Oral Programme BG2.1

BG2.1

Biotic interactions and biogeochemical processes (co-sponsored by iLEAPS)
Convener: Michael Bahn 
Co-Conveners: Richard Bardgett , Markus Reichstein 
Session details
Oral Programme
 / Wed, 05 May, 08:30–12:00 / Room 24
Poster Programme
 / Attendance Wed, 05 May, 17:30–19:00 / Poster Area BG
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Wednesday, 05 May 2010
Room 24
Chairperson: Michael Bahn
Plant-soil carbon allocation and biogeochemical processes

08:30–09:00
EGU2010-7836
Trees actively and directly influence biogeochemical processes in boreal forested watersheds (solicited)
Peter Högberg
09:00–09:15
EGU2010-12585
Tree girdling as a tool to study plant-microbe C- and N interactions in beech rhizsophere
Michael Dannenmann, Judy Simon, Rainer Gasche, Rodica Pena, Andrea Polle, Heinz Rennenberg, and Hans Papen and the the Beech Research Group
09:15–09:30
EGU2010-12933
The ‘overflow tap' theory: linking GPP to forest soil carbon dynamics and the mycorrhizal component
Andreas Heinemeyer, Matthew Willkinson, Jens-Arne Subke, Eric Casella, Rodrigo Vargas, James Morison, and Phil Ineson
09:30–09:45
EGU2010-4460
Soil respiration under mature deciduous forest trees after 7 years of CO2 enrichment
Martin Bader and Christian Körner
09:45–10:00
EGU2010-4589
Subalpine grassland carbon dioxide fluxes indicate substantial carbon losses under increased nitrogen deposition, but not at elevated ozone concentration
Matthias Volk, Daniel Obrist, Kris Novak, Robin Giger, Seraina Bassin, and Jürg Fuhrer
COFFEE BREAK
Chairperson: Richard Bardgett
Resource effects on biotic controls of biogeochemical processes

10:30–11:00
EGU2010-668
Plant resource history effects on contemporary microbial processes (solicited)
Mark Bradford
11:00–11:15
EGU2010-11050
Growth rates of rhizosphere microorganisms depend on competitive abilities of plants for nitrogen
Evgenia Blagodatskaya, Johanna Littschwager, Marianna Lauerer, and Yakov Kuzyakov
11:15–11:30
EGU2010-11594
Plant community composition promotes multiple ecosystem functions in grassland at low and high soil fertility
Gerlinde De Deyn, Nick Ostle, and Richard Bardgett
11:30–11:45
EGU2010-6665
The silica dynamics of deforestation: new evidence for a biologically controlled Si cycle
Eric Struyf, Adriaan Smis, Wim Clymans, Gerard Govers, Bas Van Wesemael, Elisabeth Frot, Okke Batelaan, Peter Goos, Stefan Van Damme, and Patrick Meire
11:45–12:00
EGU2010-3308
On the functional role of tree species in two forest ecosystems
Werner Leo Kutsch, Mathias Herbst, and Chunjiang Liu