Ecologie du phytoplancton / Cycle biogéochimique du silicium

Directrice de recherche


Laboratoire LEMAR




ORCID: 0000-0001-8226-3733

Revues à comité de lecture (rang A)

Maldonado, M., López-Acosta, M., Sitjà, C., García-Puig, M., Galobart, C., Ercilla, G. & Leynaert, A. (2019). Sponge skeletons as an important sink of silicon in the global oceans. Nature Geoscience. (IF: 14.391)

Massichotte et al., 2019. Green Edge ice camp campaigns: understanding the processesntrolling the under-ice Arctic phytoplankton spring bloom. Earth System Data Science.

López-Acosta, M., Leynaert, A., Chauvaud, L., Amice, E., Bihannic, I., Le Bec, T. & Maldonado, M. (2019). In situ determination of Si, N, and P utilization by the demosponge Tethya citrina: a benthic-chamber approach. PLoS ONE, 14(7):e0218787. DOI: 10.1371/journal.pone.0218787. (IF: 2.766)

López-Acosta M., A. Leynaert, V. Coquille, M. Maldonado, 2018. Silicon utilization by sponges: an assessment of seasonal changes. Mar. Ecol. Progr. Ser.,

Gourault M., R. Lavaud, A. leynaert, L. Pecquerie, Y.M. Paulet, S. Pouvreau, 2018. New insights into the reproductive cycle of two Great Scallop populations in Brittany (France) using a DEB modelling approach. Journal of Sea Research.

López-Acosta M., Leynaert A., Grall J., Maldonado M. 2018. Silicon consumption kinetics by marine sponges: an assessment of their role at the ecosystem level. Limnol. Oceanogr. DOI: 10.1002/lno.10956

Leynaert A., Fardel C., Beker B., Soler Ch., Delebecq G., Lemercier A., Pondaven Ph., Durand P.-E., Heggarty K., 2018. Diatom frustules nanostructure in pelagic and benthic environments. Silicon

Siano R., Chapelle A., Antoine V., Michel-Guillou E., Rigaut-Jalabert F., Guillou L., Hegaret H., Leynaert A., Curd A., 2018. Citizen participation in monitoring phytoplankton seawater discolorations. Marine Policy DOI: 10.1016/j.marpol.2018.01.022

Lavaud R., Artigaud S., Le Grand F., Donval A., Soudant Ph., Flye-Sainte-Marie J., Strohmeier T., Strand Ø., Leynaert A., Beker B., Chatterjee A., Jean F., 2018. New insights of the seasonal feeding ecology of Pecten maximus using pigments, fatty acids and sterols analyses. Marine Ecology Progress Series DOI: 10.3354/meps12476

Calleja M., Kerhervé P., Bourgeois S., Kedra M., Leynaert A., Babin M., Devred E., and Morata N., 2017. Effects of increase glacier discharge on phytoplankton bloom dynamics and pelagic geochemistry in a high Arctic fjord. Progress in Oceanography, 159: 195-210.

Lavergne C., Agogué H., Leynaert A., Raimonet M., De Wit R., Pineau Ph., Bréret M., Lachaussée N., Dupuy Ch., 2017. Factors influencing prokaryotes in an intertidal mudflat and the resulting depth gradients. Estuarine, Coastal and Shelf Science. DOI: 10.1016/j.ecss.2017.03.008

Labry C., Delmas, D., Youenou, A., Quere, J., Leynaert, A., Fraisse, S., Raimonet, M. and Ragueneau, O., 2016. High alkaline phosphatase activity in phosphate replete waters: The case of two macrotidal estuaries. Limnol. Oceanogr., 61: 1513–1529. doi:10.1002/lno.10315

López-Acosta, M., Leynaert, A. and Maldonado, M., 2016. Silicon consumption in two shallow-water sponges with contrasting biological features. Limnol. Oceanogr. DOI:10.1002/lno.10359

Lalande C., Moriceau B., Leynaert A., Morata N., 2016. Spatial and temporal variability in export fluxes of biogenic matter in Kongsfjorden. Polar Biology, DOI 10.1007/s00300-016- 1903-4.

Chatterjee, A., C. Klein, A. Naegelen, P. Claquin, A. Masson, M. Legoff, E. Amice, S. L’Helguen, L. Chauvaud, A. Leynaert, 2013. Comparative dynamics of pelagic and benthic micro-algae in a coastal ecosystem, Estuarine, Coastal and Shelf Science vol. 133:67–77. DOI: 10.1016/j.ecss.2013.08.015

Trommer, G., A. Leynaert, C. Klein, A. Naegelen and B. Beker, 2013. Phytoplankton phosphorus limitation in a North Atlantic coastal ecosystem not predicted by nutrient load. Journal of Plankton Research. DOI: 10.1093/plankt/fbt070

Leynaert, A., S. Ní Longphuirt, S. An, J.H. Lim, P. Claquin, J. Grall, B.O.Kwon, C.H. Koh, 2011. Tidal variability in benthic silicic acid fluxes and microphytobenthos uptake in intertidal sediment. Estuarine, Coastal and Shelf Science, Vol. 95: 59-66.

Claquin, P. Ni Longphuirt, S., Fouillaron, P., Huonnic, P., Ragueneau, O., Klein, C., Leynaert, A., 2010. Effects of simulated benthic fluxes on phytoplankton dynamic and photosynthetic parameters in a mesocosm experiment (Bay of Brest, France). Estuarine, Coastal and Shelf Science,

Laruelle, G. G., Regnier P., Ragueneau, O., Kempa, M., Moriceau, B., Ni Longphuirt, S., Leynaert, A., Thouzeau, G. and Chauvaud, L. 2009. Benthic-pelagic coupling and the seasonal silica cycle in the bay of Brest (France): New insights from a coupled physical-biological model. Marine Ecology Progress Series, 385: 15-32.

Ni Longphuirt S., O. Ragueneau, L. Chauvaud, S. Martin, F. Jean, G. Thouzeau, A. Leynaert. 2009. Diurnal heterogeneity in silicic acid fluxes in shallow coastal sites: causes and implications. Estuarine, Coastal and Shelf Science, 82: 495-502.

Ní Longphuirt S., Lim J.-H., Leynaert A., Claquin P., Choy E.-J., Kang Ch.-K., An S. 2009 Dissolved inorganic nitrogen uptake by a natural population of intertidal microphytobenthos: consideration of migration and environmental conditions. Marine Ecology Progress Series, 379: 33-44.

Leynaert A, Ní Longphuirt S., Claquin P., Chauvaud L., Ragueneau O. No limit? : The multiphasic uptake of silicic acid by benthic diatoms. 2009. Limnology and Oceanography 54: 571-576.

Fouillaron P., P. Claquin, S. L’Helguen, P. Huonnic, V. Martin-Jézéquel, A. Masson, S. Ní Longphuirt, P. Pondaven, G. Thouzeau, A. Leynaert. 2007. Response of a phytoplankton community to increased nutrient inputs: A mesocosm experiment in the Bay of Brest (France). Journal of Experimental Marine Biology and Ecology 351:188–198.

Nı´ Longphuirt S., J. Clavier, J. Grall, L. Chauvaud, F. Le Loc’h, I. Le Berre, J. Flye-Sainte-Marie, J. Richard, A. Leynaert. 2007. Primary production and spatial distribution of subtidal microphytobenthos in a temperate coastal system, the Bay of Brest, France. Estuar. Coast. Shelf Sci. (2007), doi:10.1016/j.ecss.2007.04.025.

Monperrus M., E. Tessier, D. Point, K. Vidimova, D. Amouroux, R. Guyoneaud, A. Leynaert, J. Grall, L. Chauvaud, G. Thouzeau, O.F.X. Donard. 2007 The biogeochemistry of mercury at the sediment-water interface in the Thau Lagoon. 2. Evaluation of mercury methylation potential in both surface sediment and the water column. Estuarine, Coastal and Shelf Science 72, 485- 496.

Monperrus, M., E. Tessier, D. Amouroux, A. Leynaert, P. Huonnic, and O. F. X. Donard. 2007. Mercury methylation, demethylation and reduction rates in coastal and marine surface waters of the Mediterranean Sea. Marine Chemistry 107: 49-63.

Point D., M. Monperrus, E. Tessier, D. Amouroux, L. Chauvaud, G. Thouzeau, F. Jean, E. Amice, J. Grall, A. Leynaert, J. Clavier and O.F.X. Donard. 2007. Biological control of trace metal and organometal benthic fluxes in a eutrophic lagoon (Thau Lagoon, Mediterranean Sea, France) Estuarine, Coastal and Shelf Science 72: 457-471.

Thouzeau G., Grall J., Clavier J., Chauvaud L., Jean F., Leynaert A., Ni Longphuirt S., Amice E. and Amouroux D. 2007 Spatial and temporal variability of benthic biogeochemical fluxes associated with macrophytic and macrofaunal distributions in the Thau lagoon (France). Estuarine, Coastal and Shelf Science 72: 432-446.

Ni Longphuirt S., Leynaert, A., Guarini, J.M., Chauvaud, L., Claquin P., Herlory O., Amice E., Huonnic P., Ragueneau O. 2006. Discovery of microphytobenthos migration in the subtidal zone. Marine Ecology Progress Series, vol. 328: 143–154.

Ragueneau, O., Savoye, N., Del Amo, Y., Cotten, J., Tardiveau, B. and Leynaert, A. 2005. A new method for the measurement of biogenic silica in suspended matter of coastal waters: using Si:Al ratios to correct for the mineral interference. Continental Shelf Research, 25: 697−710.

Ragueneau O., Chauvaud L., Moriceau B., Leynaert A., Thouzeau G., Donval A., Le Loch F. and Jean F. 2005. Biodeposition by an invasive suspension feeder impacts the biogeochemical cycle of Si in a coastal ecosystem (Bay of Brest, France), Biogeochemistry, DOI 10.1007/s10533−004−5677−3.

Leblanc K., Leynaert A., Fernandez C.I., Rimmelin P., Moutin T., Raimbault P., Ras J., Quéguiner B. 2005. A seasonal study of diatom dynamics in the North Atlantic during the POMME experiment (2001): evidence for Si limitation of the spring bloom. Journal of Geophysical Research, 110, No. C7, C07S14, doi:10.1029/2004JC002621.

Leynaert, A., E. Bucciarelli, P. Claquin, R. C. Dugdale, V. Martin-Jézéquel, P. Pondaven, and O. Ragueneau. 2004. Effect of iron deficiency on diatom cell size and silicic acid uptake kinetics. Limnol. Oceanogr. 49: 1134-1143.

Amouroux D., M. Monperrus, Point D., Tessier E., Bareille G., Donard O.F.X., Chauvaud L., Thouzeau G., Jean F., Grall J., Leynaert A., Clavier J., Guyonneaud R., Duran R., Goni M.S. and Caumette P., 2003. Transfer of metallic contaminants at the sediment-water interface in a coastal lagoon: Role of the biological and microbial activity. J. Phys. IV France, vol 107: 41-44.

Le Bouteiller A., Leynaert A., Le Borgne R., Neveux J., Rodier M., Blanchot J., 2003 Primary production, new production, and growth rate in the equatorial Pacific: changes from mesotrophic to oligotrophic regime. Journal of Geophysical Research, 108: 8141.

Rousseau V., Leynaert A., Daoud N., and Lancelot C., 2002. Diatom succession, silicification and silicic acid availability in Belgian coastal waters (Southern North Sea). Marine Ecology Progress Series 236: 61-73.

Ragueneau O., Chauvaud L., Leynaert A., Thouzeau G., Paulet Y.-M., Bonnet S., Lorrain A., Grall J., Corvaisier R., Le Hir M., Jean F. and Clavier J., 2002. Direct evidence of a biologically active coastal silicate pump: Ecological implications. Limnology and Oceanography, 47 (6): 1849-1854.

Dittert N., Leynaert A., Ragueneau O., 2001. Hunting and gathering silicon data to tackle climate forecasting. Eos, vol 82 (9), p113 and 117.

Leynaert A., P. Tréguer, C. Lancelot, M. Rodier, 2001. Silicon limitation of biogenic silica production in the Equatorial Pacific. Deep Sea Research I, vol. 48, 639-660.

Ragueneau O., Tréguer P., Anderson R.F., Brzezinski M.A., Demaster D.J., Dugdale R.C., Dymond J., Fisher G., François R., Heinze C., Leynaert A., Meier-Reimer E., Martin-Jezequel V., Nelson D.M., Quéguiner B., 2000. Understanding the silicon cycle in the modern ocean: a prerequisite for the use of biogenic opal as a paleoproductivity proxy. Global and Planetary Change, 26: 317-365.

Blain S., Leynaert A., Rodier M., Dinet M.J. and Tréguer P., 1997. Biomass, growth and limitation of equatorial pacific diatoms. Deep Sea Research, 44: 1255-1275.

Ragueneau O., Leynaert A., Tréguer P., Demaster D.J. and Anderson R.F., 1996. Opal studied as a marker of paleoproductivity. Eos, vol. 77(49), p. 491.

Nelson D.M., Tréguer P., Brzezinski M., Leynaert A. and Quéguiner B., 1995. Production and dissolution of biogenic silica in the Ocean: revised global estimates, comparison with regional data and relationship to biogenic sedimentation. Global Biogeochemical Cycles, 9: 359-372.

Tréguer P., Nelson D.M., Van Bennekom A.J., DeMaster D.J., Leynaert A. and Quéguiner B., 1995. The silica balance in the World Ocean. Science, 268: 375-379.

Leynaert A., Nelson D.M., Quéguiner B., Tréguer P., 1993. The silica cycle in the Antarctic Ocean: is the Weddell Sea atypical? Marine Ecology Progress Series, 96: 1-15.

Leynaert A., Tréguer P., Quéguiner B., 1991. The distribution of biogenic silica and the composition of particulate organic matter in the Weddell-Scotia Sea during spring 1988. Marine Chemistry, 35: 435-477.

Tréguer P., Lindner L., Van Bennekom A.J., Leynaert A., Panouse M., Jacques G., 1991. Production of biogenic silica in the Weddell-Scotia Sea measured with 32Si. Limnology and Oceanography, 36(6): 1217-1227

Other publications

Leynaert A., 2018. Les organismes silicifiés et le cycle de la silice. Notices et Travaux. Habilitation à Diriger des Recherches. Université de Bretagne Occidentale (14 Juillet 2018)

Leynaert A., Tréguer P., Nelson D.M. and Del Amo Y., 1996. Why and how measure the biogenic silica production. In: Ragueneau O., Leynaert A. and Tréguer P. (eds.) OPALEO: On the use of opal as a paleo-productivity proxy. Workshop report, Brest, France, pp. 27-31.

Leynaert A., Tréguer P., Nelson D.M. and Del Amo Y., 1996. 32Si as a tracer of biogenic silica production: methodological improvements. In: J. Baeyens, F. dehairs and L. Goeyens (eds.) Integrated marine system analysis. Minutes of the first network meeting, Bruges, Belgique, pp. 29-35.

Ragueneau O., Leynaert A., Tréguer P., 1996. OPALEO: on the use of opal as a paleo-productivity proxy. Minutes of the first workshop, Brest.

– Leynaert A., 1993. La production de silice biogénique dans l’Océan: de la Mer de Weddell à l’Océan Antarctique. Thèse de Doctorat, Université P. et M. Curie, Paris, 160pp.

– Leynaert A., 1989. Distribution et production de silice biogénique en Mer de Weddell-Scotia au printemps 1988. Rapport de DEA, Université P. et M. Curie, Paris.


Chapters in books

Babin M., Leynaert A., J. Sansoulet, 2019.
Beau Livre 80 mondes. 54_INSU_Sous la banquise

De La Rocha, C., Ragueneau O., Leynaert A., 2010. Reconsidering the Meaning of Biogenic Silica Accumulation Rates in the Glacial Southern Ocean. In: The diatoms: applications for environmental and earth sciences. J.P. Smol and E.F. Stoermer (Eds), Cambridge University

Leynaert A., 2010. L’invasion de la crépidule en Rade de Brest : le pire ou le meilleur ? dans « Les invasions biologiques, une question de natures et de sociétés ». R. Barbault, M. Atramentowitcz (editeurs) Editions Quæ p:60-61.

Claquin P., Leynaert A., Sferatorre A., Garnier J., Ragueneau O. Physiological ecology of diatoms along the land−sea continuum. In: Land−Ocean nutrient fluxes: silica cycle. Ittekkot V., Humborg C., Garnier J. (Eds), Scope book, Island press, 2006.

Ragueneau O., Conley D., Ni Longphuirt S., Slomp C. and Leynaert A. A review of the Si biogeochemical cycle in coastal waters. I. Diatoms in coastal food webs and the coastal Si cycle. In: Land−Ocean nutrient fluxes: silica cycle. Ittekkot V., Humborg C., Garnier J. (Eds), Scope book, Island press, 2006.

Ragueneau O., Conley D., Ni Longphuirt S., Slomp C. and Leynaert A. A review of the Si biogeochemical cycle in coastal waters. II. Anthropogenic perturbation of the Si cycle and response of coastal ecosystems. In: Land−Ocean nutrient fluxes: silica cycle. Ittekkot V., Humborg C., Garnier J. (Eds), Scope book, Island press, 2006.