Dynamics of Bilogically Available C and N Across the Tundra Landscape; Forest Change in a Boreal Transition Region: Productivity, Nutrient Cycling and Biodiversity at Multiple Scales; Homeostatic Adjustment of Loblolly Pine to CO2 Enrichment in a Forest Ecosystem; Plant Nitrogen Budgets Under Elevated Carbon Dioxide Levels: Regulation by Nitrogen Absorption and Assimiliation; Predicting Decomposition Dynamics of Woody Detritus of Forest Ecosystems; Predicting the response of terrestrial ecosystems to elevated CO2 and climate change: a modeling and experimental collaboration; Shortgrass steppe ecosystem dynamics and trace gas exchange under elevated CO2