Integration Across Landscapes and Waterscapes

about RCNs...

The overall objective of this Denitrification Research Coordination Network is to develop a coordinated network of denitrification scientists from a wide array of disciplines, from molecular biology to ecosystem science, and from soil science to oceanography.

NSF
National Science Foundation

Integrating Advances in Molecular Studies of Denitrification With Biogeochemistry at Larger Scales - 2010

Dec. 13 - 17, 2010, San Francisco

The following experts in molecular methods for studying denitrification presented papers at this AGU session:
Åsa Helena Frostegård
Laurent Philippot
Jeremy Rich
Jenny Wang
Session Description
Molecular techniques for investigating nitrogen (N) cycling generally and denitrification in particular have been advancing rapidly. These methodological developments may provide valuable new understanding and perspectives to plot-level studies of N fluxes and to ecosystem models and N budgets. Presentations are solicited that employ one or more molecular-based approaches to the study of denitrification in soils, sediments, or aquatic environments, and that explain or propose how data on genes, transcripts, proteomes, or metabalomes inform larger scale biogeochemical understanding. Abstracts that integrate molecular and flux measurements and/or modeling at multiple scales are encouraged.

Session Schedules

Thursday, December 16, 2010 – Oral Session Session Title: B43F. Integrating Advances in Molecular Studies of Denitrification With Biogeochemistry at Larger Scales

1:40 PM- 2:00 PM	B43F-01. Molecular approaches to understand the regulation of N2O emission from denitrifying bacteria – model strains and soil communities (Invited) A. Frostegard; L. R. Bakken
2:00 PM- 2:20 PM	B43F-02. Anaerobic Ammonium Oxidation (ANAMMOX) and Denitrification in Marine Environments (Invited) J. J. Rich
2:20 PM- 2:40 PM	B43F-03. Mapping spatial patterns of denitrifiers at large scales (Invited) L. Philippot; A. Ramette; N. Saby; D. Bru; S. Dequiedt; L. Ranjard; C. Jolivet; D. Arrouays
2:40 PM- 2:55 PM	B43F-04. Using T-RFLP data on denitrifier community composition to inform understanding of denitrification in stream sediments (Invited) S. Wang; K. Somers; E. Sudduth; B. Hassett; E. S. Bernhardt; D. L. Urban
2:55 PM- 3:10 PM	B43F-05. Combining qPCR and functional gene microarrays to directly link changes in the expression of the nirS gene to denitrification rates in aquatic sediment mesocosms. J. L. Bowen; A. R. Babbin; B. B. Ward
3:10 PM- 3:25 PM	B43F-06. Quantitative molecular biology and gas flux measurements demonstrate soil treatment and depth affects on the distribution and activity of denitrifiers. M. M. Barrett; M. Jahangir; L. Cardenas; M. Khalil; K. R. Richards; V. O’Flaherty
3:25 PM- 3:40 PM	B43F-07. Nitric oxide in denitrification – an elusive signal molecule emitted from soi.l L. R. Bakken; A. Frostegard

Friday, December 17, 2010 – Poster Session
Session Title: B51B. Integrating Advances in Molecular Studies of Denitrification With Biogeochemistry at Larger Scales II Posters

8:00 AM- 12:20 PM	B51B-0346. Mapping spatial patterns of denitrifiers for bridging community ecology and microbial processes along environmental gradients D. Bru; J. Cuhel; N. Saby; D. Cheneby; A. Chronokova; D. Arrouays; F. Martin-Laurent; M. Simek
8:00 AM- 12:20 PM	B51B-0347. Are Isotopologue Signatures of N2O from Bacterial Denitrifiers Indicative of NOR Type? R. Well; G. Braker; A. Giesemann; H. Flessa
8:00 AM- 12:20 PM	B51B-0348. Linking potential denitrification rates to microbial gene abundances in multiple boreal ecosystems D. G. Petersen; S. Blazewicz; D. J. Herman; M. K. Firestone; M. P. Waldrop
8:00 AM- 12:20 PM	B51B-0349. Molecular and Stable Isotope Investigation of Nitrite Respiring Bacterial Communities Capable of Anaerobic Ammonium Oxidation (ANAMMOX) and Denitrifying Anaerobic Methane Oxidation (DAMO) in Nitrogen Contaminated Groundwater. B. Song; M. Hirsch; J. Taylor; R. L. Smith; D. Repert; C. R. Tobias
8:00 AM- 12:20 PM	B51B-0350. Quantifying Temporal Autocorrelations for the Expression of Geobacter species mRNA Gene Transcripts at Variable Ammonium Levels during in situ U(VI) Bioremediation P. J. Mouser
8:00 AM- 12:20 PM	B51B-0351. Transcription of denitrification genes and kinetics of NO, N2O and N2 by soil bacteria as affected by pH B. Liu; L. R. Bakken; A. Frostegard
8:00 AM- 12:20 PM	B51B-0352. Quantifying Nitrogen Loss From Flooded Hawaiian Taro Fields J. L. Deenik; C. R. Penton; G. L. Bruland; B. N. Popp; P. Engstrom; J. A. Mueller; J. Tiedje
8:00 AM- 12:20 PM	B51B-0353. Denitrification in the karstic Floridan Aquifer M. Fork; A. R. Albertin; J. B. Heffernan; B. G. Katz; M. J. Cohen
8:00 AM- 12:20 PM	B51B-0354. Using Transcripts Abundance to Identify the Origin of Nitrous Oxide Emissions During Soil Wet-Up S. A. Placella; D. J. Herman; M. K. Firestone
8:00 AM- 12:20 PM	B51B-0355. *Mapping the distribution of the denitrifier community at large scales (Invited)* L. Philippot; D. Bru; A. Ramette; S. Dequiedt; L. Ranjard; C. Jolivet; D. Arrouays
8:00 AM- 12:20 PM	B51B-0356. Groundwater denitrification and denitrifer gene abundances at varying hydrogeological settings in Ireland M. M. Jahangir; M. Barrett; P. Johnston; V. O'Flaherty; M. I. Khalil; K. Richards
8:00 AM- 12:20 PM	B51B-0357. Comparing spatial and temporal dynamics of anammox and denitrifying communities at Cape Fear River Estuary and New River Estuary, North Carolina J. A. Lisa; M. D. Hirsch; K. A. Duernberger; C. R. Tobias; B. Song
8:00 AM- 12:20 PM	B51B-0358. Use of Novel Whole Core Incubations to Measure the Fate of Fertilizer N in a Flooded Agricultural System C. R. Penton; G. L. Bruland; B. N. Popp; P. Engstrom; J. Tiedje; G. A. Brown; J. L. Deenik
8:00 AM- 12:20 PM	B51B-0359. Greater absolute rates of N2O production and consumption with soil warming dwarf variations in denitrification enzyme temperature sensitivities across seasons L. K. Tiemann; S. A. Billings