5 7/8 X 8 7/8 in Introduction to the Book Series. List of Contributors. Foreword and Ackn owledgements. Preface (R.A. Birdsey, USFS Global Change Program). Issues, Challenges and Risks. 1. Air pollution and global cha nge: A double challenge to forest ecosystems (D.F. Karnosky, K.E. Percy et al.). 2. What is the role of demographic factors in air poll ution and forests? (D.S. Shriner, D.F. Karnosky). 3. Changing atmospher ic carbon dioxide: A threat or benefit? (D.F. Karnosky, P. Sharma et al.). 4. Tropopsheric ozone: A continuing threat to global forests ? (K.E. Percy, A.H. Legge, S.V. Krupa). Tropospheric Ozone. 5. Regional scale risk assessment of ozone and forests (G. Gerosa, A. Ballarin-Denti).
6. Limitations and perspectives about sc aling ozone impacts in trees (T.E. Kolb, R. Matyssek). 7. Simulating the growth response of aspen to elevated ozone: A mechanistic approach from leaf-level photosynthesis to complex architecture (M.J. Martin, G .E. Host et al.). 8. Ozone affects the fitness of trembling asp en (D.F. Karnosky, K. Percy et al.). 9. Responses of Aleppo pin