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    Author(s): Svetlana Bičárová; Zuzana Sitková; Hana Pavlendová; Peter Fleischer; Peter Fleischer; Andrzej Bytnerowicz
    Date: 2019
    Source: Atmospheric Pollution Research. 10(1): 283-293
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (2.0 MB)

    Description

    Montane forests in the High Tatra Mountains are exposed to high ambient ozone (O3) concentrations that may adversely affect the physiological processes and health of plants. This study presents the modelled results of the phytotoxic ozone dose (POD) for dwarf mountain pine (P. mugo) in 2016. POD metrics were calculated using the deposition model DO3SE, with O3 concentration and meteorological data measured in three altitudinal zones. In addition, maximal stomatal conductance (Gmax) derived from gasometric field measurement in local conditions was included in the model. Field measurements confirmed the robust performance of the DO3SE model for stomatal conductance (Gsto). The site-specific stomatal conductance response model was largely congruent with average values estimated by DO3SE, though differences in temporal Gsto distribution were observed. We determined a moderate limitation of O3 uptake due to environmental factors (fENVI) such as air temperature and relative humidity, solar radiation, and soil water availability. It appears that Gmax is more relevant for annual POD than fENVI in the temperate mountain forest. The results indicate a high level of POD and O3 uptake by P. mugo in the High Tatra Mountains, which corresponds with the O3-induced visible injury symptoms observed. We also identified visible O3 injury in P. mugo needles, which was more prevalent among the two-year old needles than younger individuals.

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    Citation

    Bičárová, Svetlana; Sitková, Zuzana; Pavlendová, Hana; Fleischer, Peter; Fleischer, Peter; Bytnerowicz, Andrzej. 2019. The role of environmental factors in ozone uptake of Pinus mugo Turra. Atmospheric Pollution Research. 10(1): 283-293. https://doi.org/10.1016/j.apr.2018.08.003.

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    Keywords

    Ambient ozone, Phytotoxic ozone dose, Stomatal conductance, Site-specific model, Visible O3 injury

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