Fabrice, Requier

Agroecology, Ecosystem services, Pollinator ecology, Biodiversity conservation
Mail: fabrice.requier[at]ird.fr ; fabrice.requier[at]universite-paris-saclay.fr
Phone: +33 (0)1 69 15 68 03
Office: 1316
Citation Google Scholar
Citation Google Scholar

For more details (Curriculum Vitae, Group, Research projects): https://sites.google.com/site/mrequierfabrice


I am a researcher with interest in agroecology and pollinator ecology. My research focuses on pollinator responses to changes in landscape structure, exposures to agrochemicals and pressures from (invasive) biotic factors, and the subsequent implications for biological conservation and ecosystem services. For this I generally combine the use of lab experiments, field monitoring and modelling techniques, and I have growing interest in inclusive socio-ecological approaches. My work is oriented towards applied perspectives including the development of decision-support tools for informing environmental policies and stakeholders.

Editorial activity

Associate Editor in Journal of Applied Ecology (since January 2018)
Associate Editor in Frontiers in Bee Science  (since January 2023)

reviewer activity:

Agriculture, Ecosystems & Environment; Agronomy for Sustainable Development; Biological Conservation; Diversity; Ecology; Ecology and Evolution; Global Change Biology; Global Ecology & Conservation; Journal of Applied Ecology; Journal of the Royal Society Interface; Landscape Ecology; Landscape and Urban Planning; Nature Food; Oecologia; Population Ecology; Royal Society Open Science; Scientific Reports



Requier, F., Sibaja Leyton, M., Morales, C.L., et al. [59 coautors] (accepted) First large-scale study reveals important colony losses of managed honey bees and stingless bees in Latin America. Scientific Reports

Groeneveld, J., Odemer, R., Requier, F. (accepted) Brood indicators are an early warning signal of honey bee colony collapse – a simulation study. Plos One

Requier, F., Nürnberger, F., Rojas-Nossa, S., Rome, Q. (in press) Spatial distribution of Vespa velutina-mediated beekeeping risk in France and Germany. Journal of Pest Science https://doi.org/10.1007/s10340-024-01782-1 

Desclos le Peley, V., Moreau-Vauzelle, C., Raboteau, D., Chevallereau, C., Grateau, S., Requier, F., Aupinel, P., Richard, F.J (in press) Experimental ecotoxicology procedures interfere with honey bee life history. Environmental Toxicology and Chemistry https://doi.org/10.1002/etc.5872 

Vardakas, P., Mainardi, G., Minaud, E., Patalano, S., Rebaudo, F., Requier, F., Steffan-Dewenter, I., Hatjina, F. (in press) Unveiling Beekeepers’ Use and Preference of Precision Apiculture Systems. Journal of Apicultural Research

Zapata-Hernandez, G., Gajardo-Rojas, M., Calderón-Seguel, M., Muñoz, A., Yañez, K., Requier, F., Fontúrbel, F., Ormeño, P., Arrieta, H. (2024) Advances and knowledge gaps on climate change impacts on honey bees and beekeeping: A systematic review. Global Change Biology 30(3), e17219.  https://doi.org/10.1111/gcb.17219

Bastide, H., Legout, H., Dogbo, N., Ogereau, D., Prediger, C., Carcaud, J., Filée, J., Garnery, L., Gilbert, C., Marion-Poll, F., Requier, F., Sandoz, J.C., Yassin, A. (2024) The genome of the blind bee louse fly reveals deep convergences with its social host and illuminates Drosophila origins. Current Biology 34(5), 1122–1132. https://doi.org/10.1016/j.cub.2024.01.034 


Blareau, E., Sy, P., Daoud, K., Requier, F. (2023) Insect-mediated pollination of strawberries in an urban environment. Insects, 14(11), 877. https://doi.org/10.3390/insects14110877

Geslin, B., Mouillard-Lample, L., Zakardjian, M., Dajoz, I., Flacher, F., Henry, M., Perrard, A., Requier, F., Ropars, L., Schatz, B., Vereecken, N.J., Gauzens, B. (2023) New insights on Massively Introduced Managed Species and their consequences for plant–pollinator interactions. Advances in Ecological Research 68, 63-89. https://doi.org/10.1016/bs.aecr.2023.09.003

Requier, F., Fournier, A., Pointeau, S., Rome, Q., Courchamp, F. (2023) Economic Costs of the Invasive Yellow-Legged Hornet on Honey Bees. Science of the Total Environment 898, 165576. https://doi.org/10.1016/j.scitotenv.2023.165576

Poidatz, J., Chiron, G., Kennedy, P., Osborne, J., Requier, F. (2023) Density of predating Asian hornets at hives disturbs the 3D flight performance of honey bees and decreases predation success. Ecology and Evolution 13:e9902. https://10.1002/ece3.9902

Decourtye, A., Rollin, A., Requier, F., Allier, F., Rüger, C., Vidau, C., Henry, M. (2023) Decision-making criteria for pesticide spraying considering the bees’ presence on crops to reduce their exposure risk. Frontiers in Ecology and Evolution 11:1062441. https://doi.org/10.3389/fevo.2023.1062441

Requier, F., Pérez-Méndez, N., Andersson, G.K.S., Blareau, E., Merle, I., Garibaldi, L.A. (2023) Bee and non-bee pollinator importance for food local security. Trends in Ecology and Evolution 38(2), 196-205. https://doi.org/10.1016/j.tree.2022.10.006


Sponsler, D.B., Requier, F., Kallnik, K., Claßen, A., Maihoff, A.F., Sieger, J., Steffan-Dewenter, I. (2022) Contrasting patterns of richness, abundance, and turnover in mountain bumble bees and their floral hosts. Ecology 103(7), e3712. https://doi.org/10.1002/ecy.3712

Panziera, D., Requier, F., Chantawannakul, P., Pirk, C., Blacquière, T. (2022) The diversity decline in wild and managed honeybees urges for an integrated conservation approach. Frontiers in Ecology and Evolution 10, 767950. https://doi.org/10.3389/fevo.2022.767950

Merle, I., Hispólito, J., Requier, F. (2022) Towards integrated pest and pollinator management in tropical crops. Current Opinion in Insect Science 50:100866. https://doi.org/10.1016/j.cois.2021.12.006

Parreño, M.A., Alaux, C., Butschkau, S., Buydens, L., Filipiak, M., Henry, M., Kuhlmann, M., Leroy, C., Meeus, I., Requier, F., Ruedenauer, F., Smagghe, G., Stevenson, P.C., Keller, A., Klein, A-M., Palmer-Young, E., Piot, N., Leonhardt, S.D. (2022) Critical links between biodiversity and health in wild bee conservation. Trends in Ecology and Evolution 37(4), 309-321. https://doi.org/10.1016/j.tree.2021.11.013

Sponsler, D.B., Kallnik, K., Requier, F., Claßen, A., Maihoff, A.F., Sieger, J., Steffan-Dewenter, I. (2022) Floral preferences of mountain bumble bees are constrained by functional traits but flexible through elevation and season. Oikos e08902. https://doi.org/10.1111/oik.08902

Barascou, L., Requier, F., Sené, D., Crauser, D., Le Conte, Y., Alaux, C. (2022) Delayed effects of a single dose of a neurotoxic pesticide (sulfoxaflor) on honeybee foraging activity. Science of the Total Environment 805:150351. https://doi.org/10.1016/j.scitotenv.2021.150351


Parejo, M., Requier, F., Invernizzi, C., Aldea-Sánchez, P., Basualdo, M., Brodschneider, R., Correa-Benítez, A., Guzman-Novoa, E., Pirk, C.W.W., Steinhauer, N., Velarde, R., Neumann, P., Antunez, K. (2021) Joining Forces across Continents: The 1st SOLATINA–COLOSS Conference. Bee World 99(2), 68-71. https://doi.org/10.1080/0005772X.2021.2011044

Villagomez, G. Nürnberger, N., Requier, F., Schiele, S., Steffan-Dewenter, I. (2021) Effects of temperature and photoperiod on the seasonal timing of Western honey bee colonies and an early spring flowering plant. Ecology and Evolution 11(12), 7834-7849. https://doi.org/10.1002/ece3.7616

Mayr, A.V., Requier, F., Peters, M.K., Steffan-Dewenter, I. (2021) Seasonal variation in the ecology of tropical cavity-nesting Hymenoptera on Mt. Kilimanjaro. Frontiers in Biogeography 13.3, e49389. https://doi.org/10.21425/F5FBG49389 

Chabert, S., Requier, F., Chadoeuf, J., Guilbaud, L., Morison, N., Vaissière, B.E. (2021) Rapid measurement of the adult worker population size in honey bees. Ecological Indicators, 122, 107313.  https://doi.org/10.1016/j.ecolind.2020.107313

Le Provost, G., Badenhausser, I., Violle, C., Requier, F., D’Ottavio, M., Roncoroni, M., Gross, L., Gross, N. (2021) Grassland-to-crop conversion in agricultural landscapes has lasting impact on the trait diversity of bees. Landscape Ecology 36, 281–295.https://doi.org/10.1007/s10980-020-01141-2 


Prado, A.*, Requier, F.*, Crauser, D., Le Conte, Y, Bretagnolle, V., Alaux, C. (2020) Honeybee lifespan: the critical role of pre-foraging stage. Royal Society Open Science, 7, 200998. https://doi.org/10.1098/rsos.200998 [*Equal contribution]

Requier, F., Henry, M., Decourtye, A., Brun, F., Aupinel, P., Rebaudo, F., Bretagnolle, V. (2020) Measuring ontogenetic shifts in central-place foragers: a case study with honey bees. Journal of Animal Ecology 89, 1860–1871. https://doi.org/10.1111/1365-2656.13248

Requier, F., Jowanowitsch, K.K., Kallnik, K., Steffan-Dewenter, I. (2020) Assessing resource limitation in bumble bee ecology. Bulletin of the Ecological Society of America 101(2):e01675. https://doi.org/10.1002/BES2.1675

Pérez-Méndez, N., Andersson, G.K.S., Requier, F., Hipólito-Sousa, J., Aizen, M., Morales, C., García, N., Gennari, G., Garibaldi, L.A. (2020) The economic cost of losing native pollinator species for orchard production. Journal of Applied Ecology 57(3), 599-608. https://doi.org/10.1111/1365-2664.13561

Requier, F., Jowanowitsch, K.K., Kallnik, K., Steffan-Dewenter, I. (2020) Limitation of complementary resources affects colony growth, foraging behavior and reproduction in bumble bees. Ecology 101(3):e02946. https://doi.org/10.1002/ecy.2946

Requier, F., Andersson, G.K.S., Oddi, F., Garibaldi, L.A. (2020) Citizen science in developing countries: how to improve volunteer participation. Frontiers in Ecology and the Environment 18(2), 101-108. https://doi.org/10.1002/fee.2150

Requier, F., Fournier, A., Rome, Q., Darrouzet, E. (2020) Science communication is needed to inform risk perception and actions of stakeholders. Journal of Environmental Management 257, 109983. https://doi.org/10.1016/j.jenvman.2019.109983

Requier, F., Leonhardt, S.D. (2020) Beyond flowers: Including non-floral resources in bee conservation schemes. Journal of Insect Conservation 24, 5-16. https://doi.org/10.1007/s10841-019-00206-1

Requier, F., Rome, Q., Villemant, C., Henry, M. (2020) A biodiversity-friendly method to mitigate the invasive Asian hornet’s impact on European honey bees. Journal of Pest Science 93, 1-9. https://doi.org/10.1007/s10340-019-01159-9

Requier, F., Paillet, Y., Laroche, F., Rutschmann, B., Zhang, J., Lombardi, F., Svoboda, F., Steffan-Dewenter, I. (2020) Contribution of European forests to safeguard wild honey bee populations. Conservation Letters, 13, e12693. https://doi.org/10.1111/conl.12693


Requier, F. (2019) Bee colony health indicators: synthesis and future directions. CAB reviews 14, 1-13. https://doi.org/10.1079/PAVSNNR201914056

Requier, F. & Crewe, R.M. (2019) Learning from wild honey bees. Trends in Ecology & Evolution 34(11), 967-968.https://doi.org/10.1016/j.tree.2019.08.002

Pietrantuono, A.L., Requier, F., Fernández-Arhex, V., Winter, J., Huerta, G., Guerrieri, F. (2019) Honeybees generalize among pollen scents from plants flowering in the same seasonal period. Journal of Experimental Biology https://doi.org/10.1242/jeb.201335

Requier, F., Garnery, L., Kohl, P.L., Njovu, H.K., Pirk, C.W.W., Crewe, R.M., Steffan-Dewenter, I. (2019) The conservation of native honey bees is crucial. Trends in Ecology & Evolution 34(9), 789-798. https://doi.org/10.1016/j.tree.2019.04.008

Martin E.A., Feit B., Requier F., Friberg H., Jonsson M. (2019) Assessing the resilience of biodiversity-driven functions in agroecosystems under environmental change. Advances in Ecological Research 60, 59-123. https://doi.org/10.1016/bs.aecr.2019.02.003

Requier, F., Rome, Q., Chiron, G., Decante, D., Marion, S., Ménard, M., Muller, F., Villemant, C., Henry, M. (2019) Predation of the invasive Asian hornet-induced risk on honeybee colony collapse affects foraging activity and survival probability of honey bees in Western Europe. Journal of Pest Science 92(2), 567-578. https://doi.org/10.1007/s10340-018-1063-0

Prado, A., Pioz, M., Vidau, C., Requier, F., Brunet, J.L., Jury, M., Le Conte, Y., Alaux, C. (2019) Exposure to pollen-bound pesticide mixtures induces longer-lived but less efficient honey bees. Science of the Total Environment 650, 1250-1260. https://doi.org/10.1016/j.scitotenv.2018.09.102


Antúnez, K.*, Requier, F.*, Aldea, P., Basualdo, M., Branchiccela, B., Calderón, R., Correa, A., Delgado Canedo, A., Fuselli, S., Morales, C., Pérez, E., Plischuk, S., Porrini, M., Goncalves, L.S., Tapia, J.M., Torres, A., Velarde, R., Invernizzi, C. (2018) SOLATINA: a Latin-American Bee Research Association to foster the interactions between scientists and coordinate large-scale research programs. Bee World 95(4), 124-127. https://doi.org/10.1080/0005772X.2018.1508813 [*Equal contribution]

Requier, F., Antúnez, K., Morales, C.L., Aldea Sánchez, P., Castilhos, D., Garrido, M., Giacobino, A., Reynaldi, F.J., Rosso Londoño, J.M., Santos, E., Garibaldi, L.A. (2018) Trends in beekeeping and honey bee colony losses in Latin America. Journal of Apicultural Research 57(5), 657-662. https://doi.org/10.1080/00218839.2018.1494919

Garibaldi, L.A., Andersson, G.K.S., Requier, F., Fijen, T.P.M., Hipólito, J., Kleijn, D., Pérez-Méndez, N, Rollin, O. (2018) Complementarity and synergisms among ecosystem services supporting crop yield. Global Food Security 17, 38-47. https://doi.org/10.1016/j.gfs.2018.03.006

Agüero J.I., Rollin O., Torretta J.P., Aizen M.A., Requier F., Garibaldi L.A. (2018). Honeybee impact on plants and wild bees in natural habitats. Ecosistemas 27(2): 60-69. https://doi.org/10.7818/ECOS.1365

Requier, F., Andersson, G.K.S., Oddi, F., Garcia, G., Garibaldi, L.A. (2018) Perspectives from the survey of honeybee colony losses 2015-16 in Argentina. Bee World 5(1), 9-12. https://doi.org/10.1080/0005772X.2018.1413620


Garibaldi L.A., Requier F., Rollin O., Andersson G.K.S. (2017) Towards an integrated species and habitat management of crop pollination. Current Opinion in Insect Science21, 1-10. https://doi.org/10.1016/j.cois.2017.05.016  

Requier, F., Odoux, J.F., Henry, M., Bretagnolle, V. (2017) The carry-over effects of pollen shortage decrease the survival of honeybee colonies in farmlands. Journal of Applied Ecology 54(4), 1161-1170. https://doi.org/10.1111/1365-2664.12836

Henry, M., Becher, M.A., Osborne, J.L., Kennedy, P.J., Aupinel, P., Bretagnolle, V., Brun, F., Grimm, V., Horn, J., Requier, F. (2017) Predictive systems models can help elucidate bee declines driven by multiple combined stressors. Apidologie 48, 328-339.https://doi.org/10.1007/s13592-016-0476-0


Requier, F., Garcia, G., Andersson, G.K.S., Oddi, F., Garibaldi, L.A. (2016) Honey bee colony losses: what’s happening in South America? American Bee Journal 156(11), 1247-1250.

Requier, F., Chiron, G. & Ménard, M. (2016) Décrypter le vol des abeilles en 3D. Biofutur 380, 48-53.

Le Féon, V., Henry, M., Guilbaud, L., Coiffait-Gombault, C., Dufrêne, E., Kolodziejczyk, E., Kuhlmann, M., Requier, F., Vaissière, B.E. (2016) An expert-assisted citizen science program provides general patterns on bee assemblages at a national scale. Journal of Insect Conservation 20, 905-918. https://doi.org/10.1007/s10841-016-9927-1

Decourtye, A., Vidau, C., Rollin, O., Requier, F., Rüger, C., Allier, F., Le Féon, V., Kretschmar, A., Devilliers, J., Henry, M., Odoux, J.F. (2016) Fréquentation des cultures par les abeilles mellifères et sauvages : synthèse des connaissances pour réduire le risque d’intoxication aux pesticides. Cahiers Agricultures 25(4), 44001. https://doi.org/10.1051/cagri/2016025


Requier, F., Odoux, J. F., Tamic, T., Moreau, N., Henry, M., Decourtye, A., Bretagnolle, V. (2015) Honey-bee diet in intensive farmland habitats reveals an unexpectedly high flower richness and a critical role of weeds. Ecological Applications 25, 881-890. https://doi.org/10.1890/14-1011.1

Requier, F., Odoux, J.F., Tamic, T., Moreau, N., Henry, M., Decourtye, A., Bretagnolle, V. (2015) Floral resources used by honey bees in agricultural landscapes. Bulletin of the Ecological Society of America 96, 487-491. https://doi.org/10.1890/0012-9623-96.3.487

Requier, F. (2015) Ecologie des abeilles mellifères en paysage agricole intensif: le prix cache d’une ressource florale fluctuante. Bulletin de la Société Entomologique de France 120, 121-127.


Requier, F., Henry, M., Decourtye, A. (2014) Les puces RFID volent au secours des abeilles. Biofutur 357, 46-51.

Henry, M., Bertrand, C., Le Féon, V., Requier, F., Odoux, J.F., Aupinel, P., Bretagnolle, V., Decourtye, A. (2014) Pesticide risk assessment in free-ranging bees is weather and landscape dependent. Nature Communications 5, 4359. https://doi.org/10.1038/ncomms5359

Bailey, S., Requier, F., Nusillard, B., Potts, S. G., Roberts, S., Bouget, C. (2014) Distance from forest edge affects bee pollinators in oilseed rape fields. Ecology and Evolution 4(4), 370-380. https://doi.org/10.1002/ece3.924

Odoux, J.F., Aupinel, P., Gateff, S., Requier, F., Henry, M., Bretagnolle, V. (2014) ECOBEE: a tool for long-term bee colony monitoring at landscape scale in West European intensive agrosystems. Journal of Apicultural Research 53, 57-66. https://doi.org/10.3896/IBRA.


Chiron, G., Gomez-Krämer, P., Menard, M., Requier, F. (2013) 3D Tracking of Honeybees Enhanced by Environmental Context. Lecture Notes in Computer Science, 8156, 702-711. https://doi.org/10.1007/978-3-642-41181-6_71

Decourtye, A., Gayrard, M., Chabert, A., Requier, F., Rollin, O., Odoux, J.F., Henry, M., Allier, F., Cerrutti, N., Chaigne, G., Petrequin, P., Plantureux, S., Gaujour, E., Emonet, E., Bockstaller, C., Aupinel, P., Michel, N., Bretagnolle, V. (2013) Projet Polinov, épisode 2 : vers des systèmes de cultures favorables aux abeilles. Phytoma 667, 11-14.

Decourtye, A., Gayrard, M., Chabert, A., Requier, F., Rollin, O., Odoux, J.F., Henry, M., Allier, F., Cerrutti, N., Chaigne, G., Petrequin, P., Plantureux, S., Gaujour, E., Emonet, E., Bockstaller, C., Aupinel, P., Michel, N., Bretagnolle, V. (2013) Projet Polinov, épisode 1 : pour des systèmes de cultures favorables aux abeilles. Phytoma 666, 41-46.


Henry, M., Beguin, M., Requier, F., Rollin, O., Odoux, J. F., Aupinel, P., Aptel, J., Tchamitchian, S., Decourtye, A. (2012) Response to Comment on “A Common Pesticide Decreases Foraging Success and Survival in Honey Bees”. Science 337, 1453. https://doi.org/10.1126/science.1224930

Henry, M., Beguin, M., Requier, F., Rollin, O., Odoux, J. F., Aupinel, P., Aptel, J., Tchamitchian, S., Decourtye, A. (2012) A common Pesticide Decreases Foraging Success and Survival in Honey Bees. Science 336, 348-350. https://doi.org/10.1126/science.1215039

Chapitres de livre

Requier, F. (2019) Chapter 9: Honey Bees in Latin America.In: Ilyasov, R. & Kwon, H.W. (Eds) Phylogenetics of Bees, Taylor & Francis Group, p. 206-221.

Bailey, S., Requier, F., Lagarde, N., Nusillard, B., Bouget, C. (2015) Chapitre 9 : Effets des éléments boisés sur les abeilles sauvages dans différents paysages agricoles. Étude des lisières forêt-colza et forêt-verger sur les abeilles sauvages dans différents paysages agricoles. In : Maire E. & Laffly D. (Eds) Abeilles et paysages : Enjeux apicoles et agricoles, Quae editions, p. 127-140.

Henry, M., Odoux, J.F., Requier, F., Rollin, O., Tamic, T., Toullet, C., Le Mogne, C., Peyra, E., Decourtye, A., Aupinel, P., Bretagnolle, V. (2015) Chapitre 7 : Abeilles domestiques dans une plaine céréalière intensive : la composition du paysage influence la dynamique des colonies. In : Maire E. & Laffly D. (Eds) Abeilles et paysages : Enjeux apicoles et agricoles, Quae editions, p. 115-119.

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