Conference Program
Monday, July 6:
8.00-5:00 pm Registration
8.30-3.30 Field trips
5.00-5.10 Keith Paustian, Conference Chair 
5.10-5.20 Abad Chabbi, Past SOM Conference Chair
5.20-5.50 Gary Peterson, Past President, Soil Science Society of America
5.50- 6.40 Keynote: Eldor Paul “Soil organic matter dynamics: Looking to 2030 on the basis of 200 years of research.”
7.00-10.00 Dinner (BBQ) & entertainment
Tuesday, July 7:
Plenary session: Climate and SOM dynamics
Colorado Room: Chairs – Peter Grace & Mike Ryan
8.00-8.40: Keynote, Eric Davidson: “A conceptual framework explaining the ubiquitous temperature dependence of decomposition of soil organic matter and apparent exceptions to the rule.”
8.40-8.55: R. Conant: “Synthesis of recent studies investigating the relationship between soil OM lability and decomposition temperature sensitivity.”
8.55-9.10: M. Wetterstedt: “Temperature sensitivity and substrate quality in needle litter decomposition.”
9.10-9.25: D. Hopkins: “Soil organic carbon stocks and dynamics in long-term experimental grassland plots.”
9.25-9.40: J. Gillabel: “Protection of SOM determines the temperature sensitivity of SOM decomposition.” (presented by R. Merckx).
9.40-9.55: M. J. Steinweg: “Indirect evidence for reduced enzyme turnover under experimental drought at the Boston Area Climate Experiment”
Coffee Break
10.15-10.45: Invited, Miko Kirschbaum: “Climate change and SOM dynamics - Direct and indirect effects”
10.45-11.00: M. Hoosbeek: “Effect of free atmospheric CO2 enrichment (FACE) on symbiotic N2-fixation and soil carbon content and stabilization in a mixed deciduous stand in Wales, UK”
11.00-11.15: P. Barré: “Stable carbon in soils: insights from six long term bare fallow experiments”
11.15-11.30: C. Rasmussen: “Geologic control of soil carbon response to climate change: A dynamic interaction of soil minerals, temperature, and litter type”
11.30-11.45: B. Foereid: “Modelling changes in organic carbon in the soils of England and Wales”
11.45-12.00: General Discussion
12.00-1.30: Lunch Break
Parallel Session 1: Nitrogen and SOM dynamics
Colorado Room: Chairs – Paul Fixen & Ron Follett
1.30-2.10: Keynote, Don Zak: “Microbial responses to anthropogenic n deposition: Implications for the future functioning of terrestrial ecosystems”
2.10-2.25: S. Frey: “Soil organic matter responses to chronic nitrogen additions in a temperate forest”
2.25-2.40 M. Bradford: “Is rhizodeposited-carbon an important precursor for SOC? Exploring this question in the context of nitrogen and phosphorus fertilization experiments”
2.40-2.55 E. Arellano: “Short-term Effects of Biosolids Application on Nitrogen and Carbon pools in a Loblolly Pine (Pinus taeda L.) Plantation”
Coffee break
3.15-3.45: Invited, John Grove: “Fertilizer N and SOC in managed landscapes: Coupled, confounded and confused”
3.45-4.00: S. Zingore: “Influence of farmer management practices on soil organic carbon dynamics and maize productivity in smallholder farming systems in NE Zimbabwe”
4.00-4.15: M. Dodd: “Soil carbon and nitrogen changes over 20 years on New Zealand hill- country pastures receiving different phosphorus inputs”
4.15-4.30: P. Eliasson: “Carbon cost of nitrogen mineralisation in a dynamic forest ecosystem model”
4.30-4.45: General Discussion
Parallel Session 2: SOM dynamics in flooded, organic, alpine and high latitude soils White River Room: Chairs – Jürg Fuhrer & Maury Mausbach
1.30-2.10: Keynote, Jens Leifeld: “Organic matter in soils of cold and wet ecosystems - anything different?”
2.10-2.25: I. P. Harley: “Plant-soil interactions, positive priming effects and patterns of soil C storage in arctic Sweden”
2.25-2.40 C. Stewart: “The influence of plant species on soil organic matter chemistry in Hawaiian soils”
2.40-2.55: A. Koelbl: “Development of bulk density and of total C and N distribution during paddy soil evolution.”
Coffee Break
3.15-3.45: Invited, Genxing Pan: “Soil organic matter dynamics of rice paddies of China”
3.45-4.00: R. Singaravel: “Role of organic matter in sustaining fertility and productivity of problem soils of coastal ecosystem.”
4.00-4.15: L. S. Da Silva: “Methane emissions by flooded soils from Rio Grande do Sul State, Brazil.”
4.15-4.30: General Discussion
Parallel Session 3: Biofuels, SOM and net GHG balance
Cheyenne Room: Chairs – Stephen Ogle & Henry Janzen
1.30-2.10: Keynote, Phil Robertson: "Flies in the biofuels ointment: The complementary roles of SOM and nitrous oxide"
2.10-2.25 M. Dondini: “13C dynamics in soil aggregates across a soil profile under an established Miscanthus crop”
2.25-2.40 H. Gollany: “Simulating soil organic matter dynamics and effects of residue removal using the CQESTR model”
2.40-2.55 N. Amougou: “Management of Miscanthus giganteus: Impact on amount and quality of plant litters and their biodegradability in soil.”
Coffee Break
3.15-3.45 Invited, Bill Parton: “Impact of biofuel cropping systems on greenhouse gas fluxes”
3.45-4.00 B. VandenBygaart: “Crop residue removal and fertilizer N: Effects on soil organic carbon on a long-term crop rotation experiment in a Udic Boroll.”
4.00-4.15 L. Ma: “Long-Term Corn Stover Removal Effects on Soil Organic Carbon Dynamics as Simulated by RZWQM2”
4.15-4.30 G. Velu: “Potential of cellulose-producing actinomycetes from termite ecosystem in bioethanol production.”
4.30-4.45: General Discussion
5.00-7.00: Poster Session (Poster Session is open throughout the Symposium, however, authors are requested to be present 5-7 PM)
7.00-8.30: Dinner
8.30-10.00: Informal workshop on global and national SOM networks
White River Room
Wednesday, July 8:
Plenary session: SOM, soil disturbance and tillage
Colorado Room: Chairs – Gary Peterson & Rich Conant
8.00-8.40: Keynote, Roel Merckx: “Soil tillage and carbon sequestration – The elusive link”
8.40-8.55: J. Álvaro-Fuentes: “Current and future soil carbon sequestration in semiarid Mediterranean conditions: quantifying management and climate effects.”
8.55-9.10: F. Matus: “Carbon content in subtropical and temperate soil physical fractions as indicators of organic matter saturation.”
9.10-9.25: P. Gottschalk: “Simulation of soil organic carbon response at forest- cultivation sequences using 13C measurements.”
9.25-9.40: C.H. Lee: “Effect of long-term fertilization on soil organic carbon accumulation and microbial community structure in rice paddy soil.”
9.40-9.55: G. Alberti: “Effects of land use change and reduced tillage on the greenhouse gases balance in an Italian agro-ecosystem from Italian agricultural areas.”
9.55-10.10: M. Spohn: “Impacts of land use on TOC, Chwe, carbohydrates, glomalin and water-stable aggregates in Gleyic Podzols and Haplic Gleysols – Analysis of a 220-year chronosequence.”
Coffee Break
10.30-11.00: Invited, D. Angers: “Tillage and soil organic C: digging deeper into the soil.”
11.00-11.15: B. Sarapatka: “Organic matter in the soil of pasture land with various intensity of use.”
11.15-11.30: I. Handayani: “Soil organic matter pool dynamics following field succession in Sumatra, Indonesia.”
11.30-11.45: A. Swan: “Socioeconomic and environmental factors that influence adoption of no-till in the Great Plains.”
11.45-12.00: General Discussion
12.00-1:30: Lunch Break
Parallel Session 4: SOM and soil depth – controls on C and N balance
Colorado Room: Chair –Abad Chabbi
1.30-2.10: Keynote, Cornelia Rumpel: “SOM in deep soil horizons: what do we know about its participation in C and N cycles?”
2.10-2.25: P. Baldrain: “Transformation of soil organic matter by fungi and their extracellular enzymes in forest soils is controlled by soil depth and fungal community composition.”
2.25-2.40 E. R. Toosi: “Evaluation of some chemical and spectroscopic parameters during the biodegradation of soluble organic matter.”
2.40-2.55 I. De Troyer: “Large effects of land management on dissolved organic matter in surface layers of agricultural soils are attenuated at larger soil depth.”
2.25-3.10: M. Steffens: “Stabilisation of soil organic matter in complete soil profiles of semiarid steppe soils after grazing cessation.”
Coffee Break
3.30-4:00: Invited, Bernd Marschner: “Sensitivity of subsoil organic matter turnover to inputs of labile substrates.”
4.00-4.15: J. P. Croue: “Structural properties of dissolved organic carbon in deep horizons of an arable soil”
4.15-4.30: T. Eglin: “Why is deep soil carbon old? A modelling approach.” (presented by P. Barré)
4.30-4.45: M. Braakhekke: “Towards explicit representation of the vertical soil organic matter profile and surface organic layers in soil carbon models.”
4.45-5.00: J. Meersmans: “Modelling the depth distribution of soil organic carbon, in relation to land use and soil type at the regional scale in northern Belgium.”
5.00-5.15: E. Blagodatskaya: “Three sources partitioning of CO2 efflux from soil to evaluate mechanisms of priming effects.”
5.15-5.30: S. Anusontpornperm: “SOM and total nitrogen balance in soils after changes from forest to agriculture in humid subtropical highlands of Thailand.”
5.30-5.45: M. Sanaullah: “Root-derived carbon and nitrogen turnover and stabilization in different soil fractions at major soil horizons.”
5.45-6.00: General Discussion
Parallel Session 5: Soil C quantification for GHG accounting
Cheyenne Room: Chairs – Olof Andrén & Bill Parton
1.30-2.10: Keynote, Steven Ogle: “Quantifying soil organic c stock changes for GHG inventories: Approaches, uncertainties and future challenges”
2.10-2.25: J-F. Soussana: “Drivers of soil C sequestration in European grasslands inferred from flux measurements.”
2.25-2.40 B. van Wesemael: “Dealing with uncertainties in extrapolating SOC data for regional inventories.”
2.40-2.55 S. Wuest: “The importance of bulk density independent sampling for soil C quantification.”
2.55-3.10: G. Zirkle: “Modeling carbon sequestration in home lawns.”
Coffee Break
3.30-4.00: Invited, Brian McConkey: “Quantifying carbon change in Canadian cropland for greenhouse gas reporting.”
4.00-4.15: B. Kusumo: “Measuring carbon dynamics in field soils using soil spectral reflectance: Prediction of maize root density and soil carbon content.”
4.15-4.30: I. Schöning: “The effect of forest management on soil carbon stocks.”
4.30-4.45: A. Peressotti: “Spatial application of DNDC biogeochemistry model and its potentiality for estimating GHG emissions from Italian agricultural areas.”
4.45-5.00: L. West: “The National Cooperative Soil Survey and soil organic carbon inventories”
5.00-5.15: R. C. Izaurralde: “Simulating SOM dynamics and denitrification-nitrification processes with the EPIC model.”
5.15-5.30: E. Lokupitiya: “Estimation of carbon cycling in croplands using SiBcrop model.”
5.30-5.45: C. Kome: “Comparison of COMET-VR and SCI as Carbon Assessment Tools.”
5.45-6.00: General Discussion
Parallel Session 6: SOM - global & regional perspectives
White River Room: Chairs – Jorge Etchevers & Gene Kelly
1.30-2.10: Keynote, Daniel Hillel: “An overview of soil, carbon, and climate change.”
2.10-2.25: U. Hamer: “Land-use induced dynamics of soil organic matter and nitrogen in mountain soils of South Ecuador”
2.25-2.40 M. Wattenbach: “The carbon balance of European croplands: a trans-European, cross-site, multi model simulation study.” (presented by P. Gottshalk)
2.40-2.55 B. Wilson: “Opportunities and barriers for the estimation and prediction of soil carbon at State and catchment scales in New South Wales, Australia.”
2.55-3.10: J. Wäldchen: “Effects of historic forest management on carbon stores in soils in the Hainich-Dün Region, Central Germany.”
Coffee Break
3.30-4.00: Invited, C. E. P. Cerri: “SOM - global and regional perspectives: a regulatory compartment of GHG levels in the atmosphere.”
4.00-4.15: S. Ghosh: “Impact of land use variation on soil C change in different agricultural soils in NW New South Wales, Australia.”
4.15-4.30: S. Evans: “The effect of precipitation and land use on carbon pool dynamics in Inner Mongolia, China.”
4.30-4.45: R. Kelly: “Differential impacts of grazing and fire on central U.S. grasslands C and N balance under current and projected climate and atmospheric CO2.”
4.45-5.00: M. A. Liebig: “Grazing effects on net global warming potential in mixed grass prairie.”
5.00-5.15: J. Fuhrer: “Cropland conversion to grassland: increasing or decreasing soil organic carbon?”
5.15-5.30: General Discussion
7.00-10.00: Social Dinner
Thursday, July 9:
Plenary session: Developments in SOM characterization methods – what do they tell us about SOM dynamics? Colorado Room: Chair – Phil Sollins, Denis Angers
8.00-8.40: Keynote, Ingrid Kögel-Knaber: “SOM and soil architecture: developments in characterization methods.
8.40-8.55: D. Curtin: “On the use of physical fractionation methods to isolate the labile portion of soil organic matter.”
8.55-9.10: L. Mayer: “Photodissolution of soil organic matter.”
9.10-9.25: M. Beare: “Effect of extraction temperature on the composition and biodegradability of water-extractable soil organic matter.”
9.25-9.40: F. J. Calderon: “Changes in mid-infrared spectral properties of soil fractions during incubation”
9.40-9.55: G. P. Olchin: “Modeling saturation and protection mechanisms of soil organic matter.”
Coffee Break
10.15-10.45: Invited, Johannes Lehmann: “High spatial variability of soil organic matter detected by synchrotron-based spectroscopy.”
10.45-11.00: S. Sleutel: “Organic matter in sandy cropland soils studied by combined density fractionation and pyrolysis field ionization mass spectroscopy”
11.00-11.15: H. Throckmorton: “Carbon turnover from diverse microbial groups in temperate and tropical forest soils.”
11.15-11.30: M. Thevenot: “Fate of lignins in soils: a review.”
11.30-11.45: M. Kaiser: “Separation of mineral associated organic matter from arable and forest topsoils by sequentially combined physical and chemical steps of fractionation.”
11.45-12.00: General Discussion
12.00-1.30: Lunch Break
Plenary session: SOM and SOM research in 2030 (invited speakers only)
Colorado Room: Chair – Eldor Paul
1.30-2.10: Keynote, Henry Janzen: “SOM research in 2030: what scientists then might ask of us now.”
2.10-2.50: Keynote, David Schimel: (Title TBA)
2.50-3:00: Discussion
3:00-3:30 Conference summary and adjournment: Ron Follett
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