8:00 AM HENRY, HUGH¹, JEFFERIES, ROBERT¹, ¹ . Free amino acids as a source of plant nitrogen nutrition in sub-arctic salt-marsh coastal sites..

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8:15 AM Miller, Amy¹, Bowman, William¹, ¹ . Preferential uptake of N by alpine tundra species: do all species tap the same N pool?.

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8:30 AM BOYCE, RICHARD¹, LARSON, JENNIFER¹, SANFORD, ROBERT¹, ¹ . Nitrogen and phosphorus photosynthetic colimitation in Rocky Mountain bristlecone pine..

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9:00 AM MEASON, DEAN¹, WILL, RODNEY¹, MARKEWITZ, DANIEL¹, ¹ . Litter layer nitrogen release in fertilized and unfertilized Pinus taeda L. stands in southeastern Georgia..

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9:15 AM Ellsworth, David^1,2, Lai, Chun-Ta², Kull, Olevi³, Katul, Gabriel², ^{1 2 3} . Coupling of canopy photosynthesis and nitrogen distribution in a pine forest predicted by a N turnover model..

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9:30 AM HAINES, BRUCE¹, POTTER, ROBERT¹, ¹ . Calcium and phosphorus uptake by plants in secondary succession at Luquillo Experimental Forest, Puerto Rico, USA..

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9:45 AM Kinraide, Thomas¹, ¹ . Toxicity factors in acidic forest soils. Implications for tolerance mechanisms..

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10:00 AM . Break..

10:15 AM DRENOVSKY, REBECCA¹, RICHARDS, JAMES¹, ¹ . Nutrient addition increases plant fitness in the desert halophyte, Sarcobatus vermiculatus..

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10:30 AM Craine, Joseph¹, ¹ . Steady-state resource preemption: a new hypothesis for nutrient competition..

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10:45 AM Alpert, Peter¹, Holzapfel, Claus¹, Slominski, Clayton¹, ¹ . Consequences of intraspecific variation in clonal integration: in a patchy world, generosity pays..

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11:00 AM Zimmerman, Gregory¹, Bell, F Wayne², ^{1 2} . Allometric plasticity of three early successional tree species along a nitrogen gradient..

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11:15 AM Throop, Heather¹, Lerdau, Manuel¹, O'Rourke, Megan ¹, ¹ . Influences of nitrogen deposition on an annual plant: Integrating resource availability and herbivory..

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11:30 AM Rose, Cathy¹, Kavanagh, Kathleen², Waring, Richard ¹, Manter, Dan¹, ^{1 2} . Nitrogen surplus in Douglas-fir forests: Consequences for susceptibility to an endemic foliar fungus..

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