B063
Impacts of winter climate change on hydrobiogeochemical dynamics of terrestrial and aquatic systems during the winter and shoulder seasons

Session ID#: 80229

Session Description:
In temperate and boreal regions, winters are characterized by sustained low temperatures and snow accumulation.  As winters warm, the loss of these two conditions have important implications for ecosystem processes, both during winter and the rest of the year. Significant uncertainties prevail in quantifying and predicting the hydrobiogeochemical processes of snow-dominated terrestrial systems occurring during the winter and shoulder seasons as the climate changes. In this session we seek contributions that advance our understanding of how changing winter conditions affect terrestrial and aquatic ecosystems, both within and outside winter. We invite presentations from observational, experimental, and modelling studies of hydrological, biogeochemical and ecological processes across spatial and temporal scales and among land use types. We are interested in research that advances our understanding of how changing winters impact ecosystems, featuring insights into subnivean microbial activity, hydrologic flowpaths, carbon and nutrient exchanges, and the coupling-decoupling of microbial and plant interactions.
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0438 Diel, seasonal, and annual cycles [BIOGEOSCIENCES]
0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]

Primary Convener:  Alexandra Contosta, University of New Hampshire Main Campus, Institute for the Study of Earth, Oceans and Space, Durham, NH, United States
Conveners:  Elizabeth Burakowski, University of New Hampshire, Durham, NH, United States, Fereidoun Rezanezhad, University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada and Patrick Sorensen, Lawrence Berkeley National Laboratory, Earth and Environmental Sciences, Berkeley, CA, United States
Primary Liaison:  Alexandra Contosta, University of New Hampshire Main Campus, Institute for the Study of Earth, Oceans and Space, Durham, NH, United States
 
Additive Effects of Spring Freezing and Summer Drought Stress on Plant Productivity and Ecosystem Nitrogen Retention (Invited) (491840)
Hugh A. L. Henry and Ricky Kong, University of Western Ontario, London, ON, Canada
 
Streamflow and water quality responses to winter weather whiplash events at long-term research sites (518942)
Nora J Casson, University of Winnipeg, Department of Geography, Winnipeg, MB, Canada, Alexandra Contosta, University of New Hampshire Main Campus, Institute for the Study of Earth, Oceans and Space, Durham, NH, United States, Elizabeth Burakowski, University of New Hampshire, Durham, NH, United States, John L Campbell, USDA Forest Service, Northern Research Station, Vallejo, CA, United States, Mindy S Crandall, University of Maine, School of Forest Resources, Orono, ME, United States, Irena F Creed, Univ Western Ontario, London, ON, Canada, Catherine Eimers, Trent University, Trent School of the Environment, Peterborough, ON, Canada, Sarah Garlick, Hubbard Brook Research Foundation, Science Policy and Outreach, West Thornton, NH, United States, David A Lutz, Dartmouth College, Hanover, NH, United States, Anita T Morzillo, University of Connecticut, Department of Natural Resources & the Environment, Storrs, CT, United States, Sarah J. Nelson, University of Maine, Orono, ME, United States and Geethani Eragoda Arachchilage, University of Winnipeg, Geography, Winnipeg, MB, Canada
 
Asynchronous Responses of Carbon Uptake and Carbon Loss to Antecedent Winter Conditions in Northern Temperate Ecosystems (Invited) (545699)
Rebecca Sanders-DeMott, Andrew Ouimette and Scott V Ollinger, University of New Hampshire, Durham, NH, United States
 
Consequences of Changing Winter Climate for Carbon Balance in a Temperate Forest (563717)
J William Munger1, Tim G. Whitby1, Marc-Andre Giasson2 and Adrien Finzi2, (1)Harvard University, School of Engineering and Applied Sciences, Cambridge, MA, United States, (2)Boston University, Boston, MA, United States
 
Interacting Physical Processes during Ice Formation and at Ice Break-up in a Large Deep Lake (564562)
Alicia Cortes, University of California Davis, Civil and Environmental Engineering, Davis, CA, United States, Katie Stagl, University of California Davis, Civil and Environmental Engineering, Davis, United States, Fabian A Bombardelli, Univ. of California, Davis, Davis, CA, United States and Alexander Forrest, University of California - Davis, Civil and Environmental Engineering, Davis, CA, United States
 
Model sensitivity of fall and early winter carbon and nutrient cycling to topography, hydrology, and soil properties (575489)
Ian Shirley1, Baptiste Dafflon1, Zelalem Amdie Mekonnen2, Bhavna Arora3, Haruko Murakami Wainwright1, William J Riley4 and Susan Hubbard1, (1)Lawrence Berkeley National Laboratory, Earth and Environmental Sciences, Berkeley, CA, United States, (2)University of Alberta, Edmonton, AB, Canada, (3)Lawrence Berkeley National Laboratory, Energy Geosciences Division, Berkeley, CA, United States, (4)Lawrence Berkeley National Laboratory, Berkeley, CA, United States
 
Investigating soil aggregate disruption as a carbon source for N2O emissions during freeze-thaw (583198)
Alison King1, Fereidoun Rezanezhad2 and Claudia Wagner-Riddle1, (1)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada, (2)University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada
 
Impact of Winter Soil Processes on Fertilizer Application Efficacy and Nutrient Leaching in Cold Region Agroecosystems (591370)
Konrad Krogstad1, Grant Jensen2, Laura Hug2 and Fereidoun Rezanezhad1, (1)University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, (2)University of Waterloo, Biology, Waterloo, ON, Canada
 
Effects of rain on snow events on runoff generation and nutrient export from forested and agricultural catchments in northern Vermont (607834)
Erin Cedar Seybold1, Dustin W Kincaid2, Brittany Lancellotti3, Carol Adair4, Julia N Perdrial5 and Andrew W. Schroth5, (1)Kansas Geological Survey, Lawrence, KS, United States, (2)University of Vermont, Vermont EPSCoR, Burlington, VT, United States, (3)University of Vermont, Burlington, VT, United States, (4)University of Vermont, Rubenstein School of Environment and Natural Resources, Burlington, VT, United States, (5)University of Vermont, Department of Geology, Burlington, VT, United States
 
Examining the influence of frost on carbon and nitrogen cycling in cold region organic soils under current and future climates (613898)
Heather Rose Townsend1, Fereidoun Rezanezhad1, Christina Marie Smeaton2, Merrin L Macrae3, Scott Smith4, Chris Thomas Parsons5 and Philippe Van Cappellen1, (1)University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, (2)Memorial University of Newfoundland, School of Science and the Environment, Corner Brook, NF, Canada, (3)University of Waterloo, Waterloo, ON, Canada, (4)Wilfrid Laurier University, Department of Chemistry and biochemistry, Waterloo, ON, Canada, (5)University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada
 
Agricultural Soil Oxygen and Moisture Dynamics During Winter and Shoulder Seasons (616310)
Tatjana Milojevic1, Fereidoun Rezanezhad1, Alison Mao1, Sean Jordan2, Claudia Wagner-Riddle2 and Philippe Van Cappellen1, (1)University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, (2)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
 
Comparative Ecophysiology of Two Southern Appalachian Conifers: The Importance of Winter (629710)
Rachel Jordan1,2, Zane R. Sink2 and Howard S. Neufeld2, (1)University of Wisconsin-Madison, Botany, Madison, WI, United States, (2)Appalachian State University, Biology, Boone, NC, United States
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