@article{40c3613191a04d7cb824021ca773a818,
title = "Enhanced ozone strongly reduces carbon sink strength of adult beech (Fagus sylvatica) - Resume from the free-air fumigation study at Kranzberg Forest",
abstract = " Ground-level ozone (O 3 ) has gained awareness as an agent of climate change. In this respect, key results are comprehended from a unique 8-year free-air O 3 -fumigation experiment, conducted on adult beech (Fagus sylvatica) at Kranzberg Forest (Germany). A novel canopy O 3 exposure methodology was employed that allowed whole-tree assessment in situ under twice-ambient O 3 levels. Elevated O 3 significantly weakened the C sink strength of the tree-soil system as evidenced by lowered photosynthesis and 44\% reduction in whole-stem growth, but increased soil respiration. Associated effects in leaves and roots at the gene, cell and organ level varied from year to year, with drought being a crucial determinant of O 3 responsiveness. Regarding adult individuals of a late-successional tree species, empirical proof is provided first time in relation to recent modelling predictions that enhanced ground-level O 3 can substantially mitigate the C sequestration of forests in view of climate change.",
keywords = "Fagus sylvatica, Flux, Ozone, Soil respiration, Stem production",
author = "R. Matyssek and G. Wieser and R. Ceulemans and H. Rennenberg and H. Pretzsch and K. Haberer and M. L{\"o}w and Nunn, \{A. J.\} and H. Werner and P. Wipfler and W. O{\ss}wald and P. Nikolova and Hanke, \{D. E.\} and H. Kraigher and M. Tausz and G. Bahnweg and M. Kitao and J. Dieler and H. Sandermann and K. Herbinger and T. Grebenc and M. Blumenr{\"o}ther and G. Deckmyn and Grams, \{T. E.E.\} and C. Heerdt and M. Leuchner and P. Fabian and H{\"a}berle, \{K. H.\}",
note = "Funding Information: This study is based on the CASIROZ project (“The ca rbon si nk strength of beech in a changing environment: Experimental r isk assessment by mitigation of chronic oz one impact{\textquoteright}{\textquoteright}) which was supported by the European Commission – Research Directorate-General, Environment Programme, “Natural Resources Management and Services” (EVK2-2002-00165, Ecosystem Vulnerability). In addition, research was supported by the German Research Foundation (DFG) through SFB 607 “Growth and Parasite Defense – Competition for Resources in Economic Plants from Agronomy and Forestry”. The research at the University of Antwerp was further supported by the Fund for Scientific Research Flanders, and by the Research Center of Excellence ECO (BOF-UA). Technical assistance was provided by Ing. Thomas Feuerbach and Mr. Ivan Nikolov.",
year = "2010",
month = aug,
doi = "10.1016/j.envpol.2010.05.009",
language = "English",
volume = "158",
pages = "2527--2532",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Ltd.",
number = "8",
}