8:00 AM

Pardo, Linda*,1, Templer, Pamela2, Fahey, Timothy3, 1 USDA Forest Service, Burlington, VT2 Boston University, Boston, MA3 Cornell University, Ithaca, NY, Species differences in root and foliar 15N: causes and implications.

FULL ABSTRACT

8:20 AM

Norby, Richard*,1, Finzi, Adrien 2, DeLucia, Evan 3, Ceulemans, Reinhart 4, Gielen, Birgit 4, 1 Oak Ridge National Laboratory, Oak Ridge, TN2 Boston University, Boston, MA3 University of Illinois, Urbana, IL4 University of Antwerp, Wilrijk, Belgium, Nitrogen uptake and net primary productivity in four forest FACE experiments.

FULL ABSTRACT

8:40 AM

Stephan, Kirsten*,1, Koyama, Akihiro1, Kavanagh, Kathleen1, 1 University of Idaho, Moscow, ID, Comparison of wildfire and prescribed burn effects on nitrogen dynamics in headwater ecosystems in central Idaho.

FULL ABSTRACT

9:00 AM

Fortuna, Ann-Marie *,1, Honeycutt, C. Wayne 1, Marsh, Terence2, 1 USDA-ARS, NEPSWL, University of Maine, Orono, ME2 Center for Microbial Ecology, Dept. of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, Variations in nitrification potential in manured agroecosystems of contrasting soil type.

FULL ABSTRACT

9:40 AM

, Break.

9:50 AM

Wang, Lixin*,1, Macko, Stephen1, D'odorico, Paolo1, 1 University of Virginia, Charlottesville, VA, Nitrogen uptake preferences by plants in African savannas.

FULL ABSTRACT

10:10 AM

Hobbie, John*,1, Hobbie, Erik2, 1 Marine Biological Laboratory, Woods Hole, MA2 University of New Hampshire, Durham, NH, 15N content of soil, leaves, and ectomycorrhizal fungi indicate the degree of N limitation in tundra and forests.

FULL ABSTRACT

10:30 AM

LeDuc, Stephen*,1, Rothstein, David1, 1 Michigan State University, East Lansing, MI, Amino acid and mineral nitrogen availability along a chronosequence of Michigan jack pine stands.

FULL ABSTRACT

10:50 AM

Buckeridge, Kate*,1, Grogan, Paul1, 1 Queen's University, Kingston, ON, Canada, Winter soil microbial activity and limitations in arctic birch-tussock tundra.

FULL ABSTRACT