ECOLAB > Pages profils > BOULÊTREAU Stéphanie

Profil de Stéphanie BOULÊTREAU


Email :

Téléphone / phone: 05 61 55 73 48

Bureau / office : 336

Institution : UPS

Statut / status: ITA

Adresse professionnelle / address:

Laboratoire Ecologie fonctionnelle & Environnement EcoLab
UMR 5245 - University Paul Sabatier/CNRS/INPT
118 route de Narbonne
31062 Toulouse cedex 9, France

Site perso / personal website :

Professional experience

  • from september 2014 : Research engineer, University of Toulouse
  • 2009-2014: Research engineer, CNRS
  • 2007-2008: Postdoctoral researcher, CNRS
  • 2006-2007: Teaching assistant, University of Toulouse
  • 2007: 1-month voluntary training course, University of The Basque Country, Bilbao, Spain
Scientific supervisor: A Elosegi, Department of Plant Biology and Ecology
  • 2003: 2-months voluntary training course, Ghent University, Belgium
Scientific supervisor: K Muylaert, Protistology and Aquatic Ecology Research group


  • 2004-2007: PhD in Hydrobiology, University of Toulouse
Determinism of the accretion and detachment functions of phototrophic biofilm in natural systems: experimental and numerical studies of the factors that control biomass in rivers. Supervisors: Dr Sabine Sauvage and Dr José-Miguel Sanchez-Pérez
  • 2003-2004: Master of Science in Ecology in Continental Ecosystems, University of Toulouse
  • 2000-2003: Engineering Master’s degree in Water and Environmental Sciences, ENGEES, Strasbourg
  • 1997-2000: University-level preparation for the nation-wide competitive entrance exams to the French « Grandes Ecoles » Option « Biology, Chemistry, Physics and Earth Science ».
  • 1997: « Baccalauréat » (A-levels) in Sciences. Option « Physics and Chemistry ». With honors. 

The extent of the impact of human activities on Earth requires to consider humankind as an environmental major force. My research interests deal with the effects of two human-induced changes, warming and biological invasions, on the relationships between the food-web structure and the functioning of ecosystem in freshwaters. I aim at understanding how water warming drives microbial diversity and structuring and how microbial diversity and community dynamics affects microbial processes. How warming affects species trophic interactions, how species structure influences trophic interactions and ecosystem functioning and, how non-native species modify trophic interactions ?

I am working on diverse biota, from bacterial communities to fish from field survey, laboratory experiments and deterministic modeling.

Key-words: warming effect, biological invasions, stable isotope analysis, trophic interactions, microbial community structure,  denitrification activity, metabolism, phototrophic river biofilms

Project management

Students’ supervision:

  • Camille Musseau, PhD, 2013-2015, University of Toulouse. Co-supervision with F Santoul.
  • Rémy Lassus, Master of Science EBEN (University of Toulouse), 2013. Co-supervision with A Lecerf. Trophic response of gammarids to hydric stress and temperature increase (mesocosm study).
  • Alban Sagouis, Master of Science MSE (University of Toulouse), 2013. Co-supervision with J Cucherousset (EDB, Toulouse). The effects of non-native fish species on freshwater trophic diversity patterns.

Reviewing activity:

Aquatic Microbial Ecology, Ecological Modelling, Ecological Indicators, Journal of Hydrology, PloS ONE

Main/Recent publications

- Boulêtreau S, Verdeyroux P, Lorthiois E, Azémar F, Compin A, Santoul F (2016) Do you eat or not? Predation behaviour of European catfish (Silurus glanis) toward live bait on a hook. The Open Fish Science Journal 9: 19-25

- Pool TK, Cucherousset J, Boulêtreau S, Villéger S, Strecker AL, Grenouillet G (2016) Increased taxonomic and functional similarity does not increase the trophic similarity of communities. Global Ecology and Biogeography 25: 46-54

- Musseau C, Vincenzi S, Jesensek D, Cantera I, Boulêtreau S, Santoul F, Crivelli AJ (2015) Direct and indirect effects of environmental factors on dietary niches in size-structured populations of a wild salmonid. Ecosphere 6(12):256.

- Guillerault N, Delmotte S, Boulêtreau S, Lauezral C, Poulet N, Santoul F (2015) Does the non-native European catfish Silurus glanis threaten French river fish populations? Freshwater Biology 60: 922-928

- Sagouis A, Cucherousset J, Villéger S, Santoul F, Boulêtreau S (2015) Non-native species modify the isotopic structure of freshwater fish communities across the globe. Ecography 38: 1-7

- Musseau C, Boulenger C, Crivelli Alain J, Lebel I, Pascal M, Boulêtreau S, Santoul F (2014) Native European eels as a potential biological control for invasive crayfish. Freshwater Biology 60: 636-645

- Boulêtreau S, Lyautey E, Dubois S, Compin A, Delattre C, Touron-Bodilis A, Mastrorillo S, Garabetian F. 2014. Warming-induced changes in denitrifier community structure modulate the ability of phototrophic river biofilms to denitrify. Science of the Total Environment 466-467: 856-863

- Chaibi R, Si Bachir A, Chenchouni H, Boulêtreau S, Céréghino R, Santoul F. 2012. Effect of large-scale environmental variables and human pressure on distribution patterns of exotic contrinental fish in east Algeria. Zoology and Ecology 0: 1-6

- Cucherousset J, Boulêtreau S, Azémar F, Compin A, Guillaume M, Santoul F. 2012. “Freshwater Killer Whales”: beaching behavior of an alien fish to hunt land birds. PloS ONE 7(12): e50840

- Boulêtreau S, Salvo E, Lyautey E, Mastrorillo S and Garabetian F. 2012. Temperature dependence of denitrification in phototrophic river biofilms. Science of the Total Environment 416: 323-328

- Majdi N, Mialet B, Boyer S, Tackx M, Leflaive J, Boulêtreau S, Ten-Hage L, Julien F, Fernandez R and Buffan-Dubau E. 2012. Relationship between an epilithic biofilm and its associated meiofauna under two patterns of flood disturbance. Freshwater Science (ex Journal of the North American Benthological Society) 31(1): 38-50

- Cucherousset J, Boulêtreau S, Martino A, Roussel J-M and Santoul F. 2012. Using stable isotope to determine the ecological effects of non-native fishes. Fisheries and Management Ecology 19: 111-119

- Boulêtreau S, Cucherousset J, Villeger S, Masson R and Santoul F. 2011. Colossal aggregations of giant alien freshwater fish as a potential biogeochemical hotspot. PLoS ONE 6(10): e25732  

- Lyautey E, Cournet A, Morin S, Boulêtreau S, Etcheverry L, Charcosset JY, Delmas F, Bergel A and Garabetian F. 2011. Electroactivity of phototrophic river biofilms and constitutive cultivable bacteria. Applied Environmental Microbiology 77: 5394-5401

- Boulêtreau S, Charcosset J-Y, Gamby J, Lyautey E, Mastrorillo S, Azémar F, Moulin F, Tribollet B and Garabetian F. 2011. Rotating disk electrodes to monitor river biofilm thickness and elasticity. Water Research 45: 1347-1357

- Graba M, Moulin FY, Boulêtreau S, Garabetian F, Kettab A, Eiff O, Sánchez-Pérez J-M and Sauvage S. 2010. Dynamics of epilithic biofilm biomass in artificial rough, open-channel flow: experimental and modelling approaches. Water Resources Research 46: W11531

- Boulêtreau S, Sellali M, Elosegi A, Nicaise Y, Bercovitz Y, Moulin F, Eiff O, Sauvage S, Sánchez-Pérez J-M and Garabetian F. 2010. Temporal dynamics of river biofilm in constant flows: a case study in a riverside laboratory flume. International Review of Hydrobiology 95(2): 156-170

- Lyautey E, Boulêtreau S, Madigou EY and Garabetian F. 2010. Viability of differentiated epilithic bacterial communities in the River Garonne (SW France). Hydrobiologia 637: 207-218            

- Leflaive J, Boulêtreau S, Buffan-Dubau E and Ten-Hage L. 2008. Temporal patterns in epilithic biofilm – relation with a putative allelopathic activity. Fundamental and Applied Limnology 173(2): 121-134      

- Boulêtreau S, Izagirre O, Garabetian F, Sauvage S, Elosegi A and Sánchez-Pérez J-M. 2008. Identification of a minimum adequate model to describe the biomass dynamics of river epilithon. River Research and Applications 24: 36-53

- Azémar F, Boulêtreau S, Lionard M, Muylaert K, Vyverman W, Meire P and Tackx M. 2006. Looking for general trends in trophic interaction among estuarine micro- and mesozooplankton. Journal of Plankton Research 29: 135-147

- Boulêtreau S, Garabetian F, Sauvage S and Sánchez-Pérez J-M. 2006. Assessing the importance of a self-generated detachment process in river biofilm models. Freshwater Biology 51: 901-912

- Lionard M, Azémar F, Boulêtreau S, Muylaert K, Tackx M and Vyverman W. 2005. Grazing by meso- and microzooplankton on phytoplankton in the upper reaches of the Schelde estuary (Belgium/Netherlands). Estuarine coastal and shelf science 64: 764-774 

- Tackx M, Azémar F, Boulêtreau S, De Pauw N, Bakker K, Sautour B, Gasparini S, Soetaert K, Van Damme S and Meire P. 2005. Zooplankton in the Shelde estuary, Belgium and the Netherlands: long-term trends in spring populations. Hydrobiologia 540: 275-278 

  • Hot Plate: Development of an heating artificial substrate to investigate warming effect on river biofilms.

Project leader : S Boulêtreau. Project partners: Arthur Compin (EcoLab, Toulouse), Jean-Louis Druilhe (EcoLab, Toulouse), Frédéric Moulin (IMFT, Toulouse)

  • AquaThermie: Warming effects on aquatic communities (2012-2016)
Project leader: S Boulêtreau, F Santoul and F Garabetian (EPOC, University of Bordeaux). Project partners: S Morin (IRSTEA Bordeaux), C Delattre (LNHE, EDF R&D), A Touron-Bodilis (LNHE, EDF R&D), N Poulet (ONEMA), E Lyautey (UMR CARRTEL, University of Savoie), Anna Romani (University of Girona). Funding: EDF R&D, ONEMA
  • ExoLac: Effects of the presence of non-native fish species on the food-web structure and functioning in lakes (2009-2011)
Project leader: F Santoul. Project partners: N Poulet (ONEMA), Julien Cucherousset (EDB, Toulouse). Funding: ONEMA.
  • GolFilm: Effects of temperature on the microbial communities of phototrophic river biofilms (2008-2010)
Project leaders : S Boulêtreau, Sylvain Mastrorillo and F Garabetian. Project partners: Cécile Delattre (LNHE, EDF R&D), Aurélie Touron-Bodilis  (LNHE, EDF R&D), E Lyautey (UMR CARRTEL, University of Savoie). Funding: EDF R&D.
  • SurF: Evaluation of electrochemical methods to detect river biofilms (2008-2009)
Project leaders: Frédéric Garabetian and François Delmas (IRSTEA Bordeaux). Post doc: S Boulêtreau and Emilie Lyautey. Project partners: Bernard Tribollet (LISE, UPMC Paris), Alain Bergel (LGC, Toulouse), Soizic Morin (IRSTEA Bordeaux). Funding: Action Interréagionale Aquitaine & Midi-Pyrénées.
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