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Barium and molybdenum records in bivalve shells: Geochemical proxies for phytoplankton dynamics in coastal environments?

Julien Thébault , Laurent Chauvaud , Stéphane L'Helguen , Jacques Clavier , Aurélie Barats , et al.
Limnology and Oceanography : methods, 2009, 54 (3), pp.1002-1014. ⟨10.4319/lo.2009.54.3.1002⟩
Journal articles hal-00449364v1

Phytoplankton in the Bay of Seine (France). Influence of the river plume on primary productivity.

C Videau , M Ryckaert , Stéphane L'Helguen
Oceanologica Acta, 1998, 21 (6), pp.907-921. ⟨10.1016/S0399-1784(99)80015-2⟩
Journal articles hal-02315182v1
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Microbial enzymatic assays in environmental water samples: Impact of inner filter effect and substrate concentrations

Marion Urvoy , Claire Labry , Daniel Delmas , Layla Creac'H , Stéphane L'Helguen
Limnology and Oceanography: Methods, 2020, 18, pp.725-738. ⟨10.1002/lom3.10398⟩
Journal articles hal-02989835v1

NITROGEN NUTRITION OF THE PHYTOPLANKTON IN THE WELL-MIXED WATERS OF THE WESTERN ENGLISH-CHANNEL

Stéphane L'Helguen , C Madec , P Lecorre
Oceanologica Acta, 1993, 16 (5-6), pp.653-660
Journal articles hal-02315188v1
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Size-dependent uptake of nitrate and ammonium as a function of light in well-mixed temperate coastal waters

Jean-François Maguer , Stéphane L'Helguen , Julien Caradec , Cécile Klein
Continental Shelf Research, 2011, 31 (15), pp.1620-1631. ⟨10.1016/j.csr.2011.07.005⟩
Journal articles hal-00636263v1
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Quorum Sensing Regulates the Hydrolytic Enzyme Production and Community Composition of Heterotrophic Bacteria in Coastal Waters

Marion Urvoy , Raphaël Lami , Catherine Dreanno , Daniel Delmas , Stéphane L'Helguen , et al.
Frontiers in Microbiology, 2021, 12, pp.780759. ⟨10.3389/fmicb.2021.780759⟩
Journal articles hal-03510738v1

Correction: Response of the Unicellular Diazotrophic Cyanobacterium Crocosphaera watsonii to Iron Limitation (vol 9, e86749, 2014)

Violaine Jacq , Céline Ridame , Stéphane L'Helguen , Fanny Kaczmar , Alain Saliot
PLoS ONE, 2014, 9 (4), pp.e86749. ⟨10.1371/journal.pone.0092655⟩
Journal articles hal-02315169v1

On the presence of a cadmium-rich subsurface water mass in the western Mediterranean and its influence on the distribution of cadmium in the surface waters

Ricardo D. Riso , P Le Corre , Stéphane L'Helguen , P Morin
Marine Chemistry, 2004, 87 (1-2), pp.15-22. ⟨10.1016/S0304-4203(03)00115-4⟩
Journal articles istex hal-02315175v1

Nitrogen dynamics in coastal systems: coastal system with strong vertical mixing

Stéphane L'Helguen , Jean-François Maguer , C Madec , P Le Corre
BIOGEOCHIMIE MARINE, Dec 2002, 195 RUE SAINT-JACQUES, 75005 PARIS, France. pp.661-686
Conference papers hal-02315177v1

Seasonal patterns of ammonium regeneration from size-fractionated microheterotrophs

Jean-François Maguer , Stéphane L'Helguen , C Madec , P Le Corre
Continental Shelf Research, 1999, 19 (14), pp.1755-1770. ⟨10.1016/S0278-4343(99)00037-0⟩
Journal articles istex hal-02315180v1

RECOVERY OF UREA NITROGEN FROM SEAWATER FOR MEASUREMENT OF N-15 ABUNDANCE IN UREA REGENERATION STUDIES USING THE ISOTOPE-DILUTION APPROACH

G Slawyk , P Raimbault , Stéphane L'Helguen
Marine Chemistry, 1990, 30 (4), pp.343-362. ⟨10.1016/0304-4203(90)90080-V⟩
Journal articles istex hal-02315190v1

Quantitative determination of particulate organic N and C in marine phytoplankton samples using mass spectrometer signals from isotope ratio analyses in N-15 tracer and C-13 tracer studies

G Slawyk , Stéphane L'Helguen , Y Collos , H Freije
Journal of Experimental Marine Biology and Ecology, 1988, 115 (2), pp.187-195. ⟨10.1016/0022-0981(88)90103-7⟩
Journal articles istex hal-02315191v1
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Strong stimulation of N2 fixation in oligotrophic Mediterranean Sea: results from dust addition in large in situ mesocosms

Céline Ridame , Cécile Guieu , Stéphane L'Helguen
Biogeosciences, 2013, 10, pp.7333-7346. ⟨10.5194/BG-10-7333-2013⟩
Journal articles hal-00952675v1
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Inorganic and organic carbon and nitrogen uptake strategies of picoplankton groups in the northwestern Atlantic Ocean

Hugo Berthelot , Solange Duhamel , Stéphane L'Helguen , Jean‐françois Maguer , Nicolas Cassar
Limnology and Oceanography, 2021, 66 (10), pp.3682-3696. ⟨10.1002/lno.11909⟩
Journal articles hal-03827246v1
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Quorum sensing disruption regulates hydrolytic enzyme and biofilm production in estuarine bacteria

Marion Urvoy , Raphaël Lami , Catherine Dreanno , David Daudé , Alice M S Rodrigues , et al.
Environmental Microbiology, 2021, 23 (11), pp.7183-7200. ⟨10.1111/1462-2920.15775⟩
Journal articles hal-03814177v1
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Potential effects of deep seawater discharge by an Ocean Thermal Energy Conversion plant on the marine microorganisms in oligotrophic waters

Mélanie Giraud , Véronique Garçon , Denis de La Broise , Joël Sudre , Stéphane L'Helguen , et al.
Science of the Total Environment, 2019, 693, pp.133491. ⟨10.1016/j.scitotenv.2019.07.297⟩
Journal articles hal-02337618v1
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NanoSIMS single cell analyses reveal the contrasting nitrogen sources for small phytoplankton

Hugo Berthelot , Solange Duhamel , Stéphane L'Helguen , Jean-François Maguer , Seaver Wang , et al.
ISME Journal, 2019, 13 (3), pp.651-662. ⟨10.1038/s41396-018-0285-8⟩
Journal articles hal-02315056v1

Nitrogen uptake and assimilation kinetics in Alexandrium minutum (Dynophyceae): effect of N-limited growth rate on nitrate and ammonium interactions

Jean-François Maguer , Stéphane L'Helguen , Christian Madec , Claire Labry , Pierre Le Corre
Journal of Phycology, 2007, 43, pp.295-303. ⟨10.1111/j.1529-8817.2007.00334.x⟩
Journal articles istex hal-00633672v1

Inhibition kinetics of nitrate uptake by ammonium in size-fractionated oceanic phytoplankton communities: implications for new production and f-ratio estimates (vol 30, pg 1179, 2008)

Stéphane L'Helguen , Jean-François Maguer , Julien Caradec
Journal of Plankton Research, 2008, 30 (12), pp.1437. ⟨10.1093/plankt/fbn105⟩
Journal articles hal-02315171v1

Ammonium assimilation and regeneration by size-fractionated plankton in permanently well-mixed temperate waters

P Lecorre , M Wafar , Stéphane L'Helguen , Jean-François Maguer
Journal of Plankton Research, 1996, 18 (3), pp.355-370. ⟨10.1093/plankt/18.3.355⟩
Journal articles istex hal-02315184v1
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Carbon and nitrogen content to biovolume relationships for marine protist of the Rhizaria lineage (Radiolaria and Phaeodaria)

Joost Samir Mansour , Andreas Norlin , Natalia Llopis Monferrer , Stéphane L'Helguen , Fabrice Not
Limnology and Oceanography, 2021, ⟨10.1002/lno.11714⟩
Journal articles hal-03190242v1

Net and gross incorporation of nitrogen by marine copepods fed on 15N labelled diatoms: methodology and trophic studies

Dorothée Vincent , G. Slawyk , Stéphane L'Helguen , Géraldine Sarthou , Morgane Gallinari , et al.
Journal of Experimental Marine Biology and Ecology, 2007, 352, pp.295-305
Journal articles hal-00482361v1
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Impact of iron limitation on primary production (dissolved and particulate) and secondary production in cultured Trichodesmium sp.

Emma J. Rochelle-Newall , Céline Ridame , Céline Dimier-Hugueney , Stéphane L'Helguen
Aquatic Microbial Ecology, 2014, 72 (2), pp.143-153. ⟨10.3354/ame01690⟩
Journal articles hal-01023225v1

Saharan dust: a source of bioavailable iron for the marine unicellular diazotrophic cyanobacterium C. watsonii

Violaine Jacq , Céline Ridame , Fanny Kaczmar , Stéphane L'Helguen , Alain Saliot
DUST 2014 ‘International conference on atmopsheric dust’, Jun 2014, Castellaneta Marina, Italy
Conference papers hal-01139716v1
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Role of small Rhizaria and diatoms in the pelagic silica production of the Southern Ocean

Natalia Llopis Monferrer , Aude Leynaert , Paul Tréguer , Andrés Gutiérrez-Rodríguez , Mikel Latasa , et al.
Limnology and Oceanography, 2021, 66 (6), ⟨10.1002/lno.11743⟩
Journal articles hal-03213360v1

Response of a phytoplankton community to increased nutrient inputs: A mesocosm experiment in the Bay of Brest (France)

Pierre Fouillaron , Pascal Claquin , Stéphane L'Helguen , P. Huonnic , V. Martin-Jézéquel , et al.
Journal of Experimental Marine Biology and Ecology, 2007, 351 (1-2), pp.188-198. ⟨10.1016/j.jembe.2007.06.009⟩
Journal articles istex hal-00472047v1

Seasonal patterns of urea regeneration by size-fractionated microheterotrophs in well-mixed temperate coastal waters

Stéphane L'Helguen , G Slawyk , P Le Corre
Journal of Plankton Research, 2005, 27 (3), pp.263-270. ⟨10.1093/plankt/fbh174⟩
Journal articles hal-02315172v1

New and regenerated production in the Almeria-Oran front area, eastern Alboran Sea

Stéphane L'Helguen , P Le Corre , C Madec , P Morin
Deep Sea Research Part I: Oceanographic Research Papers, 2002, 49 (1), pp.83-99. ⟨10.1016/S0967-0637(01)00044-9⟩
Journal articles istex hal-02315178v1

Uptake and regeneration of nitrogen in the well-mixed waters of the English Channel: new and regenerated productions.

Jean-François Maguer , Stéphane L'Helguen , C Madec , P Le Corre
Oceanologica Acta, 1998, 21 (6), pp.861-870. ⟨10.1016/S0399-1784(99)80012-7⟩
Journal articles hal-02315181v1

Nitrogen uptake in permanently well-mixed temperate coastal waters

Stéphane L'Helguen , C Madec , P Lecorre
Estuarine, Coastal and Shelf Science, 1996, 42 (6), pp.803-818. ⟨10.1006/ecss.1996.0051⟩
Journal articles istex hal-02315183v1