Items where contributor is "Lehmann, Moritz F"

Doppler, Thomas and Gerling, Claudia and Heyd, Volker and Knipper, Corina and Kuhn, Thomas and Lehmann, Moritz F. and Pike, Alistair W. G. and Schibler, Jörg. (2017) 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, 436. pp. 18-28.

Frame, Caitlin H. and Lau, Evan and Nolan, Joseph and Goepfert, Tyler G. and Lehmann, Moritz F.. (2017) Acidification Enhances Hybrid N2O Production Associated with Aquatic Ammonia-Oxidizing Microorganisms. Frontiers in Microbiology, 7. p. 2104.

Gerling, Claudia and Doppler, Thomas and Heyd, Volker and Knipper, Corina and Kuhn, Thomas and Lehmann, Moritz F. and Pike, Alistair W. G. and Schibler, Jörg. (2017) High-resolution isotopic evidence of specialised cattle herding in the European Neolithic. PLoS One, 12 (7). e0180164.

Koegel, Sally and Mieulet, Delphine and Baday, Sefer and Chatagnier, Odile and Lehmann, Moritz F. and Wiemken, Andres and Boller, Thomas and Wipf, Daniel and Bernèche, Simon and Guiderdoni, Emmanuel and Courty, Pierre-Emmanuel. (2017) Phylogenetic, structural, and functional characterization of AMT3;1, an ammonium transporter induced by mycorrhization among model grasses. Mycorrhiza, 27 (7). pp. 695-708.

Huppi, Roman and Neftel, Albrecht and Lehmann, Moritz F. and Krauss, Maike and Six, Johan and Leifeld, Jens. (2016) N use efficiencies and N2O emissions in two contrasting, biochar amended soils under winter wheat-cover crop-sorghum rotation. Environmental Research Letters, 11 (8). 084013.

McCarthy, Mark J. and Gardner, Wayne S. and Lehmann, Moritz F. and Guindon, Alexandre and Bird, David F.. (2016) Benthic nitrogen regeneration, fixation, and denitrification in a temperate, eutrophic lake: Effects on the nitrogen budget and cyanobacteria blooms. Limnology and Oceanography, 61 (4). pp. 1406-1423.

Mohn, Joachim and Gutjahr, Wilhelm and Toyoda, Sakae and Harris, Eliza and Ibraim, Erkan and Geilmann, Heike and Schleppi, Patrick and Kuhn, Thomas and Lehmann, Moritz F. and Decock, Charlotte and Werner, Roland A. and Yoshida, Naohiro and Brand, Willi A.. (2016) Reassessment of the NH4NO3 thermal decomposition technique for calibration of the N2O isotopic composition. Rapid Communications in Mass Spectrometry, 30 (23). pp. 2487-2496.

Oswald, Kirsten and Jegge, Corinne and Tischer, Jana and Berg, Jasmine and Brand, Andreas and Miracle, Maria R. and Soria, Xavier and Vicente, Eduardo and Lehmann, Moritz F. and Zopfi, Jakob and Schubert, Carsten J.. (2016) Methanotrophy under Versatile Conditions in the Water Column of the Ferruginous Meromictic Lake La Cruz (Spain). Frontiers in Microbiology, 7. p. 1762.

Steinle, Lea and Schmidt, Mark and Bryant, Lee and Haeckel, Matthias and Linke, Peter and Sommer, Stefan and Zopfi, Jakob and Lehmann, Moritz F. and Treude, Tina and Niemannn, Helge. (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, 61. pp. 367-386.

Wenk, Christine B. and Frame, Caitlin H. and Koba, Keisuke and Casciotti, Karen L. and Veronesi, Mauro and Niemann, Helge and Schubert, Carsten J. and Yoshida, Naohiro and Toyoda, Sakae and Makabe, Akiko and Zopfi, Jakob and Lehmann, Moritz F.. (2016) Differential N2O dynamics in two oxygen-deficient lake basins revealed by stable isotope and isotopomer distributions. Limnology and Oceanography, 61 (5). pp. 1735-1749.

Blees, Jan and Niemann, Helge and Erne, Markus and Zopfi, Jakob and Schubert, Carsten J. and Lehmann, Moritz F.. (2015) Spatial variations in surface water methane super-saturation and emission in Lake Lugano, southern Switzerland. Aquatic sciences, 77 (4). pp. 535-545.

Steinle, Lea and Graves, Carolyn A. and Treude, Tina and Ferre, Benedicte and Biastoch, Arne and Bussmann, Ingeborg and Berndt, Christian and Krastel, Sebastian and James, Rachael H. and Behrens, Erik and Boening, Claus W. and Greinert, Jens and Sapart, Celia-Julia and Scheinert, Markus and Sommer, Stefan and Lehmann, Moritz F. and Niemann, Helge. (2015) Water column methanotrophy controlled by a rapid oceanographic switch. Nature geoscience, 8 (5). pp. 378-382.

Weber, Yuki and De Jonge, Cindy and Rijpstra, W. Irene C. and Hopmans, Ellen C. and Stadnitskaia, Alina and Schubert, Carsten J. and Lehmann, Moritz F. and Damste, Jaap S. Sinninghe and Niemann, Helge. (2015) Identification and carbon isotope composition of a novel branched GDGT isomer in lake sediments: evidence for lacustrine branched GDGT production. Geochimica et cosmochimica acta, 154. pp. 118-129.

Saarenheimo, Jatta and Rissanen, Antti J. and Arvola, Lauri and Nykänen, Hannu and Lehmann, Moritz F. and Tiirola, Marja. (2015) Genetic and Environmental Controls on Nitrous Oxide Accumulation in Lakes. PLoS one, 10 (3). e0121201.

Courty, Pierre-Emmanuel and Doubkova, Pavia and Calabrese, Silvia and Niemann, Helge and Lehmann, Moritz F. and Vosatka, Miroslav and Selosse, Marc-Andre. (2015) Species-dependent partitioning of C and N stable isotopes between arbuscular mycorrhizal fungi and their C3 and C4 hosts. Soil biology & biochemistry, 82. pp. 52-61.

Naeher, Sebastian and Huguet, Arnaud and Roose-Amsaleg, Celine L. and Laverman, Anniet M. and Fosse, Celine and Lehmann, Moritz F. and Derenne, Sylvie and Zopfi, Jakob. (2015) Molecular and geochemical constraints on anaerobic ammonium oxidation (anammox) in a riparian zone of the Seine Estuary (France). Biogeochemistry, 123 (1-2). pp. 237-250.

Niemann, Helge and Steinle, Lea and Blees, Jan and Bussmann, Ingeborg and Treude, Tina and Krause, Stefan and Elvert, Marcus and Lehmann, Moritz F.. (2015) Toxic effects of lab-grade butyl rubber stoppers on aerobic methane oxidation. Limnology and oceanography: methods, 13. pp. 40-52.

Rohde, M. M. and Granger, J. and Sigman, D. M. and Lehmann, M. F.. (2015) Coupled nitrate N and O stable isotope fractionation by a natural marine plankton consortium. Frontiers in Marine Science, 2. p. 28.

Lehmann, M. F. and Simona, M. and Wyss, S. and Blees, J. H. and Frame, C. H. and Niemann, H. and 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. Frontiers in Earth Scienecs, 3. p. 45.

Wankel, S. D. and Buchwald, C. and Ziebis, W. and Wenk, Christine B. and Lehmann, Moritz F.. (2015) Nitrogen cycling in the subsurface biosphere: Nitrate isotopes in porewaters underlying the oligotrophic North Atlantic. Biogeosciences, 12. pp. 7483-7502.

Wenk, Christine B. and Zopfi, Jakob and Blees, Jan and Veronesi, Mauro L. and Niemann, Helge and Lehmann, Moritz F.. (2014) Community N and O isotope fractionation by sulfide-dependent denitrification and anammox in a stratified lacustrine water column. Geochimica et cosmochimica acta, Vol. 125. pp. 551-563.

Blees, Jan and Niemann, Helge and Wenk, Christine B. and Zopfi, Jakob and Schubert, Carsten J. and Kirf, Matthias T. and Veronesi, Mauro and Hitz, Carmen and Lehmann, Moritz F.. (2014) Micro-aerobic bacterial methane oxidation in the chemocline and anoxic water column of deep south-Alpine Lake Lugano (Switzerland). Limnology and oceanography, Vol. 59, H. 2. pp. 311-324.

Blees, Jan and Niemann, Helge and Wenk, Christine B. and Zopfi, Jakob and Schubert, Carsten J. and Jenzer, Joel S. and Veronesi, Mauro and Lehmann, Moritz F.. (2014) Bacterial methanotrophs drive the formation of a seasonal anoxic benthic nepheloid layer in an alpine lake. Limnology and oceanography, Vol. 59, H. 4. pp. 1410-1420.

Wenk, Christine B. and Zopfi, Jakob and Blees, Jan and Gardner, Wayne S. and McCarthy, Mark and Niemann, Helge and Veronesi, Mauro and Lehmann, Moritz F.. (2014) Partitioning between benthic and pelagic nitrate reduction in the Lake Lugano south basin. Limnology and oceanography, Vol. 59, H. 4. pp. 1421-1433.

Bourbonnais, Annie and Juniper, S. Kim and Butterfield, David A. and Anderson, Rika E. and Lehmann, Moritz F.. (2014) Diversity and abundance of Bacteria and nirS-encoding denitrifiers associated with the Juan de Fuca Ridge hydrothermal system. Annals of microbiology, Vol. 64, H. 4. pp. 1691-1705.

Dabundo, R. and Lehmann, Moritz F. and Treibergs, L. and Tobias, C. L. and Altabet, M. A. and Moisander, P. H. and Granger, J.. (2014) The contamination of commercial 15N2 gas stocks with 15N-labeled nitrate and ammonium and consequences for 
nitrogen fixation measurements. PLoS one, Vol. 9, H. 10 , e110335. pp. 1691-1705.

Henneberger, Ruth and Chiri, Eleonora and Blees, Jan and Niemann, Helge and Lehmann, Moritz F. and Schroth, Martin H.. (2013) Field-scale labelling and activity quantification of methane-oxidizing bacteria in a landfill-cover soil. FEMS Microbiology Ecology, Vol. 83, H. 2. pp. 392-401.

Wenk, Christine B. and Blees, Jan and Zopfi, Jakob and Veronesi, Mauro and Bourbonnais, Annie and Schubert, Carsten J. and Niemann, Helge and Lehmann, Moritz F.. (2013) Anaerobic ammonium oxidation (anammox) bacteria and sulfide-dependent denitrifiers coexist in the water column of a meromictic south-alpine lake. Limnology and Oceanography, 58 (1). pp. 1-12.

Koegel, S. and T. Boller, M. F. Lehmann and Wiemken, A.. (2013) Rapid nitrogen transfer in the Sorghum bicolor : glomus mosseae arbuscular mycorrhizal symbiosis. Plant signaling & behavior, Vol. 8, H. 8 , e25229.

Zurbruegg, R. and Suter, S. and Lehmann, M. F. and Wehrli, B. and Senn, D. B.. (2013) Organic carbon and nitrogen export from a tropical dam-impacted floodplain system. Biogeosciences, Vol. 10, H. 1. pp. 23-38.

Wunderlin, Pascal and Lehmann, Moritz F. and Siegrist, Hansruedi and Tuzson, Bela and Joss, Adriano and Emmenegger, Lukas and Mohn, Joachim. (2013) Isotope Signatures of N2O in a Mixed Microbial Population System : Constraints on N2O Producing Pathways in Wastewater Treatment. Environmental science & technology, Vol. 47, H. 3. pp. 1339-1348.

Wirth, Stefanie B. and Gilli, Adrian and Niemann, Helge and Dahl, Tais W. and Ravasi, Damiana and Sax, Nadja and Hamann, Yvonne and Peduzzi, Raffaele and Peduzzi, Sandro and Tonolla, Mauro and Lehmann, Moritz F. and Anselmetti, Flavio S.. (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, Vol. 120. pp. 220-238.

Walder, Florian and Niemann, Helge and Lehmann, Moritz F. and Boller, Thomas and Wiemken, Andres and Courty, Pierre-Emmanuel. (2013) Tracking the carbon source of arbuscular mycorrhizal fungi colonizing C-3 and C-4 plants using carbon isotope ratios (delta C-13). Soil biology & biochemistry, Vol. 58. pp. 341-344.

Thibodeau, Benoit and Helie, Jean-Francois and Lehmann, Moritz F.. (2013) Variations of the nitrate isotopic composition in the St. Lawrence River caused by seasonal changes in atmospheric nitrogen inputs. Biogeochemistry, Vol. 115, H. 1-3. pp. 287-298.

McCarthy, Mark J. and Gardner, Wayne S. and Lehmann, Moritz F. and Bird, David F.. (2013) Implications of water column ammonium uptake and regeneration for the nitrogen budget in temperate, eutrophic Missisquoi Bay, Lake Champlain (Canada/USA). Hydrobiologia, Vol. 718, H. 1. pp. 173-188.

Carstens, Doerte and Lehmann, Moritz F. and Hofstetter, Thomas B. and Schubert, Carsten J.. (2013) Amino acid nitrogen isotopic composition patterns in lacustrine sedimenting matter. Geochimica et cosmochimica acta, Vol. 121. pp. 328-338.

Brunner, Benjamin and Contreras, Sergio and Lehmann, Moritz F. and Matantseva, Olga and Rollog, Mark and Kalvelage, Tim and Klockgether, Gabriele and Lavik, Gaute and Jetten, Mike S. M. and Kartal, Boran and Kuypers, Marcel M. M.. (2013) Nitrogen isotope effects induced by anammox bacteria. Proceedings of the National Academy of Sciences of the United States of America, Vol. 110, H. 47. pp. 18994-18999.

Bourbonnais, A. and M. F. Lehmann, R. Hamme and Manning, C. and Juniper, S. K.. (2013) Nitrate elimination and regeneration as evidenced by dissolved inorganic nitrogen isotopes in Saanich Inlet, a seasonally anoxic fjord. Marine chemistry, Vol. 157. pp. 194-207.

Alkhatib, M. and del Giorgio, P. A. and Gelinas, Y. and Lehmann, M. F.. (2013) Benthic fluxes of dissolved organic nitrogen in the Lower St. Lawrence Estuary and implications for selective organic matter degradation. Biogeosciences, Vol. 10. pp. 7609-7622.

Galbraith, Eric D. and Kienast, Markus and Albuquerque, Ana Luiza and Altabet, Mark A. and Batista, Fabian and Bianchi, Daniele and Calvert, Stephen E. and Contreras, Sergio and Crosta, Xavier and De Pol-Holz, Ricardo and Dubois, Nathalie and Etourneau, Johan and Francois, Roger and Hsu, Ting-Chang and Ivanochko, Tara and Jaccard, Samuel L. and Kao, Shuh-Ji and Kiefer, Thorsten and Kienast, Stephanie and Lehmann, Moritz F. and Martinez, Philippe and McCarthy, Matthew and Meckler, Anna Nele and Mix, Alan and Moebius, Juergen and Pedersen, Tom F. and Pichevin, Laetitia and Quan, Tracy M. and Robinson, Rebecca S. and Ryabenko, Evgeniya and Schmittner, Andreas and Schneider, Ralph and Schneider-Mor, Aya and Shigemitsu, Masahito and Sinclair, Dan and Somes, Christopher and Studer, Anja S. and Tesdal, Jan-Erik and Thunell, Robert and Yang, Jin-Yu Terence. (2013) The acceleration of oceanic denitrification during deglacial warming. Nature geoscience, Vol. 6, H. 7. pp. 579-584.

Freymond, C. V. and Wenk, C. B. and Frame, C. H. and Lehmann, M. F.. (2013) Year-round N2O production by benthic NOx reduction in a monomictic south-alpine lake. Biogeosciences, Vol. 10. pp. 8373-8383.

Peter, S. and Rechsteiner, R. and Lehmann, M. F. and Brankatschk, R. and Vogt, T. and Diem, S. and Wehrli, B. and Tockner, K. and Durisch-Kaiser, E.. (2012) Nitrate removal in a restored riparian groundwater system : functioning and importance of individual riparian zones. Biogeosciences discussions, Vol. 9, H. 6. pp. 4295-4307.

Robinson, R. S. and M. Kienast, A. Albuquerque and M. Altabet, S. Contreras Quintana and R. De Pol-Holz, N. Dubois and R. Francois, E. Galbraith and T. Ivanochko, S. Jaccard S. -J. Kao and T. Kiefer, S. Kienast and M. F. Lehmann, P. Martinez and M. McCarthy, J. Möbius and T. F. Pedersen, T. M. Quan and E. Ryabenko, A. Schmittner and R. Schneider, A. Schneider-Mor and M. Shigemitsu, D. Sinclair and C. Somes, A. Studer and Thunell, R.. (2012) A review of nitrogen isotopic alteration in marine sediments. Paleoceanography, Vol. 27, no. 4 , PA4203.

Walder, F. and Niemann, H. and Natarajan, M. and Lehmann, M. F. and Boller, T. and Wiemken, A.. (2012) Mycorrhizal Networks : Common Goods of Plants Shared under Unequal Terms of Trade. Plant physiology, Vol. 159, H. 2. pp. 789-797.

Bourbonnais, A. and Juniper, S. K. and Butterfield, D. A. and Devol, A. H. and Kuypers, M. M. M. and Lavik, G. and Hallam, S. J. and Wenk, C. B. and Chang, B. X. and Murdock, S. A. and Lehmann, M. F.. (2012) Activity and abundance of denitrifying bacteria in the subsurface biosphere of diffuse hydrothermal vents of the Juan de Fuca Ridge. Biogeosciences discussions, Vol. 9, H. 4. pp. 4661-4678.

Alkhatib, Mohammad and Schubert, Carsten J. and del Giorgio, Paul A. and Gelinas, Yves and Lehmann, Moritz F.. (2012) Organic matter reactivity indicators in sediments of the St. Lawrence Estuary. Estuarine, coastal and shelf science, Vol. 102–103. pp. 36-47.

Alkhatib, M. and Lehmann, M. F. and del Giorgio, P. A.. (2012) The nitrogen isotope effect of benthic remineralization-nitrification-denitrification coupling in an estuarine environment. Biogeosciences, Vol. 9, H. 5. pp. 1633-1646.

Bourbonnais, Annie and Lehmann, Moritz F. and Butterfield, David A. and Juniper, S. Kim. (2012) Subseafloor nitrogen transformations in diffuse hydrothermal vent fluids of the Juan de Fuca Ridge evidenced by the isotopic composition of nitrate and ammonium. Geochemistry, geophysics, geosystems, Vol. 13, H. 1 , Q02T01.

Niemann, H. and Stadnitskaia, A. and Wirth, S. B. and Gilli, A. and Anselmetti, F. S. and Sinninghe Damsté, J. S. and Schouten, S. and Hoppmans, E. C. and Lehmann, M. F.. (2012) Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT-paleothermometer. Climate of the Past, Vol. 8. pp. 889-906.

Sherwood, O. A. and Lehmann, M. F. and Schubert, C. J. and Scott, D. B. and McCarthy, M. D.. (2011) Nutrient regime shift in the western North Atlantic indicated by compound-specific delta(15)N of deep-sea gorgonian corals. Proceedings of the National Academy of Sciences of the United States of America, Vol. 108, H. 3. pp. 1011-1015.

Rutschmann, S. and Matschiner, M. and Damerau, M. and Muschick, M. and Lehmann, M. F. and Hanel, R. and Salzburger, W.. (2011) Parallel ecological diversification in Antarctic notothenioid fishes as evidence for adaptive radiation. Molecular ecology, Vol. 20, no. 22. pp. 4707-4721.

Thibodeau, B. and Lehmann, M. F. and Kowarzyk, J. and Mucci, A. and Gélinas, Y. and Gilbert, D. and Maranger, R. and Alkhatib, M.. (2010) Benthic nutrient fluxes along the Laurentian Channel: Impacts on the N budget of the St. Lawrence marine system. Estuarine, Coastal and Shelf Science, Vol. 90. pp. 195-205.

Ariztegui, D. and Anselmetti, F. S. and Robbiani, J. M. and Bernasconi, S. M. and Brati, E. and Gilli, A. and Lehmann, M. F.. (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, H. 3-4. pp. 183-192.

Somes, C. and Schmittner, J. A. and Galbraith, E. D. and Lehmann, M. F. and Altabet, M. A. and Montoya, J. P. and Letelier, R. M. and Mix, A. C. and Bourbonnais, A. and Eby, M.. (2010) Simulating the global distribution of nitrogen isotopes in the ocean. Global biogeochemical cycles, Vol. 24 , GB4019.

Lehmann, M. F. and Barnett, B. and Gélinas, Y. and Gilbert, D. and Maranger, R. and Mucci, A. and Sundby, B. and Thibodeau, B.. (2009) Isotopic constraints on oxygen sink partitioning in the Lower St. Lawrence Estuary. Limnology and Oceanography, 54, 6. pp. 2157-2169.

Sigman, D. M. and DiFiore, P. J. and Hain, M. P. and Deutsch, C. and Wang, Y. and Lehmann, M. F. and Pantoja, S.. (2009) The dual isotopes of deep nitrate as a constraint on the cycle and budget of oceanic fixed nitrogen. Deep-sea research. Part I, Oceanographic research papers, Vol. 56. pp. 1419-1439.

Bourbonnais, A. and Lehmann, M. F. and Waniek, J. J. and Schulz-Bull, D. E.. (2009) Nitrate isotope anomalies reflect N-2 fixation in the Azores Front region (subtropical NE Atlantic). Journal of Geophysical Research. C, Oceans, Vol. 114 , C03003.

Granger, J. and Sigman, D. M. and Lehmann, M. F. and Tortell, P. D.. (2008) Nitrogen and oxygen isotope fractionation during dissimilatory nitrate reduction by denitrifying bacteria. Limnology and Oceanography, 53, 6. pp. 2533-2545.

Cloquet, C. and Carignan, J. and Lehmann, M. F. and Vanhaecke, F.. (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, Vol. 390, H. 2. pp. 451-463.

Kienast, M. and Lehmann, M. F. and Timmermann, A. and Galbraith, E. and Bolliet, T. and Holboum, A. and Normandeau, C. and Laj, C.. (2008) A mid-Holocene transition in the nitrogen dynamics of the western equatorial Pacific : evidence of a deepening thermocline? Geophysical research letters, Vol. 35, no. 23 , 5 S..

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

Granger, J. and Sigman, D. M. and Prokopenko, M. G. and Lehmann, M. F. and Tortell, P. D.. (2006) A method for nitrite removal in nitrate N and O isotope analyses. Limnology and Oceanography : Methods, Vol. 15, H. 4. pp. 205-212.

Lehmann, M. F. and Sigman, D. M. and McCorkle, D. C. and Brunelle, B. G. and Hoffmann, S. and Kienast, M. and Cane, G. and Clement, J.. (2005) 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, H. 4. pp. 1-15.

Sigman, D. M. and Granger, J. and DiFiore, P. J. and Lehmann, M. M. and Ho, R. and Cane, G. and van Geen, A.. (2005) Coupled nitrogen and oxygen isotope measurements of nitrate along the eastern North Pacific margin. Global biogeochemical cycles, Vol. 19, H. 4 , 14 S..

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

Lehmann, M. F. and Sigman, D. M. and Berelson, W. M.. (2004) Coupling the N-15/N-14 and O-18/O-16 of nitrate as a constraint on benthic nitrogen cycling. Marine chemistry, Vol. 88, nos. 1/2. pp. 1-20.

Lehmann, M. F. and Bernasconi, S. M. and McKenzie, J. A. and Barbieri, A. and Simona, M. and Veronesi, M.. (2004) Seasonal variation of the delta C-13 and delta N-15 of particulate and dissolved carbon and nitrogen in Lake Lugano: Constraints on biogeochemical cycling in a eutrophic lake. Limnology and Oceanography, 49, 2. pp. 415-429.

Lehmann, M. F. and Bernasconi, S. M. and Reichert, P. and Barbieri, A. and McKenzie, J. A.. (2003) Nitrogen and oxygen isotope fractionation during denitrification in a lacustrine redox-transition zone. Geochimica et cosmochimica acta, 67, Nr. 14. pp. 2529-2542.

Lehmann, M. F. and Bernasconi, S. M. and Barbieri, A. and McKenzie, J. A.. (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, 66, Nr. 20. pp. 3573-3584.

Lehmann, M. F. and Bernasconi, M. and McKenzie, J. A.. (2001) A method for the extraction of ammonium from freshwaters for nitrogen isotope analysis. Analytical chemistry, Vol. 73, no. 19. pp. 4717-4721.