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Laboratoire d'Ecogéochimie des Environnements Benthiques
UMR 8222

Katell Guizien


With a fluid mechanics background, I develop research about the influence of hydrodynamics on the functioning and structuration of benthic communities. My first focus goes to the role of connectivity on resilience capacity of benthic invertebrates meta-communities (polychaetes, gorgonians, corals) in the context of global change and protection actions. I therefore develop mechanistic numerical models for meta-populations and meta-communities in which connectivity is quantified using numerical simulations of Lagrangian dispersal including the effect of larval motility derived from experimental studies. My second reaserch line concerns the dynamics of micro-organisms communities living at the water-sediment interface and their associated biogeochemical functions under extreme physical forcing (intertidal mudflat biofilm dynamics, early diagenesis under swell and wind waves events in the nearshore zone). I hence develop numerical models coupling turbulence dynamics in bottom boundary layers and early diagenesis and carry out experiments on organic matter degradation in which turbulence unsteadiness is controlled.

On-going and recently finished research projects:


Agence de l'Eau project ICONE : Impact of articificial reefs additional CONEctivity on hard-bottom natural biodiversity

Interreg Marittimo project IMPACT : Impact of ports on nearby MPAs

Liteau project Roc Connect: Connectivity of hard-bottom substrates in the Gulf of Lions

EC2CO project DynDiagHyd: Organic matter degradation dynamics under unsteady hydrodynamics

Contact Informations

Phone : +33 (04) 68 88 73 19
Mail(s) : katell.guizien@obs-banyuls.fr

Function and attachment

Senior Researcher CNRS (Directrice de recherches 2ème classe, DR2 HDR)


Publications since 2003:


PADRON M., COSTANTINI F., BAKSAY S., BRAMANTI L., GUIZIEN K. (2018) Passive larval transport explains contemporary gene flow in a Mediterranean gorgonian. Coral reefs. https://doi.org/10.1007/s00338-018-1674-1


COSTA A., PETRENKO A.A., GUIZIEN K., DOGLIOLI A.M. (2017) On the Calculation of Betweenness Centrality in Marine Connectivity Studies Using Transfer Probabilities. PlosOne doi: 10.1371/journal.pone.0189021

GUIZIEN K., GHISALBERTI M. (2017) Living in the Canopy of the Animal forest: Physical and Chemical Aspects. Marine Animal Forests. The Ecology of Benthic Biodiversity Hotspots. S. Rossi, L. Bramanti, A. Gori, C. Orejas Saco del Valle (Eds) . Springer. ISBN: 978-3-319-17001-5 (Online).


PADRON M., GUIZIEN K. (2016) Modelling the effect of demographic traits and connectivity on the genetic structuration of marine metapopulations of sedentary benthic invertebrates. ICES Journal of Marine Science 73(7): 1935-1945. doi: 10.1093/icesjms/fsv158

CAU A., BRAMANTI L., AANGIOLILLO M., BO M., CANESE S., CUCCU D., CANNAS R., FOLLESA M.C., GUIZIEN K. (2016) Habitat constraints and self-thinning shape Mediterranean red coral deep population structure: implications for conservation practice. Scientific Reports. 6 : 23322-1-10

GALAND P., LUCAS S., FAGERVOLD S.K., PERU E., PRUSKI A.M., VETION G., DUPUY C., GUIZIEN K. (2016) Disturbance increases microbial community diversity and production in marine sediments. Front. Microbiol. 7:1950. doi: 10.3389/fmicb.2016.01950


MARTINEZ-QUINTANA A., BRAMANTI L., VILLADRICH N., ROSSI S., Guizien K. (2015) Larval motility behaviour of Corallium rubrum (Linneus,): implications for populations connectivity. Marine Biology. 162: 309-318 Doi 10.1007/s00227-014-2599-z

FAURE D., BONIN P., DURAN R. the Microbial Ecology EC2CO consortium (2015) Environmental microbiology as a mosaic of explored ecosystems and issues. Env. Sci. Pollut Res. 22:13577-13598.


GUIZIEN K., BRAMANTI L. (2014) Modelling ecological complexity for marine species conservation: the effect of variable connectivity on species spatial distribution and age-structure. TheoreticaL Biology Forum. 107 (1-2): 47-56

GUIZIEN K., DUPUY C., ORY P., MONTANIE H. HARTMANN H., CHATELAIN M., KARPYTCHEV M. (2014) Benthic/pelagic coupling: in situ microorganism enrichment of the water column over the Brouage mudflat (French Atlantic coast). Journal of Marine Systems, 129: 178-188.

DUPUY C., MALLET C., GUIZIEN K., MONTANIE H., BRERET M., MORNET F., FONTAINE C., NEROT C., ORVAIN F.(2014) Sequential resuspension of biofilm components (viruses, prokaryotes and protists) as measured by erodimetry experiments in the Brouage mudflat (French Atlantic coast). Journal of Sea Research (SI Microbial biofilms) 92: 56-65

MALLET C., AGUOGUE H., BONNEMOY F.,  GUIZIEN K., ORVAIN F., DUPUY C. (2014) Structures of benthic prokaryotic communities and their hydrolytic enzyme activities resuspended from samples of intertidal mudflats: An experimental approach. Journal of Sea Research (SI Microbial biofilms) 92: 158-169

SAINT-BEAT B., Dupuy C., AGOGUE H., CARPENTIER A., Chalumeau J., COMO S., DAVID V., De Crignis M., DUCHENE J.-C., Fontaine C., FEUNTEUN E., Guizien K., HARTMANN H., Lavaud J., Lefebvre S., LEFRANCOIS C., MALLET C., Montanié H., Mouget JL, Orvain F., ORY P., Pascal P.-Y., Quaintenne G., Radenac G., Richard P., Vézina A.F., Niquil N. (2014) How does the resuspension of the biofilm alter the functioning of the benthos-pelagos coupled food web of a bare mudflat in Marennes-Oléron Bay (NE Altlantic)? Journal of Sea Research (SI Microbial biofilms) 92 : 144-157

ORVAIN F., DE CRIGNIS M., GUIZIEN K., LEFEBVRE S., MALLET C., TAKAHASHI E., DUPUY C.  (2014) Tidal and seasonal effects on the short-term temporal patterns of bacteria, microphytobenthos and exopolymers in natural intertidal biofilms (Brouage, France). Journal of Sea Research (SI Microbial biofilms) 92 : 6-18

ORVAIN F., GUIZIEN K., LEFEBVRE S., BRERET M., DUPUY C.  (2014) Relevance of macrozoobenthic grazers to understand the dynamic behavior of sediment erodibility and microphytobenthos resuspension in sunny summer conditions. Journal of Sea Research (SI Microbial biofilms) 92 : 46-55

GUIZIEN K., BELHARET M., GUARINI J.M., MORITZ C. (2014) Marine benthic metapopulations vulnerability: implications of spatially structured connectivity for conservation practice. Diversity and Distributions. 20: 1392-1402 DOI: 10.1111/ddi.12254 


MORITZ C., MEYNARD C.N., DEVICTOR V., GUIZIEN K., LABRUNE C., GUARINI J.-M., MOUQUET N. (2013) Disentangling the role of connectivity, the environment, and spatial structure in a marine metacommunity. Oikos 122(10): 1401-1410.

EL AZZI D., VIERS J., GUIRESSE M., PROBST A., AUBERT D., CAPARROS J., CHARLES F., GUIZIEN K., PROBST J.L.. (2013) Copper fate in a small Mediterranean vineyard catchment: coupling chemical extraction and δ65Cu isotopic signature approaches. Science of the Total Environment. 463–464 : 91-101.

Saint-Béat B. Dupuy C., Bocher P., Chalumeau J., De Crignis M., Fontaine C., Guizien K., Lavaud J., Lefebvre S., Montanié H., Mouget JL, Orvain F., Pascal PY, Quaintenne G., Radenac G., Richard P., Robin F., Vézina A.F., Niquil N. (2013) Key features of intertidal food webs that support migratory shorebirds: The case of the bare mudflat in Marennes-Oléron Bay (NE Atlantic). PLoS ONE 8(10): e76739. doi:10.1371/journal.pone.0076739.


GUIZIEN K., BELHARET M., MARSALEIX P., GUARINI J.M. (2012) Using larval dispersal simulations for Marine Protected Area design: application to the Gulf of Lions (NW Mediterranean). Limnol. and Oceanogr. 57(4), 2012, 1099-1112 | DOI: 10.4319/lo.2012.57.4.1099.


GUIZIEN K., ORVAIN F., DUCHENE J.-C., LE HIR P. (2012) Accounting for rough bed friction factors of mud beds due to biological activity in erosion experiments. J. Hydr. Eng. 138(11), 979-984 (2012); http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000627


Philippart CJ.M., Amaral A. , ASMUS R., van Bleijswijk J., Bremner J., Buchholz F., Cabanellas-Reboredo M., Catarino D., Cattrijsse A., Charles F., ComteT T., CUNHA A., Deudero S., Duchêne J.-C., FRASCHETTI S., Gentil F., GITTENBERGER A., Guizien K. ,  Gonçalves J. M., Guarnieri G., Hendriks I., Hussel B., Pinheiro Vieira R., REIJNEN B.T., Sampaio I. ,  Serrao E., Sousa Pinto I., Thiebaut E., Viard F., ZUUR A.F. (2012) Spatial synchrony in the seasonal occurrence of larvae of oysters (Crassostrea gigas) and mussels (Mytilus edulis/galloprovincialis) in European coastal waters. Est. and Coastal Shelf Sci. 108 :52-63.


X. Durrieu de Madron, C. Guieu, R. Sempéré, P. Conan, D. Cossa, F. D’Ortenzio, C. Estournel, F. Gazeau, C. Rabouille, L. Stemmann, S. Bonnet, F., Diaz, P. Koubbi, O. Radakovitch, M. Babin, M. Baklouti, C. Bancon-Montigny, S. Belviso, N. Bensoussan, B. Bonsang, I. Bouloubassi, C. Brunet, J.-F. Cadiou, F. Carlotti, M. Chami, S. Charmasson, B. Charrière, J. Dachs, D. Doxaran, J.-C. Dutay, F. Elbaz-Poulichet, M. Eléaume, F. Eyrolles, C. Fernandez, S. Fowler, P. Francour, J.C. Gaertner, R. Galzin, S. Gasparini, J.-F. Ghiglione, J.-L., Gonzalez, C. Goyet, L. Guidi, K. Guizien, L.-E. Heimbürger, S.H.M. Jacquet, W.H. Jeffrey, F. Joux, P. Le Hir, K. Leblanc, D. Lefèvre, R. Lemé, M.-D. Loye-Pilot, M. Mallet, L. Méjanelle, F. Melin, C. Mellon, B. Mérigot, P.-L. Merle, C. Migon, W.L. Miller, L. Mortier, B. Mostajir, L. Mousseau, T. Moutin, J. Para, T. Perez, A. Petrenko, J.-C. Poggiale, L. Prieur, M. Pujo-Pay, Pulido-Villena, P. Raimbault, A.P. Rees, C. Ridame, J.-F. Rontani, D. Ruiz Pino, M.A. Sicre, V. Taillandier, C. Tamburini, T. Tanaka, I. Taupier-Letage, M. Tedetti, P., Testor, H. Thébault, B. Thouvenin, F. Touratier, J. Tronczyňski, C. Ulses, F., Van Wambeke, V. Vantrepotte, S. Vaz, R. Verney (2011) Marine ecosystems’ responses to climatic andanthropogenic forcings in the Mediterranean by ’The MERMEX Group’, Progress in Oceanography, doi:10.1016/j.pocean.2011.02.003 (IF2011 : 3.14/ Q1 in Oceanography / 6 citations)


CHATELAIN M., GUIZIEN K. (2010) Modelling coupled turbulence - dissolved oxygen dynamics near sediment-water interface under wind waves and sea swell. Water Res. 44(5): 1361-1372 Doi:10.1016/j.watres.2009.11.010.


GUIZIEN K., CHARLES F., HURTHER D., MICHALLET H. (2010) Spatial redistribution of Ditrupa arietina (soft bottom Mediterranean epifauna) during a moderate swell event: evidence and implications for biotic quality indices. Cont. Shelf Res 30: 239-251.


GUIZIEN K. (2009) Spatial variability of wave conditions in the Gulf of Lions (NW Mediterranean sea). Life and Env. 59(3-4):1-10.


MORITZ C., LOEUILLE N., GUARINI JM, GUIZIEN K. (2009) Quantifying the dynamics of marine invertebrate metacommunities: what processes can maintain high diversity with low densities in the Mediterranean Sea ? Ecol. Model. 220(21):  3021-3032.


VAN DER WERF J.J., MAGAR V., MALARKEY J., GUIZIEN K., O'DONOGHUE T.  (2008) 2DHV modelling of sand transport processes over full-scales ripples in regular oscillatory flow. Cont. Shelf Res. 28: 1040-1056.


LABRUNE C., GREMARE A., GUIZIEN K., AMOUROUX J.-M. (2007) Long-term comparison of soft bottom macrobenthos in the Bay of Banyuls-sur-Mer (Northwestern Mediterranean Sea): A reappraisal. J. Sea Res. 58: 125-143.


GUIZIEN K., CHARLES F., LANTOINE F., NAUDIN J.-J. (2007) Nearshore dynamics of nutrients and chlorophyll during Mediterranean-type flash-floods. Aquatic Liv. Res. 20(1): 3-14.


MOULIN F.Y., GUIZIEN K., THOUZEAU G., CHAPALAIN G., MÜLLENERS K., BOURG C. (2007) Impact of an invasive species Crepidula fornicata on the hydrodynamics and transport properties of the benthic layer. Aquatic Liv. Res. 20(1): 15-31.


GUIZIEN K., BROCHIER T.,  DUCHENE J-C., KOH B-S., MARSALEIX P. (2006)  Dispersal of Owenia fusiformis larvae by wind-driven currents: turbulence, swimming behaviour and mortality in a three-dimensional stochastic model. Mar. Ecol. Prog. Ser. 311: 47-66.


FERRE B., GUIZIEN K., DURRIEU DE MADRON X., PALANQUES A., GUILLEN J., GREMARE A. (2005) Fine-grained sediment dynamics during a strong storm event in the inner-shelf of the Gulf of Lion (NW Mediterranean)  Cont. Shelf Res. 25: 2410-2427.


GUIZIEN K., DOHMEN-JANSSEN M., VITTORI G. (2003) 1DV bottom boundary layer modeling under combined wave and current : turbulent separation and phase lag effects. J. Geophys. Res., 108 (C1), 16 : 1-15.

French and foreign diplomas

2011:  Habilitation à Diriger des Recherches de l'Université Paul Sabatier, Toulouse, France,

Influence of the hydrodynamics on the dynamics of nearshore benthic communities and their geochemical environment

1995 - 1998:  Doctorat de Géophysique de l' Université Joseph Fourier, Grenoble, France.

Long internal waves: generation and interaction with surface wave

1994 - 1995: DEA Mécanique des Milieux Geophysiques et Environnement, Université Joseph Fourier, Grenoble, France.

1992 - 1995 :  Ecole d'Ingénieur, Hydraulique et Mécanique, INP Grenoble, France.

Katell Guizien (katell.guizien @ obs-banyuls.fr) - 04/04/18

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