* Will rising CO2 alter the importance of environmental stress in natural and agricultural ecosystems?
* Will environmental stress on plants reduce their capacity to remove CO2 from the atmosphere?
* Are some stresses more important than others as we concern ourselves with global change?
* Can we develop predictive models useful for scientists and policy-makers?
* Where should future research efforts be focused?
Evolutionary, Scaling, and Modeling Studies of CO2 and Stress Interactions:R.F. Sage and S.A. Cowling, Implications of Stress in Low CO2 Atmospheres of the Past: Are Today's Plants Too Conservative for a High CO2 World?Y. Luo, Scaling Against Environmental and Biological Variability: A Case Study.G.I. Agren, G.R. Shaver, and E.B. Rastetter, Nutrients: Dynamics and Limitations.R.E. McMurtrie and R.C. Dewar, Ecosystem Modeling of the CO2-Response of Forests on Sites Limited by Nitrogent and Water.
Synthesis and Summary:C.B. Field, The Modulation of Ecosystem CO2 Responses by Stress: Toward a Synthesis.Y. Luo, J. Canadell, and H.A. Mooney, Interactive Effects of Carbon Dioxide and Environmental Stress on Plants and Ecosystems: A Synthesis and Summary.