TAILIEUCHUNG - A History of Atmospheric CO2 and Its Effects on Plants, Animals, and Ecosystems

Our planet’s atmosphere is thought to have changed gradually and over a very wide range of CO2 concentrations throughout history. From ancient atmospheric gases trapped in ice bubbles, we have strong evidence indicating that atmospheric CO2 values reached minimum concentrations of approximately 180 parts per million during the Last Glacial Maximum, which was only 15,000 years ago. At the other extreme, calculations suggest that some 500 million years ago the atmospheric CO2 concentrations may have been about 4000 to 5000 parts per million | Ecological Studies 177 James R. Ehleringer Thure E. Cerling M. Denise Dearing Editors A History of Atmospheric CO2 and Its Effects on Plants Animals and Ecosystems Ecological Studies Vol. 177 Analysis and Synthesis Edited by Baldwin Jena Germany . Caldwell Logan UsA G. Heldmaier Marburg Germany Robert B. Jackson Durham USA . Lange Wurzburg Germany H. A. Mooney Stanford USA . Schulze Jena Germany U. Sommer Kiel Germany James R. Ehleringer Thure E. Cerling M. Denise Dearing Editors A History of Atmospheric CO2 and Its Effects on Plants Animals and Ecosystems With 151 Illustrations .

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