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Bruno LANSARD

Equipe OCEANIS

CEA - Orme des Merisiers, Bâtiment ICE - 714, bureau 007

Tél. : (+33) 01.69.08.00.87
bruno.lansard@lsce.ipsl.fr

Maître de Conférences à l'Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)

37ème section du CNU : Météorologie, océanographie physique de l'environnement

Sujets de recherche

Experiences dotorales et postdoctorales

Publications scientifiques

Articles publiés dans des revues internationales de rang A :

  1. Rabouille C., Lansard B., Owings S.M., Rabalais N.N., Bombled B., Metzger E., Richirt J., Eitel E.M., Boever A., Beckler J. and M. Taillefert (2021). Early diagenesis in the hypoxic and acidified zone of the northern Gulf of Mexico: is organic matter recycling in sediments disconnected from the water column? Frontiers in Marine Science, 8(199). https://doi.org/10.3389/fmars.2021.604330
  2. Massicotte P., et al., (2021) The Malina oceanographic expedition: How do changes in ice cover, permafrost and UV radiation impact biodiversity and biogeochemical fluxes in the Arctic Ocean? Earth System Science Data. https://essd.copernicus.org/preprints/essd-2020-252/
  3. Ait Ballagh, F. E., Rabouille, C., Andrieux-Loyer, F., Soetaert, K., Lansard, B., Bombled, B., Monvoisin, G., Elkalay, K., and Khalil, K. (2021), Spatial Variability of Organic Matter and Phosphorus Cycling in Rhône River Prodelta Sediments (NW Mediterranean Sea, France): a Model-Data Approach, Estuaries and Coasts. https://doi.org/10.1007/s12237-020-00889-9
  4. Owings, S.M., L. Bréthous, E.M. Eitel, B.P. Fields, A. Boever, J.S. Beckler, B. Bombled, B. Lansard, E. Metzger, C. Rabouille, and M. Taillefert (2021). Differential manganese and iron recycling and transport in continental margin sediments of the Northern Gulf of Mexico, Marine Chemistry, 229, 103908. https://doi.org/10.1016/j.marchem.2020.103908
  5. Fossile E., Nardelli M.P., Jouini A., Lansard B., Pusceddu A., Moccia D., Michel E., Péron O., Howa H., and M. Mojtahid (2020). Benthic foraminifera as tracers of brine production in Storfjorden "sea ice factory", Biogeosciences, 17, 1933–1953, 2020, https://doi.org/10.5194/bg-17-1933-2020
  6. Rassmann J., Eitel E., Cathalot C., Brandily C., Lansard B., Taillefert M., and C. Rabouille (2020). Benthic alkalinity and dissolved inorganic carbon fluxes in the Rhône River prodelta generated by decoupled aerobic and anaerobic processes, Biogeosciences, 17, 13-33. https://doi.org/10.5194/bg-17-13-2020
  7. Ehn, J.K., Reynolds R.A., Stramski D., Doxaran D., Lansard, B., and M. Babin (2019). Patterns of suspended particulate matter across the continental margin in the Canadian Beaufort Sea during summer, Biogeosciences, 16, 1583-1605. https://doi.org/10.5194/bg-16-1583-2019
  8. Rassmann J., Lansard B., Gazeau F., Guidi-Guilvard L., Pozzato L., Alliouane S., Grenz C., and C. Rabouille (2018). Impact of ocean acidification on the biogeochemistry and meiofaunal assemblage of carbonate-rich sediments: Results from core incubations (Bay of Villefranche, Mediterranean Sea), Marine Chemistry, 203: 112-119. https://doi.org/10.1016/j.marchem.2018.05.006
  9. Pozzato L., Rassmann J., Lansard B., Dumoulin J.-P., van Breugel P., and C. Rabouille (2018). Origin of remineralized organic matter in sediments from the Rhone River prodelta (NW Mediterranean) traced by Δ14C and δ13C signatures of pore water DIC. Progress in Oceanography, 163: 112-122. https://doi.org/10.1016/j.pocean.2017.05.008
  10. Mucci A., Levasseur M., Gratton Y., Martias C., Scarratt M., Gilbert D., Tremblay J.-É., Ferreyra G., and B. Lansard (2018). Tidally-induced variations of pH at the head of the Laurentian Channel, Canadian Journal of Fisheries and Aquatic Sciences, 75 (7): 1128-1141. https://doi.org/10.1139/cjfas-2017-0007
  11. Rassmann J., Lansard B., Pozzato L., and C. Rabouille (2016). Carbonate chemistry in sediment pore waters of the Rhône River delta driven by early diagenesis (NW Mediterranean), Biogeosciences, 13: 5379-5394. https://doi.org/10.5194/bg-13-5379-2016
  12. Varela D., Brzezinski M., Beucher C., Jones J., Giesbrecht K., Lansard B., and A. Mucci (2016). Heavy silicon isotopic composition of silicic acid and biogenic silica in Arctic waters over the Beaufort shelf and the Canada Basin, Global Biogeochemical Cycles, 30: 804-824. https://doi:10.1002/2015GB005277
  13. Sanial V., van Beek P., Lansard B., Souhaut M., Kestenare E., d'Ovidio F., Zhou M., and S. Blain (2015). Use of Ra isotopes to deduce rapid transfer of sediment-derived inputs off Kerguelen, Biogeosciences, 12: 14015-14030. https://doi.org/10.5194/bg-12-1415-2015
  14. Tremblay J.-É., Raimbault P., Garcia N., Lansard B., Babin M., and J. Gagnon (2014). Impact of river discharge, upwelling and vertical mixing on the nutrient loading and productivity of the Canadian Beaufort Shelf. Biogeosciences, 11: 4853-4868. https://doi.org/10.5194/bg-11-4853-2014
  15. Sanial V., van Beek P., Lansard B., d'Ovidio F., Kestenare E., Souhaut M., Zhou M., and S. Blain (2014). Study of the phytoplankton plume dynamics off the Crozet Islands (Southern Ocean): A geochemical-physical coupled approach. Journal of Geophysical Research: Oceans, 119 (4): 2227-2237. https://doi.org/10.1002/2013JC009305
  16. Forest A., Coupel P., Else B., Nahavandian S., Lansard B., Raimbault P., Papakyriakou T.N., Gratton Y., Fortier L., Tremblay J.-É., and M. Babin (2014). Synoptic evaluation of carbon cycling in Beaufort Sea during summer: contrasting river inputs, ecosystem metabolism and air-sea CO2 fluxes. Biogeosciences, 11: 2827-2856. https://doi.org/10.5194/bg-11-2827-2014
  17. Else B., Galley R.J., Lansard B., Barber D.G., Brown K., Miller L.A., Mucci A., Papakyriakou T.N., Tremblay J.-É., and S. Rysgaard (2013), Further observations of a decreasing atmospheric CO2 uptake capacity in the Canada Basin (Arctic Ocean) due to sea ice loss, Geophysical Research Letters, 40 (6): 1132-1137. https://doi.org/10.1002/grl.50268
  18. Cathalot C., Rabouille C., Tisnérat-Laborde N., Toussaint F., Kerhervé P., Buscail R., Loftis K., Sun M.-Y., Tronczynski J., Azoury S., Lansard B., Treignier C., Pastor L., and S. Tesi (2013). The fate of river organic carbon in coastal areas: a study in the Rhône River delta using multiple isotopic (δ 13C, Δ 14C) and organic tracers. Geochimica et Cosmochimica Acta, 118: 33-55. https://doi.org/10.1016/j.gca.2013.05.001
  19. van Beek P., Souhaut M., Lansard B., Bourquin M., Reyss J.-L., von Ballmoos P., and P. Jean (2013). LAFARA: a new underground laboratory in the French Pyrénées for ultra-low-level gamma-ray spectrometry. Journal of Environmental Radioactivity, 116: 152-158. https://doi.org/10.1016/j.jenvrad.2012.10.002
  20. Magen C., Lansard B. and S. Crowe (2012). Preface to Bjørn Sundby’s Special Issue of Aquatic Geochemistry. Aquatic Geochemistry, 18 (6): 457-460. https://doi.org/10.1007/s10498-012-9182-3
  21. Cathalot C., Lansard B., Hall P.O.J., Tengberg A., Almroth-Rosell E., Apler A., Calder L., Bell E., and C. Rabouille (2012). Influence of a fish farm on oxygen sediment uptake rates in the Loch Creran (Scotland). Aquatic Geochemistry, 18 (6): 515-541. https://doi.org/10.1007/s10498-012-9181-4
  22. Evrard O., van Beek P., Gateuille D., Pont V., Lefèvre I., Lansard B., and P. Bonté (2012). Evidence of the radioactive fallout in France due to the Fukushima nuclear accident. Journal of Environmental Radioactivity, 114: 54-60. https://doi.org/10.1016/j.jenvrad.2012.01.024
  23. Lansard B., Mucci A., Miller L.A., Macdonald R.W., and Y. Gratton (2012). Variability of water mass distribution in the southeastern Beaufort Sea determined by total alkalinity and δ18O data. Journal of Geophysical Research, 117: C03003. https://doi.org/10.1029/2011JC007299
  24. Chierici M., Fransson A., Lansard B., Miller L.A., Mucci A., Shadwick E., Thomas H., Tremblay J.-E., and T.N. Papakyriakou (2011). Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean. Journal of Geophysical research, 116: C00G09. https://doi.org/10.1029/2011JC007184
  25. Thomas .H, Shadwick E., Dehairs F., Lansard B., Mucci A., Navez J., Gratton Y., Prowe F., Chierici M., Fransson A., Papakyriakou T.N., Sternberg E., Miller L., Tremblay J.-É., and C. Monin (2011). Barium and carbon fluxes in the Canadian Arctic Archipelago. Journal of Geophysical research, 116: C00G08. https://doi.org/10.1029/2011JC007120
  26. Goineau A., Fontanier C., Jorissen F., Lansard B., Buscail R., Mouret A., Kerhervé P., Zaragosi S., Ernoult E., Artéro C., Anschutz P., Metzger E., and C. Rabouille (2011) Live (stained) benthic foraminifera from the Rhône prodelta (Gulf of Lion, NW Mediterranean): Environmental controls on a river-dominated shelf. Journal of Sea Research, 65 (1): 58-75. https://doi.org/10.1016/j.seares.2010.07.007
  27. Mucci A., Lansard B., Miller L.A., and T.N. Papakyriakou (2010). CO2 fluxes across the air-sea interface in the southeastern Beaufort Sea: the ice-free period. Journal of Geophysical Research. 115, C04003. https://doi.org/10.1029/2009JC005330
  28. Mojtahid M., Jorissen F., Lansard B., and C. Fontanier (2010). Microhabitat selection of benthic foraminifera in sediments off the Rhône River mouth (NW Mediterranean), The Journal of Foraminiferal Research, 40 (3): 231-246. https://doi.org/10.2113/gsjfr.40.3.231
  29. Rabouille C., Caprais J.-C., Lansard B., Crassous P., Dedieu K., Reyss J.-L., and A. Khripounoff (2009). In situ measurements of sediment oxygen consumption and organic matter budget in the Southeast Atlantic continental margin close to the Congo Canyon. Deep-Sea Research part I, 56 (23): 2223-2238. https://doi.org/10.1016/j.dsr2.2009.04.005
  30. Lansard B., Rabouille C., Grenz C., and L. Denis (2009). Benthic remineralization at the land-ocean interface: A case study of the Rhône River, Gulf of Lions. Estuarine Coastal and Shelf Science, 81 (4): 544-554. https://doi.org/10.1016/j.ecss.2008.11.025
  31. Mojtahid M., Jorissen F., Lansard B., Fontanier C., Bombled B., and C. Rabouille (2009). Spatial distribution of live benthic foraminifera in the Rhône prodelta: Faunal response to a continental-marine organic matter gradient. Marine Micropaleontology, 70: 177-200. https://doi.org/10.1016/j.marmicro.2008.12.006
  32. Lansard B., Rabouille C., Denis L., and C. Grenz (2008). In situ oxygen uptake rates by sediment under the influence of the Rhône River. Continental Shelf Research, 28: 1501-1510. https://doi.org/10.1016/j.csr.2007.10.010
  33. Rabouille C., Conley D., Dai M., Cai W.-J., Chen C., Lansard B., Green R., Yin K., Harrison P., Dagg M., and B. McKee (2008). Comparison of hypoxia among four river-coastal systems, the Changjiang (Yangtze River), Mississippi, Pearl River and Rhône. Continental Shelf Research, 28: 1527-1537. https://doi.org/10.1016/j.csr.2008.01.020
  34. Soltwedel T., Lansard B., Gilbert F., Hasemann C., Bell E., Sablotny B., Eagle M., Kershaw P., and C. Rabouille (2008). An “Integrated Sediment Disturber” (ISD) to study the impact of repeated physical perturbations on sediment geochemistry and the small benthic biota. Limnology and Oceanography Methods, 6: 307-318. https://doi.org/10.4319/lom.2008.6.307
  35. Fontanier C., Jorissen F.J., Lansard B., Mouret A., Buscail R., Schmidt S., Kerhervé P., Buron F., Zaragosi S., Hunault G., Ernoult E., Artero C., Anschutz P., and C. Rabouille (2008). Live foraminifera from the open slope between Grand Rhône and Petit Rhône Canyons (NW Mediterranean). Deep Sea Research Part I, 55: 1532-1553. https://doi.org/10.1016/j.dsr.2008.07.003
  36. Lansard B., Charmasson S., Gascó C., Antón M.-P., Grenz C., and M. Arnaud (2007). Spatial and temporal variations of plutonium isotopes (238PPu and 239,240PPu) in sediments off the Rhone River mouth (NW Mediterranean). Science of the Total Environment, 376: 215-227. https://doi.org/10.1016/j.scitotenv.2007.01.069
  37. Lansard B., Grenz C., Charmasson S., Schaaff E., and C. Pinazo (2006). Potential plutonium remobilisation linked to marine sediment resuspension: an estimate based on flume experiments. Journal of Sea Research, 55: 74-85. https://doi.org/10.1016/j.seares.2005.08.003
  38. Schaaff E., Grenz C., Pinazo C., and B. Lansard (2006). Field and laboratory measurements of sediment erodability: a comparison. Journal of Sea Research, 55: 30-42. https://doi.org/10.1016/j.seares.2005.09.004
  39. Lansard B., Charmasson S., Eyrolle F., Arnaud M., and C. Grenz (2003). Plutonium isotopes remobilization from natural sediments (Gulf of Lions, Northwestern Mediterranean Sea): Estimation based on flume experiments. American Institute of Physics, 673: 99-101. https://doi.org/10.1063/1.1594566
  40. Rabouille C., Denis L., Dedieu K., Stora G., Lansard B., and C. Grenz (2003). Oxygen demand in coastal marine sediments: comparing in-situ microelectrodes and laboratory core incubations. Journal of Experimental Marine Biology and Ecology, 285-286: 49-69. https://doi.org/10.1016/S0022-0981(02)00519-1
  41. Lansard B., Rabouille C., and D. Massias (2003). Variability in benthic oxygen fluxes during the winter-spring transition in coastal sediments: an estimation by in-situ microelectrodes and laboratory minielectrodes. Oceanologica Acta, 26 (3): 269-279. https://doi.org/10.1016/S0399-1784(03)00013-6

Chapitre de livre :

  1. Papakyriakou T.N., Carnat G., Chierici M., Delille B., Else B., Fransson A., Geilfus N.-X, Lansard B., Miller L., Mucci A., Shadwick E., Thomas H. and J.-L. Tison (2012). Air-sea CO2 exchange and carbon source/sink dynamics in the Southeast Beaufort Sea. In “On the Edge: From Knowledge to Action during the Fourth International Polar Year, Circumpolar Flaw Lead Study (2007-2008)”: 109-122.

Enseignement

@ Université Paris-Saclay :

Cette formation est réalisée en étroite collaboration avec l'ESJ-Lille et l'AUF

@ UVSQ :

Méthodologie (TBI1, TD)

Environnement et Géosciences Appliquées (EN681, CM+TD)

Géomatique : Télédétéction (GEO614, TD)

Ecologie et Hydrobiologie (BI611, TP)

Divers

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