Ozone influence on native vegetation in the Jizerske hory Mts. of the Czech Republic: results based on ozone exposure and ozone-induced visible symptoms

Hůnová, Iva; Matoušková, Leona; Srněnský, Radek; Koželková, Klára

doi:10.1007/s10661-011-1935-8

Cited by 16 publications

(13 citation statements)

References 43 publications

(57 reference statements)

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“…Though injury was found, the extent of visible symptoms was much less than assumed considering the recorded O3 exposure (Matousková et al 2010). Moreover, after verification of symptoms by the Ozone Validation Centre for Central Europe (Gün-thardt-Goerg & Menard 2008), visible injury was confirmed as O3-induced on the leaves of only two species, Fagus sylvatica and Rubus idaeus (Hůnová et al 2011). This is in agreement with earlier reports from many other authors (e.g., Ferretti et al 2007, Matyssek et al 2007, Waldner et al 2007, Baumgarten et al 2009, Bussotti & Ferretti 2009, that the O3 exposure is rather inconsistent with observed ozone injury.…”

Section: Discussionmentioning

confidence: 90%

Ambient ozone phytotoxic potential over the Czech forests as assessed by AOT40

Hůnová¹,

Schreiberová²

2012

iForest

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© iForest -Biogeosciences and Forestry IntroductionAmbient ozone (O3) has been a widely studied air pollutant for many years due to its potential toxicity for all living organisms (Felzer et al. 2007, Cape 2008, Iriti & Faoro 2008. It is an important gas playing a key role in atmospheric chemistry (Seinfeldt & Pandis 1998). It contributes to the oxidative power of atmosphere which is essential for scavenging many pollutants from the air. Moreover, due to its absorption-radiation abilities, O3 is an important greenhouse gas (Singh & Fabian 2003, IPCC 2007. There are important mutual interactions between O3 and climate change (Isaksen 2003), which are not fully understood yet. The urgent need to address the knowledge gaps in interactions between air pollution, climate change and forests has been recently stressed (Serengil et al. 2011, Matyssek et al. 2012.Ozone represents one of the most prominent air pollution problems in Europe (De Leeuw & De Paus 2001, EEA 2010. Environmental O3 quality standards are exceeded over vast areas of Europe (Horálek et al. , 2009). Due to its phytotoxicity, O3 is still considered to be the most important air pollutant for forests (Paoletti et al. 2010). Due to the fact that O3 is a secondary pollutant formed from precursors during complex photochemical reactions and to the highly non-linear nature of O3 chemistry, it is and will be very difficult to decrease its ambient concentrations (Seinfeldt & Pandis 1998).Comparison of O3 levels with those measured a century ago indicates that current levels have increased by approximately two times. European measurements between 1850 and 1900 were found to be in the range of 17-23 ppb (Bojkov 1986). Modern day annual average background O3 concentrations over the mid-latitudes of the northern Hemisphere range between approximately 20-45 ppb, with variability influenced by geographic location, altitude and extent of anthropogenic impacts (Vingarzan 2004). Generally, three types of patterns in ambient O3 have been apparent recently: (1) an increase in the extent of O3 impact and the forest areas at risk; (2) a decrease in maximum 1-h O3 concentrations, at least in the northern hemisphere countries which have introduced O3 precursor control programs; and (3) an increase in background O3 concentrations over much of the world (Percy et al. 2003). It is not an easy task to assess the time trends of O3: the inter-annual variability is fairly high, so that long time series, which mostly are not available (Jonson et al. 2006), are needed to detect trends.In the Czech Republic (CR), ambient air pollution has been perceived as a major environmental problem since the 1950s, particularly due to extremely high emissions of SO2 and particulate matter from large powergenerating sources (Moldan & Schnoor 1992). Pollution in the form of surface O3 was recognized as an issue as late as in the 1990s. Its levels are regularly measured within the framework of a national ambient air quality network run by the Czech Hydrometeorological Institute (CHMI) since 1993. Fro...

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Section: Discussionmentioning

confidence: 90%

Ambient ozone phytotoxic potential over the Czech forests as assessed by AOT40

Hůnová¹,

Schreiberová²

2012

iForest

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“…In our earlier study focused on examining visible symptoms on native vegetation growing in the area, the damage we found, however, was much less than expected considering the recorded O 3 levels (Matoušková et al 2010). The symptoms attributable to O 3 were scarce and confirmed microscopically as ozone-induced (Günthardt-Goerg and Vollenweider 2007) only on two species, Fagus sylvatica and Rubus idaeus (Hůnová et al 2011;Vlasáková-Matoušková and Hůnová 2015). The crucial question regarding this aspect is amount of ozone (dose) getting inside plants (Launiainen et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…At one site (Pod Jizerou-coded as BI^) we established two samplers about 20 m apart, one in the middle of the forest clearing and the other one at the forest edge, to investigate the influence of trees on O 3 concentrations. The study area and measuring sites are described in detail by Hůnová et al (2011) in a paper studying O 3 exposure and ozone-induced visible symptoms on native vegetation.…”

Section: Study Areamentioning

confidence: 99%

Spatial and temporal trends of ozone distribution in the Jizerské hory Mountains of the Czech Republic

Hůnová

Stoklasová

Schovánková

et al. 2015

Environ Sci Pollut Res

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We present results of the 5-year monitoring of ambient O3 concentrations in a Central European medium altitude mountain forested area. O3 levels were measured at 11 sites between 714 and 1000 m a.s.l. in 2006-2010 vegetation seasons using Ogawa diffusive samplers. Our results reveal that O3 exposure in the Jizerské hory Mts. was relatively high and comparable with polluted sites in Southern Europe and in higher altitudes. O3 concentrations differed significantly between individual sites and in individual years. O3 concentrations showed clear dependence on altitude at sites with similar aspect. Its gradient for the entire 5-year period under review equaled 3.5 ppb/100 m of altitude, ranging between nearly 5 ppb/100 m of altitude in 2006 and nearly 3 ppb/100 m of altitude in 2010. O3 concentrations at the site with northern aspect were consistently significantly lower than at the site at similar altitude with southern aspect. O3 concentrations measured at the forest edge were consistently lower than those measured at the same site but at the forest clearing. It is evident that the macro-setting of the O3 monitoring site is crucial for obtaining reliable results with high representativeness for the area.

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“…Šikýřová (2005) Matoušková (2005) Habermann (2006), Holečková (2006) Matoušková (2011), Hůnová et al (2011Hůnová et al ( , 2016 …”

Section: Referencesunclassified

Measurements of ground-level ozone in Czech mountain forests: what we have learnt from using diffusive samplers

Hůnová¹

2017

European Journal of Environmental Sciences

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Ground-level ozone (O 3 ) is a key atmospheric constituent participating in many important atmospheric reactions, and has many negative effects both on human health and the environment. We have measured O 3 ambient concentrations in four Czech rural areas of great natural value: the Orlické hory Mts., Novohradské hory Mts., České Švýcarsko and Jizerské hory Mts. For our measurement we used Ogawa diffusive samplers. The measurements were carried out during the vegetations seasons of 2004-2010, the samplers were exposed for two-weeks periods and the filters analyzed in the CHMI laboratory. The aim of this paper is to summarize the experience we have of using the diffusive sampling method in the field.

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Ozone influence on native vegetation in the Jizerske hory Mts. of the Czech Republic: results based on ozone exposure and ozone-induced visible symptoms

Cited by 16 publications

References 43 publications

Ambient ozone phytotoxic potential over the Czech forests as assessed by AOT40

Ambient ozone phytotoxic potential over the Czech forests as assessed by AOT40

Spatial and temporal trends of ozone distribution in the Jizerské hory Mountains of the Czech Republic

Measurements of ground-level ozone in Czech mountain forests: what we have learnt from using diffusive samplers

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