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Carbon flux and growth in mature deciduous forest trees exposed to elevated CO2

Körner, Christian and Asshoff, Roman and Bignucolo, Olivier and Hättenschwiler, Stephan and Keel, Sonja G. and Pelaez-Riedl, Susanna and Pepin, Steeve and Siegwolf, Rolf T. W. and Zotz, Gerhard. (2005) Carbon flux and growth in mature deciduous forest trees exposed to elevated CO2. Science, Vol. 309, H. 5739. pp. 1360-1362.

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Official URL: http://edoc.unibas.ch/dok/A5249057

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Abstract

Whether rising atmospheric carbon dioxide (CO) concentrations will cause forests to grow faster and store more carbon is an open question. Using free air CO2 release in combination with a canopy crane, we found an immediate and sustained enhancement of carbon flux through 35-meter-tall temperate forest trees when exposed to elevated CO2 However, there was no overall stimulation in stem growth and leaf titter production after 4 years. Photosynthetic capacity was not reduced, leaf chemistry changes were minor, and tree species differed in their responses. Although growing vigorously, these trees did not accrete more biomass carbon in stems in response to elevated CO2, thus challenging projections of growth responses derived from tests with smaller trees.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Ehemalige Einheiten Umweltwissenschaften > Pflanzenökologie (Körner)
UniBasel Contributors:Körner, Christian and Bignucolo, Olivier and Riedl, Susanna
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Association for the Advancement of Science
ISSN:0036-8075
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:44

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