Page path:

ICoN 9 Conference a great success

Jul 10, 2025

Six days of interesting talks, productive workshops, enriching coffee breaks and lots of science

ICoN9 group picture
The participants of ICoN9 (F. Aspetsberger/Max Planck Institute for Marine Microbiology)

A tear in one eye and a smile in the other, we look back at the ICoN9 conference. The Max Planck Institute for Marine Microbiology hosted the “International Conference on Nitrification and Related Processes” (ICoN) from June 22 to 27, 2025, in the city of Bremen in Northern Germany. ICoN is the premier conference on the nitrogen cycle that brings together academic, government, and industrial investigators to share insights and cutting-edge discoveries on the nitrogen cycle and its connection to other global processes.

“ICoN is a really important meeting for me and my colleagues and this one, ICoN9, was a wonderful scientific gathering for international nitrogen researchers.” Bess Ward, Princeton, USA

After the Early Career Researcher Workshop, the conference kicked off with an opening lecture from Jeanette Norton from the Utah State University, and the lifetime achievement lecture by Mike Jetten (Radboud University, The Netherlands), who has been instrumental in the discovery of many new nitrogen-cycling microorganisms.

This was followed by the U Bremen Research Alliance Workshop on Oceanic Nitrogen Cycling and four days of sessions on nitrogencycling in different environments, new research on the metabolism, physiology and biochemistry of the organisms in­volved in the nitrogen cycle and insights into new methods. Furthermore, the application of the nitrogen cycling microorganisms in industrial settings such as agriculture and wastewater treatment were presented and discussed, with an aim to solve issues such as nitrogen pollution and global warming.

On Friday after the end of the official conference, the Max Planck Institute for Marine Microbiology hosted another workshop on Biological Nitrification Inhibition. The conference’s scientific program was complemented by an excursion to the institute’s labs and workshops.

“IcoN9 has been truly unforgettable — from the outstanding quality of the presentations to the perfect balance between scientific content and space for social exchange. A fantastic experience from start to finish.” Michele Laureni, TU Delft, NL

“The ICoN conferences have been the cornerstone of global nitrification research since 2009. As with the other ICoN conferences, ICoN9 opened opportunities to many early career researchers to share their projects on the main stage, and provided them with precious networking space aimed at enhancing their ideas and growing interest in the field of nitrification research.” Lisa Stein, University of Alberta, CA

More than 200 participants from all over the world took part in the conference and helped to make it a big success. The were lively discussions during the sessions as well during the poster presentations. Many researchers took the opportunity to get in touch and exchange ideas and start new collaborations.

We thank all the participants, the organizers and the many helping hands to make the ICoN9 conference such an outstanding and enjoyable event! We are already looking forward to ICoN10, which will be hosted by Korea Advanced Institute of Science & Technology (KAIST) in Daejeon, South Korea in 2027.

“After a very successful ICoN9 here in Bremen, hosted by the Max Planck Institute for Marine Microbiology, I would like to thank all the attendees for making this a very exciting and vibrant ICoN! I am grateful to all my colleagues that helped make this possible, and our supporters, in particular Max Planck Institute for Marine Microbiology as well as German Research Foundation DFG, U Bremen Research Alliance, International Society for Microbial Ecology and PyroScience GmbH.”  Boran Kartal, MPIMM, DE

Further information

Group leader

Microbial Physiology Research Group

Dr. Boran Kartal

MPI for Marine Microbiology
Celsiusstr. 1
D-28359 Bremen
Germany

Room: 

3126

Phone: 

+49 421 2028-6450

Dr. Boran Kartal

ICoN9 – The Ninth International Conference on Nitrification and Related Processes

The ICoN meetings are the premier opportunity to showcase research on nitrification and related processes in the nitrogen cycle. ICoN conferences b...

more ...

Impressions from ICoN9 in Bremen

 ICoN9 (U. Tietjen/Max-Planck-Institute für Marine Mikrobiologie)
Conference bags and goodies at ICoN9 (U. Tietjen/Max-Planck-Institute für Marine Mikrobiologie)
The conference venue (F. Aspetsberger/Max-Planck-Institute für Marine Mikrobiologie)
ICoN9 (F. Aspetsberger/Max-Planck-Institute für Marine Mikrobiologie)
ICoN9 (N. Diekmann/U Bremen Research Alliance)
Coffee break (N. Diekmann/U Bremen Research Alliance)
ICoN9 (N. Diekmann/U Bremen Research Alliance)
Speakers of the U Bremen Research Alliance Workshop on Oceanic Nitrogen Cycling (N. Diekmann/U Bremen Research Alliance)
 ICoN9 (S. Krüger/Max-Planck-Institute für Marine Mikrobiologie)
Having a snack at ICoN9 (S. Krüger/Max-Planck-Institute für Marine Mikrobiologie)
 ICoN9 (U. Tietjen/Max-Planck-Institute für Marine Mikrobiologie)
Poster presentations at ICoN9 (U. Tietjen/Max-Planck-Institute für Marine Mikrobiologie)
Coffee break (U. Tietjen/Max-Planck-Institute für Marine Mikrobiologie)
ICoN9 (U. Tietjen/Max-Planck-Institute für Marine Mikrobiologie)
 ICoN9 (S. Krüger/Max-Planck-Institute für Marine Mikrobiologie)
Nice desserts (S. Krüger/Max-Planck-Institute für Marine Mikrobiologie)
ICoN9 (N. Diekmann/U Bremen Research Alliance)
During the ICoN9 conference (N. Diekmann/U Bremen Research Alliance)
Back to Top