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353 Physics, Chemistry, and Ecology of Seasonally Frozen Soils: I - Have We Ignored the Role of Winter and Spring on Soil Processes at Our Peril?

Oral Session

As latitude increases, the annual soil temperature regime becomes a strong influence on natural and agricultural systems. Physical and chemical properties, water and nutrient movements, and soil ecology are all affected by freezing and thawing processes in northern landscapes. This topical session explores the effects of winter and spring conditions on soil physical, chemical, and ecological processes and how climate change affects these soil processes.

S03 Soil Biology & Biochemistry
Wednesday, October 19, 2011: 8:30 AM-11:05 AM
Henry Gonzalez Convention Center, Room 006B, River Level
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Organizers:
Barbara J. Cade-Menun , Ymene Fouli , D. Keith Reid and Daryl Dagesse
Presiders:
Barbara J. Cade-Menun and Ymene Fouli
8:30 AM
Introductory Remarks
8:35 AM
353-1
Micro-Watershed Atlas of Canada.
Sanjay Gupta, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta
Recorded Presentation Audio File
8:50 AM
353-2
Freeze Thaw Cycle Effects on Infiltration Rate and Bulk Density of Three Saskatchewan Soils.
Ymene Fouli, Agriculture and Agri-food Canada; Barbara J. Cade-Menun, Agriculture and Agri-Food Canada
9:05 AM
353-3
Sustainable Nutrient Management of In-Field Livestock Wintering Systems.
Dennis Haak, Agriculture and Agri-Food Canada; Dale Timmerman, Agriculture and Agri-Food Canada; Dennis Lastuka, Agriculture and Agri-Food Canada
Recorded Presentation Audio File
9:20 AM
353-4
Freezing Cycle Effects On Water Stability of Soil Aggregates.
Daryl F. Dagesse, Brock University
9:35 AM
353-5
Nutrient Loss In Snowmelt Runoff From Cattle Winter Bale-Grazing In SW Saskatchewan.
Barbara J. Cade-Menun, Agriculture and Agri-Food Canada; Brian McConkey, Agriculture and Agri-Food Canada; Alan Iwaasa, Agriculture and Agri-Food Canada; Bart Lardner, Western Beef Development Centre
9:50 AM
353-6
Effects of Decreased Snowpack On Nutrient Cycling In a Sagebrush-Steppe Ecosystem.
Tasha N. Prettyman, Utah State University; Aldo Compagnoni, Utah State University; Peter Adler, Utah State University; John Stark, Utah State University
Recorded Presentation Audio File
10:05 AM
Break
10:20 AM
353-7
Soil Conditions Affecting Emissions of Nitrous Oxide From Thawing Soil.
Mario Tenuta, University of Manitoba
Recorded Presentation Audio File
10:35 AM
353-8
Comparison of Simultaneous Soil Profile N2O Concentrations and Surface N2O Flux Measurements Overwinter and At Spring Thaw In An Agricultural Soil.
Neil Risk, University of Guelph; Claudia Wagner-Riddle, University of Guelph; Christian Blodau, University of Guelph; Jon Warland, University of Guelph
Recorded Presentation Audio File
10:50 AM
353-9
Crop Residues Influence Response of Soil N2o Emissions to Freeze-Thaw Cycles.
David Pelster, Agriculture and Agri-Food Canada; Martin Chantigny, Agriculture and Agri-Food Canada; Denis Angers, Agriculture and Agri-Food Canada; Philippe Rochette, Agriculture and Agri-Food Canada
11:05 AM
Adjourn
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