Speaker: Prof Caroline P. Slomp, Radboud University, Nijmegen, Netherlands

The seminar is open to the public. To join online, please contact seminars@cluttereawag.ch for access details.

Abstract
Coastal environments account for a major proportion of marine methane emissions to the atmosphere. Eutrophication and deoxygenation of coastal waters could greatly enhance this methane release. In this talk, I will present results of our recent fieldwork in a range of coastal systems (e.g. Baltic Sea, Dutch coastal zone) where we assessed how variations in organic matter input and water column redox conditions impact methane dynamics. In my talk, I will specifically focus on (1) novel chemical and microbial pathways of removal of methane, (2) the role of ebullition in enhancing methane emissions and (3) the use of reactive transport modeling to elucidate key controls on the microbial methane filter. Overall, our work highlights that, with ongoing eutrophication, deoxygenation and climate change, methane emissions from coastal systems will likely greatly increase in future.