@article{cce89097eac042568cb63decbe038c83,
title = "Advances in understanding ozone impact on forest trees: Messages from novel phytotron and free-air fumigation studies",
abstract = "Recent evidence from novel phytotron and free-air ozone (O3) fumigation experiments in Europe and America on forest tree species is highlighted in relation to previous chamber studies. Differences in O3 sensitivity between pioneer and climax species are examined and viewed for trees growing at the harsh alpine timberline ecotone. As O3 apparently counteracts positive effects of elevated CO2 and mitigates productivity increases, response is governed by genotype, competitors, and ontogeny rather than species per se. Complexity in O3 responsiveness increased under the influence of pathogens and herbivores. The new evidence does not conflict in principle with previous findings that, however, pointed to a low ecological significance. This new knowledge on trees' O3 responsiveness beyond the juvenile stage in plantations and forests nevertheless implies limited predictability due to complexity in biotic and abiotic interactions. Unravelling underlying mechanisms is mandatory for assessing O3 risks as an important component of climate change scenarios.",
keywords = "Biotic impact, Free-air O/CO fumigation, Phytotrons, Pioneer/climax tree species, Timberline",
author = "R. Matyssek and Karnosky, \{D. F.\} and G. Wieser and K. Percy and E. Oksanen and Grams, \{T. E.E.\} and M. Kubiske and D. Hanke and H. Pretzsch",
note = "Funding Information: Studies reported here were financially supported by Deutsche Forschungsgemeinschaft (DFG) through Sonderforschungsbereich SFB 607 “Growth and Parasite Defence – Competition for Resources in Economic Plants from Agronomy and Forestry” and by the European Commission - Research Directorate-General, Environment Programme, “Natural Resources Management and Services” (EVK2-2002-00165, Ecosystem Vulnerability) through 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}). The Aspen FACE was principally supported by the U.S. Department of Energy's Office of Biological and Environmental Research, Grant No. DE-FG02-96ER62125. The Academy of Finland supported research reported here through projects 78743, 109933 and 124828. All this support is gratefully acknowledged. The constructive suggestions by three anonymous reviewers are highly appreciated.",
year = "2010",
month = jun,
doi = "10.1016/j.envpol.2009.11.033",
language = "English",
volume = "158",
pages = "1990--2006",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Ltd.",
number = "6",
}