Oral Session #28: Effects of N Deposition in Ecosystems.

Presiding: C.C. Beno, University of Wisconsin-Stevens Point.
Monday, August 7, 2000
1:30 PM to 5:00 PM
Wasatch Room - Cliff Lodge

1:30 PM	Immobilization of nitrate and nitrite in temperate forest soils: Microbial and abiotic processes and potential interaction. DAIL, D.B. , E.A. DAVIDSON and J. CHOROVER
1:45 PM	Interactions of soil hydrologic and biotic processes in regulating nitrate retention in wet tropical forests: Comparisons using isotope tracers. LOHSE, K.A. , H. FARRINGTON and J. MOEN, P. MATSON, G. ASNER
2:00 PM	Simulated effects of elevated nitrogen deposition on Colorado Englemann spruce forests. RUETH, H.M. , W.J. PARTON
2:15 PM	Atmospheric nitrogen loading at a Rocky Mountain conifer forest: Perturbation of the natural nitrogen cycle and potential carbon storage enhancement. SIEVERING, H.S. , T. KELLY and G. MCCONVILLE, A. TURNIPSEED
2:30 PM	Impacts of increased nitrogen deposition on nitrogen cycling and leaching losses of dissolved nitrogen from lodgepole pine and trembling aspen stands. CARRASCO, J.J. , C.A. WESSMAN
2:45 PM	Nitrogen deposition and NPP in temperate forests: The role of leaf physiology, foliage turnover and canopy structure. BERNTSON, G. , G. BAUER and R. MINOCHA
3:00 PM	Break
3:15 PM	Nitrogen deposition influences regeneration of coniferous and broad-leaved tree species in contrasting stand types. CATOVSKY, S. , F.A. BAZZAZ
3:30 PM	Longterm effects of N deposition and elevated CO2 on resource competition of temperate forest seedlings: A community response experiment using open top chambers. BAUER*, G.A. , G.M. BERNTSON and F.A. BAZZAZ
3:45 PM	Effects of harvesting on soil nitrogen dynamics in a nitrogen-saturated hardwood forest. GILLIAM, F.S. , M.B. ADAMS
4:00 PM	Response of foliar N and P to excessive N deposition in a mid-Appalachian hardwood forest. MAY, J.D. , S.B. BURDETTE and F.S. GILLIAM, M.B. ADAMS
4:15 PM	Changes in the carbon and nitrogen budgets of Eastern US forest ecosystems BRASWELL, B.H. , E.A. HOLLAND and J.C. NEFF
4:30 PM	Impacts of nitrogen deposition on plant growth and insect herbivory. THROOP, H. , M. LERDAU
4:45 PM	Organic nitrogen deposition; Is it time to reconsider the measurement of N in precipitation? NEFF, J. , E. HOLLAND and F. DENTENER, K. RUSSELL, W. MCDOWELL