Footprint areas of pollen from alder (Alnus) and birch (Betula) in the UK (Worcester) and Poland (Wrocław) during 2005–2014

Skjøth, Carsten Ambelas; Biliñska, Daria; Werner, Małgorzata; Malkiewicz, Małgorzata; Adams‐Groom, Beverley; Kryza, Maciej; Drzeniecka-Osiadacz, Anetta

doi:10.5586/aa.2015.044

Cited by 18 publications

(21 citation statements)

References 47 publications

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“…Analysis of trajectories is widely used in order to identify the most probable location of air pollution sources (Cesari et al 2014;Godłowska et al 2015) as well as any pollen source location or movement (Smith et al 2005;Stach et al 2007;Bilińska et al 2017). The back-trajectories were used in a study conducted by Skjøth et al (2015) which investigated the source of Betula pollen in Wrocław and Worcester. Their study showed that the pollen concentration in the air is mainly provided by local trees (Skjøth et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…The back-trajectories were used in a study conducted by Skjøth et al (2015) which investigated the source of Betula pollen in Wrocław and Worcester. Their study showed that the pollen concentration in the air is mainly provided by local trees (Skjøth et al 2015). According to Myszkowska et al (2010), Alnus is sensitive to wind speed, which promotes the release and distribution of its pollen.…”

Section: Discussionmentioning

confidence: 99%

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The variability of pollen concentrations at two stations in the city of Wrocław in Poland

et al. 2019

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The aim of the study was to investigate the variability of Alnus and Corylus pollen concentrations at two stations located in the city of Wrocław, Poland-one at the city centre and the other 4 km from the city centre. Our goal was to compare measurements from these stations in relation to meteorology and land cover. We used Spearman's correlation coefficient to investigate any dependence between meteorological factors and pollen concentration. Additionally, to check the relation between the direction of inflow of air masses and pollen concentration, we calculated the backward trajectories using the HYSPLIT model. The results have shown that despite the short distance between the stations, the characteristic of the pollen season is different for both stations (i.a. date of start and end of pollen season, duration of the season). The Spearman's correlation coefficient between relative humidity and air temperature and pollen concentration was found to be statistically significant. The backward trajectories calculated with HYSPLIT suggested a different origin of air masses between stations for high-concentration episodes in the case of Alnus. Our study has shown that analysis of meteorological conditions and influence of air transport into pollen concentration makes it possible to ascertain the reasons for differences in pollen level at these two stations, both of which are located in the same climatological domain. The study also shows that the aerobiological condition may change significantly over a short distance, which is a major challenge, for example, for pollen emission, transport, and concentration modelling.Keywords Pollen Á HYSPLIT Á Meteorological conditions Á Back-trajectories IntroductionCorylus (hazel) and Alnus (alder) are trees which release first pollen grains that are measured in the air of Poland each year (Puc and Kasprzyk 2013). According to research conducted by Rapiejko et al. (2007) in Poland, the first symptoms of allergy of sensitized people to these taxa appear in low concentrations of pollen: for hazel, the threshold value is 35 pollen grains per cubic meter of air (pollen grains m -3 ) and for alder 45 pollen grains m -3 , whereas symptoms for all sensitized people are observed at slightly higher pollen concentration amounting to 80 pollen grains m -3 in the case of Corylus and 85 pollen grains m -3 in the case of Alnus.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The variability of pollen concentrations at two stations in the city of Wrocław in Poland

et al. 2019

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“…The approach of matching nearby meteorological stations has worked well in a number of studies on airborne spores [10] and pollen [11] when the focus is on overall climate in specific regions of Europe including the UK (e.g., [12]). Here the assumption that the mean monthly air temperature reflects the temperature in the aquatic environment in the nurseries assessed seems also to have worked well.…”

Section: Discussionmentioning

confidence: 99%

A simple model describes development of early peaks in oomycete zoospore inoculum detected in southern UK outdoors horticultural reservoirs

Pettitt

Skjøth

2016

Acta Agrobot

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The numbers of water-borne oomycete propagules in outdoor reservoirs used in horticultural nurseries within the UK are investigated in this study. Water samples were recovered from 11 different horticultural nurseries in the southern UK during Jan-May in 2 "cool" years (2010 and 2013; winter temperatures 2.0 and 0.4°C below UK Met Office 30 year winter average, respectively) and 2 "warm" years (2008 and 2012; winter temperatures 1.2 and 0.9°C above UK Met Office 30 year winter average, respectively). Samples were analyzed for total number of oomycete colony forming units (CFU), predominantly members of the families Saprolegniaceae and Pythiaceae, and these were combined to give monthly mean counts. The numbers of CFU were investigated with respect to prevailing climate in the region: mean monthly air temperatures calculated by using daily observations from the nearest climatological station. The investigations show that the number of CFU during spring can be explained by a linear first-order equation and a statistically significant r 2 value of 0.66 with the simple relationship:where a is the rate of inoculum development with temperature T, and b is the baseload population at temperatures below T b . Despite the majority of oomycete CFU detected being non-phytopathogenic members of the Saprolegniaceae, total oomycete CFU counts are still of considerable value as indicators of irrigation water treatment efficacy and cleanliness of storage tanks. The presence/absence of Pythium spp. was also determined for all samples tested, and Pythium CFU were found to be present in the majority, the exceptions all being particularly cold months (January and February 2010, and January 2008). A simple scenario study (+2 deg C) suggests that abundance of water-borne oomycetes during spring could be affected by increased temperatures due to climate change.

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“…Similar dependencies are seen in many species, which means that small changes in temperature (such as 2°C) can have quite an impact on the daily flowering (Dosio and Paruolo 2011;Skjøth et al 2015b). In general, during the Betula pollen season the temperature is higher than during the Alnus pollen season (Skjøth et al 2015a). Puc and Kasprzyk (2013) have found a negative correlation between Alnus pollen concentration and relative humidity for most of the investigated seasons.…”

Section: Introductionmentioning

confidence: 98%

“…However, examples from Poland show that long-range transport plays a significant role in the concentrations of pollen that are rare in the Polish environment, especially Ambrosia Smith et al 2008;Kasprzyk et al 2011;Bilińska et al 2017). Concentrations of species native to Poland are mainly influenced by local sources but appear to be augmented by remote sources, particularly for Betula (Bogawski et al 2019), though only to a small degree for Alnus (Skjøth et al 2015a).…”

Section: Introductionmentioning

confidence: 99%

The influence of atmospheric circulation conditions on Betula and Alnus pollen concentrations in Wrocław, Poland

et al. 2020

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The influence of atmospheric circulation conditions on pollen concentrations of two taxons (Betula and Alnus) in Wroclaw, Poland, for the years 2005-2014 was analysed. Pollen concentration was analysed separately for twenty circulation types that were determined using objective classification. The results indicate the atmospheric circulation conditions favourable for both low and high pollen concentrations over Central Europe. Pollen concentrations vary significantly according to circulation types. The highest pollen concentrations for both taxons are typical for warm, sunny, and dry anticyclonic circulation types with anticyclone in the lower and upper troposphere, especially for types with advection from the SW. The lowest pollen concentrations are observed for cold, wet, and cloudy cyclonic types with advection from the northern sectors. There is also a positive and statistically significant trend in the frequency of circulation types favourable for high concentrations of Betula and Alnus.

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Footprint areas of pollen from alder (Alnus) and birch (Betula) in the UK (Worcester) and Poland (Wrocław) during 2005–2014

Cited by 18 publications

References 47 publications

The variability of pollen concentrations at two stations in the city of Wrocław in Poland

The variability of pollen concentrations at two stations in the city of Wrocław in Poland

A simple model describes development of early peaks in oomycete zoospore inoculum detected in southern UK outdoors horticultural reservoirs

The influence of atmospheric circulation conditions on Betula and Alnus pollen concentrations in Wrocław, Poland

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