Effects of vegetation season and needles’ position in spruce canopy on emissions of volatile organic compounds

0456336 - ÚVGZ 2016 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Večeřová, Kristýna - Holišová, Petra - Pallozi, E. - Guidolotti, G. - Calfapietra, Carlo - Urban, Otmar
Effects of vegetation season and needles’ position in spruce canopy on emissions of volatile organic compounds.
Global Change: A Complex Challenge : Conference Proceedings. Brno: Global Change Research Centre, The Czech Academy of Sciences, v. v. i., 2015 - (Urban, O.; Šprtová, M.; Klem, K.), s. 130-133. ISBN 978-80-87902-10-3.
[Global Change: A Complex Challenge /4th/. Brno (CZ), 23.03.2015-24.03.2015]
Grant CEP: GA MŠMT(CZ) LD13031; GA MŠMT(CZ) LO1415; GA MŠMT(CZ) LM2010007
Institucionální podpora: RVO:67179843
Klíčová slova: vegetation season * spruce canopy * organic compounds
Kód oboru RIV: EH - Ekologie - společenstva

The main objective of this study was to investigate seasonal changes and vertical distribution in emissions of biogenic volatile organic compounds (BVOCs) within a Norway spruce canopy profile. Emissions were measured on current-year needles from the upper and lower canopy in early July and late August. Our results show that total BVOC emissions under standardized conditions (light intensity 1,000 µmol m–2 s–1, temperature 30°C) are higher in July than they are in August. BVOC emissions from upper canopy needles were approximately 3 times higher than were those from lower canopy needles. This difference was observed in July but not in August. The monoterpenes α-pinene, camphene, and terpinolene showed the most significant differences between emissions from upper and lower canopy needles.
Trvalý link: http://hdl.handle.net/11104/0256874