Dernières publications

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Correction: Gasperi et al. Micropollutants in Urban Runoff from Traffic Areas: Target and Non-Target Screening on Four Contrasted Sites. Water 2022, 14, 394
Johnny Gasperi, Julien Le Roux, Steven Deshayes, Sophie Ayrault, Louise Bordier, Lila Boudahmane, Hélène Budzinski, Emilie Caupos, Nadège Caubrière, Kelsey Flanagan, Martin Guillon, Nina Huynh, Pierre Labadie, Laurent Meffray, Pascale Neveu, Chandirane Partibane, Julien Paupardin, Mohamed Saad, Lucie Varnede, Marie-Christine Gromaire
, MDPI, 2022, 14 (14), pp.2215. ⟨10.3390/w14142215⟩
Determinants of Evapotranspiration in Urban Rain Gardens: A Case Study with Lysimeters under Temperate Climate
Ahmeda Assann Ouédraogo, Emmanuel Berthier, Brigitte Durand, Marie-Christine Gromaire
, MDPI, 2022, 9 (3), pp.42. ⟨10.3390/hydrology9030042⟩
Choisir de lutter contre certaines pollutions plutôt que d’autres - Mise en visibilité et ignorance des facteurs de dégradation du Lac de Guiers
Youssoupha Tall, José -Frédéric Deroubaix, Ibrahima Dia, Veronica Mitroi, Tidiane Ndoye, Sylvain Faye, Jean-François Humbert
, Société d'Anthropologie des Connaissances, 2021, 15 (4)
High-Resolution Mass Spectrometry Screening of Wastewater Effluent for Micropollutants and Their Transformation Products during Disinfection with Performic Acid
Maolida Nihemaiti, Nina Huynh, Romain Mailler, Perrine Mèche-Ananit, Vincent Rocher, Rachid Barhdadi, R. Moilleron, Julien Le Roux
, American Chemical Society, 2022, ⟨10.1021/acsestwater.2c00075⟩
Importance of Local and Regional Scales in Shaping Mycobacterial Abundance in Freshwater Lakes
Adélaïde Roguet, Claire Therial, Arnaud Catherine, Adèle Bressy, Gilles Varrault, Lila Bouhdamane, Viet Tran Khac, Bruno J. Lemaire, B. Vinçon-Leite, Mohamed Saad, Laurent Moulin, Françoise S. Lucas
, Springer Verlag, 2018, 75 (4), pp.834-846. ⟨10.1007/s00248-017-1088-6⟩


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Internship offer for summer 2020 (master’s degree) : Measurement of nutrient fluxes at the water-sediment interface of an urban lake employing different techniques => STAGE POURVU / INTERNSHIP OFFER PROVIDED

par Administrateur, Daniel Thevenot - publié le

Internship offer for Master’s student (1st year) in 2020 at Leesu : Measurement of nutrient fluxes at the water-sediment interface of an urban lake employing different techniques

Scientific background

Climate change increases the risks of eutrophication and pollution of resources. Higher temperatures promote both algae growth and oxygen depletion in shallow water bodies such as lakes and rivers. These factors are constantly affecting the use of water and the ecosystem health in many ways : interruption of drinking water production, health risks related to agricultural and livestock production, prohibition of fishing and recreational activities. In addition, the waterbody anoxia can result in the release of pollutants, such as carbon, ethane and nitrous oxide from the sediment.

The main physical, biological and chemical mechanisms related to nutrient and micropollutants cycles in aquatic ecosystems are known, but their empirical quantification in an ecosystem remains unclear or insufficient. As a result, the trigger and the drivers of rapid processes, such as algae bloom, cannot be predicted or quantified.

The dynamics at the water-sediment interface is governed by a wide range of processes, including the turbulent transport. The contribution of turbulence to benthic fluxes is poorly understood, due to a lack of instruments that would combine the following criteria : being non-invasive, presenting high temporal resolution and encompassing a wide range of possible substances for analysis.

Internship objective

Within the AquaREA project, a partnership between École des Ponts ParisTech (France), AgroParisTech (France) and the University of Landau (Germany), we are developing a sampling system for turbulent benthic fluxes based on the micrometeorological technique known as Relaxed Eddy Accumulation.

The objective of the internship is to compare different techniques for benthic flux estimation simultaneously with the developed technique. This approach will provide an empirical estimation of the effect of turbulence on the measured fluxes. The intern will employ two techniques, the benthic chamber and the diffusive equilibration in thin films, both well established. The measurements will take place at Lake Champs-sur-Marne (Marne-la-Vallée), close to Ecole des Ponts ParisTech premises, under the supervision of a PhD student.

Student profile required

  • M1 or summer internship
  • Scientific and mathematical background, statistics and basic programming and coding for data analysis
  • A particular enthusiasm for field and experimental work
  • Driver’s license valid in France

Practical information

The expected duration of the internship is of three months.

The location of the internship is at the research group Water, Environment and Urban Systems (LEESU in French) at Ecole des Ponts ParisTech, 6-8 avenue Blaise Pascal, F-77420 Champs-sur-Marne, France.

The intern will be granted 554.40 € a month (the computation is based on the exact number of working days). Half the monthly travel ticket of the regional public transport network will be refunded upon request. The intern will be admitted to the cafeteria for meals and will benefit from the Ecole des Ponts ParisTech electronic resources, including the digital library.


The internship will be supervised by Bruno Lemaire, lecturer in hydrology at AgroParisTech, and Guilherme Calabro, PhD student at Ecole des Ponts ParisTech.


If you are interested, please send your CV and application letter before the February 20th to : Bruno Lemaire (bruno.lemaire[at] and Guilherme Calabro (guilherme.calabro-souza[at]