314 Symposium--Biogeochemical Processes in Ecosystems: The Tannin Effect: I

Oral Session
S02 Soil Chemistry
Objective: To capture current information on the role of tannins in soils and ecosystems and their implications for agricultural and environmental issues. •Tannins (or polyphenolic compounds) are of interest in food chemistry, human and animal nutrition, industrial applications, environmental soil science, and agronomy. •Topics to be covered include basic to practical knowledge of –tannin chemistry, –tannin quantification, –metal-tannin interactions, –role of tannins from the (1) soil chemical, (2) ecological, and (3) environmental points of view.
Wednesday, November 4, 2009: 1:25 PM-4:25 PM
Convention Center, Room 329, Third Floor

Javier Gonzalez , Ann Hagerman and Jonathan Halvorson
1:25 PM
Introductory Remarks
2:10 PM
Tannins Influence Soil Chemical Processes.
Javier Gonzalez, USDA-ARS-AFSRC; Jonathan Halvorson, USDA-ARS-AFSRC
2:25 PM
Sorption of Tannin-C by Soils Affects Soil Cation Exchange Capacity.
Jonathan Halvorson, USDA-ARS-AFSRC; Javier Gonzalez, USDA-ARS-AFSRC; Ann Hagerman, Miami Univ.
2:40 PM
2:55 PM
Tannins as Regulators of Nitrogen Cycling, Carbon Storage, and GHG Emissions.
Robert Northup, Univ. of California, Davis; Randy Dahlgren, Univ. of California, Davis
3:15 PM
Tannins, Proteins, and Soil N in the Boreal Kalmia-Black Spruce System.
Robert Bradley, Univ. de Sherbrooke; Gilles Joanisse, Univ. de Sherbrooke; Caroline Preston, Natural Resources Canada; Nelson Thiffault, Ministère des Ressources Naturelles et de la Faune du Québec; Philippe LeBel, Univ. de Sherbrook
3:35 PM
From Genes to Ecosystems: The Genetic Basis of Condensed Tannins and Their Role in Nutrient Regulation in a Populus Model System.
Jennifer A. Schweitzer, Univ. of Tennessee; Micheal M. Madritch, Appalachian State Univ.; Joseph K. Bailey, Univ. of Tennessee; Carri J. LeRoy, Evergreen State College; Dylan G. Fischer, Evergreen State College; Brian J. Rehill, U.S. Naval Academy; Richard L. Lindroth, Univ. of Wisonsin, Madison; Ann Hagerman, Miami Univ.; Stuart C. Wooley, Univ. of California, Stanislau; Stephen Hart, Northern Arizona Univ.; Thomas G. Whitham, Northern Arizona Univ.
4:10 PM
Concluding Remarks
4:25 PM
Adjourn to Poster Session
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