Sébastien Villeger

Informations


bureau / Office : +33 (0)4 67 14 47 32

SITE PERSO :

Institut : CNRS

GRADE : CR2

LIEU GEOGRAPHIQUE : MONTPELLIER




BIOGRAPHIE :

Thématiques de recherche / Research interests

Je suis un écologue des communautés aquatiques, chargé de recherche au CNRS depuis 2012.
Mes principales thématiques de recherche visent à étudier la diversité fonctionnelle des communautés de poissons et la diversité des micro-organismes associés aux macro-organismes.
Plus spécifiquement, je m’intéresse actuellement :

  • aux propriétés des indices de diversité fonctionnelle et de diversité phylogénétique.
  • à la biogéographie fonctionnelle des poissons à l’échelle mondiale avec comme modèles les poissons tropicaux récifaux et les poissons d’eau douce (thèse d’Aurèle Toussaint).
  • à la contribution des poissons au recyclage des nutriments dans les écosystèmes côtiers (Projet EC2CO ReNuPEC en cours) et aux effets de ce recyclage sur les microbes.
  • à la diversité microbienne cutanée des animaux marins (thèse de Marlène Chiarello).
  • à l’automatisation de l’observation des poissons marins (thèse de Silvain Louis).

I’m an ecologist of aquatic communities, researcher at the French CNRS since 2012.
My main research activites aim to study the functional diversity of fish communities and the interactions between micro-organisms and macro-organisms.
More specifically, I’m currently focusing on :

  • the properties of functional and phylogenetic diversity indices.
  • the functional biogeography of fish at the world scale, more precisely tropical reef fish and freshwater fish (PhD of Aurèle Toussaint).
  • the contribution of fish to nutrient recycling in coastal ecosystems (Project ReNuPEC funded by the CNRS) and effects of recycling by fish on microbes.
  • the diversity of microbes living on marine animals (PhD of Marlène Chiarello).
  • the automatisation of the observation of marine fishes (PhD of Silvain Louis).

Pour les étudiants recherchant un stage / For prospective students :

Si vous êtes intéressés par les thématiques de recherche ci-dessus et souhaitez faire un stage à MARBEC, merci de me contacter le plus tôt possible par mail en joignant un CV et une lettre de motivation détaillés (i.e. quelles sont vos connaissances/ compétences et les thématiques que vous voulez découvrir ou approfondir).

If your are interested in the research topics presented above and want to do an interniship at the MARBEC lab, please send me as soon as possible your CV and a cover letter (i.e. detailing your knowledge and skills and what you want to learn with us).

Publications

All my publications are available on my personnal webpage

Mots clés

écologie fonctionnelle, recyclage des nutriments, poissons,
écologie microbienne, interactions entre micro- et macro-organismes, changements globaux, biodiversité


Publications

2017

Villeger, S., Eva Maire, and F. Leprieur. "On the risks of using dendrograms to measure functional diversity and multidimensional spaces to measure phylogenetic diversity: a comment on Sobral et al. (2016)." Ecol. Lett.. 20.4 (2017): 554–557.
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2016

D'agata, S., et al. "Unexpected high vulnerability of functions in wilderness areas: evidence from coral reef fishes." Proc. R. Soc. B. 283.1844 (2016): 20160128.
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Doxa, A., et al. "Mapping biodiversity in three-dimensions challenges marine conservation strategies: The example of coralligenous assemblages in North-Western Mediterranean Sea." Ecological Indicators. 61, Part 2 (2016): 1042–1054.
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Leitão, R. P., et al. "Rare species contribute disproportionately to the functional structure of species assemblages." Proc. R. Soc. B. 283.1828 (2016): 20160084.
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Pool, T. K., et al. "Increased taxonomic and functional similarity does not increase the trophic similarity of communities." Global Ecology and Biogeography. 25.1 (2016): 46–54.
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Toussaint, A., et al. "Worldwide freshwater fish homogenization is driven by a few widespread non-native species." Biol. Invasions. 18.5 (2016): 1295–1304.
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Toussaint, A., et al. "Global functional diversity of freshwater fish is concentrated in the Neotropics while functional vulnerability is widespread." Sci Rep. 6 (2016): 22125.
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Tribot, A. - S., et al. "Taxonomic and functional diversity increase the aesthetic value of coralligenous reefs." Sci Rep. 6 (2016): 34229.
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Villon, S., et al. "Coral Reef Fish Detection and Recognition in Underwater Videos by Supervised Machine Learning: Comparison Between Deep Learning and HOG plus SVM Methods." Eds. J. BlancTalon, et al. Advanced Concepts for Intelligent Vision Systems, Acivs 2016, 10016. Cham: Springer Int Publishing Ag, 2016. 160–171.
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2015

Chiarello, M., et al. "High diversity of skin-associated bacterial communities of marine fishes is promoted by their high variability among body parts, individuals and species." FEMS Microbiology Ecology (2015): fiv061.
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Cucherousset, J., and S. Villeger. "Quantifying the multiple facets of isotopic diversity: New metrics for stable isotope ecology." Ecological Indicators. 56 (2015): 152–160.
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Maire, Eva, et al. "How many dimensions are needed to accurately assess functional diversity? A pragmatic approach for assessing the quality of functional spaces." Global Ecology and Biogeography. 24.6 (2015): 728–740.
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Pham, T. T., et al. "Coral-associated viruses and bacteria in the Ha Long Bay, Vietnam." Aquat Microb Ecol. 76.2 (2015): 149–161.
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Sagouis, A., et al. "Non-native species modify the isotopic structure of freshwater fish communities across the globe." Ecography. 38.10 (2015): 979–985.
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Sirot, C., et al. "Combinations of biological attributes predict temporal dynamics of fish species in response to environmental changes." Ecological Indicators. 48 (2015): 147–156.
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Villeger, S., et al. "From current distinctiveness to future homogenization of the world's freshwater fish faunas." Diversity Distrib.. 21.2 (2015): 223–235.
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2014

Cheng, L., et al. "Temporal changes in the taxonomic and functional diversity of fish communities in shallow Chinese lakes: the effects of river–lake connections and aquaculture." Aquatic Conservation: Marine and Freshwater Ecosystems. 24.1 (2014): 23–34.
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Mouillot, D., et al. "Functional over-redundancy and high functional vulnerability in global fish faunas on tropical reefs." Proceedings of the National Academy of Sciences of the United States of America. 111.38 (2014): 13757–13762.
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Parravicini, V., et al. "Global mismatch between species richness and vulnerability of reef fish assemblages." Ecology Letters. 17.9 (2014): 1101–1110.
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Pool, T. K., G. Grenouillet, and S. Villeger. "Species contribute differently to the taxonomic, functional, and phylogenetic alpha and beta diversity of freshwater fish communities." Diversity and Distributions. 20.11 (2014): 1235–1244.
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Toussaint, A., et al. "Historical assemblage distinctiveness and the introduction of widespread non-native species explain worldwide changes in freshwater fish taxonomic dissimilarity." Global Ecology and Biogeography. 23.5 (2014): 574–584.
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Villeger, S., G. Grenouillet, and S. Brosse. "Functional homogenization exceeds taxonomic homogenization among European fish assemblages." Global Ecology and Biogeography. 23.12 (2014): 1450–1460.
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Zhao, T., et al. "High intraspecific variability in the functional niche of a predator is associated with ontogenetic shift and individual specialization." Ecology and Evolution. 4.24 (2014): 4649–4657.
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2013

Brosse, S., et al. "Fish-SPRICH: a database of freshwater fish species richness throughout the World." Hydrobiologia. 700.1 (2013): 343–349.
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Buisson, L., et al. "Toward a loss of functional diversity in stream fish assemblages under climate change." Glob. Change Biol.. 19.2 (2013): 387–400.
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Mouillot, D., et al. "A functional approach reveals community responses to disturbances." Trends in Ecology & Evolution. 28.3 (2013): 167–177.
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Villeger, S., G. Grenouillet, and S. Brosse. "Decomposing functional β-diversity reveals that low functional β-diversity is driven by low functional turnover in European fish assemblages." Global Ecology and Biogeography. 22.6 (2013): 671–681.
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2012

Villeger, S., et al. "Nutrient recycling by coastal macrofauna : intra- versus interspecific differences." Marine Ecology-Progress Series. 452 (2012): 297–303.
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Villeger, S., et al. "Low Functional beta-Diversity Despite High Taxonomic beta-Diversity among Tropical Estuarine Fish Communities." Plos One. 7.7 (2012).
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2011

Albouy, C., et al. "Predicting trophic guild and diet overlap from functional traits : statistics, opportunities and limitations for marine ecology." Marine Ecology-Progress Series. 436 (2011): 17–28.
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Mouillot, D., et al. "Functional Structure of Biological Communities Predicts Ecosystem Multifunctionality." PLoS One. 6.3 (2011).
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Villeger, S., P. M. Novack-Gottshall, and D. Mouillot. "The multidimensionality of the niche reveals functional diversity changes in benthic marine biotas across geological time." Ecology Letters. 14.6 (2011): 561–568.
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2010

Devictor, V., et al. "Defining and measuring ecological specialization." Journal of Applied Ecology. 47.1 (2010): 15–25.
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Mouchet, M. A., et al. "Functional diversity measures: an overview of their redundancy and their ability to discriminate community assembly rules." Functional Ecology. 24.4 (2010): 867–876.
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Villeger, S., et al. "Contrasting changes in taxonomic vs. functional diversity of tropical fish communities after habitat degradation." Ecological Applications. 20.6 (2010): 1512–1522.
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2008

Mouchet, M., et al. "Towards a consensus for calculating dendrogram-based functional diversity indices." Oikos. 117.5 (2008): 794–800.
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Villeger, S., and D. Mouillot. "Additive partitioning of diversity including species differences: a comment on Hardy & Senterre (2007)." Journal of Ecology. 96.5 (2008): 845–848.
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Villeger, S., N. W. H. Mason, and D. Mouillot. "New multidimensional functional diversity indices for a multifaceted framework in functional ecology." Ecology. 89.8 (2008): 2290–2301.
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Villeger, S., et al. "Stable trophic structure across coastal nekton assemblages despite high species turnover." Marine Ecology-Progress Series. 364 (2008): 135–146.
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MARBEC MARine Biodiversity, Exploitation and Conservation, est une unité de recherche qui regroupe des personnels de 4 organismes : l’IRD, l’Ifremer, l’UM et le CNRS. Son objectif est l’étude de la biodiversité marine des écosystèmes lagunaires, côtiers et hauturiers à différents niveaux d’intégration, depuis les aspects moléculaires, individuels, populationnels et communautaires, et des usages de cette biodiversité par l’Homme. Nous rejoindre