• About ME

    I defended a PhD last november in the laboratory of Ecology of Natural and Man-impacted Hydrosystems at the University of Lyon (France). During the last three years, my research interests have focused on the impact of urbanization and climate changes on biological invasions and interspecific genetic exchanges within the Tetramorium caespitum species complex (Formicidae). This work mobilized landscape ecology and genetics, as well as the study of ecological niche displacement or behavioural responses to habitat alterations. I have used a wide diversity of tools including molecular markers, GIS technology or chemical methods to address issues of interspecific hybridization, biological invasions or biogeographical ranges. The objectives of my research were to assess the relative effects of urbanization and climate factors on gene exchanges and hybridization patterns between ant species of Tetramorium caespitum complex.

    Now in the laboratory of Ecology, Systematic & Evolution of University Paris-Sud (France), I aim to diversify the range of approaches as well as the variety of models to provide an integrative perspective on the responses of biodiversity to global changes.

     

  • Research skills

     

     

    Invasive species - Climate changes - Urbanization

     

    Interspecific hybridization - Landscape genetics - Biogeography

     

    Chemical communication - Behavioural Ecology

     

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    Main Technical Skills

     

    Analytical methods in landscape ecology or genetics

    Bayesian clustering algorithms, least cost path and circuit theory, multivariate spatial analyses, ordination under spatial constraint

     

    Molecular & chemical ecology techniques

    DNA extraction, mitochondrial DNA Sanger sequencing, microsatellite loci genotyping, cuticular lipid extraction, gas chromatography (GC-FID / GC-MS)

     

    Analyses and modelling of dynamic biological systems

    Generalized mixed models, binary data analyses, multivariate approaches, parametric and non-parametric tests, similarity analyses

     

    Wildlife monitoring in natural & laboratory environments

    Ants: Sampling (direct search, baits, pitfalls), behavioral surveys (foraging activities, aggressiveness), common garden (>6 months rearing)

    Birds: Behavioural survey in playback-response experiments

    Large mammals: Behavioural survey of interference competition

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    Data processing / Specialized software

    Biostatistics: R, PAST

    Informatics: MS Office, web, Inkscape

    GIS: ArcGis, QGis

    Genetic: Structure, Circuitscape, Genepop, Genemarker, NewHybrid, Seaview, Network, CodonCode Aligner, Clumpak…

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    Languages

    French: Native language

    English: Fluent written (scientific English), Occasional oral practice

    German: Basic

    Research axes

     

    AXIS 1 - Identification of species and distribution patterns

     

    Urbanization and climate changes drive the biological response of many species which shift their distributions ranges. Based on an individual-based sampling scheme of 1690 samples of Tetramorium ant species along a large-scale climatic gradient and 19 urban gradients in the Rhône valley (France), I applied a two-step approach to identify species combining genetic tools based on nuclear and mitochondrial DNA. I gave a first description of the climatic niche of four Tetramorium species and I investigated how urbanization structured the distribution of these species at four spatial scales.

    AXIS 2 - Global changes and biological invasions

     

    Urbanization is a high magnitude and rapid global change which severely impacts biodiversity, e.g. in promoting the introduction of non-indigenous species and expanding the habitats favourable to their establishment. Urban warming, through Urban Heat Island effects, may enhance biological responses similar to climate warming in rural areas. I test this prediction for Tetramorium immigrans along latitudinal and urbanization gradients in the Rhône valley (France). I used a multidisciplinary comparative approach to investigate the geographic distribution, genetic diversity and structure of this species in the Rhône valley. I am now investigating deeply the impact of urbanization in the propagation of this species based on the measurement of behavioral and physiological impacts of different stresses such as light pollution, extreme temperatures or food fasting, using a comparative approach with a native species.

    AXIS 3 - Interspecific hybridization

     

    Hybridization between species has increased in recent years, often in association with anthropogenic environmental changes, sometimes resulting in the extirpation of one of the parental species or in the replacement of species pairs by hybrid swarms. I investigated the processes involved in establishing a hybridization zone between Tetramorium caespitum and T. immigrans. I combined approaches based on simulations with Bayesian and Maximum-likelihood genetic clustering to highlight the existence of backcrosses between hybrids and parental species, showing fertility of hybrids. I also used paternity analysis techniques to test the existence of pre- or post-mating sexual selection. Finally, I addressed the issue of inter-individual recognition mechanisms, mobilizing both behavioural biology and chemical ecology approaches.

     

    AXIS 4 - Competitive interactions

     

    I firstly studied competitive interactions in large mammals communities (collaboration with Nicolas Ferry) in Sub-Saharan ecosystems. Such researches cencerned competition for access to good quality water and were based on behavioral and chemical approaches. Now, I address these questions in the context of biological invasions. Ants are particularly impacted by biological invasions, and such invasive ants cause significant disruption to native species communities, for example due to competition, predation, diseases, hybridization, or parasitism. Many factors occur during the invasion process and determine the establishment and spread of the species in relation to the biotic and abiotic conditions of the environment in which it is introduced. Among these factors, the ability to acquire resources and the direct competitive interactions with other species play a key role. I investigate these factors to understand how biological invasions select species with certain traits that give them greater abilities to exploit the resources or space in their new habitat. For this, I mainly use behavioral approach centered on the competitive interactions between different ant species of both native and invasive taxa.

  • Education

    Academic curriculum

     

    2019: Qualification for Lecturer position in Biology of Organisms (French CNU section 68)

    2018: PhD in Ecology (University Claude Bernard Lyon 1, France)

    2015: M. Sc Biodiversity, Ecology, Environment (University Joseph Fourier Grenoble, France) (1/8)

    2014: M. Sc Ecosystems bio-evaluation and expertise of biodiversity (University Claude Bernard Lyon 1, France) (1/18)

    2012: B. Sc Biology of Organisms and Populations (University Claude Bernard Lyon 1, France) (4/96)

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    Research Experiences

     

    2019 - ...

    CNRS Research Engineer, Research Lab UMR 8079 - Ecology Systematics and Evolution (ESE), France

    Supervision: F. Courchamp

     

    Biological invasions and competitive interactions within ant species

    • Study of competitive interactions through interference and exploitation in the context of invasive-invasive interactions and between invasive and native species
    • Role of aggression behaviour in direct competitive interactions

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    2015 - 2018, 3 years

    PhD, Research Lab Ecology of Natural and Man-impacted Hydrosystems (LEHNA), France

    Supervision: G. Escarguel & B. Kaufmann

     

    Impacts of global changes on biological invasions and interspecific hybridization within the Tetramorium caespitum ant species complex

    •  Assessment of the relative effects of urbanization and climatic factors in the implementation of gene flows and hybridization patterns
    • Population genetics of an introduced species facing global changes
    • Study of the contribution of recognition and reproductive system on gene flows and hybridization

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    2015, 6 months

    Internship, Research Lab Ecology of Natural and Man-impacts Hydrosystems (LEHNA), France

    Supervision: B. Kaufmann

     

    Evaluation of the impact of urbanization on gene flows: inter- and intra-specific consequences

    • Identification of species, definition of haplotypes and measurement of genetic structuring within species and hybridization between them
    • Analysis of habitats niches at different spatial scales
    • Implementation of innovative analytical methods of landscape genetics

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    2014, 6 months

    Internship, Environmental consultancy, Ecosphère, France

    Supervision: J. Michelot

     

    Scientific evaluation of "Corridors of Life" project [ECONECT European Project of ecological connectivity restoration]

    • Development of a methodology to assess the functionality of ecological corridors (crossing ability, spatial modeling, penetrability models) and the efficiency of wildlife passages
    • Project evaluation: achievement and relevance of actions, conflict resolution
    • Evaluation of the project sustainability: analyses of urban planning documents

     

  • Peer reviewed publications

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    Accepted


    1 - Cordonnier, M., Bellec, A., Dumet, A., Escarguel, G., Kaufmann, B. 2019. Range limits in sympatric cryptic species: a case study in Tetramorium pavement ants (Hymenoptera: Formicidae) across a biogeographical boundary. Insect conservation and diversity, 12(2):109-120. https://doi.org/10.1111/icad.12316

     

    2 - Dutour, M., Cordonnier, M., Léna, J-P., Lengagne, T. 2019. Seasonal variation in mobbing behaviour of passerine birds. Journal of Ornithology. - https://doi.org/10.1007/s10336-019-01630-5

     

    3 - Cordonnier, M., Gayet, T., Escarguel, G., Kaufmann, B. 2019. From hybridization to introgression between two closely related sympatric ant species. Journal of Zoological Systematics and Evolutionary Research - https://doi.org/ 10.1111/jzs.12297

     

    4 - Cordonnier, M., Gibert, C., Bellec, A., Kaufmann, B., Escarguel, G. 2019. Multi-scale impacts of urbanization on species distribution within the genus Tetramorium. Landscape Ecology - https://doi.org/ 10.1007/s10980-019-00842-7

     

    5 - Ferry, N., Cordonnier, M., F.D. Hulot, F. Dakwa, L. Sebele, S. Dray, H. Fritz, M. Valeix. 2019. Heterogeneity of water quality in artificial waterholes: do African herbivores show preferences and does it lead to interference competition? Journal of Arid Environments - https://doi.org/10.1016/j.jaridenv.2019.104014

     

    Submitted

     

    6 - Cordonnier, M., Bellec, A., Escarguel, G., Kaufmann, B. Effect of the urbanization-climate interaction on the expansion of the pavement ant in South-eastern France. Submitted in Basic and Applied Ecology

     

    7- Cordonnier, M., Escarguel, G., Dumet, A., Kaufmann, B. Multiple mating in the context of interspecific hybridization between two Tetramorium ant species. Submitted in Heredity

     

    8- Cordonnier, M., Kaufmann, B, Simon, L., d'Ettorre, P., Escarguel, G., Mondy, N. Discriminating conspecifics from heterospecifics in a hybrid zone: from behavioral to chemical cues. Submitted in Behavioral Ecology

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    Conferences

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    Aug. 2015 - Tours, France - 28th Congress IUSSI French Section - Oral presentation

    Cordonnier, M., Gippet, J., Dumet, A., Bellec, A., Prunier, J., Kaufmann, B. Impacts of urbanization on gene flow: Intra and interspecific consequences
        
    Jul. 2017 - Durham, UK - BES Symposium: the Macroecology of Alien Species - Poster presentation

    Cordonnier, M., Bellec, A., Kaufmann, B., Escarguel, G. From species introduction to biological invasion: untangling two global changes interacting in a urban-rural ant species complex
        
    Aug. 2017 - Paris, France - 29th Congress UIEIS French Section - Poster presentation

    Cordonnier, M., Bellec, A., Escarguel, G., Kaufmann, B. De l'introduction d'espèce à l'invasion biologique : contribution de deux changements globaux en interaction au sein d'un complexe d’espèces du genre Tetramorium (Hymenoptera : Formicidae)
        
    Oct. 2017 - Orléans, France - Conference: Species spread in a warmer and globalized world - Oral presentation

    Cordonnier, M., Bellec, A., Escarguel, G., Kaufmann, B. Biological invasions can be promoted by the interaction between urbanization and climate. A case study of the pavement ant Tetramorium immigrans
        
    May. 2018 - Lyon, France - Rencontre DECRYPThèse -Poster presentation [best poster award]

    Cordonnier, M., Escarguel, G., Kaufmann, B. Comment la fourmi des trottoirs exploite les villes et le réchauffement climatique pour coloniser de nouveaux territoires

     

    Oct. 2018 - Lyon, France - Journée Ecologie Chimique - Oral presentation

    Cordonnier, M., Kaufmann, B., Simon, L., Escarguel, G., Mondy, N. Distinguer un individu conspécifique d’un individu hétérospécifique au sein d’une zone hybride : des preuves comportementales aux signaux chimiques.

     

    Oct. 2018 - Rennes, France - Colloque du Groupement de Recherche CNRS 3647 Invasions Biologiques- Oral presentation

    Cordonnier, M., Gayet, T., Bellec, A., Dumet, A., Escarguel, G., Kaufmann, B. De l’invasion à l’hybridation : conséquences de l’introduction d’une espèce sur les échanges génétiques intra et interspécifiques
        
    Oct. 2018 - Rennes, France - Sfecologie : International Conference On Ecological Sciences - Oral presentation

    Cordonnier, M., Gibert, C., Bellec, A., Kaufmann, B., Escarguel, G. Spatial scaling of urbanization impacts on species distribution within the ant genus Tetramorium

     

    Oct. 2018 - Rennes, France - Cinquièmes journées du GDR Mediatec - Oral presentation

    Cordonnier, M., Kaufmann, B., Simon, L., Escarguel, G., Mondy, N. Distinguer un individu conspécifique d’un individu hétérospécifique au sein d’une zone hybride : des preuves comportementales aux signaux chimiques.

     

    Nov. 2018 - Orsay, France - Invited seminar at Université Paris Sud - ESE - Oral presentation

    Cordonnier, M. Impacts of global changes on biological invasions and interspecific hybridization within the Tetramorium caespitum ant species complex

     

    Nov. 2018 - Grenoble, France - Invited seminar at Université Grenoble Alpes - LECA - Oral presentation

    Cordonnier, M. Impacts des changements globaux sur les invasions biologiques et l'hybridation interspécifique au sein du complexe d'espèces de fourmis Tetramorium caespitum

     

    May 2019 - Paris, France - Invited Seminar at UPMC, iEES Paris - Oral presentation

    Cordonnier, M. Urbanisation, invasions biologiques et hybridation interspécifique - Quelques études chez les fourmis

     

    June 2019 - Gif-sur-Yvette, France - Colloque du Petit Pois Déridé - Oral presentation

    Cordonnier, M., Escarguel, G., Dumet, A., Kaufmann, B. Multiple mating and sexual selection in the context of interspecific hybridization between two ant species

     

    Aug. 2019 - Avignon, France - 30th Congress UIEIS French Section - Oral presentation [best talk award]

    Cordonnier, M., Escarguel, G., Gayet, T., Dumet, A., Kaufmann, B. Rôle des accouplement multiples et de la sélection sexuelle dans les patrons d'hybridation interspécifique au sein du genre Tetramorium, Formicidae

     

  • Teaching and research training

    • Contractual teacher / vacations

    ----------Level-------------------Type ----------------------------Discipline-------------------Duration---------------- Place----------------------Year-----------

    -------Grad.2nd yr. ---------- Lecture ----------------Populations management ----------- 1.5h --------------AgroParisTech -------------- 2019-----------

    -------Grad.1st yr. ----------- Lecture -------------------Population genetics --------------- 1.5h --------------- MNHN Paris --------------- 2019-----------

    -------Grad.1st yr. ----------- Lecture -------------Global changes & biodiversity ---------4.5h -----------Univ. Grenoble Alpes---------- 2018-----------

    -------Grad.1st yr. -------- Practical work --------------Behavioural ecology ---------------18h ---------------Univ. Lyon 1 ----------------- 2018-----------

    ---Undergrad.3rd yr. ---- Practical work ---------Identification of biodiversity ----------12h -------------- Univ. Lyon 1------------------ 2017-----------

    ---Undergrad.2nd yr. -------Tutorial ------------------Sustainable development ----------18h ---------------Univ. Lyon 1------------------ 2016-----------

    ---Undergrad.2nd yr. -------Lecture ---------------- Humans and biodiversity ------------1.5h------------Univ. Paris Saclay -------------- 2019-----------

    ---Undergrad.1st yr. -----Practical work---------------Organism biology -----------------136h ------------- Univ. Lyon 1-------------- 2016-2018-------

    ---Undergrad.1st yr. --------Tutorial---------------------Career guidance ------------------ 12h --------------Univ. Lyon 1-------------------2017-----------

    ---Undergrad.1st yr.-----Practical work --------------Population genetics -----------------3h -------------Univ. Paris Saclay-------------- 2019-----------

     

    Internship supervision

    Apr. 2016: Sébastien Nottellet, Ecological Master’s Degree, University of Rennes 1 (2 months)

    Effects of urbanization on hybridization between two species of the Tetramorium caespitum / impurum complex (Hymenoptera: Formicidae)

     

    Apr. 2016: Hugo Lepape, Ecological Master’s Degree, University of Grenoble (2 months)

    From the introduction of a species to hybridization: what consequences of urbanization? Case study in Tetramorium sp.

     

    Apr. 2016: Elora Benezeth, Ecological Master’s Degree, University of Rennes 1 (2 months)

    Urbanization, a catalyst for biological invasions: Multi-scale comparison in two species of Tetramorium (Formicidae)

     

    Jun. 2016: Sébastien Nottellet, Ecological Master’s Degree, University of Rennes 1 (1 month)

    Molecular tools used to study gene flows between five species of ants

     

    Sep. 2016: Maïlys Dumet, advanced laboratory technician's Degree, Anabiotec Saint-Genis Laval (1 month)

    Study of hybridization between two Formicidae species

     

    Apr. 2017: Emeline Lebecq, Ecological Master’s Degree, University of Lyon 1 (2 months)

    Contributions of behavioral traits of aggressiveness for understanding interspecies hybridization process and biological invasions in two species of Formicidae: Tetramorium sp.E and T. sp.U2

     

    Apr. 2017: Fabio Perruchet, Ecological Master’s Degree, University of Rennes 1 (2 months)

    Contribution of aggressive behavior to understand the phenomena of biological invasion and interspecific hybridization in two species of Formicidae: Tetramorium sp. E and T. sp. U2

     

    Apr. 2017: Emilie Vernay, Meghan Reina, Léa Herpe, Maïlys Dumet, Colombe Richalet, advanced laboratory technician's Degree, Anabiotec Saint-Genis Laval (2 weeks project)

    Optimization of a methodological protocol: genetic approach of ant reproduction

     

    Jun. 2019: Zoé Simon, Bianca Dupont, 3rd-year undergraduate, University of Paris Sud (3 months)

    Biological invasions and competitive interactions within the Formicidae: how to disentangle the interference from the exploitation

     

    July 2019: Eliabelle Mauduit, 1st-year of engineering school at ENSTA ParisTech (2 months)

    Operator internship - Improvement of ants' nests maintenance, experimental devices and ants marking methods

     

    • Management, discovery of scientific research and environmental awareness

    2010 (1 month): Educational activities: Understanding & respecting ecosystems (ecology & trophic networks, general public)

    2011 (2 months): Training related to agriculture (ecological interests of sustainable agriculture, general public)

    2013 (2 weeks): Educational activities: What is biodiversity, and why is it important? (young public, 80 teaching hours)

    2017 (1 week): Supervision of middle school students - discovery of scientific research

    2018 (2 weeks): School intervention: scientific experimentation to determine arthropods' diet (1st - 2nd year elementary students)

    2018 (1 week): Supervision of high school students - discovery of scientific research (assoc. Un Peu de Bon Science)

     

    Administration experience

    Sep. 2015 – July 2016 - Symposium organisation

    Secretary of the organisation committee of the international Ecology and Behaviour meeting 2016 (Lyon, France) gathering 100 participants from 9 countries

     

    Oct. 2015 – Oct 2018 - Doctoral representative

    Representative at the Pedagogical and Orientation Council of the doctoral school E2M2 grouping 12 scientific laboratories (Lyon, France)

     

    Apr. 2018 – May 2018 - Symposium organisation

    Member of the organisation committee of the annual Scientific Day Decrypthèse (Outreach lectures, Lyon, France) gathering 60 participants

     

    Apr. 2019 – Nov 2019 - Symposium organisation
    Co-organizer of the Invacost Workshop (Paris Saclay, France) gathering 50 participants

     

    2020-2023 - Early Carrier Researcher representative

    Selected and registered in the database of potential committee members participating in the evaluations of doctoral schools and doctoral colleges

  • Contact me