Behavioural Ecology


CEFE- RDC, Aile B, bureau 3


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My research is framed around a comparative exploration of the role of multiple environmental drivers in shaping species distributions and diversity at multiple spatial and temporal scales. Most of my research is structured on the combined use of ecoinformatics methods (statistical analysis of large data sets) and naturalist expertise to understand empirical patterns of community composition in space and time. My main active axes of research include :  

- functional biogeography of seabirds in the Southern ocean. I try to explain and predict the composition of seabird assemblages with spatial models calibrated with environmental factors, trophic interactions and species traits. The project relies on a large-scale bird counts protocol from ships and statistical model of multiple data types. See the C-BIRDS project and thesis (offer valid until 07/2024).

-  understanding spatial patterns of vertebrates distributions and assemblage compositions. Relying on various opportunistic or protocoled data sources at multiple spatial scales, I investigate the determinants of spatial patterns in vertebrate distributions and assemblage composition through spatial models based on proxies of historical and contemporary processes. See for instance he MALPOLON database.

- Ecoacoustics and community ecology. Several active projects focus on the relationship between bird community composition and the characteristics of soundscapes at multiple spatial and temporal scales, in order to explore the acoustic environment in which species interact and its changes with current land-use and climatic dynamics. See the ACOUCENE project (2022 - 2025, FRB/CESAB)


Most of my interactions with biodiversity stakeholders are focused on data analysis to answer questions relative to the monitoring of human impacts on biodiversity at a regional or landscape scale.

- Ecological data analysis. I am involved in initiatives to foster interactions between scientific and non scientific stakeholders with respect to data-based ecological monitoring and expertise. See the website of the CISSTAT network. 

- Analysis of land use influences on common bird assemblages in southern France. I investigate the impact of land use and habitats on the temporal dynamics of local bird assemblages with opportunistic and protocoled data (collaborations with the Ligue pour la Protection des Oiseaux - PACA). 

- Faunistic road casualties. I work with the Ligue pour la Protection des Oiseaux and the CEREMA to explain and predict spatial patterns in road casualites. We exploit jointly multiple sources of protocoled, non-protocoled and citizen science data to identify mortality hotspots and explanatory factors, with the final aim to inform public policies on the mitigation of traffic impact on vertebrates. See the final report of the COCPITT project (2020-2023).

 - Interacting imprints of climate change and land use on biodiversity. Using multiple taxa and scales, I investigate how species' responses to historical and present land use change interact with their responses to climate change. See the LANDBIO project (2022 - 2023, OFB - french ministry of ecology)



Most of my teaching activity is embedded within the program of the Ecole Pratique des Hautes Etudes.

- Data analysis for ecologist : a three-weeks course dedicated to biodiversity stakeholders, framed on the practical use of statistical methods and the R software in ecological monitoring. 

- Environmental law and policy : I drive a one-week course to introduce environmental public policies to scientific ecologists, involving speakers from various authorities and decision levels and practical training to improve students' written and verbal interactions with non-scientific stakeholders.

- Methods for ecological monitoring : a two-weeks course with Aurélien Besnard, mainly dedicated to master students and biodiversity stakeholders, to improve their skills and critical thinking in advanced numerical methods for ecology, including species distribution modeling, population dynamics, sampling design and analysis of diversity indices.

- Environmental changes and ecological science : I contribute to several courses on global changes and environmental monitoring. My teaching is focused on the interactions between science and society through several lenses including epistemology and governance / spatial planning.



34. Barnagaud, J.-Y., Flores, O., Balent, G., Tassin, J. & Barbaro, L. (2023) Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island. Ecology and Evolution, 13, e10322.

33. Rault, C., Leprieur,F., Barbaro,L., Kreft,H., Mouquet,N., Papaïx,J., S̜ekercioğlu, C̜., Violle, C. & Barnagaud, JY. Trait-environment associations diverge between native and alien breeding bird assemblages on the world's oceanic islands. Global Ecology & Biogeography, in press

32. Mahaut, L., Pironon, S., Barnagaud, JY., Bretagnolle, F., Khoury, C., Mehrabi, Z., Milla, R., Philips, C., Rieseberg, L., Violle, C. & Renard, D. 2022. Matches and mismatches between the global distribution of major food crops and climate suitability. Proceedings of the Royal Society - Series B, 289: 20221542.

31. Rault,C.,  Audevard, A., Bastide, N. & Barnagaud, JY.. 2022. Influence des variables de gestion sur la diversité des communautés d’oiseaux d’eau dans un marais salant protégé. Naturae,18: 309-324

30. Masier, S., Taudière, A., Roy, L., Carrasco, D., Barnagaud, JY. & Roy, L. High-throughput behavioral phenotyping of tiny arthropods: Chemosensory traits in a mesostigmatic hematophagous mite. Journal of Experimental Zoology, in press

29. Bouchard, B., Barnagaud, JY., Verborgh, P., Gauffier, P., Campagna, S. & Célérier, A. 2022. A Field Study of Chemical Senses in Bottlenose Dolphins and Pilot Whales. Anatomical Records - 305(3):668-679.

28. Barnagaud, JY., Brockerhoff, E., Mossion, R., Dufour, P., Pavoine, S. & Barbaro, 2022. L. Trait-habitat associations explain novel bird assemblages mixing native and alien species across New Zealand landscapes. Diversity & Distributions 28(1): 38-52.

27. Fusco, J., Walker, E., Papaïx, J., Debolini, M., Bondeau, A. & Barnagaud, JY. 2021. Land use changes threaten bird taxonomic and functional diversity across the Mediterranean basin: a spatial analysis to prioritize monitoring for conservation. Frontiers in Ecology & Evolution - 9:612356

26. Barnagaud, JY., Geniez, P., Cheyan, M & Crochet, PA. 2021. Climate overrides the effects of land use on the functional composition and diversity of mediterranean reptile assemblages. Diversity and Distributions - 27(1):50-64.

25. Mignet, F., Barnagaud, JY., Barthe, L., Bertolero, A., Bosc, V., Escot, F., Fleuriau, R., Joubert, L., Joyeux, A., Lerat, D., Massez, G., Olivier, A., Owen-Jones, Z., Perrot, K., Petit, J., Poitevin, F., Poulet, L., Priol, P., Rivière, V., Roy, C., Scher, O., Schwartz, T., Thienpont, S., Thirion, JM., Vollot, B., Cheylan, M. 2020. Geographic variation in body size among French populations of the European pond turtle. Amphibia-Reptilia - 42(2): 141-151

24. Roy, L., Taudière, A., Papaïx, J., Blatrix, R., Chiron, G., Zriki, G., Bonato, O. & Barnagaud, JY. Evaluating the link between predation and pest control services in the mite world. Ecology & Evolution - 10:9968-9980

23. Journé, V., Barnagaud, JY., Bernard, C., Crochet, PA., Morin, X. 2020. Correlative climatic niche models predict real and virtual species distributions equally well. Ecology - 101(1),  e02912

22. Barnagaud, JY., Papaïx, J., Audevard, A., Lascève, M. Wroza, S. & Geoffroy, D. 2019. Interspecific variations in shorebird responses to management practices on protected Mediterranean saltpans. Biological Conservation - 237: 470-479

21. Barnagaud, JY., Mazet, N., Munoz, F., Grenié, M., Denelle, P., Sobral, M., Kissling, WD., Sekercioglu, C. & Violle, S. 2019. Functional biogeography of dietary strategies in birds. Global Ecology & Biogeography - 28(07) 1004-1017

20. Bouchard, B., Barnagaud, JY., Glotin, H., Poupard, M., Gauffier, P., Torres-Ortiz, S., Lisney, T., Campagna, S., Rasmussen, M. & Célérier, A. 2019.Behavioural responses of humpback whales to food-related chemical stimuli. PLoS ONE - 14(2): e0212515

19. De Solan, T., Renner, I., Cheylan, M., Geniez, P. & Barnagaud, JY. 2019. Opportunistic records reveal Mediterranean reptiles’ scale-dependent responses to anthropogenic land use. Ecography - 42(3) 608-620

18. Gaüzere, P., Iversen, L., Barnagaud, JY., Svenning, JC. & Blonder, B. 2018. Empirical predictability of community responses to climate change. Frontiers in Ecology and Evolution - 6:186. doi: 10.3389/fevo.2018.00186

17. Pellissier, V., Barnagaud, JY., Kissling, W.D., Sekercioglu, C.H. & Svenning, JC. 2018. Niche packing and expansion account for species richness–productivity relationships in global bird assemblages. Global Ecology and Biogeography - 27(5) 604-615

16. Barnagaud, JY., Kissling, W.D., Tsirogiannis, C., Fisikopoulos, V., Villéger, S., Sekercioglu, C.H. & Svenning, JC. (2017) Biogeographic, environmental and anthropogenic determinants of global patterns in taxonomic and trait turnover in birds. Global Ecology and Biogeography - 26(10) 1190-1200

15. Barnagaud, JY.*, Gaüzere, P.*, Zuckerberg, B., Princé, K., Svenning, JC. Temporal changes in bird functional diversity across the United States. Oecologia - 185(4) 737-748 (*: equal contributions)

14. Toïgo, M., Barraquand, F., Barnagaud, JY., Piou, D., Jactel, H. Geographical variation in climatic drivers of the pine processionary moth population dynamics. Forest Ecology and Management - 404 141-155

13. Charbonnier Y., Gaüzere P., Van Halder I., Nezan J., Barnagaud JY., Jactel H., Barbaro L. 2016. Deciduous trees increase bat diversity at stand and landscape scales in mosaic pine plantations. Landscape Ecology - 31(2) 291-300

12. Charbonnier Y., Barbaro L., Barnagaud JY., Ampoorter E., Nezan J., Verheyen K., Jactel H. 2016. Bat and bird diversity along independent gradients of latitude and tree composition in European forests. Oecologia - 182(2) 529-537.

11. Van Halder I., Barnagaud JY., Jactel H., Barbaro L. 2015. Woodland habitat quality prevails over fragmentation for shaping butterfly diversity indeciduous forest remnants. Forest Ecology and Management - 357 171-180

10. Tjørnløv RS., Kissling WD.,Barnagaud JY., Bøcher PK., Høye TT. 2015. Oviposition site selection of an endangered butterfly at local spatial scales. Journal of Insect Conservation - 19 377-391 [LINK]

9. Barnagaud JY., Papaïx J., Gimenez O. & Svenning JC. 2015. Dynamic spatial interactions between the native invader Brown-headed Cowbird and its hosts. Diversity & Distributions - 21(5) 511-522

8. Barnagaud JY.*, Kissling D.*, Sandel B., Eiserhardt W., Sekercioglu C., Enquist B., Tsirogiannis C., Svenning J.C. 2014. Ecological traits influence the phylogenetic structure of bird species co-occurrences worldwide. * - equal contribution. Ecology Letters - 17(7) 811-820

7. Barnagaud JY., Barbaro L., Papaix J., Deconchat M. & Brockerhoff E. 2014. Habitat filtering by landscape and local forest composition in native and exotic New Zealand birds. Ecology - 95(1) 78-87

6. Barnagaud JY., Barbaro L., Hampe, A., Jiguet F. & Archaux F. 2013. Species’ thermal preferences affect forest bird communities along landscape and local scale habitat gradients. Ecography - 36(11) 1218-1226

5. Bonthoux S., Barnagaud JY., Goulard M. & Balent G. 2013. Contrasting spatial and temporal responses of bird communities to landscape changes. Oecologia - 172(2) 563-574

4. Gimenez O., Abadi F., Barnagaud JY., Blanc L., Buoro M., Cubaynes S., Desprez M., Gamelon M., Guilhaumon F., Lagrange P., Madon B., Marescot L., Papadatou E., Papaïx J., Péron G. & Servanty, S. 2012. How can quantitative ecology be attractive to young scientists? Balancing computer/desk work with field work. Animal Conservation - 16(2) 134-136

3. Barnagaud JY., Barbet-Massin M., Jiguet F., Devictor V., Le Viol I. & Archaux, F. 2012. Relating habitat and climatic niches in birds. Plos One - 7(3): e32819.doi:10.1371/journal.pone.0032819

2. Barnagaud JY., Devictor V., Jiguet F. & Archaux, F. 2011. When species become generalists: on-going large-scale changes in bird habitat specialization. Global Ecology and Biogeography - 20(4) 630-640

1. Barnagaud JY., Crochet PA., Magnani Y., Bernard Laurent A., Menoni E., Novoa C. & Gimenez, O. 2011. Short-term response to the North Atlantic Oscillation but no long-term effects of climate change on the reproductive success of an alpine bird. Journal of Ornithology - 152(3) 631-641



Barnagaud, JY., Issa, N., Dalloyau, S. 2019. Where to watch birds in France. Pelagic Publishing. 336pp

Barnagaud, JY., Issa, N., Dalloyau, S. 2019. Observer les oiseaux en France. Biotope Editions. 351pp


Barnagaud, JY. in LPO Aquitaine & Collectif Faune-Aquitaine. 2015. Atlas des oiseaux nicheurs d'Aquitaine. Delachaux & Niestlé (5 species monographs).

Barnagaud, JY. in Issa, N. & Muller, Y. 2015. Atlas des oiseaux de France. Nidification et présence hivernale. Delachaux & Niestlé (29 species monographs). 

Audevard, A., Barnagaud, JY., Bouzendorf, F., Kervarec, G., Le Corre, Y., Raitière, W., Spanneut, L. & Vincent, S. 2014. L’année ornithologique 2012. Natur Eussa – 5 : 2-59.

Audevard, A., Barnagaud, JY., Champion, M., Kervarec, G., Le Corre, Y., Raitière, W., Siblet, S., Spanneut, L.,, Veyrunes, F. & Vincent, S. 2013. L’année ornithologique 2011. Natur Eussa – 4 : 2-59.

Barnagaud JY. & Issa N. 2011. Le passage postnuptial du Pouillot à grands sourcils Phylloscopus inornatus en France: phénologie et variations spatiales. Alauda - 79(3) : 221-232. 

Liger A., Issa N. & Barnagaud JY. 2008. Le busard pâle Circus macrourus en France : statut récent et éléments d'identification. Ornithos 15(2) : 90-127




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