Conference Contributions
All conference contributions regarding the research unit
Invited Talks
2026
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Smalla, K. Plasmid-mediated dissemination of antimicrobial resistance – the environmental perspective Talk at International Symposium on Plasmid Biology, September 2026, Berlin, Germany.*
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Gallego, S., Pulami, D., Soufi, L., Axtmann, K., Lüneberg, K., Heyde, B. J., Babin, D., Siebe, C., Siemens, J., Bierbaum, G., Grohmann, E., Glaeser, S. P., Smalla, K. Does wastewater irrigation promote the transfer of antibiotic resistance genes in soil, cilantro rhizosphere, and phyllosphere? Poster presented at International Society for Plasmid Biology (ISPB) Conference, September 2026, Berlin, Germany.
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Smalla, K. Studying the role of plasmids for antimicrobial resistance gene dissemination: challenges and limitation of different methods, Talk at Environmental Dimension of Antimicrobial Resistance (EDAR) Conference, August 2026, Brisbane, Australia.*
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Gallego, S., Soufi, L., Kampouris, I. D., Lüneberg, K., Heyde, B. J., Babin, D., Siebe, C., Siemens, J., Grohmann, E., Smalla, K. From field to fork: Wastewater increases antibiotic resistance genes and mobile genetic elements, modifying bacterial communities in soil and cilantro. Poster presented at Environmental Dimension of Antibiotic Resistance (EDAR) Conference, August 2026, Brisbane, Australia.
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Heyde, B.J., Lüneberg, K., Siebe, C., Mulder, I., Siemens, J. Fate and mobilization of micropollutants during transition from untreated to treated wastewater irrigation of soils. Talk at 14th IWA Micropol. Ecohazard Conference, June 2026, Toronto, Canada.
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Böckmann, M., Axtmann, K., Bierbaum, G., Zarfl, C. Pulsed antibiotic inputs into the environment may foster the spread of antimicrobial resistance. Talk at SETAC Europe Annual Meeting Maastricht, May 2026, Maastricht, The Netherlands.
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Smalla, K. Effekte organischer Dünger und von Beregnungswasser auf das Vorkommen übertragbare Antibiotikaresistenzen im Pflanzenmikrobiom, Online talk at vBio (Faszination Biologie), 2026.*
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Smalla K. Effekte organischer Dünger und von Beregnungswasser auf das Vorkommen übertragbare Antibiotikaresistenzen im Pflanzenmikrobiom, Fortbildung Krankenhaushygiene & MRE, 13.5.2026 Dresden.*
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Soufi, L., Gallego, S., Heyde, B.J., Lüneberg, K., Kampouris, I., Siemens, J., Siebe, C., Smalla, K., Grohmann, E. Irrigation water quality and soil type shape antibiotic resistance gene (ARG) and mobile genetic element (MGE) profiles and bacterial community composition in soil–plant systems. Poster presented at Annual Conference of the Association for General and Applied Microbiology (VAAM), March 2026, Berlin, Germany.
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Gallego, S., Soufi, L., Kampouris, I. D., Lüneberg, K., Heyde, B. J., Babin, D., Siebe, C., Siemens, J., Grohmann, E., Smalla, K. From Field to Fork: Wastewater irrigation promotes Antibiotic Resistance Genes (ARGs), Mobile Genetic Elements (MGEs), and modifies Bacterial Communities in Soil, Cilantro Rhizosphere, and Phyllosphere. Talk at Annual Conference of the Association for General and Applied Microbiology (VAAM), March 2026, Berlin, Germany.
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Smalla, K. Environmental dimension of antibiotic resistances: plasmids as major connectors between human, animal and environmental bacteria. Seminar Medical Faculty University of Buenos Aires, 2026.*
2025
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Smalla, K. Rolle der Antibiotika und ihre Wirkung auf das Mikrobiom und damit die menschliche Gesundheit. Tagung Faszination Mikrobiom: Wie Bodengesundheit und menschliche Gesundheit zusammenhängen, Kommission Bodenschutz des Umweltbundesamtes, December 2025, Germany.*
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Smalla, K. How do soil and plant associated bacteria respond to changing environmental conditions? Seminar Chinese Academy of Science Beijing, 31.10.2025*
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Siemens, J. Abwasser und Gülle als (Bio)Ressourcen für die landwirtschaftliche Produktion – Risiken durch Arzneimittel. Bergische Universität Wuppertal, 27 November 2025, Wuppertal, Germany.*
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Gallego, S., Soufi, L., Kampouris, I., Lüneberg, K., Heyde, B.J, Siebe, C., Siemens, J., Grohmann, E., Smalla, K. Effects of irrigation water quality on soil and plant-associated bacterial communities, antibiotic resistance gene and mobile genetic element profiles, Talk at 3rd International Symposium on Soil Microme and Soil Health, Yangling, 20-22.10.2025*
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Gallego, S., Soufi, L., Kampouris, I., Lüneberg, K., Heyde, B.J., Siebe, C., Siemens, J., Grohmann, E., Smalla, K. Soil type and wastewater contaminants drive Antibiotic Resistance Genes (ARGs), Mobile Genetic Elements (MGEs), and bacterial communities in soil and plants. Talk at International Workshop on Environmental Risk and Control of Emerging Contaminants, October 2025, Hangzhou, China.*
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Grohmann, E., Soufi L., Gallego, S., Smalla, K., Lüneberg, K., Siebe, C., Heyde, B.J., Siemens, J. Changing irrigation water quality affects the soil resistome and mobilome. Talk at Bacterial Genetics and Ecology Meeting (BAGECO-17), July 2025, Graz, Austria.*
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Smalla, K., Hauschild, K., Wolters, B., Shintani, M., Kampouris, I., Soufi, L., Grohmann, E., Siemens, J., Siebe, C., Lüneberg, K., Gallego, S. The contribution of organic fertilizers and irrigation water to the burden of antibiotic resistance genes and plasmids in soil and plant microbiomes. Talk at Bacterial Genetics and Ecology Meeting (BAGECO-17), July 2025 Graz, Austria*
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Gallego, S., Soufi, L., Kampouris, I., Lüneberg, K., Heyde, B.J., Siebe, C., Siemens, J., Grohmann, E., Smalla, K. Wastewater-borne pollutants affected the soil resistome and mobilome and shaped the microbial community composition in the cilantro rhizosphere. Poster presented at Bacterial Genomics and Ecology Meeting (BAGECO) Conference, July 2025, Graz, Austria.
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Glaeser, S.P, Pulami, D., Axtmann, K., Soufi, L., Gallego, S., Lüneberg, K., Bierbaum, G., Grohmann, E., Smalla, K., Siebe, C., Siemens, J. Leaves of alfalfa and cilantro plants from Mexican fields irrigated with different water qualities are colonized by antibiotic-resistant E. coli and enterococci. Poster presented at Bacterial Genomics and Ecology Meeting (BAGECO) Conference, July 2025, Graz, Austria.
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Gallego, S., Smalla, K. ONE Health Antimicrobial Resistance – the role of the agroecosystem. Seminar, Medical Faculty, University of Buenos Aires, March 2025, Argentina.*
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Gallego, S., Soufi, L., Kampouris, I., Lüneberg, K., Heyde, B.J., Siebe, C., Siemens, J., Grohmann. E., Smalla, K. Wastewater-borne pollutants affected the soil resistome, mobilome and rhizosphere microbial community composition in monolithic soil columns planted with cilantro. Poster presented at Annual Conference of the Association for General and Applied Microbiology (VAAM) Conference, March 2025, Bochum, Germany.
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Pulami, D., Smalla, K., Gallego, S., Axtmann, K., Bierbaum, G., Soufi, L., Grohmann, E., Lüneberg, K., Siebe, C., Heyde, B., Mulder. I., Siemens, J., Glaeser, S.P. Antimicrobial-resistant Escherichia coli in irrigation water of different quality, and leaves of irrigated cilantro and alfalfa plants from the Mezquital Valley, Mexico. Talk at Annual Conference of the Association for General and Applied Microbiology (VAAM) Conference, March 2025, Bochum, Germany.
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Mulder, I. Fate and effects of disinfectants in soils. IESW-Seminar, Institute of Earth System Sciences, Leibniz Universität Hannover, January 2025, Germany.*
2024
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Gallego, S., Smalla, K. ONE Health Antimicrobial Resistance – the role of the agroecosystem. Colloquium, Chinese Agricultural University, November 2024, Beijing, China.
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Gallego, S., Smalla, K. ONE Health Antimicrobial Resistance – the role of the environment. JPIAMR Early Career Workshop, November 2024, Berlin, Germany.
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Gallego, S., Smalla, K. The transferable resistome of biosolid bacteria captured in E. coli. 2nd Soil Microbiome Symposium, October 2024, Yangling, China.
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Gallego, S., Smalla, K. The transferable resistome of biosolid bacteria captured in E. coli influenced by the size of the wastewater treatment plant? Talk at Annual Microbial Ecology Meeting, October 2024, Qingdao, China.
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Grohmann, E., Soufi, L., Gallego, S., Kampouris, I., Heyde, B.J, Siemens, J., Lüneberg, K., Siebe, C., Smalla, K. Antibiotic Resistance Gene Abundance and Transfer in Wastewater-Irrigated Soils. Sustainable Urban Water Management for Fast Growing Cities Conference, October 2024, Hyderabad, India (online).*
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Gallego, S., Smalla, K. ONE Health – Effekte organischer Dünger und von Beregnungswasser auf das Vorkommen übertragbarer Antibiotikaresistenzen im Pflanzenmikrobiom. Talk at Infektions- und Hygiene Kongress Freiburg, October 2024, Germany.
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Mulder, I. Fate and effects of disinfectants in soils. Seminar Talk, Münster, Institute of Landscape Ecology, October 2024, Germany.*
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Heyde, B.J, Axtmann, K., Braun, M., Böckmann, M., Gallego, S., Hahn, N., Lüneberg, .K, Soufi, L., Amelung, W., Bierbaum, G., Glaeser, S., Grohmann, E., Mulder, I., Pulami, D., Smalla, K., Zarfl, C., Siebe, S., Siemens, J. Umstellung von unbehandeltem auf behandeltes Abwasser zur landwirtschaftlichen Bewässerung: Auswirkungen auf Antibiotika, Metalle und Nährstoffe im Boden. Talk at Umwelt 2024 – Jahrestagung der SETAC-GLB, September 2024, Gießen, Germany.
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Gallego, S., Soufi, L., Kampouris, I., Lüneberg, K., Heyde, B., Siebe, C., Siemens, J., Grohmann, E., Smalla, K. Health risks from irrigating crops with wastewater containing micropollutants and bacteria carrying transferable antibiotic resistances. Talk at Umwelt 2024 – Jahrestagung der SETAC-GLB Conference, September 2024, Gießen, Germany.*
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Böckmann, M., Axtmann, K., Bierbaum, G., Zarfl, C. Periodische Antibiotikaemissionen begünstigen die Selektion resistenter Bakterien. Talk at Umwelt 2024 – Jahrestagung der SETAC-GLB, September 2024, Gießen, Germany.
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Soufi, L., Gallego, S., Kampouris, I., Werner, K., Lüneberg, K., Schakowski, J., Heyde, B.J., Siemens, J., Siebe, C., Smalla, K., Grohmann, E. Impact of Wastewater Irrigation on Antibiotic Resistance Genes in Mezquital Valley Soils. Poster presented at Umwelt 2024 – Jahrestagung der SETAC-GLB, September 2024, Gießen, Germany.
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Axtmann, K., Brinkmann, S., Siskowski, A., Heyde, B., Braun, M., Siemens, J., Bierbaum, G. Bodenkolloide beeinflussen den selektiven Effekt von Antibiotika auf bakterielles Wachstum. Talk at Umwelt 2014 - Jahrestagung der SETAC-GLB, September 2024, Gießen, Germany.
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Pulami, D., Aryal, D., Isack, P., Heyde, B., Siebe, C., Siemens, J., Kämpfer, P., Glaeser, S.P. Cultivation-based quantification of antimicrobial-resistant heterotrophic bacteria upon changing irrigation from untreated wastewater to treated wastewater in soils with different clay contents. Poster. Talk at Umwelt 2014 - Jahrestagung der SETAC-GLB, September 2024, Gießen, Germany.
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Gallego, S., Smalla K. Insight from studying the ecology of plasmids for more than three decades. Seminar, Shizuoka University, September 2024, Japan.
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Gallego, S, Smalla, K. The transferable resistome of biosolid bacteria influenced by the size of the wastewater treatment plant? Talk at International Symposium on Plasmid Biology, September 2024, Hamamatsu, Japan.
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Gallego, S., Soufi, L., Kampouris, I., Heyde, B., Lüneberg, K., Pulami, D., Glaeser, S., Siebe C., Siemens, J., Grohmann, E., Smalla, K. Wastewater-borne pollutants affected the soil resistome and mobilome but not the overall microbial community composition. Poster presented at International Society of Microbial Ecology (ISME) Conference, August 2024, Capetown, South Africa.
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Soufi, L., Gallego, S., Kampouris, I., Werner, K., Lüneberg, K., Schakowski, J., Heyde, B.J., Siemens, J., Siebe, C., Smalla, K., Grohmann, E. Impact of Untreated and Treated Wastewater Irrigation on Antibiotic Resistance Genes and Mobile Genetic Elements in Three Different Soil Types. Poster presented at 7th Joint Conference “Joint Microbiology & Infection Conference” of the DGHM and VAAM, June 2024, Würzburg, Germany.
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Pulami, D., Aryal, D., Isack, P., Heyde, B., Siebe, C., Siemens, J., Kämpfer, P., Glaeser, S.P. Cultivation-based quantification of antimicrobial-resistant heterotrophic bacteria upon changing irrigation from untreated wastewater to treated wastewater in soils with different clay contents. Poster presented at 7th Joint Conference “Joint Microbiology & Infection Conference” of the DGHM and VAAM, June 2024, Würzburg, Germany.
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Siemens, J., Heyde, B., Lüneberg, K., Hahn, N., Axtmann, K., Soufi, L., Böckmann, M., Braun, M., Amelung, W., Bierbaum, G., Gallego, S., Glaeser, S., Grohmann, E., Mulder, I., Smalla, K., Zarfl, C., Siebe, C. Replacing untreated with treated wastewater for irrigation: Consequences for antibiotics, metals and nutrients in soils. Talk at 7th Environmental Dimension of Antimicrobial Resistance Conference (EDAR), May 2024, Montreal, Canada.
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Gallego, S., Soufi, L., Kampouris, I., Lüneberg, K., Heyde, B., Siebe, C., Siemens, J., Grohmann, E., Smalla, K. Wastewater-borne pollutants affected the soil resistome and mobilome but not the overall microbial community composition. Poster presented at 7th Environmental Dimension of Antimicrobial Resistance Conference (EDAR), May 2024, Montreal, Canada.
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Soufi, L., Gallego, S., Werner, K., Lüneberg, K., Schakowski, J., Vu, V.Q., Michaelis, C., Heyde, B.J., Siemens, J., Siebe, C., Smalla, K., Grohmann, E. Antibiotic Resistance Gene Abundance and Transfer in Wastewater-Irrigated Soils. Poster presented at 7th Environmental Dimension of Antimicrobial Resistance Conference (EDAR), May 2024, Montreal, Canada.
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Axtmann, K., Brinkmann, S., Siskowski, A., Heyde, B., Braun, M., Siemens, J., Bierbaum, G. Soil colloids affect the selective effect of different antibiotics on bacterial growth. Flash talk and poster at 7th Environmental Dimension of Antimicrobial Resistance Conference (EDAR), May 2024, Montreal, Canada.
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Mulder, I., Heyde, B., Glaeser, S., Jansen, K., Lennartz, S., Siemens, J. Fate of Quaternary Alkylammonium Compound – disinfectants in soils. Seminar talk, Soil and Crop Science Department, Texas A&M University, February 2024, USA.*
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Heyde, B.J. Does Wastewater Treatment Really Improve Irrigation for Agricultural Use Compared to Untreated Wastewater? Seminar talk, Soil and Crop Science Department, Texas A&M University, February 2024, USA.*
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Soufi, L., Gallego, S., Werner, K., Schakowski, J., Heyde, B.J., Siemens, J., Smalla, K., Grohmann, E. Occurrence of antibiotic resistance genes and mobile genetic elements in Gram-positive bacteria in three different soils irrigated with treated or untreated wastewater. Poster presented at One Health and Antimicrobial Resistance: Role of Antibiotics, Antimicrobial Peptides and Biocides, January 2024, BAM Berlin, Germany.
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Mulder, I. Verbleib und Effekte von Quartären Alkylammonium-Desinfektionsmitteln in Böden. Kolloquium Boden-Wasser-Luft, January 2024, Universität Freiburg, Germany.*
2023
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Gallego, S., Smalla, K. ONE Health Antimicrobial Resistance – the role of the agro-ecosystem. Seminar talk, Universität Greifswald, November 2023, Germany.*
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Axtmann, K. Vorteile und Risiken von Abwasserbewässerung. Seminar talk, Hochschule Osnabrück, October 2023, Germany.*
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Axtmann, K., Schuster, D., Holstein, N., Felder, C., Voigt, A., Färber, H., Ciorba, P., Szekat, C., Schallenberg, A., Böckmann, M., Zarfl, C., Neidhöfer, C., Smalla, K., Exner, M., Bierbaum G. Antibiotic concentrations in raw hospital wastewater surpass minimal selective and minimal inhibitory concentrations of resistant Acinetobacter baylyi strains. Poster presented at DGHM Annual Conference, September 2023, Lübeck, Germany.
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Gallego, S., Smalla, K. ONE Health Antimicrobial Resistance – the role of the agroecosystem. Talk at VAAM Annual Conference, September 2023, Göttingen, Germany.
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Soufi, L., Gallego, S., Werner, K., Schakowski, J., Heyde, B.J., Siemens, J., Smalla, K., Grohmann, E. Soil type and irrigation water quality influence the variety and abundance of antibiotic resistance genes and mobile genetic elements in Gram-positive soil bacteria. Poster presented at VAAM Annual Conference, September 2023, Göttingen, Germany.
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Heyde, B.J, Hahn, N, Zernovnikov,, P, Elmossallamy D., Lüneberg, K., Siebe, C., Siemens, J. Ist geklärtes Abwasser wirklich besser zur Bewässerung landwirtschaftlicher Flächen geeignet als unbehandeltes Abwasser? Talk at Conference of the German Soil Science Society, September 2023, Halle a.d. Saale, Germany.
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Mulder, I. Verbleib und Effekte von Quartären Alkylammonium- Desinfektionsmitteln in Böden, Niedersächsisches Landesamt für Gesundheit, talk in NLGA-Aufbaukurs für hygienebeauftragte Ärzte*innen, 13. -14. April 2023*
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Böckmann, M., Siemens, J., Heyde, B.J., Zarlf, C. Identification of dissipation pathways for pharmaceuticals in natural soils – A modelling approach. Talk at 18th International Conference on Chemistry and the Environment, June 2023, Venice, Italy.
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Gallego, S., Soufi, L., Heyde, B., Siemens, J., Grohmann, E., Smalla, K. Antibiotic resistance genes and mobile genetic elements in three different soils irrigated with untreated or treated wastewater. Poster presented at Bacterial Genetics and Ecology (BAGECO) Conference, June 2023, Copenhagen, Denmark.
2022
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Heyde, B.J, Siemens, J., Glaeser, S.P., Barthel, A., Anders, A., Bisping, L., Siebe, C., Mulder I. Desinfektionsmittel: Segen im Alltag – Fluch im Boden? Talk at Conference of the German Soil Science Society, September 2022, Trier, Germany.
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Böckmann, M., Siemens, J., Heyde, B.J., Zarfl, C. Modellbasierte Bestimmung gelöster und sorbierter Schadstoffkonzentrationen in Böden. Talk at Umwelt 2022, September 2022, Emden, Germany.
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Heyde, B.J., Mulder, I., Siebe, C., Siemens, J. Quaternary alkylammonium disinfectants in soils. Poster presented at World Congress of Soil Science, August 2022, Glasgow, Scotland.
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Heyde, B.J., Amelung, W., Braun, M., Mulder, I., Bierbaum, G., Grohmann, E., Jechalke, S., Smalla, K., Glaeser, S.P, Zarfl, C., Siebe, C., Siemens, J. Pollutant – Antibiotic Resistance – Pathogen Interactions in a Changing Wastewater Irrigation System. Poster presented at 6th Environmental Dimension of Antimicrobial Resistance Conference (EDAR), June 2022, Göteborg, Sweden.
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Axtmann, K., Schuster, D., Holstein, N., Felder, C., Voigt, A., Färber, H., Ciorba, P., Szekat, C., Schallenberg, A., Böckmann, M., Zarfl, C., Neidhöfer, C., Smalla, K., Exner, M., Bierbaum G. Antibiotic concentrations in raw hospital wastewater surpass minimal selective and minimal inhibitory concentrations of resistant Acinetobacter baylyi strains. Poster 6th Environmental Dimension of Antimicrobial Resistance Conference (EDAR), June 2022, Göteborg, Sweden.