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The impact of drought on total ozone flux in a mountain Norway spruce forest
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SYSNO ASEP 0532003 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The impact of drought on total ozone flux in a mountain Norway spruce forest Author(s) Agyei, Thomas (UEK-B) ORCID, SAI, RID
Juráň, Stanislav (UEK-B) RID, SAI
Ofori-Amanfo, Kojo Kwakye (UEK-B) SAI, ORCID, RID
Šigut, Ladislav (UEK-B) RID, ORCID, SAI
Urban, Otmar (UEK-B) RID, ORCID, SAI
Marek, Michal V. (UEK-B) RID, ORCID, SAINumber of authors 6 Source Title Journal of Forest Science. - : Czech Academy of Agricultural Sciences - ISSN 1212-4834
Roč. 66, č. 7 (2020), s. 280-287Number of pages 8 s. Language eng - English Country CZ - Czech Republic Keywords volatile organic-compounds ; dry deposition ; ponderosa pine ; climate-change ; atmosphere ; vegetation ; chemistry ; exchange ; europe ; sulfur Subject RIV GK - Forestry OECD category Forestry R&D Projects EF16_013/0001609 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_027/0008137 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure CzeCOS III - 90123 - Ústav výzkumu globální změny AV ČR, v. v. i. Method of publishing Open access Institutional support UEK-B - RVO:86652079 UT WOS 000553581700002 EID SCOPUS 85091194857 DOI https://doi.org/10.17221/129/2019-JFS Annotation In order to understand the impact of summer drought on dry deposition of tropospheric ozone (O-3), we compared severe and mild drought periods of summer 2018 in a mountain Norway spruce forest at Bily Kriz, Beskydy Mts. An eddy covariance technique was applied to measure diurnal courses of the ecosystem O-3 and CO2 fluxes. Low O-3 deposition was recorded in the morning and evening, while the highest CO2 and O-3 fluxes were recorded during the central hours of the day. Total O-3 deposition during severe drought (soil humidity 13%) was significantly higher than the deposition during the mild drought period (soil humidity 19%). Our data indicate that high vapour pressure deficit and low soil humidity during severe drought led to the stomatal closure, while non-stomatal O-3 deposition, associated with chemical reactions of O-3 with NO and volatile organic compounds, are responsible for higher total O-3 deposition during the severe drought period. Therefore, we assume that under severe drought stomatal O-3 uptake decreases but non-stomatal depositions to forest ecosystems substantially increase. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2021 Electronic address https://www.agriculturejournals.cz/web/jfs.htm?type=article&id=129_2019-JFS
Number of the records: 1