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Ph.d.-defence: Transport and Transformation of N: N2O and NO3- as Indicators of Subsoil N Removal

During her PhD studies, Kari Wolf investigate the role of individual transport and transformation processes in the unsaturated zone and how they interact.

Portrait of Kari Anna Wolf, PhD defence
Kari Anna Wolf will defend her PhD Friday 8 October 2021.

In particular, Kari focused on the denitrification and transportation of N in arable landscapes from different perspectives, i.e., following the path of nitrogen used for crop production from field applications to looking critically at the quantification of drainage losses, and finally, an up-scaled assessment on the drivers of N losses to its destination in surface waters, and ultimately to the coastal waters. The new research findings contribute to the understanding of processes affecting the transport and transformation of N at field level, thus benefitting strategies to reduce leaching and methods to quantify N leaching as well as understanding factors controlling leaching on a regional scale. 

The PhD study was completed at Department of Agroecology, Faculty of Technical Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Friday, October 8, 2021 at 1:30 PM
The PhD defense will be held online. To receive a link to the event, please send an e-mail to Karina Rysholt Christensen; kch@agro.au.dk. 

Title of PhD thesis: N turnover and transport in arable landscapes

Contact information: Kari A. Wolf, e-mail: kari.wolf@agro.au.dk

Members of the assessment committee:

  • Associate Professor Sofia Delin, Department of Soil and Environment, Swedish University of Agricultural Sciences, Sweden
  • Professor Lars Stoumann Jensen, Section for Plant and Soil Science, University of Copenhagen, Denmark
  • Senior Scientist Chris Kjeldsen (chairman), Department of Agroecology, Aarhus University, Denmark

Main supervisor:

  • Senior Researcher Christen Duus Børgesen, Department of Agroecology, Aarhus University, Denmark


  • Professor Søren O. Petersen, Department of Agroecology, Aarhus University, Denmark
  • Senior Scientist Finn Plauborg, Department of Agroecology, Aarhus University, Denmark

Language: The PhD dissertation will be defended in English

The defense is public.

The PhD thesis is available for reading at the Graduate School of Technical Sciences/GSTS, Katrinebjergvej 89F, building 5132, 8200  Aarhus N.