Dear colleagues,

We would like to bring to your attention the following session of the 
European Geosciences Union General Assembly 2010 in Vienna, 2 -- 7 May 
2010. It is a perfect home for either natural abundance or isotopic 
tracer studies of soil and ecosystem C cycles.

*BG2.5/AS4.18 Biosphere-Atmosphere interactions: Improving measurements 
and models of soil respiration and its components (co-sponsored by iLEAPS)*

*Session Details: *Accurate predictions of soil respiration rates are 
crucial to the predictive modelling of regional and global ecosystem 
carbon budgets. The challenge arises, in part, because CO_2 efflux 
comprises a range of sources that are difficult to separate using 
conventional methods. The sources include autotrophic contributions from 
roots and rhizosphere, as well as heterotrophic decomposition of soil 
organic matter of different ages and 'qualities' referring to the 
bonding structure of complex soil organic matter molecules. Over the 
past decade, there have been many advances in studying soil carbon 
dynamics, including improved methods in direct soil CO_2 efflux 
measurements and C turnover in soils using isotopic tracers, as well as 
approaches to identify heterotrophic soil communities and their seasonal 
dynamics. In this session, we invite contributions that examine 
measurements and/or models of either total or partitioned flux of CO_2 
from soils. In particular, we encourage studies that investigate 
relationships between ecosystem productivity and autotrophic activity, 
microbial dynamics, C turnover in soils, and respiration across space 
and time, especially those studies that employ novel methodologies that 
advance the mechanistic understanding of respiration. Submissions that 
attempt a synthesis across a range of spatial and temporal scales are 
particularly encouraged, while studies aimed at process understanding at 
a particular scale are equally welcomed.

*Confirmed keynote speakers:* Alf Ekblad (Írebro University, Sweden) and 
Michael Bahn (Univ. Innsbruck, Austria)

Abstract deadline: *18^th January 2010*
Deadline for Support Applications: *4^th December 2009*

For more detail and abstract submission, please see:

Please feel free to forward this message to anyone you think may be 

As convenors for this session, we look forward to receiving your 
abstracts. Hoping to see many of you in Vienna!

Jens-Arne Subke
Myroslava Khomik
Mariah Carbone
Paul Stoy


Jens-Arne Subke
Stockholm Environment Institute (SEI)
Department of Biology
Grimston House
University of York
York, YO10 5DD
Tel: ++44 (0)1904 432991
Fax: ++44 (0)1904 432898
e-mail: [log in to unmask]