Abstract
The diurnal pollen pattern of <em>Artemisia </em>seems to be similar in many regions in Central and Eastern Europe, with its highest concentration before noon. This research is a continuation of a preliminary study that was carried out in Rzeszów 10 years ago. The Spearman nonparametric correlation test and the angular-linear correlation were used to verify assumptions about the influence of meteorological parameters on daily and hourly variations of <em>Artemisia </em>pollen concentrations in the atmosphere. The results showed that the patterns of hourly and daily <em>Artemisia </em>pollen concentration in the air of Rzeszów did not differ significantly from the results obtained in previous years, except PI value which was significantly lower. The majority of <em>Artemisia </em>pollen grains appeared in the air before noon and in the early afternoon. However, on some days the peaks occurred around midnight. The hourly and daily <em>Artemisia </em>pollen concentrations were strongly influenced by temperature and relative humidity. Daily concentration was also influenced by radiation and sunshine duration. We do not exclude other factors, such as secondary deposition and long distance transport. We proposed circular statistics as an appropriate method of analysis of the relationship between meteorological parameters and hourly airborne pollen concentration.
Highlights
The genus Artemisia L. included in the Asteraceae family comprises between 200 to 600 species, depending on the literature data
Due to the lack of days conforming to the above-mentioned criteria for diurnal analysis, the year 2010 was not taken into consideration for further analysis
The average maximum pollen count was between 10.00–12.00 in 2011–2012, whereas in 2013 it shifted towards 14.00–16.00 (Tab. 2)
Summary
The genus Artemisia L. included in the Asteraceae family comprises between 200 to 600 species, depending on the literature data. Artemisia is mostly distributed in the Northern hemisphere, from sea level to high mountains and from arid zones to wetlands [1, 2]. E.g. A_absinthium L. are useful in traditional and modern medicine [3]. Many mugwort species are prone to causing allergies. The most important Artemisia species are those considered as synanthropic and pioneer plants in ruderal places on disturbed soils. They occupy dry areas, grasslands, agricultural fields, roadsides, fallow ground and wasteland [5]. Endemic and endangered mugwort species are known, such as those in Sierra Nevada [6]
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