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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.

Journal articles34 documents

  • Julien Jouanno, Rachid Benshila, Léo Berline, Antonin Soulié, Marie-Hélène Radenac, et al.. A NEMO-based model of Sargassum distribution in the tropical Atlantic: description of the model and sensitivity analysis (NEMO-Sarg1.0). Geoscientific Model Development Discussions, Copernicus Publ, 2021, 14 (6), pp.4069 - 4086. ⟨10.5194/gmd-14-4069-2021⟩. ⟨hal-03287064⟩
  • Katixa Lajaunie-Salla, Frédéric Diaz, Cathy Wimart-Rousseau, Thibaut Wagener, Dominique Lefèvre, et al.. Implementation and assessment of a carbonate system model (Eco3M-CarbOx v1.1) in a highly dynamic Mediterranean coastal site (Bay of Marseille, France). Geoscientific Model Development, European Geosciences Union, 2021, 14 (1), pp.295-321. ⟨10.5194/gmd-14-295-2021⟩. ⟨hal-03115107⟩
  • Valerie Michotey, Aurelie Blanfuné, Cristele Chevalier, Marc Garel, Frédéric Diaz, et al.. In situ observations and modelling revealed environmental factors favouring occurrence of Vibrio in microbiome of the pelagic Sargassum responsible for strandings. Science of the Total Environment, Elsevier, 2020, 748, pp.141216. ⟨10.1016/j.scitotenv.2020.141216⟩. ⟨hal-02933822⟩
  • Cathy Wimart-Rousseau, Katixa Lajaunie-Salla, Pierre Marrec, Thibaut Wagener, Patrick Raimbault, et al.. Temporal variability of the carbonate system and air-sea CO 2 exchanges in a Mediterranean human-impacted coastal site. Estuarine, Coastal and Shelf Science, Elsevier, 2020, 236, pp.106641. ⟨10.1016/j.ecss.2020.106641⟩. ⟨hal-02495435⟩
  • Frederic Diaz, Daniela Bănaru, Philippe Verley, Yunne-Jai Shin. Implementation of an end-to-end model of the Gulf of Lions ecosystem (NW Mediterranean Sea). II. Investigating the effects of high trophic levels on nutrients and plankton dynamics and associated feedbacks. Ecological Modelling, Elsevier, 2019, 405, pp.51-68. ⟨10.1016/j.ecolmodel.2019.05.004⟩. ⟨hal-02139030⟩
  • Daniela Bănaru, Frederic Diaz, Philippe Verley, Rose Campbell, Jonathan Navarro, et al.. Implementation of an end-to-end model of the Gulf of Lions ecosystem (NW Mediterranean Sea). I. Parameterization, calibration and evaluation. Ecological Modelling, Elsevier, 2019, 401, pp.1-19. ⟨10.1016/j.ecolmodel.2019.03.005⟩. ⟨hal-02087426⟩
  • Béchir Béjaoui, Sana Ben Ismail, Achref Othmani, Olfa Ben Abdallah-Ben Hadj Hamida, Cristele Chevalier, et al.. Synthesis review of the Gulf of Gabes (eastern Mediterranean Sea, Tunisia): Morphological, climatic, physical oceanographic, biogeochemical and fisheries features. Estuarine, Coastal and Shelf Science, Elsevier, 2019, 219, pp.395-408. ⟨10.1016/j.ecss.2019.01.006⟩. ⟨hal-02062093⟩
  • 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-02006275⟩
  • M. Kersalé, Anne Petrenko, A. M. Doglioli, D. Nencioli, J. Bouffard, et al.. Lateral diffusivity coefficients from the dynamics of a SF6 patch in a coastal environment. Journal of Marine Systems, Elsevier, 2016, 153, pp.42-54. ⟨10.1016/j.jmarsys.2015.09.003⟩. ⟨insu-01205846⟩
  • 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⟩
  • C. Ulses, P.-A. Auger, K. Soetaert, Patrick Marsaleix, Frederic Diaz, et al.. Budget of organic carbon in the North-Western Mediterranean open sea over the period 2004-2008 using 3-D coupled physical-biogeochemical modeling. Journal of Geophysical Research. Oceans, Wiley-Blackwell, 2016, 121 (9), pp.7026-7055. ⟨10.1002/2016JC011818⟩. ⟨hal-02110081⟩
  • A Guyennon, M Baklouti, Frederic Diaz, J. Palmiéri, J Beuvier, et al.. New insights into the organic carbon export in the Mediterranean Sea from 3-D modeling. Biogeosciences, European Geosciences Union, 2015, 12 (23), pp.7025-7046. ⟨10.5194/bg-12-7025-2015⟩. ⟨hal-01345570⟩
  • F Carlotti, L. Eisenhauer, R. Campbell, Frederic Diaz. Modeling the spatial and temporal population dynamics of the copepod Centropages typicus in the northwestern Mediterranean Sea during the year 2001 using a 3D ecosystem model. Journal of Marine Systems, Elsevier, 2014, 135, pp.97-116. ⟨hal-02008101⟩
  • 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⟩
  • Marine Herrmann, Frederic Diaz, Claude Estournel, Patrick Marsaleix, Caroline 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 (10), pp.5792-5813. ⟨10.1002/jgrc.20405⟩. ⟨hal-02110102⟩
  • Rose Campbell, Frederic Diaz, Zyiuan Hu, Andrea M. 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⟩
  • P.-A. Auger, Frederic Diaz, C. Ulses, C. Estournel, C. Neveux, et al.. Functioning of the planktonic ecosystem on the Gulf of Lions shelf (NW Mediterranean) during spring and its impact on the carbon deposition : a field data and 3-D modelling combined approach.. Biogeosciences, European Geosciences Union, 2011, 8, pp.3231-3261. ⟨10.5194/bg-8-3231-2011⟩. ⟨hal-00766797⟩
  • Clément Fontana, Christian Grenz, Christel Pinazo, Patrick Marsaleix, Frederic Diaz. Assimilation of SeaWiFS chlorophyll data into a 3D-coupled physical–biogeochemical model applied to a freshwater-influenced coastal zone. Continental Shelf Research, Elsevier, 2009, 29 (11-12), pp.1397-1409. ⟨10.1016/j.csr.2009.03.005⟩. ⟨hal-02110198⟩
  • L. Eisenhauer, F Carlotti, M. Baklouti, Frederic Diaz. Zooplankton population model coupled to a biogeochemical model of the North Western Mediterranean Sea ecosystem. Ecological Modelling, Elsevier, 2009, 220 (21), pp.2865-2876. ⟨10.1016/j.ecolmodel.2009.06.024⟩. ⟨hal-02008177⟩
  • Frederic Diaz, Jean-Jacques Naudin, Claude Courties, Peggy Rimmelin, Louise Oriol. Biogeochemical and ecological functioning of the low-salinity water lenses in the region of the Rhone River freshwater influence, NW Mediterranean Sea. Continental Shelf Research, Elsevier, 2008, 28 (12), pp.1511-1526. ⟨10.1016/j.csr.2007.08.009⟩. ⟨hal-02058753⟩
  • Daniela Cianelli, Frédéric Diaz, Yann Leredde, Patrick Marsaleix, Francois Carlotti. Particle exchange and residence times in the North Western Mediterranean. Il Nuovo cimento della Societa italiana di fisica. C, Springer-Verlag, 2007, 30, pp.138-149. ⟨10.1393/ncc/i2006-10239-y⟩. ⟨hal-00196630⟩
  • 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⟩
  • Yann Leredde, Christine Lauer-Leredde, Frederic Diaz. On the variational data assimilation by a marine ecosystem model of NPZ type. Comptes Rendus Géoscience, Elsevier, 2005, 337 (12), pp.1055-1064. ⟨10.1016/j.crte.2005.05.003⟩. ⟨hal-02061963⟩
  • Xavier Durrieu de Madron, Lionel Denis, Frederic 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⟩
  • Raymond Gaudy, Faïçal Youssara, Frederic Diaz, Patrick Raimbault. Biomass, metabolism and nutrition of zooplankton in the Gulf of Lions (NW Mediterranean). Oceanologica Acta, Elsevier, 2003, 26 (4), pp.357-372. ⟨10.1016/S0399-1784(03)00016-1⟩. ⟨hal-02061968⟩
  • France van Wambeke, Serge Heussner, Frederic 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⟩
  • Frederic Diaz, Patrick Raimbault, B Boudjellal, N. Garcia, T. Moutin. Early spring phosphorus limitation of primary productivity in a NW Mediterranean coastal zone (Gulf of Lions). Marine Ecology Progress Series, Inter Research, 2001, 211, pp.51-62. ⟨10.3354/meps211051⟩. ⟨hal-02061973⟩
  • Frederic Diaz, Patrick Raimbault, Pascal Conan. Small-scale study of primary productivity during spring in a Mediterranean coastal area (Gulf of Lions). Continental Shelf Research, Elsevier, 2000, 20 (9), pp.975-996. ⟨10.1016/S0278-4343(00)00006-6⟩. ⟨hal-02061979⟩
  • Frederic Diaz, Patrick Raimbault. Nitrogen regeneration and dissolved organic nitrogen release during spring in a NW Mediterranean coastal zone (Gulf of Lions):implications for the estimation of new production. Marine Ecology Progress Series, Inter Research, 2000, 197, pp.51-65. ⟨10.3354/meps197051⟩. ⟨hal-02061988⟩
  • 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⟩

Poster communications1 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⟩

Conference papers2 documents

  • Daniela Bӑnaru, Frédéric Diaz, Francois Carlotti, Mireille Harmelin-Vivien, C. F. Boudouresque. Gulf of Lions: the contribution of ecosystem knowledge to the Ecosystem-Based Management of Fisheries. GECOMARS 2020, International Workshop on Ecosystem Based Management, Feb 2020, Marseille, France. ⟨hal-03024588⟩
  • Anne Petrenko, Andrea M. 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⟩

Habilitation à diriger des recherches1 document

  • Frederic Diaz. Impact de la variabilité des processus physiques sur la dynamique biogéochimique du réseau trophique planctonique et sur les bilans d’éléments biogènes dans l’Océan. Application à la mer Méditerranée. Océan, Atmosphère. Aix Marseille Université, 2014. ⟨tel-02050015⟩