Silicon (Si) is crucial in numerous biochemical and geochemical processes. Earlier scientific literature on Si cycling focused on abiotic weathering processes, while in recent years, scientists have become more aware of the significant role of biotic controls. Silicon plays a key role in processes governing soil formation and soil-plant feedback interactions. Vegetation, soil organisms, including fauna, microorganisms and fungi, strongly affect Si dynamic in terrestrial ecosystems but the mechanisms are still poorly understood. In particular, Si has numerous beneficial effects on both plant structure, function as well as resilience to biotic and abiotic stresses motivating studies focusing on Si functional ecology and silica biomineralization. The global Si cycle is receiving increased attention because of its links with the carbon cycle as well as other major biogeochemical cycles and toxic elements. A better understanding of the terrestrial Si cycle is thus critical, especially as drastic and subtle changes in the terrestrial Si cycle are occurring worldwide in response to global change.
This session aims at compiling recent work focusing on biogeochemical Si cycling under global change, its functions in terrestrial ecosystems as well as its evolution in the recent past. This session bridges advances from soil sciences, ecology, plant physiology, agronomy, biogeochemistry (including isotopes studies) and paleontology. We invite studies tackling biotic and abiotic interactions at different time and spatial scales affecting the Si cycle and its interactions with other biogeochemical cycles. We encourage interdisciplinary studies as well as contributions from both field and laboratory experiments encompassing biogeochemical processes, molecular mechanisms to improve our understanding of the role of Si in ecosystem processes. Meta-analyses and paleo-environmental studies using phytoliths are also welcome.

Convener: Camille Delvigne | Co-conveners: Julia Cooke, Jean-Thomas Cornelis, Anika Klotzbücher, Jörg Schaller
| Tue, 09 Apr, 16:15–18:00
Room 2.25
| Attendance Tue, 09 Apr, 14:00–15:45
Hall A

Attendance time: Tuesday, 9 April 2019, 14:00–15:45 | Hall A

Chairperson: Joerg Schaller
A.384 |
| solicited
Thimo Klotzbücher, Anika Klotzbücher, Reinhold Jahn, Doris Vetterlein, Klaus Kaiser, and Robert Mikutta
A.386 |
Nicolai Koebernick, Thimo Klotzbücher, Maximilian Wolff, Klaus Kaiser, Anika Klotzbücher, and Robert Mikutta
A.387 |
Phytolith accumulation of dacitic volcanic ash deposit grown to rice in Tarlac, Philippines
Michelle Quimbo, Pierre Delmelle, Sophie Opfergelt, and Pearl Sanchez
A.388 |
Anna Georgiadis, Sven Marhan, Adrian Lattacher, Philipp Mäder, and Thilo Rennert
A.389 |
Jean-Thomas Cornelis, Felix de Tombeur, Benjamin Turner, Etienne Laliberté, and Hans Lambers
A.390 |
Daniel Puppe, Danuta Kaczorek, and Michael Sommer
A.392 |
Barbara von der Lühe, Laura Pauli, Britta Greenshields, Harold Hughes, Aiyen Tjoa, and Daniela Sauer
A.393 |
Mathias Stein, Thilo Rennert, Dietrich Gudat, and Anna Georgiadis
A.394 |
Michael Sommer, Marc Wehrhan, Daniel Puppe, and Danuta Kaczorek
A.395 |
Nicole Fernandez, Julien Bouchez, Louis Derry, Jon Chorover, Jérôme Gaillardet, and Jennifer Druhan
A.396 |
Camille Delvigne, Abel Guihou, Jan A. Schuessler, Paul Savage, Sebastian Fischer, Jade E. Hatton, Kate R. Hendry, Germain Bayon, Emmanuel Ponzevera, Bastian Georg, Alisson Akerman, Oleg Pokrovsky, Frank Poitrasson, Jean-Dominique Meunier, and Isabelle Basile-Doelsch