Advances in understanding ozone impact on forest trees: Messages from novel phytotron and free-air fumigation studies

摘要: Recent evidence from novel phytotron and free-air ozone (O3) fumigation experiments in Europe America on forest tree species is highlighted relation to previous chamber studies. Differences O3 sensitivity between pioneer climax are examined viewed for trees growing at the harsh alpine timberline ecotone. As apparently counteracts positive effects of elevated CO2 mitigates productivity increases, response governed by genotype, competitors, ontogeny rather than per se. Complexity responsiveness increased under influence pathogens herbivores. The new does not conflict principle with findings that, however, pointed a low ecological significance. This knowledge trees' beyond juvenile stage plantations forests nevertheless implies limited predictability due complexity biotic abiotic interactions. Unravelling underlying mechanisms mandatory assessing risks as an important component climate change scenarios.