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Ecology, 87(1), 2006, pp. 262â263 2006 by the Ecological Society of America ATMOSPHERIC CO2 CHANGES: PAST Ehleringer, James R., Thure E. Cerling, M. Denise Dearing, editors. 2005. A history of atmospheric CO2 its effects on plants, animals, ecosystems. Ecological Studies, Volume 177. Springer, New York. xviii 530 p. $149.00, ISBN: 0-387-22069-0 (acid-free paper). FUTURE Key words: atmospheric CO2; C3 C4 photosynthesis; herbivory CO2; global climate change; paleoecology. Changes in the CO2 content of the atmosphere are an integral component of the past future ecology of our planet. Studies of the paleoatmosphere suggest that CO2 concentrations have changed dramatically over geologic time, ranging from as low as 180 ppm to perhaps as much as 5000 ppm over the last 500 million years. Measurements of our current atmosphere show that CO2 concentrations are rising rapidly, are higher now than they have been in the past 400 000 years. If CO2 continues to increase at its current rate, concentrations will reach 700 ppm or more by the end of the century. Therefore, species ecosystems around us today have arisen in, been shaped by, a dynamic CO2 environment. A perspective on ecological responses to past CO2 changes may help us underst how
Ecology – Ecological Society of America
Published: Jan 1, 2006
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