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15

Frédéric DIAZ Marine Biogeochemistry : data and modelling


My main research activity affects the development and the use of models of marine plankton ecosystem. The type of models that is developed reproduces the ecological and biogeochemical interactions arising between the first trophic levels of the microbial community (phytoplankton, bacterioplankton and zooplankton) in the Mediterranean Sea particularly. The development of the latter models and especially, the theoretical representation of the interactions between the planktonic functional key-groups are performed with the help of the experimental specialists on the biogeochemical cycles of nitrogen, silicon, phosphorus and iron.

The models of pelagic ecosystem developed (Eco3M) are coupled with model reproducing the hydrodynamics (SYMHONIE model, NEMOMED12). To couple the two latter types of models is able to assess the impact of the hydrodynamic processes on the spatial and temporal structuring of the planktonic community or also, to assess the amount and the dominant ways of export of the organic matter produced from the euphotic zone.

Another activity of my work is to study the impact of the global change on the planktonic ecosystem through the consecutive alterations of the oceanic circulation. The impact of the climatic variations over an intra-decadal to decadal period has been especially investigated by forcing the coupled hydrodynamic/biogeochemical model with outputs of a meteorological forecasting model.


Article dans une revue13 documents

  • Karine Leblanc, Bernard Queguiner, Frederic Diaz, Veronique Cornet, Mónica Michel-Rodriguez, et al.. Nanoplanktonic diatoms are globally overlooked but play a role in spring blooms and carbon export. Nature Communications, Nature Publishing Group, 2018, 9 (1), pp.953 〈10.1038/s41467-018-03376-9〉. 〈hal-01736429〉
  • Ghassen Halouani, Frida Ben Rais Lasram, Yunne-Jai Shin, Laure Velez, Philippe Verley, et al.. Modelling food web structure using an end-to-end approach in the coastal ecosystem of the Gulf of Gabes (Tunisia). Ecological Modelling, Elsevier, 2016, 339 (SI), pp.45-57. 〈10.1016/j.ecolmodel.2016.08.008〉. 〈hal-01443239〉
  • Marine Herrmann, Claude Estournel, Fanny Adloff, Frederic Diaz. Impact of climate change on the northwestern Mediterranean Sea pelagic planktonic ecosystem and associated carbon cycle. Journal of Geophysical Research. Oceans, Wiley-Blackwell, 2014, 119, pp.10.1002/2014JC010016. 〈10.1002/2014JC010016〉. 〈hal-01068504〉
  • P. A. Auger, C. Ulses, C. Estournel, Lars Stemman, S Somot, et al.. Interannual control of plankton communities by deep winter mixing and prey/predator interactions in the NW Mediterranean: results from a 30-year 3D modeling study. Progress in Oceanography, Elsevier, 2014, 124, pp.12-27. 〈10.1016/ j.pocean.2014.04.004〉. 〈hal-00987234〉
  • M Herrmann, Frederic Diaz, C. Estournel, P. Marsaleix, C. Ulses. Impact of atmospheric and oceanic interannual variability on the Northwestern Mediterranean Sea pelagic planktonic ecosystem and associated carbon cycle. Journal of Geophysical Research. Oceans, Wiley-Blackwell, 2013, 118, pp.1-22. 〈10.1002/jgrc.20405〉. 〈hal-00877463〉
  • Rose Campbell, Frederic Diaz, Zyiuan Hu, Andrea Doglioli, Anne Petrenko, et al.. Nutrients and plankton spatial distributions induced by a coastal eddy in the Gulf of Lion. Insights from a numerical model. Progress in Oceanography, Elsevier, 2013, 109, 10.1016/j.pocean.2012.09.005. 〈10.1016/j.pocean.2012.09.005〉. 〈hal-00739762〉
  • Maxime Vaugeois, Frederic Diaz, Francois Carlotti. A Mechanistic Individual-Based Model of the Feeding Processes for Oikopleura dioica. PLoS ONE, Public Library of Science, 2013, 8 (11), pp.e78255. 〈10.1371/journal.pone.0078255〉. 〈hal-00880527〉
  • Philippe Drobinski, Alesandro Anav, Cindy Lebeaupin Brossier, Guillaume Samson, Marc Stéfanon, et al.. Model of the Regional Coupled Earth system (MORCE): Application to process and climate studies in vulnerable regions. Environmental Modelling and Software, Elsevier, 2012, 35, pp.1-18. 〈10.1016/j.envsoft.2012.01.017〉. 〈hal-00679314〉
  • Melika Baklouti, Frederic Diaz, Christel Pinazo, Vincent Faure, Bernard Queguiner. Investigation of mechanistic formulations depicting phytoplankton dynamics for models of marine pelagic ecosystems and description of a new model. Progress in Oceanography, Elsevier, 2006, 71, pp.1-33. 〈10.1016/j.pocean.2006.05.002〉. 〈hal-00695892〉
  • Xavier Durrieu de Madron, Lionel Denis, Frédérique Diaz, Nicole Garcia, Cécile Guieu, et al.. Nutrients and carbon budgets for the gulf of Lions during the MOGLI cruises. Oceanologica Acta, Elsevier, 2003, 26 (4), pp.421-433. 〈10.1016/S0399-1784(03)00024-0〉. 〈hal-00166834〉
  • France Van Wambeke, Serge Heussner, Frédéric Diaz, Patrick Raimbault, Pascal Conan. Small-scale variability in the coupling/uncoupling of bacteria, phytoplankton and organic carbon fluxes along the continental margin of the Gulf of Lions, Northwestern Mediterranean Sea. Journal of Marine Systems, Elsevier, 2002, 33-34, pp.411-429. 〈10.1016/S0924-7963(02)00069-6〉. 〈hal-01780342〉
  • Patrick Raimbault, Frederic Diaz, W Pouvesle, B Boudjellal. Simultaneous determination of particulate organic carbon, nitrogen and phosphorus collected on filters, using a semi-automatic wet-oxidation method. Marine Ecology Progress Series, Inter-Research, 1999, 180, pp.289-295. 〈hal-00698597〉
  • Patrick Raimbault, W Pouvesle, Frederic Diaz, Nicole Garcia, Richard Sempere. Wet-oxidation and automated colorimetry for simultaneous determination of organic carbon, nitrogen and phosphorus dissolved in seawater. Marine Chemistry, Elsevier, 1999, 66, pp.161-169. 〈hal-00699096〉

Poster1 document

  • Philippe Drobinski, Alesandro Anav, Cindy Lebeaupin-Brossier, Guillaume Samson, Marc Stéfanon, et al.. HyMeX - Model of the Regional Coupled Earth system (MORCE): application to process and climate studies in the Mediterranean region. WCRP Open Science Conference, Oct 2011, Denver, United States. pp.TH224A, 2011. 〈hal-00668530〉

Communication dans un congrès1 document

  • Anne Petrenko, Andrea Doglioli, Marion Kersale, Francesco Nencioli, Francesco D'Ovidio, et al.. Coastal mesoscale processes and submesoscale horizontal diffusivity during LATEX. SYNBIOS, Jul 2015, Paris, France. 〈hal-01167252〉