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DTSTART:20121028T030000
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DESCRIPTION: \nMicrobial communities have a central role in many ecosystem 
 functions  such as biogeochemical cycling\, filtering and climate regulati
 on. This  talk will highlight how trait-based approaches can help understa
 nding  the role of microbial diversity in ecosystem functioning.\nFor this
   purpose\, denitrification\, a microbial process involved in N-cycling\, 
 was  selected as a model functional trait. Denitrification is a microbial 
  respiratory process during which soluble nitrogen oxides are used as  alt
 ernative electron acceptor when oxygen is limiting. It is involved in  eco
 system services such as filtering but also disservices. Thus\,  denitrific
 ation can results in considerable losses of nitrogen\, which is  the most 
 limiting nutrient for crop production in agriculture. It is  also responsi
 ble for emissions of nitrous oxide\, one of the six  greenhouse gases cons
 idered by the Kyoto protocol.\nIn addition to  natural variations\, agroec
 osystems are characterized by the use of  numerous practices\, such as fer
 tilization and tillage\, which influence  N-fluxes by denitrification. Thi
 s has been widely documented in the  literature\, mirroring the complexity
  of the underlying mechanisms  regulating this process. However\, in the l
 ast decade application of  molecular biology approaches has given the oppo
 rtunity to look beyond  denitrification rates and study the ecology of the
  microorganisms  involved in this process\, the denitrifying community.\nE
 xamples will be  provided on how this microbial guild can be used a model 
 for bridging  microbial community ecology\, microbial processes and ecosys
 tem functioning.\n 
DTSTART;TZID=Europe/Berlin:20130425T000000
DTEND;TZID=Europe/Berlin:20130425T235959
SUMMARY:Dr. Laurent Philippot\, Director of Research\, INRA - French Nation
 al Institute for Agricultural Research\, Dijon\, France (Homepage): Bridgi
 ng microbial community ecology and ecosystem functioning:  examplewith a N
 -cycling  microbial guild
TRANSP:TRANSPARENT
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