Scaling ozone effects from seedlings to forest trees

• DOI: 10.1046/j.1469-8137.2001.00007.x
• Publication Date: 2003-03-12T15:33:10Z
• Authors: Lisa Samuelson; J. Michael Kelly
• Keywords: 0106 biological sciences; 13. Climate action; 15. Life on land; 01 natural sciences

Summary Biospheric ozone has become a widely distributed air pollutant, and growing body of research indicates that impacts forest health productivity. Ozone effects are mediated by the concentration present in external environment movement into leaf via stoma. The cumulative dose received plant is, simplest terms, function ambient stomatal conductance to water vapor. This relationship is important understanding flux subsequent response plants. Here, current progress uptake juvenile mature trees examined. Through an analysis two long‐term case studies, significant uncertainty assessing on forests pinpointed be scaling sensitivity from controlled seedling studies large trees. A rigorous statistical monitoring approach, which includes as cause variable, may provide missing information processes known risk assessment Contents 21 I. Introduction 22 1. Background 2. Characterization exposure 3. need for 23 II. Scaling tree, evidence Quercus rubra study 24 Study background Facilities measurements dynamics 4. Above‐ground 25 5. Below‐ground 26 6. process modelling exercise 27 7. Conclusions 28 III. chamber forest, field 29 Field sites 30 Stomatal 32 IV. Evidence 33 V. Concluding remarks 36 Acknowledgements 37 References