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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. Julia Osterman

 JOsterman.jpgJulia Osterman
Web of Science ResearcherID: AAJ-8589-2020
University of Gothenburg



I am interested in the bee ecology, wild bee conservation and the essential contribution of bees to agriculture: pollination of crops. My aim is to get a better understanding how crop pollination can be integrated into farm management to attain sustainable yields for a growing human population and to ensure farmers` livelihood. For example, I investigate how the agricultural landscape (i.e. cultivation of oilseed rape) effects pollination of a co-flowering crop (apple). Also, I am interested into farmers` knowledge and perception of pollinators across the globe. By interviewing farmers, I aim to contribute to a better understanding of local and indigenous knowledge, to prevent further losses of bee diversity and abundances. Also, my research contributes to an understanding of how on-farm management decisions (e.g. use of pesticides, floral strips, crop rotation) alter bee abundances and diversity and consequently pollination services. This was the focus of the NutriB2 and PoshBee projects, as well as the current RestPoll project.




since 2023
Visiting researcher at the Chair of Nature Conservation and Landscape Ecology, University of Freiburg
12/2021 - 2022
Research assistant at the Chair of Nature Conservation and Landscape Ecology, University of Freiburg
02/18 - 09/21
PhD student, Martin Luther University Halle-Wittenberg, Institute of Biology, General Zoology
Thesis: The ecology of crop pollination and its integration into farm management to ensure sustainable and stable crop yields. Supervised by: Prof. Dr. Robert J. Paxton
06/18 – 06/19

Parental leave

09/16 – 01/17 Internship at NGO Yunkawasi, Andean bear research in Northern Peru
02/15 – 08/16 Environmental analyst at the Kaminsky Naturschutzplanung GmbH
07/15 – 04/16 Parental leave
10/12 –06/14 Environmental Science - Soil, Water and Biodiversity
University of Hohenheim and Swedish University of Agricultural Science
Master of Science, Master Thesis: Neonicotinoids and Honey bee health
10/09 –07/12 Environmental Science with minor subject hydrology, Albert-Ludwigs-University Freiburg





Granted host for the DAAD RISE program
02/18 Grant for women in science from the Martin-Luther University Halle-Wittenberg, Germany


Best poster presentation at the ICPPR conference in Ghentel
07/14 Helmut-Aurenz-Scholarship for financing a research project in Europe
11/13 Best poster presentation at the ELLS students’ conference in Vienna
09/13 Germany Scholarship financed by Karl Schlecht foundation







  • Eeraerts, M. & Osterman, J. (2024): Wildbienen verbessern die Bestäubungsleistungen von Honigbienen. European Fruit Magazine 4: 6­-7.­ Link

  • Willcox, B.K., Potts, S.G., Brown, M.J.F., […] Osterman, J., […] Wintermantel, D. et al. & Senapathi, D. (2023): Emerging threats and opportunities to managed bee species in European agricultural systems: a horizon scan. Scientific Reports 13: 18099. online first. doi: 10.1038/s41598-023-45279-w. Link
  • Leclercq, N., Marshall, L., Weekers, T., […] Osterman, J. et al. & Vereecken, N.J. (2023): Global taxonomic, functional, and phylogenetic diversity of bees in apple orchards. Science of The Total Environment 901: 165933. Link
  • Hellström, S., Strobl, V., Straub, L., Osterman, W.H.A., Robert J. Paxton, R.J. & Osterman, J. (2023): Beyond generalists: The Brassicaceae pollen specialist Osmia brevicornis as a prospective model organism when exploring pesticide risk to bees. Environmental and Sustainability Indicators 18: 100239. Link
  • Mazi, S., Paxton, R.J. & Osterman, J. (2023): A subset of wild bee species boosts the pollination of pigeon pea (Cajanus cajan: Fabaceae), an important crop plant of Cameroon. Journal of Apicultural Research 62: 598-606. Link
  • Osterman, J. (2022): Hur går det för äppleträden om honungsbin föredrar raps? Gadden. 3 pp. 14-17. Link
  • Osterman, J., Wintermantel, D. & Klein A.M. (2022): Welche Produkte Bienen gefährden. BWagrar. 32 pp. 16-17. Link
  • Osterman, J., Wintermantel, D. & Klein, A.M. (2022): Verbot von Sulfoxaflor - Der Nachfolger von Neonikotinoiden ist auch gefährlich. bienen&natur. 8 pp. 34-36. Link


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