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Open Access Green as soon as Postprint is submitted to ZB.
How closely does stem growth of adult beech (Fagus sylvatica) relate to net carbon gain under experimentally enhanced ozone stress?
Environ. Pollut. 166, 108-115 (2012)
The hypothesis was tested that O-3-induced changes in leaf-level photosynthetic parameters have the capacity of limiting the seasonal photosynthetic carbon gain of adult beech trees. To this end, canopy-level photosynthetic carbon gain and respiratory carbon loss were assessed in European beech (Fagus sylvatica) by using a physiologically based model, integrating environmental and photosynthetic parameters. The latter were derived from leaves at various canopy positions under the ambient O-3 regime, as prevailing at the forest site (control), or under an experimental twice-ambient O-3 regime (elevated O-3), as released through a free-air canopy O-3 fumigation system. Gross carbon gain at the canopy-level declined by 1.7%, while respiratory carbon loss increased by 4.6% under elevated O-3. As this outcome only partly accounts for the decline in stem growth, O-3-induced changes in allocation are referred to and discussed as crucial in quantitatively linking carbon gain with stem growth.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Free-air Fumigation; Forest Trees; Photosynthetic Capacity; Mature Trees; O-3 Exposure; Picea-abies; Young Beech; Long-term; Spruce; Light; Adult Forest Trees; Long-term Free-air O-3 Fumigation; Fagus Sylvatica; Light Gradient; Seasonal Carbon Balance; FREE-AIR FUMIGATION; FOREST TREES; PHOTOSYNTHETIC CAPACITY; MATURE TREES; O-3 EXPOSURE; PICEA-ABIES; YOUNG BEECH; LONG-TERM; SPRUCE; LIGHT
ISSN (print) / ISBN
0269-7491
e-ISSN
1873-6424
Journal
Environmental Pollution
Quellenangaben
Volume: 166,
Pages: 108-115
Publisher
Elsevier
Reviewing status
Peer reviewed
Institute(s)
Research Unit Environmental Simulation (EUS)