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Dear colleagues,

we would like to draw your attention to the following session at the 
next European Geosciences Union (EGU) General Assembly in Vienna (2 - 7 
May 2010):

*"**Denitrification in terrestrial and aquatic ecosystems - advances in 
quantification, controlling factors and process-based modelling**" 
(**BG2.16**)*

The contribution of microbial denitrification to nitrogen cycling in 
terrestrial and aquatic ecosystems is poorly understood. Exchanges of 
gaseous N species by microbial denitrification are of importance to 
ecosystem N budgets as well as to global warming scenarios and 
stratospheric ozone degradation. Quantification of gaseous N exchange 
rates is a great analytical challenge, precise and accurate detection of 
gaseous N fluxes is difficult because of high ambient backgrounds and 
quantitatively small mass fluxes. Since dynamics of microbial 
denitrification have mostly been investigated under laboratory 
conditions, the effective control at the field scale and the spatial 
variability of in situ denitrification is still not sufficiently 
clarified. Due to the lack of suitable data-sets, process-based 
denitrification models have rarely been validated and results of their 
application on site-specific and regional scales are highly uncertain. 
Recent technological advances in measurements of N2 fluxes and linking 
structure and activity of denitrifying microbial communities with 
denitrification rates offer new opportunities in this area. We invite 
contributions from the following fields:
Methodical advances in measuring and modelling of denitrification in 
soils, wetlands, aquifers and open water bodies; measuring N2 and N2O 
fluxes from denitrification and controlling factors under field-like 
conditions using methods like incubation under He atmosphere, 15N-Tracer 
technique, natural abundance stable isotopes signatures of N2O and N2 
fluxes, or N2/Ar ratios; method comparisons; process-based modelling of 
denitrification at various scales; linking denitrification rates to 
parameters of the denitrifying community.

 

Information on our session and abstract submission can be found
here: _http://meetingorganizer.copernicus.org/EGU2010/session/3109_
 
General information on the EGU General Assembly 2009 can be found
here:
_http://meetings.copernicus.org/egu2010/_
 
IMPORTANT DEADLINES:
Deadline for Receipt of Abstracts - 18 January 2010
Deadline for Support Applications - 4 December 2009
 
We look forward to seeing you in Vienna!
 
Reinhard Well
 
 
conveners
Prof. Dr. Klaus Butterbach-Bahl
Institute for Meteorology and Climate Research
Forschungszentrum Karlsruhe
Kreuzeckbahnstr. 19
82467 Garmisch-Partenkirchen, Germany
Phone: +49-(0)8821-183136
Fax:     +49-(0)8824-183294
email: [log in to unmask]
 
Prof. Dr. Heinz Flessa
Institute of Agricultural Climate Research
Johann Heinrich von Thünen-Institut
Federal Research Institute for Rural Areas, Forestry and Fisheries
Bundesallee 50
38116 Braunschweig, Germany
Phone: 49 (0)531 596 2601
Fax: +49 (0)531 596 2599
E-Mail: [log in to unmask] <mailto:[log in to unmask]>
 
Ir. Dries Roobroeck <mailto:[log in to unmask]>
Laboratory of Applied Physical Chemistry - ISOFYS. Department of Applied 
Analytical and Physical Chemistry, Ghent University 
<http://www.UGent.be>,Belgium.
el: +32 (0)9 264 99 09
Fax: +32 (0)9 264 62 42
E-mail: [log in to unmask] <mailto:[log in to unmask]>
 
Dr. Reinhard Well
Institute of Agricultural Climate Research
Johann Heinrich von Thünen-Institut
Federal Research Institute for Rural Areas, Forestry and Fisheries
Bundesallee 50
38116 Braunschweig, Germany
Phone: 49 (0)531 596 2535
Fax: +49 (0)531 596 2599
E-Mail: [log in to unmask] 
<https://webmail.vti.bund.de/src/compose.php?send_to=reinhard.well%40vti.bund.de>