Dr. Christoph Keuschnig


Research Interests

My primary interests lie in microbial contributions to biogeochemical processes of global environmental impact. My research during my PhD project on N2O related processes in soil environments led me further to investigate interactions between fungal and bacterial members of communities following the overall hypothesis, that there are mutualistic relationships in nitrogen cycling related processes so far overseen. Recent work also targeted methane cycling communities in subarctic tundra soils, as well as electroactive, anaerobic hydrocarbon degrading communities in petrol polluted soil sites. While soil environments were always present in my research I also gained experience in analyzing and interpreting other environments like snow, ice, air and sediments. In my hypothesis driven research, DNA and RNA based methods often build the methodical basis and both field studies as well as concise laboratory experiments are used to investigate specific questions. 

Curriculum Vitae

  • 2017 -2022: Postdoc at Ecole Centrale de Lyon / University of Lyon


  • 2016: PhD in Microbial Ecology, Ecole Centrale de Lyon / University of Lyon
  • 2014: Masters in Applied Plant Science, University of Natural Resources and Life Sciences Vienna
  • 2013: Masters in Biotechnology, University of Natural Resources and Life Sciences Vienna
  • 2009: Bachelors in Food and Biotechnology, University of Natural Resources and Life Sciences Vienna


Sanchez-Cid, C., Guironnet, A., Keuschnig, C., Wiest, L., Vulliet, E., Vogel, T.M. (2022): Gentamicin at sub-inhibitory concentrations selects for antibiotic resistance in the environment. In: ISME Communications, 2:29. doi.org/10.1038/s43705-022-00101-y

Keuschnig, C., Larose, C., Rudner, M., Pesqueda, A., Doleac, S., Elberling, B., Björk, R. G., Klemedtsson, L., & Björkman, M. P. (2022): Reduced methane emissions in former permafrost soils driven by vegetation and microbial changes following drainage. In: Global Change Biology, 00, 1–15. doi.org/10.1111/gcb.16137

Klarenberg, I.J., Keuschnig, C., Russi Colmenares, A.J., Warshan, D., Jungblut, A.D., Jónsdóttir, I.S. and Vilhelmsson, O. (2022): Long-term warming effects on the microbiome and nifH gene abundance of a common moss species in sub-Arctic tundra. In: New Phytologist. doi.org/10.1111/nph.17837

Feltracco, M, Barbaro, E, Hoppe, CJM., Wolf, KKE., Spolaor, A., Layton, R., Keuschnig, C., Barbante, C., Gambaro and A., Larose, C. (2021): Airborne bacteria and particulate chemistry capture Phytoplankton bloom dynamics in an Arctic fjord. In: Atmospheric Environment 256:118458. doi.org/10.1016/j.atmosenv.2021.118458

Keuschnig, C., Gorfer, M., Li, G., Mania, D., Frostegård, Å., Bakken, L., and Larose, C. (2020): NO and N2O transformations of diverse fungi in hypoxia: evidence for anaerobic respiration only in Fusarium strains. In: Environmental Microbiology 22: 2182–2195. doi:10.1111/1462-2920.14980

Klarenberg, I. J., Keuschnig, C., Warshan, D., Jónsdóttir, I. S. and Vilhelmsson, O. (2020): The Total and Active Bacterial Community of the Chlorolichen Cetraria islandica and Its Response to Long-Term Warming in Sub-Arctic Tundra. In: Frontiers in Microbiology. 11: 1–13 doi:10.3389/fmicb.2020.540404