Prof. Dr. Moritz Lehmann - Publications

 

Submitted
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Su, G., Z. Guo, Y. Hu, Q. Zheng, J. Zopfi, J., M.F. Lehmann, N. Jiao (2024). Tidal control on methanotrophic activity and mitigation of methane emissions from coastal mangrove sediments. Submitted Limnology and Oceanography.

Bartosiewicz, M., P. J. Cabello-Yeves, E.M. Eckert, A. di Cesare, D.J. Scanlan, R. J. Puxty, A. Przytulska, H. Osterholz, A. Meibom, S. Escrig, N. Dzhembekova, J. Zopfi, M. F. Lehmann and C. Callieri (2023). Colors in the dark: Ancestral trade-offs in picocyanobacteria from an Early Ocean analogue. The ISME Journal

Baumann, K.B.L, A.Mazzoli, G. Salazar, H.-J. Ruscheweyh, B. Müller, R. Niederdorfer, S. Sunagawa, M.A. Lever, M.F. Lehmann, H. Bürgmann (2023). Organic matter affects microbial nitrogen transformation potential, not gene expression, in lake sediments. Submitted ISME Communication.

Callbeck. C.M., A. Mazzoli, T.J. Paulus, C. Frey, C. J. Schubert, M.F. Lehmann (2023). Influence of the hydrodynamic regime on nitrogen transformation processes in lacustrine sediments. Submitted Limnology and Oceanography Letters.

Chang, Y, Z. Zou, Z. Zou, Y.  Kuang, K. Cheng, J. Hu, T. Huang, D. Ji, Y. Fang, and M.F. Lehmann (2023). Concentration and isotopic composition of atmospheric ammonia throughout the urban mixing layer in response to extreme emission reduction. Submitted Environmental Science & Technology Letters.

Dangl, G., Claudia Frey, C. Hassenrück, B. Sabbaghzadeh, J. Wäge-Recchioni, M.F. Lehmann, M. Ley, G. Rehder, K. Jürgens (2023). Processes and microorganisms driving nitrous oxide production in the Benguela Upwelling System. Submitted Limnology and Oceanography.

Frey, C., W.Tang, B.B. Ward, M.F. Lehmann (2024)Sample preservation methods for nitrous oxide concentration and isotope ratio measurements in aquatic environments. Submitted Limnology and Oceanography: Methods

Su, G., J. Zopfi, M.F. Lehmann, J. Tolu, C. Glombitza, M. Lever, and C.J. Schubert (2023). Methane production during early diagenesis of sedimentary organic matter in lake sediments. Submitted Science of the Total Environment. 


Published or in press
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2024

[129] Studer, A.S., L. Wörmer, H. Vogel, N. Dubois, K.-U. Hinrichs, F. Lepori, M.F. Lehmann (2024). First lacustrine application of the diatom-bound nitrogen isotope paleo-proxy reveals coupling of denitrification and N2 fixation in a hyper-eutrophic lake. Accepted Limnology and Oceanography.

[128] Rushworth, D.D., W.D.C. Schenkeveld, N. Kumar, V. Noël, J. Dewulf , N. A. G. M. van Helmond, C. P. Slomp, M.F. Lehmann, S.M. Kraemer (2024). Solid phase speciation controls copper mobilisation from marine sediments by methanobactin. Science of the Total Environment; https://doi.org/10.1016/j. scitotenv.2024.173046

[127] da Costa, L., M. Martinez, M. Suleiman,  R. Keiser, M. F. Lehmann, M. Lenz (2024). Manganese reductive dissolution coupled with Sb mobilisation in contaminated shooting range soil. Applied Microbiology and Biotechnology;108: 295; https://doi.org/10.1007/s00253-024-13133-2

[126] Bartosiewicz, M., A. Przytulska, A. Birkholz, H. Niemann, J. Zopfi, M. F. Lehmann (2024). Controls and significance of priming effects in lake sediments.Global Change Biology;  https://doi.org/10.1111/gcb.17076

[125] deCarvalho, C.F.M., M.F. Lehmann, S. G. Pati (2024). Improving the accuracy of δ18O and δ17O values of O2 measured by continuous‑flow isotope-ratio mass spectrometry with a multi-point isotope-ratio calibration. Rapid Communications in Mass Spectrometry. DOI: 10.1002/rcm.9652

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2023

[124] Huang, K., W. Eschenbach, J. Wei, D. Hausherr, C. Frey, A. Kupferschmid, J. Dyckmans, A. Joss, M. F. Lehmann, J. Mohn (2023).  Simultaneous 15N online analysis in NH4+, NO2–, NO3–, and N2O to Trace N2O Production Pathways in Nitrogen-Polluted Aqueous Environments. Environmental Science and Technology Water.  https://doi.org/10.1021/acsestwater.3c00216

[123] Ehrenfels., B., K.B.L. Baumann, R. Niederdorfer, A.S. Mbonde, I.A. Kimirei, T. Kuhn, P. Magyar, W. Mohr, D. Odermatt, C.J. Schubert, H. Bürgmann, M.F. Lehmann, B. Wehrli, and C. M. Callbeck (2023). Hydrodynamic regimes modulate nitrogen fixation and the mode of diazotrophy in Lake Tanganyika. Nature Communications. https://doi.org/10.1038/s41467-023-42391-3

[122] Bartosiewicz, M., J. Venetz, S. Läubli, O. Sepúlveda-Steiner, D. Bouffard, J. Zopfi and M. F. Lehmann (2023). Detritus-hosted methanogenesis sustains the methane paradox in oxic lake waters. Limnology and Oceanography; Vol. 68, 248-264; https://doi.org/10.1002/lno.12263

[121] Su, G., M.F. Lehmann, J. Tischer, Y. Weber, F. Lepori, J.-C. Walser, H. Niemann, J. Zopfi (2023). Water column dynamics controls nitrite-dependent anaerobic methane oxidation by Candidatus ‘Methylomirabilis’ in stratified lake basins. The ISME Journal; 17, pages 693–702 (2023) https://doi.org/10.1038/s41396-023-01382-4

[120] Frey, C., Xi. Sun, L. Szemberski, K. L. Casciotti, E. Garcia-Robledo, A. Jayakumar, C.L. Kelly, M.F. Lehmann, and Bess B. Ward (2023). Kinetics of nitrous oxide production from ammonia oxidation in the Eastern Tropical North Pacific. Limnology and Oceanography; Vol. 68, 424-438;  https://doi.org/10.1002/lno.12283    

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2022

[119] Chang. Y., K. Cheng, Y. Kuang, Q. Hu, Y. Gao, R.-J. Huang, C. Huang, W. Walters and M.F. Lehmann (2022). Isotopic Variability of Ammonia (δ15N-NH3) Slipped from Heavy-Duty Vehicles under Real-World Conditions. Environmental Science & Technology Letters 2022 9 (9), 726-732; doi: 10.1021/acs.estlett.2c00526

[118] Visser, A.-N., S.D. Wankel, C. Frey, A. Kappler and M.F. Lehmann (2022). Unchanged nitrate and nitrite isotope fractionation during heterotrophic and Fe(II)-mixotrophic denitrification suggest a non-enzymatic link between denitrification and Fe(II) oxidation.  Front. Microbiol. 13:927475. doi: 10.3389/fmicb.2022.927475

[117] Bussmann, K., P. E. Hirsch, M. F. Lehmann, P. Burkhardt-Holm (2022). Differential habitat use of a notorious invasive fish, the round goby, in a translocation-relevant system. Ecology and Evolution, 2022;12:e9202; https://doi.org/10.1002/ece3.9202

[116] Hausherr, D.,  R. Niederdorfer, H.Bürgmann, M.F. Lehmann, P. Magyar, J. Mohn, E. Morgenroth, A. Joss (2022). Successful year-round mainstream partial nitritation anammox: assessment of effluent quality, performance and N2O emissions. Water Research X, Vol. 16, https://doi.org/10.1016/j.wroa.2022.100145

[115] Lehmann, M.F., M. Bartosiewicz, C.M. Callbeck, S. Ebrahimnezhad Darzi, T. Einzmann, C. Fernandes Moreira de Carvalho, C. Frey, T. Kuhn, M. Ley, P. M. Magyar, A. Mazzoli, J. Millet, S. Pati, T. Paulus, A. S. Studer, G. Su, J. Tischer, J. Zopfi (2022).  Mikrobielle Prozesse steuern das Treibhauspotenzial von Seen. Regio Basiliensis 63/1 2022 S. 3-14 (in German)    

 [114] Rushworth, D.D., I. Christl, N. Kumar, K. Hoffman, R. Kretzschmar, M. F. Lehmann, W. D. C. Schenkeveld, S. M. Kraemer (2022). Copper mobilisation from Cu sulfide minerals by methanobactin: Effect of pH, oxygen and natural organic matter. Geobiology 2022;20:690–706;  https://doi.org/10.1111/gbi.12505   

[113] Tischer, J. , J. Zopfi, C. Frey, P. M. Magyar, A. Brand, K. Oswald, C. Jegge, C.H. Frame, M. R. Miracle, X. Sòria-Perpinyà, E. Vicente and M.F. Lehmann (2022). Isotopic signatures of biotic and abiotic N2O production and consumption in the water column of meromictic, ferruginous Lake La Cruz (Spain). Limnology and Oceanography; Vol. 67, 1760-1775; https://doi.org/10.1002/lno.12165

[112] Su, G., J. Zopfi, H. Niemann, M. F. Lehmann (2022). Multiple groups of methanotrophic bacteria mediate methane oxidation in anoxic lake sediments. Frontiers in Microbiology – Aquatic Microbiology; https://doi.org/10.3389/fmicb.2022.864630   

[111] Gruber,W., P. Magyar, I. Mitrovic, K. Zeyer, M. Vogel, L. von Känel, L. B., R. A. Werner, E. Morgenroth, M. F. Lehmann, D. Braun, A. Joss, J. Mohn (2022). Tracing N2O formation in full-scale wastewater treatment with natural abundance isotopes indicates control by organic substrate and process settings. Water Research X, Vol. 15;  https://doi.org/10.1016/j.wroa.2022.100130

[110] Hausherr, D.,  R. Niederdorfer, H.Bürgmann, M.F. Lehmann, P. Magyar, J. Mohn, E. Morgenroth, A. Joss (2022). Successful mainstream nitritation through NOB inactivation. Environmental Science and Technology, Vol. 822; doi.org/10.1016/j.scitotenv.2022.153546

[109] Sinninghe Damsté, J.S., Y. Weber, J. Zopfi, M.F Lehmann, H. Niemann (2022). Distributions and sources of isoprenoidal GDGTs in Lake Lugano and other central European (peri)alpine lakes: Lessons for their use as paleotemperature proxies. Quaternary Science Reviews 277; doi.org/10.1016/j.quascirev.2021.107352

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2021

[108] Cojean, A.N.Y., K. Kremer, M. Bartosiewicz, S. Fabbri, M.F. Lehmann, S.B. Wirth (2021). Morphology, formation, and activity of three different pockmark systems in peri-alpine Lake Thun, Switzerland. Frontiers in Water; https://doi.org/10.3389/frwa.2021.666641

[107] Sherwood, O.A.,  S. Davin, N. Lehmann, C. Buchwald, E. N. Edinger, T. Kuhn, M.F. Lehmann, M. Kienast (2021). Stable isotope ratios in seawater nitrate reflect the influence of Pacific water along the Northwest Atlantic margin. Biogeosciences, 18, 4491-4510, 2021; https://bg.copernicus.org/articles/18/4491/2021/

[106] van Grinsven, S., K. Oswald, C. Jegge, B. Wehrli, J. Zopfi, M.F. Lehmann, C.J. Schubert (2021). Methane oxidation in the waters of a humics-rich Finnish lake stimulated by photosynthesis, nitrite, Fe(III) and humics. Biogeosciences. 18, 3087–3101; https://doi.org/10.5194/bg-18-3087-2021

[105] Niederdorfer, R., L. Fragner, L. Yuan, D. Hausherr, J. Wei, P. Magyar, A. Joss, M.F. Lehmann, F. Ju, H. Bürgmann (2021).  Distinct growth stages controlled by the interplay of deterministic and stochastic processes in functional anammox biofilms. Water Research, 200, 117225; https://doi.org/10.1016/j.watres.2021.117225

[104] Chang, Y.; Zhang, Y., Kawichai, S., Wang, Q., Van Damme, M., Clarisse, L., Prapamontol, T.,  and Lehmann, M.F. (2021). Convergent Evidence for Pervasive but Limited Contribution of Biomass Burning to Atmospheric Ammonia in Peninsular Southeast Asia. Atmospheric Chemistry and Physics. 21, 7187–7198; https://doi.org/10.5194/acp-21-7187-2021

[103] Magyar, P.M., D. Hausherr, N. Stöcklin, R.Niederdorfer, J. Wei, J. Mohn, H. Bürgmann, A. Joss, and M.F Lehmann (2021). Nitrogen isotope effects can be used to diagnose N transformations in wastewater anammox system. Scientific Reports; doi.org/10.1038/s41598-021-87184-0

[102] Visser, A.-N., M.F. Lehmann, F.M. D'Affonseca, H. Rügner, P. Grathwohl, N. Blackwell, A. Kappler, K. Osenbrück (2021). Fate of nitrate during groundwater recharge in a fractured karst aquifer in Southwest Germany. Hydrogeology Journal; doi.org/10.1007/s10040-021-02314-2

[101] Bartosiewicz, M. P. Rzepka, and M.F. Lehmann (2021). Tapping freshwaters for methane and energy. Environmental, Science and Technology; doi.org/10.1021/acs.est.0c06210

[100] Yao H, Panieri G, Lehmann MF, Himmler T and Niemann H (2021). Biomarker and isotopic composition of seep carbonates record environmental conditions in two Arctic methane seeps. Front. Earth Sci. 8:570742; doi: 10.3389/feart.2020.570742

[99] Wong, W.W., M.F. Lehmann, T. Kuhn, C. Frame, S. C. Poh, I. Cartwright, P. Cook (2021). Nitrogen and oxygen isotopomeric constraints on the sources of nitrous oxide and the role of submarine groundwater discharge in a temperate eutrophic salt-wedge estuary. Limnology and Oceanography, Vol. 66(4), 1068-1082; doi.org/10.1002/lno.11664

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2020

[98] Visser, A.-N., S.D. Wankel, P. A. Niklaus, J.M. Byrne, A.A. Kappler, M.F. Lehmann (2020). Impact of reactive surfaces on the abiotic reaction between nitrite and ferrous iron and associated nitrogen and oxygen isotope dynamics. Biogeosciences, 17, 4355–4374, 2020; doi.org/10.5194/bg-17-4355-2020

[97] Lehmann, M.F., Carstens, D., A. Deek, M. McCarthy, C. J. Schubert, and J. Zopfi, (2020). Amino acid and amino sugar compositional changes during in vitro degradation of algal organic matter indicate rapid bacterial re-synthesis. Geochimica et Cosmochimica Acta, Vol. 283, 67-84;doi.org/10.1016/j.gca.2020.05.025

[96] Yu, L., E. Harris, D. Lewicka-Szczebak, M. Barthel, M.R.A. Blomberg, S.J. Harris, M.S. Johnson, M.F. Lehmann, J. Liisberg, C. Müller, N. Ostrom, J. Six, S. Toyoda, N. Yoshida, J. Mohn (2020). What can we learn from N2O isotope data? Analytics, processes and modelling. Rapid Communication in Mass Spectrometry, doi.org/10.1002/rcm.8858

[95] Chang, Y.,   Huang, R.-J.,  Ge, X., Huang, X., Zou, Z., Liu, X.,  and M. F. Lehmann (2020). Puzzling haze events in China during the coronavirus (COVID-19) shutdown. Geophysical Research Letters, 47, e2020GL088533. doi.org/10.1029/2020GL088533

[94] Lama, S., T. Kuhn, M.F. Lehmann, C. Müller, O. Gonzales, N. Eisenhauer, M. Lange, S. Scheu, Y. Oelmann, and W. Wilcke (2020). The biodiversity-N cycle relationship: A 15N tracer experiment with soil from plant mixtures of varying diversity to model N pool sizes and transformation rates. Biology and fertility of Soils, 56, 1047-1061; doi:10.1007/s00374-020-01480-x

[93] Cojean, A.N.Y., M. F. Lehmann, E. K. Robertson, B. Thamdrup, J. Zopfi (2020). Controls of H2S, Fe2+, Mn2+ on microbial NO3--reducing processes in sediments of a eutrophic lake. Frontiers in Microbiology; doi.org/10.3389/fmicb.2020.01158

[92] Ferré, B., P. Jansson,  M. Moser, P. Serov, A. Portnov, F. Gründger, C. Graves, C. Berndt, M.F. Lehmann, H. Niemann (2020). Reduced methane seepage from Arctic sediments during cold bottom water conditions. Nature Geoscience; doi.org/10.1038/s41561-019-0515-3.

[91] Su, G., J. Zopfi, H. Yao, L. Steinle, H. Niemann, M. F. Lehmann (2020). Manganese/iron-supported sulfate-dependent anaerobic oxidation of methane by archaea in lake sediments.  Limnology and Oceanography; 65, 2020, 863–875, https://doi.org/10.1002/lno.11354

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2019

[90] Cojean, A.N.Y., J. Zopfi, A. Gerster, C. Frey, F. Lepori, M.F. Lehmann (2019). Direct O2 control on the partitioning between denitrification and dissimilatory nitrate reduction to ammonium in lake sediments. Biogeosciences, 16, 4705-4718, doi.org/10.5194/bg-16-4705-2019

[89] Chang, Y.H., Y. L. Zhang, J. R. Li, C. G. Tian, L. L. Song, X. Y. Zhai, W. Q. Zhang, T. Huang, Y. C. Lin, C. Zhu, Y. T. Fang, M. F. Lehmann, and J. M. Chen (2019). Isotopic constraints on the atmospheric sources and formation of nitrogenous species in clouds influenced by biomass burning. Atmospheric Chemistry and Physics, 19, 12221–12234, doi.org/10.5194/acp-19-12221-2019

[88] Åström, E.K.L, M.L. Carroll, A. Sen, H. Niemann, W.G. Ambrose Jr., M.F. Lehmann, J.L. Carroll (2019). Chemosynthesis influences food web and community structure in high-Arctic benthos. Marine Ecology Progress Series, Vol. 29: 19–42; doi.org/10.3354/meps13101

[87] Bartosiewicz, M., A. Przytulska, J.-F. Lapierre, I. Laurion, M. F. Lehmann and R.  Maranger (2019). Hot tops, cold bottoms: Synergistic climate warming and shielding effects increase carbon burial in lakes. Limnology and Oceanography Letters;doi: 10.1002/lol2.10117

[86] Bartosiewicz, M., A. Przytulska, B.N. Deshpande, A. Cortes, S. MacIntyre, M. F. Lehmann and I. Laurion (2019). Effects of climate change and episodic heat events on cyanobacteria in a eutrophic polymictic lake. Science of the Total Environment, Vol. 693, doi.org/10.1016/j.scitotenv.2019.07.220

[85] Su, G., H. Niemann, L. Steinle, J. Zopfi, M. F. Lehmann (2019). Evaluating radioisotope-based approaches to measure anaerobic methane oxidation rates in lacustrine sediments. Limnology and Oceanography Methods, doi: 10.1002/lom3.10323.

[84] Yao, H., W. Hong, G. Panieri, S. Sauer, M. E. Torres, F. Gründger, M.F. Lehmann and H.Niemann (2019). Fracture-controlled fluid transport supports microbial methane-oxidizing communities at the Vestnesa Ridge. Biogeosciences, Vol. 16, 2221-2232, doi.org/10.5194/bg-16-2221-2019

[83] Scholz, F., S. Beil, S. Flögel, M.F. Lehmann, A. Holbourn, K. Wallmann, W. Kuhnt (2019) Oxygen minimum zone-type biogeochemical cycling in the Cenomanian-Turonian Proto-North Atlantic across Oceanic Anoxic Event 2. Earth and Planetary Science Letters, Vol. 517, 50-60.

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2018

[82] Ley, M. M.F. Lehmann, P. Niklaus, and J. Luster (2018). Alteration of nitrous oxide emissions from floodplain soils by aggregate size, litter accumulation and plant soil interactions. Biogeosciences, Vol. 15, 7043-7057

[81] Yuki Weber, Jaap S. Sinninghe Damsté, Jakob Zopfi, Cindy De Jonge, Adrian Gilli, Carsten J. Schubert, Fabio Lepori, Moritz F. Lehmann, Helge Niemann (2018). Redox-dependent niche differentiation provides evidence for multiple bacterial sources of glycerol tetraether lipids in lakes. Proceedings of the National Academy of Science, doi.org/10.1073/pnas.1805186115

[80] Chang, Y.,  Y. Zhang, C. Zhang; X. Ma; F. Cao; X. Liu; W. Zhang, T. Kuhn, M. F. Lehmann (2018). Nitrogen isotope fractionation during gas-particle conversion of NOx to NO3- in the atmosphere - implications for isotope-based NOx source apportionment. Atmospheric Chemistry and Physics, Vol. 18, 11647-11661, doi.org/10.5194/acp-18-11647-2018

[79] Volk, M., S. Bassin, M.F. Lehmann, M. G. Johnson, C. P. Andersen (2018). 13C isotopic signature and C concentration of soil density fractions illustrate reduced C allocation to subalpine grassland soil under high atmospheric N deposition. Soil Biology and Biochemistry, Vol. 125, p. 178-184, doi.org/10.1016/j.soilbio.2018.07.014

[78] Erostate, M., F. Huneau, E. Garel, M. F. Lehmann, T. Kuhn, L. Aquilina , V. Vergnaud-Ayraud, T. Labasque, S. Santoni, S. Robert, D. Provitolo, V. Pasqualini (2018). Delayed nitrate dispersion within a coastal aquifer provides constraints on land-use evolution and nitrate contamination in the past. Science of the Total Environment vol. 644 p. 928-940;  doi.org/10.1016/j.scitotenv.2018.06.375

[77] Symanczik, S., M. F. Lehmann, A. Wiemken, T. Boller, P.-E. Courty (2018). Effects of two contrasted arbuscular mycorrhizal fungal isolates on nutrient uptake by Sorghum bicolor under drought. Journal Mycorrhiza, (), 1-7 DOI 10.1007/s00572-018-0853-9

[76] Steinle, L., K.Knittel, N. Felber, C. Casalino, G. de Lange, C. Tessarolo, A. Stadniskaia, J. S. Sinninghe Damsté, J. Zopfi, M. F. Lehmann, T. Treude, H. Niemann (2018). Life on the edge: Active microbial communities within the Kryos MgCl2-brine basin at very low water activity. The ISME Journal. DOI: doi.org/10.1038/s41396-018-0107-z

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2017

[75] Brankovits,D., J. W. Pohlman, H. Niemann, M. B. Leigh, M. C. Leewis, K. W. Becker, T. M. Iliffe, F., Alvarez, M.F. Lehmann, B. Phillips (2017). Methane- and dissolved organic carbon-fueled microbial loop supports a 
 tropical subterranean estuary ecosystem. Nature Communications. DOI: 10.1038/s41467-017-01776-x

[74] Vystavna, Y., Diadin, D., Yakovlev, V., Hejzlar, J., Vadillo, I., Huneau, F., Lehmann, M.F. (2017). Constraining nitrate contamination in a shallow urban aquifer: integrating stable nitrate isotope measurements and land use analysis. Environmental Earth Science, 76 (13), 463; doi10.1007/s12665-017-6796-1

[73] Gerling, C. , T. Doppler, V. Heyd, C. Knipper, T. Kuhn, M.F. Lehmann, A.W.G. Pike and J. Schibler (2017). High-resolution isotopic evidence of specialised cattle herding in the European Neolithic. PlosOne. doi.org/10.1371/journal.pone.0180164

[73b] Gerling, C. , T. Doppler, V. Heyd, C. Knipper, T. Kuhn, M.F. Lehmann, A.W.G. Pike and J. Schibler (2017). The Beginnings of Alpine Transhumance? Isotopic Insights into Neolithic Cattle Herding. Chimia 71(12)

[72] Weber, Y., J.S. Sinninghe Damsté, M.F. Lehmann, H. Niemann (2017). Incomplete recovery of intact polar glycerol dialkyl glycerol tetraethers from lacustrine suspended biomass. L&O Methods. doi: 10.1002/lom3.10198

[71] Koegel, S., D. Mieulet, S. Baday, O. Chatagnier, M. F. Lehmann, A. Wiemken, T. Boller, D. Wipf, S. Bernèche, E. Guiderdoni, P.-E. Courty, 2017. Phylogenetic, structural, and functional characterization of AMT3;1, an ammonium transporter induced by mycorrhization among model grasses. Mycorrhiza 1-14; doi: 10.1007/s00572-017-0786-8

[70] Steinle, L., J. Maltby, T. Treude, A. Kock, H. W. Bange, N. Engbersen, J. Zopfi, M. F. Lehmann, and Helge Niemann (2017). Effects of low oxygen concentrations on aerobic methane oxidation in seasonally hypoxic coastal waters. Biogeosciences, 14, 1631-1645, 2017, doi:10.5194/bg-14-1631-2017

[69] Grimmeisen, F.; M. F. Lehmann; T. Liesch; N. Goeppert; J. Klinger; J. Zopfi; N. Goldscheider (2017). Isotopic constraints on water source mixing, network leakage and contamination in an urban groundwater system. Science of The Total Environment Volume 583, Pages 202–213.

[68] Frame, C.H., E. Lau, E.J. Nolan IV, T.J. Goepfert, M.F. Lehmann (2017). Acidification enhances biologically catalyzed hybrid N2O production by aquatic ammonia-oxidizing microorganisms.  Frontiers in Microbiology – Microbiological Chemistry and Geomicrobiology, doi: 10.3389/fmicb.2016.02104

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2016

[67] Doppler,  T.,  C. Gerling, V. Heyd, C. Knipper, T. Kuhn, M.F. Lehmann, A.W.G. Pike, J. Schibler, 2016. Landscape opening and herding strategies: Carbon isotope analyses of herbivore bone collagen from the Neolithic and Bronze Age lakeshore site of Zurich-Mozartstrasse, Switzerland. Quaternary International.

[66] Oswald K., C. Jegge, J. Tischer, J. Berg, Andreas Brand, M.R. Miracle, X. Soria, E. Vicente, M. F. Lehmann, J. Zopfi, C. J. Schubert (2016). Methanotrophy under versatile conditions in the water column of the ferruginous meromictic Lake La Cruz (Spain). Frontiers in Microbiology – Aquatic Microbiology, doi: 10.3389/fmicb.2016.01762 

[65] Mohn, J., W. Gutjahr, S. Toyoda, E. Harris, E. Ibraim, H. Geilmann, P. Schleppi, T. Kuhn, M.F. Lehmann, C. Decock, R.A. Werner, N. Yoshida, and W.A. Brand. (2016) Reassessment of the NH4NO3 thermal decomposition technique for calibration of the N2O isotopic composition. Rapid Commun. Mass Spectrom., doi: 10.1002/rcm.773

[64] Hüppi, R., A. Neftel, M. F. Lehmann, M. Krauss, J. Six, J. Leifeld (2016). N-use efficiencies and N2O emissions in two contrasting, biochar amended soils under winter wheat - cover crop - sorghum rotation. Env. Res. Letters., 11, 84013-84013, doi: 10.1088/1748-9326/11/8/084013

[63] Steinle, L., M. Schmidt, L. Briant, M. Haeckel, P. Linke, S. Sommer, J. Zopfi, M. F. Lehmann, T. Treude, and H. Niemannn (2016). Linked sediment and water-column methanotrophy at a man-made gas blowout in the North Sea: Implications for methane budgeting in seasonally stratified shallow seas. Limnology and Oceanography, DOI: 10.1002/lno.10388

[62] McCarthy, M.J., W. S. Gardner, M. F. Lehmann and D. F. Bird, 2016. Benthic nitrogen regeneration, fixation, and denitrification in a temperate, eutrophic lake: Effects on the nitrogen budget and cyanobacteria blooms. Limnology and Oceanography 61, 1406–1423 ; doi: 10.1002/lno.10306

[61] Wenk, C.B., C. H. Frame, K. Koba, K. L. Casciotti, J. Blees, M. Veronesi, H. Niemann, C. J. Schubert, N. Yoshida, S. Toyoda, A. Makabe, J. Zopfi, M.F. Lehmann, 2016. Differential N2O dynamics in two oxygen-deficient lake basins revealed by stable isotope and isotopomer distributions. Limnology and Oceanography, 61, 1735–1749; DOI:10.1002/lno.10329 9

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2015

[60] Wankel, S.D., C. Buchwald, W. Ziebis, C. Wenk and M. F. Lehmann. 2015. Nitrogen cycling in the subsurface biosphere: Nitrate isotopes in porewaters underlying the oligotrophic North Atlantic. Biogeosciences, 12, 7483-7502; doi:10.5194/bg-12-7483-2015

[59] Lehmann M.F., Simona M., Wyss S., Blees J., Frame C.H., Niemann H., Veronesi M. and Zopfi J. (2015). Powering up the “biogeochemical engine”: The impact of exceptional ventilation of a deep meromictic lake on the lacustrine redox, nutrient, and methane balances. Front. Earth Sci. 3:45. doi: 10.3389/feart.2015.00045

[58] Rohde, M.M., J. Granger, D.M. Sigman, M.F. Lehmann, 2015. Coupled nitrate N and O stable isotope fractionation by a natural marine plankton consortium. Frontiers in Marine Science 2:28. doi: 10.3389/fmars.2015.00028

[57] Blees, J., H. Niemann, M. Erne, J. Zopfi, C.J. Schubert, and M.F. Lehmann, 2015. Surface water methane super-saturation and emission in Lake Lugano, southern Switzerland. Aquatic Sciences, DOI 10.1007/s00027-015-0401-z

[56] Steinle, L., C. A. Graves, T. Treude, B. Ferré, A. Biastoch, I. Bussmann, C. Berndt, S. Krastel, R. H. James, E. Behrens, C. W. Böning, J. Greinert, C.-J. Sapart, M. Scheinert, S. Sommer, M. F. Lehmann, H. Niemann (2015): Water column methanotrophy controlled by a rapid oceanographic switch. Nature Geoscience | doi: 10.1038/ngeo2420

[55] Saarenheimo, J, A. Rissanen, L. Arvol, H. Nykänen, M.F. Lehmann, and M. Tiirola, 2015. Genetic and environmental factors controlling nitrous oxide accumulation in lakes. PLoS ONE, Vol.10(3), e0121201; doi 10.1371/journal.pone.0121201

[54] Weber, Y., C. De Jonge,  W. I. C. Rijpstra, E.C. Hopmans, A. Stadnitskaia, C.J.  Schubert, M.F.  Lehmann, J. S. Sinninghe Damsté, and H.Niemann, 2015. Identification and carbon isotope composition of a novel branched GDGT isomer in lake sediments: Evidence for lacustrine brGDGT production. Geochimica et Cosmochimica Acta, Volume 154, 118-129; doi.org/10.1016/j.gca.2015.01.032

[53] Niemann, H., L.I. Steinle, J. H. Blees, I. Bussmann, T. Treude S. Krause, M. Elvert, M.F. Lehmann, 2015. Toxic effects of lab grade butyl rubber stoppers on aerobic methane oxidation. Limnol. Oceanogr.: Methods 13, 2015, 40–52 VC 2015 Association for the Sciences of Limnology and Oceanography doi: 10.1002/lom3.10005

[52] Naeher, S., A. Huguet, C.L. Roose-Amsaleg, A.M. Laverman, C. Fosse, M.F. Lehmann, S. Derenne, J. Zopfi,  2015. Molecular and geochemical constraints on anaerobic ammonium oxidation (anammox) in a riparian zone of the Seine Estuary (France). Biogeochemistry; Volume 123 (1-2), 237-250; doi 10.1007/s10533-014-0066-z

[51] Courty, P.-E., P. Doubkova, S. Calabrese, H. Niemann, M. F. Lehmann, M. Vosátka, M.-A. Selosse, 2015. Species-dependent partitioning of C and N stable isotopes between arbuscular mycorrhizal fungi and their C3 and C4 hosts. Soil Biology and Biochemistry, Volume 82, 52-61; doi:10.1016/j.soilbio.2014.12.005

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2014

[50] Dabundo, R., M. F. Lehmann, L. Treibergs, C. R. Tobias, M. A. Altabet, P. H. Moisander, J. Granger, 2014. The contamination of commercial 15N2 gas stocks with 15N-labeled nitrate and ammonium and consequences for 
nitrogen fixation measurements. PLoS ONE 9(10): e110335. doi:10.1371/journal.pone.0110335

[49] Blees J., H. Niemann, C. B. Wenk, J. Zopfi, C. J. Schubert, M. L. Veronesi, and M. F. Lehmann, 2014. Bacterial methanotrophs drive the formation of a seasonal anoxic benthic nepheloid layer in an alpine lake. Limnology Oceanography, 59(4):1410-1420.

[48] Wenk, C.B.,  J. Zopfi, J. Blees , W. S. Gardner, M. McCarthy, H. Niemann, M. L. Veronesi, and M. F. Lehmann, 2014. Quantitative partitioning between benthic and pelagic nitrate reduction in the Lake Lugano south basin. Limnology Oceanography, 59(4):1421-1433.

[47] Bourbonnais, A., S. K. Juniper, D. A. Butterfield, R. Anderson, and M.F. Lehmann, 2014. Diversity and abundance of Bacteria and nirS-encoding denitrifiers associated with the Juan de Fuca Ridge hydrothermal system. Annals of Microbiology: Volume 64, Issue 4, Page 1691-1705. 

[46] Blees J., H. Niemann, C. B. Wenk, J. Zopfi, C. J. Schubert, M. Kirf, M. L. Veronesi, C. Hitz, and M. F. Lehmann, 2014. Micro-aerobic bacterial methane oxidation in the chemocline and anoxic water column of deep south-Alpine Lake Lugano (Switzerland). Limnology Oceanography, 59(2), 311-324; doi:10.4319/lo.2014.59.2.0311.

[45] Wenk, C.B., J. Zopfi, J. Blees, M. Veronesi, H. Niemann, and M. F. Lehmann, 2014. Community N and O isotope fractionation by sulfide-dependent denitrification and anammox in a stratified lacustrine water column. Geochimica et Cosmochimica Acta.125, 551-563; doi.org/10.1016/j.gca.2013.10.034

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2013

[44] Freymond, C., C. Wenk, C.H. Frame and M. F. Lehmann, 2013. Year-round N2O production by benthic NOx reduction in a monomictic south-alpine lake. Biogeosciences, 10, 8373-8383 doi:10.5194/bg-10-8373-2013.

[43] Alkhatib, M., P.A. del Giorgio, Y. Gelinas, and M.F. Lehmann, 2013. Benthic fluxes of dissolved organic nitrogen in the Lower St. Lawrence Estuary and implications for selective organic matter degradation. Biogeosciences, doi:10.5194/bgd-10-7917-201

[42] Brunner, B.*, Contreras, S.*, M.F. Lehmann*, O. Mantantseva, M. Rollog, T. Kalvelage, G. Glockether, G. Lavik, M.S.M. Jetten, B. Kartal, and M.M.M. Kuypers, 2013. Nitrogen isotope effects induced by anammox bacteria. PNAS 2013 : 1310488110v1-201310488. (*contributed equally)

[41] Bourbonnais, A., M.F. Lehmann, R. Hamme, C. Manning, and S.K. Juniper, 2013. Nitrate elimination and regeneration as evidenced by dissolved inorganic nitrogen isotopes in Saanich Inlet, a seasonally anoxic fjord. Marine Chemistry, 157, 194-207; doi.org/10.1016/j.marchem.2013.09.006.

[40] McCarthy, M.J., W. S. Gardner, M. F. Lehmann and D. F. Bird, 2013. Implications of water column ammonium uptake and regeneration for the nitrogen budget in temperate, eutrophic Missisquoi Bay, Lake Champlain. Hydrobiologia, 718:173-188; doi:10.1007/s10750-013-1614-6.

[39] Carstens, D., M. F. Lehmann, T. Hofstetter and C. J. Schubert, 2013. Amino acid nitrogen isotopic composition patterns in lacustrine sedimenting matter. Geochimica et Cosmochimica Acta, 121, 328-338; doi: 10.1016/j.gca.2013.07.020

[38] Koegel S., Boller T., Lehmann M.F., Wiemken A., Courty P.-E., Rapid nitrogen transfer in the Sorghum bicolor-Glomus mosseae arbuscular mycorrhizal symbiosis. Plant Signal. Behav. 2013; 8: e25229; http://dx.doi.org/10.4161/psb.25229.

[37] Wirth, S.B., A. Gilli, H. Niemann, T.W. Dahl, D. Ravasi, N. Sax, Y. Hamann, R. Peduzzi, S. Peduzzi, M. Tonolla, M.F. Lehmann, F.S. Anselmetti. 2013. Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past water-column redox conditions: The example of meromictic Lake Cadagno (Swiss Alps). Geochimica et Cosmochimica Acta, 120, 220-238; doi: 10.1016/j.gca.2013.06.017.

[36] Galbraith, E., M. Kienast A.L., M. Altabet, F. Batista, D. Bianchi, S. Calvert, S. Contreras Quintana, X. Crosta, R. De Pol Holz, J. Etourneau, R. Francois, T.-C. Hsu, T. Ivanochko, S. Jaccard, S.-J. Kao, T. Kiefer, S. Kienast, M.F. Lehmann, P. Martinez, M. McCarthy, A. Mix, A.N. Meckler, J. Möbius, T. Pedersen, L. Pichevin, T.M. Quan, R.S. Robinson, E. Ryabenko, A. Schmittner, R. Schneider, A. Schneider-Mor, M. Shigemitsu, D. Sinclair, C. Somes, A. Studer, J.E. Tesdal, R. Thunell, and J.-Y. Yang. 2013. The acceleration of oceanic denitrification during deglacial warming. Nature Geoscience, 6, 579-584; doi: 10.1038/NGEO1832.

[35] Thibodeau, B., J.F. Hélie, and M.F. Lehmann, 2013. Variations of the nitrate isotopic composition in the St. Lawrence River caused by seasonal changes in atmospheric nitrogen inputs. Biogeochemistry, 115(1-3), 287-298; doi 10.1007/s10533-013-9834-4.

[34] Wunderlin, P., M. F. Lehmann, H. Siegrist, T. Bela, J. Adriano, L. Emmenegger, and J. Mohn, 2013. Isotope signatures of N2O in a mixed microbial population system: Constraints on N2O producing pathways in wastewater treatment. Environmental Science and Technology, 47, 1339-1348, doi: 10.1021/es303174x.

[33] Walder, F., H. Niemann, M.F. Lehmann, T. Boller, A. Wiemken, P.-E. Courty, 2013. Tracking the carbon source of arbuscular mycorrhizal fungi colonizing C3 and C4 plants using carbon isotope ratios (?13C). Soil Biology and Biochemistry, 58, 341-344, doi.org/10.1016/j.soilbio.2012.12.008.

[32] Zurbrügg, R., S. Suter, M. F. Lehmann, N. Blank, B. Wehrli, and D. B. Senn, 2013. Organic carbon and nitrogen export from a tropical dam-impacted floodplain system. Biogeosciences, 10, 23-38, doi:10.5194/bg-10-23-2013

[31] Wenk, C.B., J. Blees, J. Zopfi, M. Veronesi, A. Bourbonnais, C. J. Schubert, H. Niemann, M. F. Lehmann, 2013. Anaerobic ammonium oxidation (Anammox) bacteria and sulfide-dependent denitrifiers co-exist in the water column of a meromictic south-alpine lake, Limnology and Oceanography, 58, 1–12 doi:10.4319/lo.2013.58.1.0001.

[30] Henneberger, R., Chiri, E., Blees, J., Niemann, H., Lehmann, M. F. and Schroth, M. H., 2013. Field-scale labelling and activity quantification of methane-oxidizing bacteria in a landfill-cover soil. FEMS Microbiology Ecology, 83, 392–401, DOI: 10.1111/j.1574-6941.2012.01477.x

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2012

[29] Bourbonnais, A., S. K. Juniper, D. A. Butterfield, A. Devol, M.M.M. Kuypers, G. Lavik, S.J. Hallam, B.X. Chang, S. Murdock, M.F. Lehmann, 2012. Activity and abundance of denitrifying bacteria in the subsurface biosphere of diffuse hydrothermal vents of the Juan de Fuca Ridge, Biogeosciences, 9, 4661-4678 doi:10.5194/bg-9-4661-2012

[28] Robinson, R.S, M. Kienast, A. Albuquerque, M. Altabet, S. Contreras Quintana, R. De Pol-Holz, N. Dubois, R. Francois, E. Galbraith, T. Ivanochko, S. Jaccard S.-J. Kao, T. Kiefer, S. Kienast, M.F. Lehmann, P. Martinez, M. McCarthy, J. Möbius, T. F. Pedersen, T. M. Quan, E. Ryabenko, A. Schmittner, R. Schneider, A. Schneider-Mor, M. Shigemitsu, D. Sinclair, C. Somes, A. Studer, R. Thunell, and J.-Y. Yang. 2012. A review of nitrogen isotopic alteration in marine sediments, Paleoceanography, 27, PA4203, doi:10.1029/2012PA002321.

[27] Peter, S., Rechsteiner, R., Lehmann, M. F., Brankatschk, R., Vogt, T., Diem, S., Wehrli, B., Tockner, K., and Durisch-Kaiser, E., 2012. Nitrate removal in a restored riparian groundwater system: functioning and importance of individual riparian zones, Biogeosciences, 9, 4295-4307, doi:10.5194/bg-9-4295-2012.

[26] Walder, F., H. Niemann, M. F. Lehmann, T. Boller, A. Wiemken, 2012. Common goods of plants shared under unequal terms of trade. Plant Physiology, Vol. 159: 789-797; doi: 10.1104/pp.112.195727. Featured Article!

[25] Niemann, H., S. B. Wirth, A. Stadnitskaia, A. Gilli, F. S. Anselmetti, J. S. Sinninghe Damsté, S. Schouten, E. C. Hoppmans, M. F. Lehmann, 2012. Bacterial GDGTs in Holocene sediments and catchment soils of a high-alpine lake: application of the MBT/CBT-paleothermometer. Climate of the Past, 8, 889–906; doi:10.5194/cp-8-889-2012.

[24] Alkhatib, M., M.F. Lehmann, and P.A. del Giorgio, 2012. The nitrogen isotope effect of benthic remineralization-nitrification-denitrification coupling in an estuarine environment. Biogeoscience, 9, 1633-1646; doi: 10.5194/bg-9-1633-1012

[23] Alkhatib, M., C.J. Schubert, P.A. del Giorgio, Y. Gélinas, and M.F. Lehmann, 2012. Organic matter reactivity indicators in sediments of the St. Lawrence Estuary, Estuarine, Coastal, and Shelf Science, Vol. 102-103, 36-47; doi:10.1016/j.ecss.2012.03.002.

[22] Bourbonnais, A., M.F. Lehmann, D.A. Butterfield, S.K. Juniper, 2012. Subseafloor nitrogen transformation in diffuse hydrothermal vent fluids of the Juan de Fuca Ridge evidenced by the isotopic composition of nitrate and ammonium. Geochemistry, Geophysics, Geosystems, 13, Q0201, doi:10.1029/2011GC003863.

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2011

[21] Rutschmann, S., M. Matschiner, M. Damerau, M.F. Lehmann, R. Hanel, and W. Salzburger. 2011. Parallel ecological diversification in Antarctic notothenioid fishes as evidence for adaptive radiation, Molecular Ecology, 20, 4707-4721, doi: 10.1111/j.1365-294X.2011.05279.x

[20] Sherwood. O.A., M.F. Lehmann,  C.J. Schubert, D.B. Scott, M.D. McCarthy, 2011. Nutrient regime shift in the western north Atlantic indicated by compound-specific δ15N of deep-see Gorgonian corals; PNAS, doi:10.1073/pnas.1004904108.

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2010

[19] Somes, C. J., A. Schmittner, E. D. Galbraith, M. F. Lehmann, M. A. Altabet, J. P. Montoya, R. M. Letelier, A. C. Mix, A. Bourbonnais, and M. Eby 2010, Simulating the global distribution of nitrogen isotopes in the ocean, Global Biogeochemical Cycles, 24, GB4019, doi:10.1029/2009GB003767. 

[18] Thibodeau, B., M.F. Lehmann, J. Kovarzyk, A. Mucci, Y. Gelinas, D. Gilbert, R. Maranger, and M. Alkhatib, 2010. Benthic nutrient fluxes along the Laurentian Channel: Environmental controls and impact on the N-budget of the St. Lawrence marine system; Estuarine, Coastal and Shelf Science Vol. 90(4): 195-205. 

[17] Ariztegui, D., F. S. Anselmetti, J.-M. Robbiani, S. M. Bernasconi, E. Xhemo, A. Gilli and M.F. Lehmann 2010. Natural and human-induced environmental change in southern Albania for the last 300 years — Constraints from the Lake Butrint sedimentary record, Global and Planetary Change, Vol. 71, Iss. 3-4, pages 183-192

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2009

[16] Lehmann, M.F., B. Barnett, Y. Gélinas, D. Gilbert, R. Maranger, A. Mucci, B. Sundby, and B. Thibodeau 2009, Aerobic respiration and hypoxia in the lower St. Lawrence Estuary: Stable isotope ratios of dissolved oxygen constrain oxygen sink partitioning; Limnology Oceanography 54: 2157-2169

[15] Sigman, D.M., DiFiore, P.J., Hain, M.P., Deutsch, C., Wang, Y., Karl, D.M., Knapp A.N., Lehmann, M.F., and Pantoja, S., 2009, The dual isotopes of nitrate as a constraint on the cycle and budget of oceanic fixed nitrogen, Deep-Sea Research I 56, 1419–1439

[14] Bourbonnais, A., M. F. Lehmann, J.J. Waniek, and D.E. Schulz-Bull 2009, Nitrate isotope anomalies reflect N2 fixation in the Azores Front region (subtropical N-E Atlantic), Journal of Geophysical Research - Ocean; 114, C03003, doi:10.1029/2007JC004617.

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2008

[13] Kienast, M., M. F. Lehmann, A. Timmermann, E. Galbraith, T. Bolliet, A. Holbourn, C. Normandeau, and C. Laj 2008, A mid-Holocene transition in the nitrogen dynamics of the western equatorial Pacific: Evidence of a deepening thermocline?, Geophysical Research Letters, 35, L23610, doi:10.1029/2008GL035464

[12] Granger, Julie, Daniel M. Sigman, Moritz F. Lehmann, and Philippe D. Tortell. 2008. Nitrogen and oxygen isotope fractionation during dissimilatory nitrate reduction by denitrifying bacteria, Limnology Oceanography 53: 2533-2545.

[11] Cloquet, C.,  J. Carignan, M. F. Lehmann, and F. Vanhaecke, 2008. Variation in the isotopic composition of zinc in the natural environment and the use of zinc isotopes in biogeosciences: A review, Analytical and Bioanalytical Chemistry, 390 : 451-463.

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2007

[10] Lehmann M. F., Sigman D. M., McCorkle D. C. , Granger J., Hoffmann S., Cane G., Brunelle B. G. 2007. The distribution of nitrate 15N/14N in marine sediments and the impact of benthic nitrogen loss on the isotopic composition of oceanic nitrate, Geochimica et Cosmochimica Acta, 71 (22): 5384-5404

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2006

[9] Granger J., D. M. Sigman, M. G. Prokopenko, Lehmann, M.F., P. D. Tortell. 2006. A method for nitrite removal in nitrate N and O isotope analyses. Limnology and Oceanography – Methods, Vol. 4:205-212.

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2005

[8] Lehmann, M.F., D M. Sigman, D. C. McCorkle, B. G. Brunelle, S. Hoffmann, M. Kienast, G. Cane, and J. Clement, 2005. The origin of the deep Bering Sea nitrate deficit - Constraints from the nitrogen and oxygen isotopic composition of water-column nitrate and benthic nitrate fluxes, Global Biogeochemical Cycles Vol. 19, GB4005, doi:10.1029/2005GB002508.

[7] Sigman, D.M., J. Granger, P. DiFiore, M.F. Lehmann, A. van Geen, R. Ho, and G. Cane, 2005. Coupled nitrogen and oxygen isotope measurements of nitrate along the North Pacific margin, Global Biogeochemical Cycles Vol. 19, GB4005, doi:10.1029/2005GB002458.


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2004

[6] Lehmann, M.F., D. M. Sigman, and W.M. Berelson, 2004. The effect of benthic nitrogen cycling on the 15N/14N and 18O/16O of oceanic nitrate. Marine Chemistry 88: 1-20.

[5] Lehmann, M.F., S. M. Bernasconi, A. Barbieri, M. Simona, and J. A. McKenzie, 2004. Seasonal variation of the d13C and d15N of particulate and dissolved carbon and nitrogen in Lake Lugano: Constraints on biogeochemical cycling in a eutrophic lake. Limnology and Oceanography 49(2): 415-429.

[4] Lehmann, M.F., S. M. Bernasconi, A. Barbieri, M. Simona, and J. A. McKenzie, 2004. Interannual variation of the isotopic composition of sedimenting organic nitrogen and carbon: A long-term sediment trap study. Limnology and Oceanography 49(3): 839-849 .

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2001 - 2003

[3] Lehmann, M.F., P. Reichert, S.M. Bernasconi, A. Barbieri and J.A. McKenzie, 2003. Modelling nitrogen and oxygen isotope fractionation during denitrification in a lacustrine redox transition zone, Geochimica et Cosmochimica Acta, vol. 67(14), 2529-2542.

[2] Lehmann, M.F., S.M. Bernasconi, A. Barbieri, and J.A. McKenzie, 2002. Preservation of organic matter and alteration of its carbon and nitrogen isotope composition during simulated and in situ early sedimentary diagenesis, Geochimica et Cosmochimica Acta, vol. 66(20), 3573-3584.

[1] Lehmann, M.F., S.M. Bernasconi, and J.A. McKenzie, 2001. A simple method for the extraction of ammonium from freshwaters for nitrogen isotope analysis. Analytical Chemistry, vol. 73(19), 4717-4721.

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