Please note that this session was withdrawn and is no longer available in the respective programme. This withdrawal might have been the result of a merge with another session.
ITS3.20/BG1.17 | Dissolved organic matter: molecules, microbes and global cycles
Dissolved organic matter: molecules, microbes and global cycles
Convener: Jutta Niggemann | Co-conveners: Sinikka LennartzECSECS, Hannelore Waska
The biogeochemistry of dissolved organic matter (DOM) involves a wide range of temporal and spatial scales. In this context, biosynthetic production of molecules is a fast process - as is the instant turnover of freshly produced DOM by microorganisms. Likewise, photodegradation happens on time-scale of milliseconds and other physico-chemical processes such as absorption to particles or coagulation are also spontaneous reactions. All these fast processes act on small molecular and microbial scales, while the largest fraction of DOM resides in the deep ocean for millennia, crossing ocean basins. Fast and slow processes on small and global scales are inherently connected and it is crucial to understand the mechanisms regulating these processes and their interlinkage to predict future changes in the bulk of this significant global carbon reservoir.
This session will bring together organic biogeochemists, microbial ecologists, oceanographers, limnologists, modellers and all other scientists who are interested in advancing the progress in DOM biogeochemistry. We welcome contributions from laboratory, field and modelling studies, and particularly encourage submissions of combined approaches. The session aims to cover the different temporal and spatial scales of DOM biogeochemistry, ranging from studies that focus on specific individual processes and environments to studies that integrate multiple processes and scale-up to global cycles.