8:00 AM Vitousek, Peter^*,1, Chadwick, Oliver², Ladofoged, Thegn³, Graves, Michael ⁴, Hotchkiss, Sara⁵, Kirch, Patrick⁶, Matson, Pamela¹, Tuljapurkar, Shripad¹, ¹ Stanford University, Stanford, CA, USA² University of California - Santa Barbara, Santa Barbara, CA, USA³ University of Washington, Seattle, WA, USA⁴ University of Hawaii - Manoa, Honolulu, HI, USA⁵ University of Wisconsin - Madison, Madison, WI, USA⁶ University of California - Berkeley, Berkeley, CA, USA Climate, nutrient availability, and the distribution of pre-contact dryland agriculture in Hawai'i.

FULL ABSTRACT

8:15 AM Hamilton, Jason^*,1, Dermody, Orla², Aldea, Mihai¹, Zangerl, Arthur², Berenbaum, May², Rogers, Alistair³, DeLucia, Evan², ¹ Ithaca College, Ithaca, NY jhamilton@ithaca.edu² University of Illinois at Urbana-Champaign, Urbana, IL³ Brookhaven National Laboratory, Upton, NY Elevated atmospheric carbon dioxide affects crop herbivory by insects.

FULL ABSTRACT

8:30 AM Middleton, Elizabeth^*,1, McMurtrey, James², Campbell, Petya¹, Corp, Lawrence¹, Butcher, LaDean¹, ¹ NASA/Goddard Space Flight Center, Greenbelt, MD, USA² USDA Hydrology and Remote Sensing Laboratory, Beltsville, MD, USA Foliar reflectance and fluorescence responses for corn and soybean plants.

FULL ABSTRACT

8:45 AM Andrews, Susan^*,1, Karlen, Douglas², ¹ USDA-NRCS Soil Quality Institute, Ames, IA, 50011² USDA-ARS National Soil Tilth Lab, Ames, IA, 50011 A framework for soil management assessment: Four case studies.

FULL ABSTRACT

9:00 AM Sosnoskie, Lynn ^*,1, Herms, Catherine¹, Cardina, John¹, ¹ The Ohio State University, Wooster, OH Species composition of the weed seedbank with varying crop and soil management.

FULL ABSTRACT

9:15 AM Hooker, Beth^*,1, Morris, Thomas¹, Cardon, Zoe¹, ¹ University of Connecticut, Storrs, CT Long-term effects of tillage and corn stalk return on the dynamics of old and new carbon pools.

FULL ABSTRACT

9:30 AM Break.

9:45 AM McLauchlan, Kendra^*,1, Hobbie, Sarah¹, ¹ University of Minnesota, St. Paul, MN Role of texture and vegetation in determining soil organic matter dynamics of former agricultural fields.

FULL ABSTRACT

10:00 AM Russell, Ann^{*,1, 2}, Laird, David¹, Mallarino, Antonio³, ¹ USDA-ARS National Soil Tilth Laboratory, Ames, IA, USA² Iowa State University, Ames, IA, 50011³ Iowa State University, Ames, IA, USA Long-term effects of nitrogen fertilization and crop rotation on soil carbon in corn-belt agroecosystems.

FULL ABSTRACT

10:15 AM Bliss, Kristin^*,1, Jones, Robert ², Wagner, Rachel², Mou, Paul³, ¹ Randolph-Macon Woman's College, Lynchburg, VA, USA² Virginia Tech, Blacksburg, VA, USA³ Department of Biology, Greensboro, NC, USA Root foraging for patchy nutrients: Morphological, physiological and demographic plasticity in four species.

FULL ABSTRACT

10:30 AM TBA.

10:45 AM Del Grosso, Stephen^*,1, Mosier, Arvin², Ojima, Dennis¹, Parton, William¹, Keough, Cindy¹, ¹ Colorado State University, Fort Collins, CO² USDA - Agricultural Research Service, Fort Collins, CO Using the DAYCENT ecosystem model to assess greenhouse gas emissions from agricultural systems in the US.

FULL ABSTRACT

11:00 AM Mosier, Arvin^*,1, Peterson, Gary ², ¹ USDA/ARS, Fort Collins, CO² Soil and Crop Science Department, Fort Collins, CO Trace gas exchange and agroecosystem management in nonirrigated, semiarid cropping systems in northeastern Colorado.

FULL ABSTRACT