Items where Author is "Lehmann, M. F."

2015

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.

2013

Wenk, C. and Blees, Jan and Zopfi, J. and Veronesi, M. and Bourbonnais, A. and Schubert, C. J. and Niemann, H. and Lehmann, M. F.. (2013) Anammox bacteria and sulfide-dependent denitrifiers co-exist in the water column of a meromictic south-alpine lake. Limnology and oceanography, Vol. 58 , S. 1–12.

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.

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.

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.

2012

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.

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.

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.

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.

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.

2011

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.

2010

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.

2009

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.

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.

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.

2008

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..

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.

2007

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.

2006

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.

2005

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.

2004

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 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 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.

2003

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.

2002

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.

2001

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.