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Department Head: 

Prof. Dr. Alexandra-Maria Klein
phone:+49 (0)761 203-67770



Mrs. Ilona Winkler
phone:+49 (0)761 203-3635
fax:+49 (0)761 203-3638


Chair of Nature Conservation
& Landscape Ecology
University of Freiburg
Tennenbacher Str. 4
D-79106 Freiburg




Dr. Rita Földesi

Rita Földesi Rita Földesi
Web of Science ResearcherID: AAU-7609-2020
phone: + 49 (0)761 203 -3631
Room No. 503



I was always enthusiastic about biology, and I was particularly interested in the animals. During my studies, I focussed on the topic of water and studied the larvae of soldier flies (Stratiomyidae). During my PhD, I discovered another very important group of flies, the hoverflies (Syrphidae), as a research topic. They are one of the most important pollinator groups in the order Diptera. As many larvae feed on aphids, they play an important role in biological pest control. Through the hoverflies I was able to combine my interests in ecology and agricultural science. I have been studying this group for over 10 years, e.g. the ecology or pollen nutrition, different recording methods and Red List species of hoverflies. As a new member of the WildPosh project, I will be investigating the effect of pesticides on various insect pollinators.




Summer Semester:

  • B.Sc. Modul (4331/5331) Kartierung von Lebensräumen und Schutzgütern
  • M.Sc. Modul (42140) Freilandökologie / (42260) Field Ecology

Winter Semester:

  • B.Sc. Modul (4334/5334) Nachhaltige Landnutzung
  • M.Sc. Modul (51120) Nachhaltige Landnutzung und Naturschutz





since 03/2024
Lecturer/postdoc at the Chair of Nature Conservation and Landscape Ecology, Faculty of Environment and Natural Resources, University of Freiburg
07/2020 - 07/2022 Research associate, Bayerisches Landesamt für Umwelt, Bayerisches Artenschutzzentrum
02/2017 - 03/2019
Postdoc, University of Bonn, INRES, Agroecology and Organic Farming
05/2016 - 10/2016
Postdoc, University of Göttingen, Agroecology
09/2014 - 04/2016
System administrator, Ministry of the Interior Hungary
08/2011 - 08/2014
Researcher, MTA Ecological Research Centre of Hungarian Academy of Sciences, Ecosystem Services Research Group
09/2007 - 09/2010
PhD, University of Debrecen, Centre for Agricultural and Technical Sciences, Faculty of Agriculture, Chair of Plant Conservation
University of Bonn (6 months with scholarship); Technical University of Dresden (6 months with scholarship)
 09/2005 - 09/2007

Biotechnologist, University of Debrecen, Medical and Health Science Centre, Faculty of Medicine, Department of Operative Techniques and Surgical Research

1998 - 2003 Diploma Biology/Ecology, University of Debrecen, Hungary








  • Reverté, S., Miliĉić, M., Aĉanski, J.,Andrić, A., Aracil, A., Aubert, ..., Földesi, R. et al. (2023): National records of 3000 European bee and hoverfly species: A contribution to pollinator conservation. Insect Conservation and Diversity, 1-18. Link

  • Garratt, M.P.D., de Groot, G.A., Albrecht, M., Bosch, J., Breeze, T.D., Fountain, M.T., Klein, A.M., McKerchar, M., Park, M., Paxton, R.J., Potts, S.G., Pufal, G., Rader, R., Senapathi, D., Andersson, G.K.S., Bernauer, O.M., Blitzer, E.J., Boreux, V., Campbell, A.J., Carvell, C., Földesi, R., García, D., Garibaldi, L.A., Hambäck, P.A., Kirkitadze, G., Kovács-Hostyánszki, A., Martins, K.T., Miñarro, M., O’Connor, R., Radzeviciute, R., Roquer-Beni, L., Samnegård, U., Scott, L., Vereecken, N.J., Wäckers, F., Webber, S.M., Japoshvili, G., & Zhusupbaeva, A. (2021): Opportunities to reduce pollination deficits and address production shortfalls in an important insect-pollinated crop. Ecological Applications 31( 8):e02445. Link

  • Hutchinson, L.A., Oliver, T. H., ..., Földesi, R., ..., Klein, A.M., ... & Garratt, M.P.D. (2021): Using ecological and field survey data to establish a national list of the wild bee pollinators of crops. Agriculture. Ecosystems & Environment 315: 107447. Link

  •  Földesi, R., Howlett, B.G., Grass, I. & Batáry, P. (2020): Larger pollinators deposit more pollen on stigmas across multiple plant species – a meta-analysis. Journal of Applied Ecology 58: 699-707. Link

  • Steenis, J. van et al. (2020): Faunistical overview of the European species of the genera Brachyopa Meigen, 1822 and Hammerschmidtia Schummel, 1834 (Diptera, Syrphidae). Bonn Zoological Bulletin 69 (2): 309-367.

  • Gallé, R., Geppert, C., Földesi, R., Tscharntke, T. & Batáry, P. (2020): Arthropod functional traits shaped by landscape-scale field size, local agri-environment schemes and edge effects. Basic and Applied Ecology 48: 102-111. Link

  • Geppert, C., Hass, A., Földesi, R., Donkó, B., Akter, A., Tscharntke, T. & Batáry, P. (2020): Agri-environment schemes enhance pollinator richness and abundance but bumblebee reproduction depends on field size. Journal of Applied Ecology 57: 1818-1828. Link

  • Templ, B., Mózes, E., Templ, M., Földesi, R., Szirák, Á., Báldi, A. & Kovács-Hostyánszki, A. (2019): Habitat-dependency of transect walk and pan trap methods for bee sampling in farmlands. Journal of Apicultural Science 63: 93-115. Link

  • Kovács-Hostyánszki, A., Földesi, R., Báldi, A., Endrédi, A. & Jordán, F. (2019): The vulnerability of plant-pollinator communities to honeybee decline: A comparative network analysis in different habitat types. Ecological Indicators 97: 35-50. Link

  •  Kőrösi, Á., Markó, V., Kovács-Hostyánszki, A., Somay, L., Varga, Á., Elek, Z., Boreux, V., Klein, A.M., Földesi, R. & Báldi, A. (2018): Climate-induced phenological shift of apple trees has diverse effects on pollinators, herbivores and natural enemies. PeerJ 6:e5269. Link

2011 - 2017
  • Markó, V., Elek, Z., Kovács-Hostyánszki, A., Kőrösi, Á., Somay, L., Földesi, R., Varga, A., Iván, A. & Báldi, A. (2017): Landscapes, orchards, pesticides – abundance of beetles (Coleoptera) in apple orchards along pesticide toxicity and landscape complexity gradients. Agriculture, Ecosystems and Environment 247: 246-254. Link

  • Földesi, R., Kovács-Hostyánszki, A., Kőrösi, Á., Somay, L., Elek, Z., Markó, V., Sárospataki, M., Bakos, R., Varga, Á., Nyisztor, K. & Báldi, A. (2016): Relationships between wild bees, hoverflies and pollination success in apple orchards with different landscape contexts. Agricultural and Forest Entomology 18: 68-75. Link

  • Kovács-Hostyánszki, A., Földesi, R., Mózes, E., Szirák, A., Fischer, J., Hanspach, J. & Báldi, A. (2016): Conservation of pollinators in traditional agricultural landscapes – New challenges in Transylvania (Romania) posed by EU accession and recommendations for future research. PLOS One 11:e0151650. Link

  • Fenesi, A., Vágási, C.I., Beldean, M., Földesi, R., Kolcsár, L.P., Shapiro, J.T., Török, E. & Kovács-Hostyánszki, A. (2015): Solidago canadensis impacts on native plant and pollinator communities in different-aged old fields. Basic and Applied Ecology 16: 335-346. Link

  • Földesi, R. & Kovács-Hostyánszki, A. (2014): Hoverfly (Diptera: Syrphidae) community of a cultivated arable field and the adjacent hedgerow near Debrecen, Hungary. Biologia (Bratislava) 69: 381-388. Link

  • Szirák, Á., Kovács-Hostyánszki, A., Földesi, R., Mózes, E. & Báldi, A. (2013): Landscape and agricultural management effects on pollinator communities of pastures and arable fields. Természetvédelmi Közlemények 19: 48-61. Link

  • Földesi, R. (2011): Role of hoverflies in pollination and biological pest control. Természetvédelmi Közlemények 17: 31-41. Link

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