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Profil de Arnaud ELGER

ELGER Arnaud

Email :

Téléphone / phone: +33 6 86 23 67 08

Bureau / office :

Institution : UPS

Statut / status: Enseignant chercheur

Adresse professionnelle / address:

ENSAT - Avenue de l'Agrobiopole
31326 Castanet-Tolosan cedex

Site perso / personal website :

My present research interest is about the impacts of anthropogenic chemical contaminants on plants and ecosystems.

For that purpose, I use concepts and tools from my initial scientific background in community and functional ecology.

I focus on 3 main topics:

1. Impacts of multiple environmental stressors (incl. chemical contaminants) on aquatic and terrestrial plants
2. Importance and sources of intraspecific variations in freshwater plant response to anthropogenic chemical contaminants
3. Development of new tools to assess landscape and regional-scale chemical contamination and associated environmental risk

  • Since Feb. 2017: Responsible for the scientific project 'Development of a mechanistic model to understand and predict proliferations of aquatic macrophytes on the Garonne river (DEMETHER)' funded by the Adour-Garonne Water Agency.
  • Since Jan. 2017: Responsible for the scientific project 'Intraspecific variations in aquatic macrophyte response to chemical contamination (VIRMA)' funded by the EC2CO program (CNRS-INSU).
  • Since Sept. 2016: Responsible for the 'Ecosystems & Anthropization' major in the Ecology MSc degree at Univ. Paul Sabatier – Toulouse 3 / INPT (responsibility shared with S. Jean, EcoLab).
  • Since Jan. 2011: Member of the EcoLab board.
  • Since Jan. 2009: Member of the Scientific College BEST (Biologie des organismes, Ecologie et Sciences de la Terre) at Univ. Paul Sabatier - Toulouse 3.

Main/Recent publications


  • Roubeau Dumont, E., Larue, C., Castillo Michel, H., Gryta, H., Liné, C., Baqué, D., Gross, E.M. & Elger, A. (2019) Genotypes of the aquatic plant Myriophyllum spicatum with different growth strategies show contrasting sensitivities to copper contamination. Chemosphere (sous presse).
  • Lassalle, G., Elger, A., Credoz, A., Hédacq, R., Bertoni, G., Dubucq, D. & Fabre, S.  (2019) Toward quantifying oil contamination in vegetated areas using very high spatial and spectral resolution imagery. Remote Sensing 11, 2241.
  • Lassalle, G., Fabre, S., Credoz, A., Hédacq, R., Bertoni, G., Dubucq, D. & Elger, A. (2019) Estimating persistent oil contamination in tropical region using vegetation indices and Random Forest regression. Ecotoxicology and Environmental Safety 184, 109654.
  • Durango-Cordero, J., Saqalli, M., Parra, R. & Elger, A. (2019) Spatial inventory of selected atmospheric emissions from oil industry in Ecuadorian Amazon: insights from comparisons among satellite and institutional datasets. Safety Science 120, 107-116.
  • Lassalle, G., Fabre, S. Credoz, A., Hédacq, R., Bertoni, G., Dubucq, D. & Elger, A. (2019) Application of PROSPECT for estimating Total Petroleum Hydrocarbons in contaminated soils from leaf optical properties. Journal of Hazardous Materials 377, 409-417.
  • Espel, D., Diepens, N.J., Boutron, O., Buffan-Dubau, E., Cherain, Y., Coulet, E., Grillas, P., Probst, A., Silvestre, J. & Elger, A. (2019) Dynamics of the seagrass Zostera noltei in a shallow Mediterranean lagoon exposed to chemical contamination and other stressors. Estuarine, Coastal and Shelf Science 222, 1-12.
  • Houssou, N.L.J., Durango Cordero, J., Bouadjio-Boulic, A., Morin, L., Maestripieri, N., Ferrant, S., Belem, M., Peláez, J.I., Saenz, M., Lerigoleur, E., Paegelow, M., Mena, C.F., Elger, A., Gaudou, B., Maurice, L. & Saqalli, M. (2019) Synchronizing exposure and demography: the construction of an agent-based model of the Ecuadorian Amazon colonization and exposure to oil pollution hazards. JASSS - The Journal of Artificial Societies and Social Simulation 22, 1.
  • Roubeau Dumont, E., Larue, C., Pujol, B., Lamaze, T. & Elger, A. (2019) Environmental variations mediate duckweed (Lemna minor L.) sensitivity to copper exposure through phenotypic plasticity. Environmental Science and Pollution Research 26, 14106-14115.
  • Roubeau Dumont, E., Larue, C., Lorber, S., Gryta, H., Billoir, E., Gross, E.M. & Elger, A. (2019) Does intraspecific variability matter in ecological risk assessment? Investigation of genotypic variations in three macrophyte species exposed to copper. Aquatic Toxicology 211, 29-37.
  • Lassalle G., Fabre, S. Credoz, A., Hédacq, R., Borderies, P. Bertoni, G. Erudel, T., Buffan-Dubau, E,. Dubucq, D. & Elger, A. (2019) Detection and discrimination of various oil-contaminated soils using vegetation reflectance. Science of the Total Environment 655, 1113-1124.


  • Durango-Cordero, J., Saqalli, M., Laplanche, C., Locquet, M. & Elger, A. (2018) Spatial analysis of accidental oil spills using heterogeneous data: a case study from the north-eastern Ecuadorian Amazon. Sustainability 10, 4719.
  • Vijayaraj, V., Liné, C., Cadarsi, S., Salvagnac, C., Baqué, D., Elger, A., Barret, M., Mouchet, F. & Larue, C. (2018) Transfer and ecotoxicity of titanium dioxide nanoparticles in the terrestrial and aquatic ecosystems: a microcosm study. Environmental Science and Technology 52, 12757–12764.
  • Lassalle, G., Credoz, A., Hédacq, R. Fabre, S., Dubucq, D. & Elger, A. (2018) Assessing soil contamination due to oil and gas production using vegetation hyperspectral reflectance. Environmental Science and Technology 52, 1756-1764.
  • O'Hare, M.T., Aguiar, F.C., Asaeda, T., Bakker, E.S., Chambers, P.A., Clayton, J., Elger, A., Ferreira, T.M., Gross, E.M., Gunn, I.D.M., Gurnell, A.M., Hellsten, S., Hofstra, D.E., Li, W., Mohr, S., Puijalon, S., Szoszkiewicz, K., Willby, N. & Wood K.A. (2018) Plants in aquatic ecosystems: current trends and future directions. Hydrobiologia 812, 1-11.
  • Larue, C., Baratange, C., Flank, A.M., Khodja, H., Surblé, S., Elger, A. & Carrière, M. (2018) Influence of soil type on TiO2 nanoparticle fate in an agro-ecosystem. Science of The Total Environment 630, 609-617.
  • Hoang, T.K., Probst, A., Orange, D., Gilbert, F., Elger, A., Kallerhoff, J., Laurent, F., Bassil, S., Duong, T.T. & Gerino, M. (2018) Bioturbation effects on bioaccumulation of cadmium in the wetland plant Typha latifolia: A nature-based experiment. Science of The Total Environment 618,1284-1297.
  • Laplanche, C., Elger, A., Santoul, F., Thiede, G.P. & Budy, P. (2018) Modeling the fish community population dynamics and forecasting the eradication success of an exotic fish from an alpine stream. Biological Conservation 223, 34-46.


  • Diepens, N.J., Buffan-Dubau, E., Budzinski, H., Kallerhoff, J. Merlina, G., Silvestre, J., Auby, I. Tapie, N. & Elger, A. (2017) Toxicity effects of an environmental realistic herbicide mixture on the seagrass Zostera noltei. Environmental Pollution 222, 393-403.


  • Cornut, J., Chauvet, E., Mermillod-Blondin, F., Assemat, F. & Elger, A. (2014) Aquatic Hyphomycete Species Are Screened by the Hyporheic Zone of Woodland Streams. Applied and Environmental Microbiology 80, 1949-1960.
  • Clivot, H., Cornut, J., Chauvet, E., Elger, A., Poupin, P., Guérold, F. & Pagnout, C. (2014) Leaf-associated fungal diversity in acidified streams: insights from combining traditional and molecular approaches. Environmental Microbiology 16, 2145-2156.


  • Dos Santos, V.M., Matheson, F.E., Pilditch, C.A. & Elger, A. (2013) Seagrass resilience to waterfowl grazing in a temperate estuary: A multi-site experimental study. Journal of Experimental Marine Biology and Ecology 446, 194-201.
  • Danger, M., Cornut, J., Chauvet, E., Chavez, P., Elger, A. & Lecerf, A. (2013) Benthic algae stimulate leaf litter decomposition in detritus-based headwater streams: a case of aquatic priming effect? Ecology 94, 1604-1613.


  • Dos Santos, V.M., Matheson, F.E., Pilditch, C.A. & Elger, A. (2012) Is black swan grazing a threat to seagrass? Indications from an observational study in New Zealand. Aquatic Botany 100, 41-50.
  • Danger, M., Cornut, J., Elger, A., & Chauvet, E. (2012) Effects of burial on leaf litter quality, microbial conditioning and palatability to three shredder taxa. Freshwater Biology 57, 1017-1030.
  • Cornut, J., Elger, A., Greugny, A., Bonnet, M. & Chauvet, E. (2012) Coarse particulate organic matter in the interstitial zone of three French headwater streams. Annales de Limnologie – International Journal of Limnology 48, 303-313.
  • Cornut, J., Clivot, H., Chauvet, E., Elger, A., Pagnout, C. & Guérold, F. (2012) Effect of acidification on leaf litter decomposition in benthic and hyporheic zones of woodland streams. Water Research 46, 6430-6444.


  • Coutris, C., Merlina, G., Silvestre, J., Pinelli, E. & Elger A. (2011) Can we predict community-wide effects of herbicides from toxicity tests on macrophyte species? Aquatic Toxicology 101, 49-56.


  • Cornut, J., Elger, A., Lambrigot, D., Marmonier P. & Chauvet E. (2010) Early stages of leaf decomposition are mediated by aquatic fungi in the hyporheic zone of woodland streams. Freshwater Biology 55, 2541-2556.


  • Elger, A., Willby, N.J. & Cabello-Martinez, M. (2009). Invertebrate grazing during the regenerative phase affects the ultimate structure of macrophyte communities. Freshwater Biology 54, 1246-1255.
  • Elger, A., Lemoine, D.G., Fenner, M. & Hanley, M.E. (2009). Plan ontogeny and chemical defence : older seedlings are better defended. Oikos 118, 767-773.


  • Elger, A., De Boer, T. & Hanley M.E. (2007) Invertebrate herbivory during the regeneration phase: experiments with a freshwater angiosperm. Journal of Ecology 95, 106-114.


  • Elger, A., Barrat-Segretain, M.H. & Willby, N.J. (2006) Seasonal variability in the palatability of freshwater macrophytes: a case study. Hydrobiologia 570, 89-93.


  • Elger, A. & Lemoine, D. (2005) Determinants of macrophyte palatability to the pond snailLymnaea stagnalis. Freshwater Biology 50, 86-95.
  • Amoros, C., Elger, A., Dufour, S. Grospretre, L., Piegay, H. & Henry, C. (2005) Flood scouring and groundwater supply in rehabilitated side-channels of the Rhône River, France. Archiv für Hydrobiologie Suppl. 155/1-4, 147-167.


  • Elger, A. & Barrat-Segretain, M.H. (2004) Plant palatability can be inferred from a single-date feeding trial. Functional Ecology 18, 483-488.
  • Elger, A., Bornette, G., Barrat-Segretain, M.H. & Amoros, C. (2004) Disturbances as a structuring factor of plant palatability in aquatic communities. Ecology 85, 304-311.
  • Barrat-Segretain, M.H. & Elger, A. (2004) Experiments on growth interactions between two invasive macrophyte species. Journal of Vegetation Science 15, 109-114.


  • Elger, A. & Willby, N.J. (2003) Leaf dry matter content as an integrative expression of plant palatability: the case of freshwater plants. Functional Ecology 17, 58-65.


  • Elger, A., Barrat-Segretain, M.H. & Amoros, C. (2002) Plant palatability and disturbance level in aquatic habitats: an experimental approach using the snail Lymnaea stagnalis (L.). Freshwater Biology 47, 931-940.
  • Elger, A. & Barrat-Segretain, M.H. (2002) Use of the pond snail Lymnaea stagnalis (L.) in laboratory experiments for evaluating macrophyte palatability. Archiv für Hydrobiologie 153, 669-683.
  • Barrat-Segretain, M.H., Elger, A., Sagnes, P. & Puijalon, S. (2002) Comparative life-history traits of two invasive macrophyte species, Elodea canadensis Michaux and Elodea nuttallii (Planchon) H. St John. Aquatic Botany 74, 299-313.

My main teaching activities are in the frame of Ecology MSc degree (1st and 2nd year) and Integrative Biology & Toxicology MSc degree (2nd year) at the Univ. P. sabatier - Toulouse 3. I give lectures, and supervise practical courses and student projects related to ecology, ecotoxicology and biostatistics.

I am responsible for the courses ‘Plant Communities in Southern Europe’ (Ecology MSc degree, 1st year, 6 ECTS), 'Ecosystem Diagnosis and Monitoring' (Ecology MSc degree, 2nd year, 6 ECTS, responsability shared with L. Jacquin, EDB), 'Scientific tools in environmental studies' (Ecology MSc degree, 2nd year, 3 ECTS) and 'Statistics and experimental designs' (Integrative Biology & Toxicology MSc degree, 2nd year, 6 ECTS, responsability shared with F. Remy).

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