Dissolved and particulate organic carbon (DOM, POM) are key components of the global C cycle and important as potential sources of CO2, and for the long-term preservation of carbon stabilized in subsoils and sediments. DOM and POM are key sources of energy for microbial metabolism within terrestrial ecosystems, the aquatic continuum, and ultimately the ocean. Despite recent evidence showing this lateral transport of carbon is linked to anthropogenic perturbations, efforts to integrate DOM and POM fluxes across the terrestrial-aquatic continuum are just emerging. A comprehensive understanding of the dynamics of DOM and POM in terrestrial and aquatic ecosystems remains challenging due to complex interactions of biogeochemical and hydrological processes at different scales, i.e. from the molecular to the landscape scale.
This session aims to improve our understanding of organic matter processing at the interface of terrestrial and aquatic ecosystems. We solicit contributions dealing with amounts, composition, reactivity and fate of DOM and POM and its constituents (i.e. C, N, P, S) in soils, lakes, rivers and the coastal ocean as well as the impact of land use change and climatic change on these processes. For example, it is important to recognize the key role of peatlands as sources of organic matter for many streams and rivers as well as soil erosion induced lateral fluxes of sediment and carbon at the catchment scale when assessing C dynamics across the terrestrial-aquatic continuum. Therefore, we aim to bring together scientists from various backgrounds, but all devoted to the study of dissolved and/or particulate organic matter using a broad spectrum of methodological approaches (e.g. molecular, spectroscopic, isotopic, 14C, other tracers, and modeling).

Co-organized as BG2.42/HS11.1
Convener: Karsten Kalbitz | Co-conveners: Nuria Catalan Garcia, Dolly Kothawala, Filip Oulehle
| Tue, 09 Apr, 08:30–10:15, 10:45–12:30
Room -2.20
| Attendance Tue, 09 Apr, 14:00–15:45
Hall X1

Tuesday, 9 April 2019 | Room -2.20

Chairperson: Karsten Kalbitz, Núria Catalan
08:30–08:45 |
| solicited
Kimberly Wickland
08:45–09:00 |
Katharina Lehmann, Robert Lehmann, and Kai Uwe Totsche
09:00–09:15 |
Ruth Ellerbrock, Detlef Deumlich, Dominique Niessner, and Horst H. Gerke
09:30–09:45 |
Jakob Schelker, Florian Caillon, Astrid Harjung, Peter Peduzzi, and Katharina Besemer
09:45–10:00 |
Katrin Attermeyer, Sara Andersson, Karolina Einarsdottir, Marloes Groeneveld, Anna Székely, and Lars Tranvik
10:00–10:15 |
Mahdi Nakhavali, Ronny Lauerwald, Sarah Chadburn, Anna Harper, Pierre Regnier, and Pierre Friedlingstein
Coffee break
Chairperson: Dolly Kothawala
10:45–11:00 |
| Highlight
Hjalmar Laudon, Marcus B Wallin, Kevin Bishop, and Ryan A Sponseller
11:00–11:15 |
Sara Trojahn, Juliane Bischoff, Thomas Wagner, Bryan M. Spears, and Ryan Pereira
11:15–11:30 |
Danielle Alderson, Martin Evans, James Rothwell, Stephen Boult, and Edward Rhodes
11:30–11:45 |
Maximilian Peter Lau, Hans-Peter Grossart, and Paul del Giorgio
11:45–12:00 |
Alysha I. Coppola, Daniel Viviroli, Michael Seidel, Negar Haghipour, Gabriela S. Nascimento, Brandi Revelles, Matthew Jones, Jeffery E. Richey, Nicholas D. Ward, Michael W.I. Schmidt, Timothy I. Eglinton, Thorsten Dittmar, and Samuel Abiven
12:00–12:15 |
| presentation
Yong Ran, Dainan Zhang, Shujie Hu, Yu Yang, and Jingdong Mao
12:15–12:30 |
Clément Fabre, Sabine Sauvage, Jean-Luc Probst, Jérémy Guilhen, and José Miguel Sánchez Pérez