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This study aimed to explore if changes in stem increment of Scots pines (Pinus sylvestris L.) could be related to changes in ambient ozone concentration when the impact of tree dendrometric parameters (age, diameter) and crown defoliation are accounted for. More than 200 dominant and codominant trees from 12 pine stands, for which crown defoliation had been assessed since 1994, were chosen for increment boring and basal area increment computing. Stands are located in Lithuanian national parks, where since 1994-95 Integrated Monitoring Stations have been operating. Findings of the study provide statistical evidence that peak concentrations of ambient ozone (O3) can have a negative impact on pine tree stem growth under field conditions where O3 exposure is below phytotoxic levels.

the scientific world journal/thescientificworldjournal

Did the Ambient Ozone Affect Stem Increment of Scots Pines (<i>Pinus sylvestris</i>L.) on Territories under Regional Pollution Load? Step III of Lithuanian Studies

Did the Ambient Ozone Affect Stem Increment of Scots Pines (Pinus sylvestrisL.) on Territories under Regional Pollution Load? Step III of Lithuanian Studies