|Phone: 0521 106 2810|
|Since Mai 2017||Doctoral student at the Department of Animal Ecology at Bielefeld University, Germany
Master thesis: "Effects of copper on life-history traits and lipid storage in Caenorhabditis elegans combining life-cycle experiments with coherent anti-Stokes Raman spectroscopy (CARS)
Friedrich Wilhelm Helweg Foundation Award in December 2017"
|2014-2017||Studies in Fundamental and Applied Ecology, University of Bielefeld, Germany
|October 2014||Bachelor thesis: “Plant carbon allocation in arbuscular mycorrhizas and roots in different mycotrophic plants”
|2011-2014||Studies in Environmental Sciences, University of Bielefeld, Germany|
From 1950 until 2015, humans worldwide produced so much plastic (in total 8.3 billion tonnes) that it corresponds to the weight of 822000 Eiffel towers and the annual production of 2015 is about 190 times higher than it was in 1950. We have generated 6.3 billion tonnes of plastic waste and only a proportion of 9% was recycled, 12% was burned and 79% was dumped or ended up in the environment.
The bulk of microscopic plastic fragments are “secondary” microplastics derived from the breakdown of larger plastic debris and therefore quite bioavailable for aquatic organisms because the bioavailability increases with smaller plastic fragments.
The aim of my PhD is to link the ecotoxicological approaches of two stressors with the trophic interactions in the food web of the profundal and littoral zone by focusing on the ingestion, fate and bioaccumulation potential of microplastics (anthropogenic stressor) and on the effects of an increased temperature (natural and anthropogenic stressor) on the fitness of meio- and macrofaunal organisms.
Fitness is assessed by the lipid storage capacity, the distribution and composition of lipid droplets. Alterations of lipid storage and therefore effects on the fitness can be caused by insufficient food availability, by accumulating plastic fragments and by a higher energy demand through detoxification pathways or enhanced immune responses.
Life-cycle experiments, fluorescence microscopy and label-free CARS microscopy (coherent anti-Stokes Raman scattering; in collaboration with the working group Biomolecular Photonics of the Faculty of Physics of the Bielefeld University) were applied for investigating the effects of temperature and the detection and quantification of microplastic fragments and lipids.
Fueser, H.; Majdi, N.; Haegerbaeumer, A.; Pilger, C.; Hachmeister, H.; Greife, P.; Huser, T. & Traunspurger, W. (2018): Analyzing life-history traits and lipid storage using CARS microscopy for assessing effects of copper on the fitness of Caenorhabditis elegans. In: Ecotoxicology and Envisonmental Safety 156, p. 255-262. DOI 10.1016/j.ecoenv.2018.03.037
Füser, Hendrik; Majdi, Nabil; Hachmeister, Henning; Pilger; Huser, Thomas & Traunspurger, W.: Perspectives of coherent anti-Stokes Raman scattering microscopy (CARS): imaging and assessing fatty acid content of microscopic biological samples. Poster, 110th Annual Meeting of the German Zoological Society (DZG), 12th - 15th September 2017, Bielefeld, Germany.
Füser, Hendrik; Majdi, Nabil; Hachmeister, Henning; Pilger; Huser, Thomas & Traunspurger, W.: Perspectives of coherent anti-Stokes Raman scattering microscopy (CARS): imaging and assessing fatty acid content of microscopic biological samples. Poster, 10th Symposium for European Freshwater Science 2017, 2th - 7th July 2017, Olomouc, Czech Republic.