfrich, M., Don, A., Fuß, R., Well, R., Flessa, H.

“…Nitrogen (N) loss as ammonia (NH 3 ) from agricultural systems is one of the major sources of atmospheric pollutants and is responsible for more than 50% of…”
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Predicting the denitrification capacity of sandy aquifers from in situ measurements using push–pull 15N tracer tests by Eschenbach, W, Well, R, Walther, W

“…Knowledge about the spatial variability of in situ denitrification rates (Dr(in situ)) and their relation to the denitrification capacity in…”
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Predicting the denitrification capacity of sandy aquifers from shorter-term incubation experiments and sediment properties by Eschenbach, W, Well, R

“…Knowledge about the spatial variability of denitrification rates and the lifetime of denitrification in nitrate-contaminated aquifers is crucial to predict the…”
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Modeling Denitrification: Can We Report What We Don't Know? by Grosz, B., Matson, A., Butterbach‐Bahl, K., Clough, T., Davidson, E. A., Dechow, R., DelGrosso, S., Diamantopoulos, E., Dörsch, P., Haas, E., He, H., Henri, C. V., Hui, D., Kleineidam, K., Kraus, D., Kuhnert, M., Léonard, J., Müller, C., Petersen, S. O., Sihi, D., Vogeler, I., Well, R., Yeluripati, J., Zhang, J., Scheer, C.

“…Biogeochemical models simulate soil nitrogen (N) turnover and are often used to assess N losses through denitrification. Though models simulate a complete N…”
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Kinetics of N2O production and reduction in a nitrate-contaminated aquifer inferred from laboratory incubation experiments by Weymann, D, Geistlinger, H, Well, R, von der Heide, C, Flessa, H

“…Knowledge of the kinetics of N2 O production and reduction in groundwater is essential for the assessment of potential indirect emissions of the greenhouse…”
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Soil, slurry and application effects on greenhouse gas emissions by Severin, M., Fuß, R., Well, R., Garlipp, F., Van den Weghe, H.

“…In conjunction with soil type and climate, the use of nitrogen fertilizers is a major factor affecting nitrous oxide emissions. This study compares injection…”
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Groundwater N2O emission factors of nitrate-contaminated aquifers as derived from denitrification progress and N2O accumulation by C. Konrad, K. Meyer, M. Deurer, C. von der Heide, H. Flessa, R. Well, D. Weymann, W. Walther

“…We investigated the dynamics of denitrification and nitrous oxide (N2O) accumulation in 4 nitrate (NO−3) contaminated denitrifying sand and gravel aquifers of…”
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Dual isotope and isotopomer measurements for the understanding of N₂O production and consumption during denitrification in an arable soil by Meijide, A, Cardenas, L.M, Bol, R, Bergstermann, A, Goulding, K, Well, R, Vallejo, A, Scholefield, D

“…The aim of our research was to obtain information on the isotopic fingerprint of nitrous oxide (N₂O) associated with its production and consumption during…”
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The effect of diet manipulation on nitrous oxide and methane emissions from manure application to incubated grassland soils by Cardenas, L.M., Chadwick, D., Scholefield, D., Fychan, R., Marley, C.L., Jones, R., Bol, R., Well, R., Vallejo, A.

“…Changes to agricultural management, particularly of the nitrogen (N) input to farms, have great potential for mitigating emissions of N containing gases,…”
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Spatial variability of N₂O concentrations and of denitrification-related factors in the surficial groundwater of a catchment in Northern Germany by von der Heide, C, Böttcher, J, Deurer, M, Weymann, D, Well, R, Duijnisveld, W.H.M

“…N₂O concentrations and denitrification-related factors (NO₃, SO₄, dissolved organic carbon (DOC) and CO₂) were investigated in the surface groundwater of a…”
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Measurement of isotopomer signatures of N2O in groundwater by Well, R., Flessa, H., Jaradat, F., Toyoda, S., Yoshida, N.

“…N2O flux from aquifers caused by leaching of agricultural N is a poorly known component of the global anthropogenic source of this greenhouse gas. We measured…”
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The dynamics of N2O near the groundwater table and the transfer of N2O into the unsaturated zone : a case study from a sandy aquifer in Germany by DEURER, M, VON DER HEIDE, C, BÖTTCHER, J, DUIJNISVELD, W.H.M, WEYMANN, D, WELL, R

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Spatial and temporal variability of N₂O in the surface groundwater: a detailed analysis from a sandy aquifer in northern Germany by von der Heide, C, Böttcher, J, Deurer, M, Duijnisveld, W. H. M, Weymann, D, Well, R

“…The knowledge of the spatial and temporal variability of N₂O concentrations in surface groundwater is the first step towards upscaling of potential indirect…”
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Emission of groundwater-derived nitrous oxide into the atmosphere: model simulations based on a 15N field experiment by Böttcher, J., Weymann, D., Well, R., Von Der Heide, C., Schwen, A., Flessa, H., Duijnisveld, W. H. M.

“…Indirect emissions of the major greenhouse gas nitrous oxide (N2O) occurring from aquatic ecosystems are considered to be a highly uncertain component in the…”
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Comparison of field and laboratory measurement of denitrification and N2O production in the saturated zone of hydromorphic soils by WELL, R, AUGUSTIN, J, MEYER, K, MYROLD, D. D

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Kinetics of N 2 O production and reduction in a nitrate-contaminated aquifer inferred from laboratory incubation experiments by Weymann, D., Geistlinger, H., Well, R., von der Heide, C., Flessa, H.

“…Knowledge of the kinetics of N2O production and reduction in groundwater is essential for the assessment of potential indirect emissions of the greenhouse gas…”
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Groundwater N 2 O emission factors of nitrate-contaminated aquifers as derived from denitrification progress and N 2 O accumulation by Weymann, D., Well, R., Flessa, H., von der Heide, C., Deurer, M., Meyer, K., Konrad, C., Walther, W.

“…We investigated the dynamics of denitrification and nitrous oxide (N2O) accumulation in 4 nitrate (NO−3) contaminated denitrifying sand and gravel aquifers of…”
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Quantifying N2O reduction to N2 based on N2O isotopocules - validation with independent methods (helium incubation and 15N gas flux method) by Lewicka-Szczebak, Dominika, Augustin, Jürgen, Giesemann, Anette, Well, Reinhard

“…Stable isotopic analyses of soil-emitted N2O (δ15Nbulk, δ18O and δ15Nsp = 15N site preference within the linear N2O molecule) may help to quantify N2O…”
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