Dear colleagues, At the next EGU General Assembly, Vienna 23-28 April 2017, we will organize again a special session on Nitrogen cycling which we hope will be of interest to you. The session is entitled “*Nitrogen-transformation processes in terrestrial and aquatic ecosystems: advances in pathways-tracing, quantification and process-based modelling”*. Last year we had a day of more than 40 interesting talks and posters covering different aspects of Nitrogen cycling and are looking forward to continue this year. Please feel free to distribute this message to potentially interested colleagues and co-workers. Abstract deadline is 11 January 2017. Sorry for any cross-posting. We are looking forward to meeting you in Vienna.
Best regards, Sari Juutinen, Kristina Kleineidam, Jan Reent Köster, Christoph Müller, Julie Talbot, Reinhard Well, Tuula Larmola *BG1.10 Nitrogen-transformation processes in terrestrial and aquatic ecosystems: advances in pathways-tracing, quantification and process-based modelling* Convener: Tuula Larmola, Co-Conveners: Sari Juutinen, Kristina Kleineidam, Jan Reent Köster, Reinhard Well, Christoph Müller, Julie Talbot Abstract submission <http://meetingorganizer.copernicus.org/EGU2017/abstractsubmission/23584> Anthropogenic disturbance of the nitrogen (N) cycle has more than doubled the amount of reactive N circulating in the biosphere. This session seeks to improve our understanding on how various microbial processes contribute to N cycling in terrestrial and aquatic ecosystems, how global changes impact ecosystem N biogeochemistry and what feedbacks from N cycling will be most important in influencing the climate. The presentations will cover all aspects of ecosystem N cycling, especially methodological advances in measuring and modelling of microbial N-transformation processes such as denitrification, nitrification, co-denitrification, nitrifier-denitrification, nitrate ammonification (DNRA) or anerobic ammonia oxidation (ANAMMOX), as well as their contributions to exchange of gaseous N species (N2, N2O emissions) under field-like conditions. The session will also highlight innovative isotopic, molecular and modelling methods on N cycling communities and processes at various scales, interactions with other element cycles (e.g., carbon, phosphorus), terrestrial-aquatic linkages, and feedbacks to global change.
