Team > M.Sc. Julian Brehm

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

PhD candidate

Project: Effects of microparticles on aquatic model macrofauna depending on particle properties: comparison of microplastics to natural particles

In my project, I investigate the effects of microplastics (MP) with different physical and chemical properties on the limnetic water flea (Daphnia) and the quagga mussel (Dreissena bugensis) additionally a comparison to natural particulate matter will be drawn.

The organisms were chosen as water fleas and mussels play a crucial role in aquatic food webs. Furthermore, they are filter feeders and are exposed to a continuous load of particles, which therefore increases the risk to unselectively ingest MP.

For Daphnia, typical life history parameters, such as mortality, growth rate and number of offspring will be analyzed, and in case of D. bugensis behavioural changes and stress markers will be looked at.

In order to understand the biological and biochemical mechanisms underlying the effects of MP on those organisms, the transcriptomes and gut microbiomes of MP exposed animals will be analyzed and compared to the respective controls. Additionally, as proteins are the main effectors in metabolic pathways and signal cascades, a holistic as well as tissue specific proteomic approach will be conducted with the model organism Daphnia, to investigate the effects of MP. The obtained data will substantially help to shed light on the mechanisms underlying the effects of MP on those organisms.

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

Master in Molecular Ecology
PhD Candidate Animal Ecology | Supervisor Prof. Dr. Christian Laforsch

PhD Project: CRC1357 Microplastic, subproject A01 | Effects of microparticles on aquatic model macrofauna depending on particle properties: Comparison of microplastics to natural particles

Research Interests: Animal Ecology, Invertebrate Zoology, Biodiversity, Animal Behaviour

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

Publications

2023

Anja Ramsperger, Enrico Bergamaschi, Marco Panizzolo, Ivana Fenoglio, Francesco Barbero, Ruud Peters, Anna Undas, Sebastian Purker, Bernd Giese, Carina R. Lalyer, Alba Tamargo, M. Victoria Moreno-Arribas, Hans-Peter Grossart, Dana Kühnel, Jana Dietrich, Friedrich Paulsen, Anani K. Afanou, Shan Zienolddiny-Narui, Stine Eriksen Hammer, Torunn Kringlen Ervik, Pål Graff, Bendik C. Brinchmann, Karl-Christian Nordby, Håkan Wallin, Matteo Nassi, Federico Benetti, Michela Zanella, Julian Brehm, Holger Kress, Martin G. J. Löder, Christian Laforsch: Nano- and microplastics : a comprehensive review on their exposure routes, translocation, and fate in humans. In: NanoImpact, 29 (2023). - .
doi:10.1016/j.impact.2022.100441

Julian Brehm, Sven Ritschar, Christian Laforsch, Magdalena Mair: The complexity of micro- and nanoplastic research in the genus Daphnia : A systematic review of study variability and a meta-analysis of immobilization rates. In: Journal of Hazardous Materials, 458 (2023). - .
doi:10.1016/j.jhazmat.2023.131839

Benjamin Silas Gilfedder, Hassan Elagami, Jan-Pascal Boos, Julian Brehm, Matthias Schott, L. Witt, Christian Laforsch, Sven Frei: Filter feeders are key to small microplastic residence times in stratified lakes : A virtual experiment. In: Science of the Total Environment, 890 (2023). - .
doi:10.1016/j.scitotenv.2023.164293

Yuanhu Zhang, Tasmai Paul, Julian Brehm, Matthias Völkl, Valérie Jérôme, Ruth Freitag, Christian Laforsch, Andreas Greiner: Role of Residual Monomers in the Manifestation of (Cyto)toxicity by Polystyrene Microplastic Model Particles. In: Environmental Science & Technology, 57 (2023). - S. 9925-9933.
doi:10.1021/acs.est.3c01134

2022

Ann-Kathrin Müller, Julian Brehm, Matthias Völkl, Valérie Jérôme, Christian Laforsch, Ruth Freitag, Andreas Greiner: Disentangling biological effects of primary nanoplastics from dispersion paints' additional compounds. In: Ecotoxicology and Environmental Safety, 242 (2022). - .
doi:10.1016/j.ecoenv.2022.113877

Magdalena V. Wilde, Julian Brehm, Michael Schwarzer, Jan B. Stöckl, Christian Laforsch, Thomas Fröhlich: Improving the proteome coverage of Daphnia magna : implications for future ecotoxicoproteomics studies. In: Proteomics, 22 (2022). - .
doi:10.1002/pmic.202100289

Julian Brehm, Magdalena V. Wilde, Lukas Reiche, Lisa-Cathrin Leitner, Benedict Petran, Marcel Meinhart, Simon Wieland, Sven Ritschar, Matthias Schott, Jan-Pascal Boos, Sven Frei, Holger Kress, Jürgen Senker, Andreas Greiner, Thomas Fröhlich, Christian Laforsch: In-depth characterization revealed polymer type and chemical content specific effects of microplastic on Dreissena bugensis. In: Journal of Hazardous Materials, 437 (2022). - .
doi:10.1016/j.jhazmat.2022.129351

Michael Schwarzer, Julian Brehm, Martina Vollmer, Julia Jasinski, Chengzhang Xu, Shakir Zainuddin, Thomas Fröhlich, Matthias Schott, Andreas Greiner, Thomas Scheibel, Christian Laforsch: Shape, size, and polymer dependent effects of microplastics on Daphnia magna. In: Journal of Hazardous Materials, 426 (2022). - .
doi:10.1016/j.jhazmat.2021.128136

Sven Ritschar, Frederic Hüftlein, Lisa-Marie Schell, Julian Brehm, Christian Laforsch: Taking advantage of transparency : A proof-of-principle for the analysis of the uptake of labeled microplastic particles by organisms of different functional feeding guilds using an adapted CUBIC protocol. In: Science of the Total Environment, 832 (2022). - .
doi:10.1016/j.scitotenv.2022.154922

2021

Benjamin Trotter, Magdalena V. Wilde, Julian Brehm, Evdokia Dafni, Arlinda Aliu, Georg J. Arnold, Thomas Fröhlich, Christian Laforsch: Long-term exposure of Daphnia magna to polystyrene microplastic (PS-MP) leads to alterations of the proteome, morphology and life-history. In: Science of the Total Environment, 795 (2021). - .
doi:10.1016/j.scitotenv.2021.148822

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

M.Sc. Julian Brehm
PhD candidate

Chair Animal Ecology I
Building B13, Room 1.02
University of Bayreuth
Universitätsstr. 30
95440 Bayreuth
Germany

Telefon: +49 (0) 921 55 2433
Fax: +49 (0) 921 55 2784

E-mail: julian1.brehm@uni-bayreuth.de
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