University of Bremen

60 University of Bremen - Team https://www.uni-bremen.de/en/roggatz/team-1 Team of the dynmaic ecologial chemistry group of Dr. Christina Roggatz en University of Bremen Thu, 16 Apr 2026 05:00:23 +0200 Thu, 16 Apr 2026 05:00:23 +0200 University of Bremen content-719562 Thu, 02 Apr 2026 10:54:23 +0200 The Dynamic Ecological Chemistry Team https://www.uni-bremen.de/en/roggatz/team-1#c719562 Content content-719566 Thu, 09 Apr 2026 12:52:17 +0200 Dr. Christina C. Roggatz https://www.uni-bremen.de/en/roggatz/team-1#c719566 I am fascinated by how environmental factors dynamically alter the chemical communication and interactions between species. Whether it’s chemical analysis, computational chemistry, or biological growth and behavioral tests - methodologically, my team and I utilize everything that provides us with comprehensive answers across different spatial and temporal scales. As a trained (marine) biologist with a Ph.D. in chemistry, I prefer to work in an interdisciplinary and cross-disciplinary manner. Projects: DIALMOD, CONCENTRATE, Biofilm-MRT E-Mail: croggatz@uni-bremen.de Telephone: 0421/218 56659 Content content-719568 Thu, 09 Apr 2026 12:53:21 +0200 Lena Kathrin Keller https://www.uni-bremen.de/en/roggatz/team-1#c719568 I support the working group in my role as a technical assistant. My responsibilities include culturing benthic diatoms, preparing samples for 16S sequencing, and ensuring laboratory hygiene and safety. Project: DIALMOD E-Mail: klena@uni-bremen.de Telephone: 0421/ 218 63084 Content content-719572 Thu, 09 Apr 2026 12:55:59 +0200 Janina Barkowsky https://www.uni-bremen.de/en/roggatz/team-1#c719572 I began my doctoral thesis in mid-February 2026. I am particularly interested in the fluctuating environmental conditions in benthic diatom biofilms and how these conditions affect sugar-degrading enzymes. Project: CONCENTRATE E-Mail: jbarkows@uni-bremen.de Content content-719575 Thu, 09 Apr 2026 12:56:35 +0200 Jonas Fischer https://www.uni-bremen.de/en/roggatz/team-1#c719575 As a soil ecotoxicologist, I study the interactions between anthropogenic pollutants (e.g., pesticides) and the soil matrix, and how these interactions can negatively affect soil organisms, including through the formation of free radicals or mixture-toxic effects. Project: ROSCAR E-Mail: j.fischer@uni-bremen.de Telephone: 0421/218-56653 Content content-719563 Thu, 02 Apr 2026 10:54:53 +0200 Location https://www.uni-bremen.de/en/roggatz/team-1#c719563 BIOM 3rd Floor James-Watt-Str.1 28359 Bremen Content content-719570 Thu, 09 Apr 2026 12:54:00 +0200 Celine Tennagen https://www.uni-bremen.de/en/roggatz/team-1#c719570 Project: DIALMOD E-Mail: ce_te@uni-bremen.de Content content-719569 Thu, 09 Apr 2026 12:53:38 +0200 Anja Ruhl https://www.uni-bremen.de/en/roggatz/team-1#c719569 As part of the DIALMOD project, I am investigating the interactions between benthic diatoms and the bacteria associated with them in biofilms. My focus is on characterizing the biofilms and identifying the substances exchanged during these interactions. A central aspect of this research is how the effects of these substances are influenced by fluctuating environmental factors such as pH. Project: DIALMOD E-Mail: aruhl@uni-bremen.de Telephone: 0421/218 56659 Content content-719573 Thu, 09 Apr 2026 12:56:16 +0200 Henrike Welpinghus https://www.uni-bremen.de/en/roggatz/team-1#c719573 As the Outreach and Participation Coordinator for TRR 420 CONCENTRATE, I develop programs that make research on the marine carbon cycle accessible and engaging. I also serve as the point of contact for communication-related inquiries regarding the Collaborative Research Center. Project: CONCENTRATE E-Mail: hwelpinghus@marum.de Telephone: 0421 218-65688 Content content-719576 Thu, 09 Apr 2026 12:56:54 +0200 Sara Sophie Coordes https://www.uni-bremen.de/en/roggatz/team-1#c719576 As part of the ROSCAR project, I have been investigating the effects of abiotic and biotic environmental parameters on copper-induced ROS formation in soil since September 2025. I conduct soil chemistry research and use ecotoxicological test systems to study the growth, reproduction, and behavior of soil organisms. Project: ROSCAR E-Mail: scoordes@uni-bremen.de Telephone:&nbsp;0421/ 218 56659 Content