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The most frequent Artemisia species found in Poland are ruderal plants and garden or field weeds. Some species can be grown as ornamental, medicinal, or spice plants. Pollen grains of Artemisia contain strong allergens and cause allergic reactions during the late summer period. The aim of the study was to analyse the Artemisia pollen seasons in Lublin, to determine the effects of meteorological conditions on the occurrence of pollen grains of this taxon in the air and to develop statistical predictive models. The present study investigated Artemisia pollen concentrations in the air of Lublin in the period 2001–2012. Aerobiological monitoring was conducted by the standard volumetric method using a Hirst-type sampler (Lanzoni VPPS 2000). The method is currently recommended by the International Association for Aerobiology. The atmospheric Artemisia pollen season lasted on average from the second 10-day period of July to the middle of September. The highest pollen concentrations usually occurred in the first ten-day period of August. The season start date was characterized by the lowest variation, while the daily maximum pollen concentration values showed the highest variation. Forecasting models for the pollen season start date and duration as well as for the seasonal pollen index were developed using regression analysis. The obtained forecast models largely explain the variation of the season parameters. Regression analysis can be successfully used to predict the Artemisia pollen season features on the basis of meteorological data. The most frequent Artemisia species found in Poland are ruderal plants and garden or field weeds. Some species can be grown as ornamental, medicinal, or spice plants. Pollen grains of Artemisia contain strong allergens and cause allergic reactions during the late summer period. The aim of the study was to analyse the Artemisia pollen seasons in Lublin, to determine the effects of meteorological conditions on the occurrence of pollen grains of this taxon in the air and to develop statistical predictive models. The present study investigated Artemisia pollen concentrations in the air of Lublin in the period 2001–2012. Aerobiological monitoring was conducted by the standard volumetric method using a Hirst-type sampler (Lanzoni VPPS 2000). The method is currently recommended by the International Association for Aerobiology. The atmospheric Artemisia pollen season lasted on average from the second 10-day period of July to the middle of September. The highest pollen concentrations usually occurred in the first ten-day period of August. The season start date was characterized by the lowest variation, while the daily maximum pollen concentration values showed the highest variation. Forecasting models for the pollen season start date and duration as well as for the seasonal pollen index were developed using regression analysis. The obtained forecast models largely explain the variation of the season parameters. Regression analysis can be successfully used to predict the Artemisia pollen season features on the basis of meteorological data.
The study compared the occurrence of airborne pollen of 7 arboreal taxa (Corylus, Alnus, Cupressaceae/Taxaceae, Populus, Fraxinus, Betula and Carpinus) during the period 2007–2009 from two sites in Lublin city, SE Poland. The sites differed in the character of building development and surrounding vegetation. Pollen monitoring was conducted by the volumetric method using two Hirst-type samplers. Daily and intradiurnal pollen counts were determined. For all the taxa, Spearman’s test revealed statistically significant positive correlations between daily pollen fluctuations at two sites. Nevertheless, the Mann–Whitney U-test showed differences for Cupressaceae/Taxaceae, Fraxinus, Populus and Corylus between sites. The intradiurnal pattern of pollen concentration was characterized by high variation. Cupressaceae/Taxaceae and Populus, clearly differed in hourly pollen concentrations at both sites. Moreover, in the case of Betula and Alnus it was shown that a part of pollen recorded in Lublin can originate from long-distance transport. High pollen concentrations can be expected at different hours of the day. The lowest average pollen concentrations at both sites were found during morning hours at 5 and 6 a.m. Based on the obtained results, it can be concluded that data from a single pollen-sampling device are not representative of some taxa in the particular districts of the city. Average data obtained from at least two pollen samplers could provide optimum results.
An aerobiological study was conducted to investigate the quantity and quality of pollen in the atmosphere of Lublin in central-eastern Poland. Pollen monitoring was carried out in the period 2001–2012 using a Hirst-type volumetric spore trap. The atmospheric pollen season in Lublin lasted, on average, from the end of January to the beginning of October. The mean air temperature during the study period was found to be higher by 1.1 °C than the mean temperature in the period 1951–2000. 56 types of pollen of plants belonging to 41 families were identified. 28 types represented woody plants and 28 represented herbaceous plants. The study distinguished 5 plant taxa the pollen of which was present most abundantly in the air of Lublin, which altogether accounted for 73.4%: Betula, Urtica, Pinus, Poaceae, and Alnus. The mean annual pollen index was 68 706; the largest amount of pollen was recorded in April and accounted for 33.3% of the annual pollen index. The pollen calendar included 28 allergenic plant taxa. The pollen of woody plants had the highest percentage in the pollen spectrum, on average 58.4%. The parameters of the pollen calendar for Lublin were compared with the calendar for central-eastern Europe with regard to the start of the pollen season of particular taxa. The pollen calendar for Lublin was demonstrated to show greater similarity to the calendar for Münster (Germany) than to the calendar for Bratislava (Slovakia).
Many plant species respond to the climate change reported in the recent decades, which is confirmed by the results of phenological and aerobiological investigations. This paper presents characteristics of the pollen seasons of Acer spp. revealed by aerobiological analyses performed with the volumetric method in Lublin, Poland in 2001-2015. Additionally, phenological observations of flowering of four Acer species, i.e., A. negundo, A. platanoides, A. campestre, and A. pseudoplatanus, were carried out in 2011-2012. The results indicate a slight upward trend in the annual totals of Acer pollen grains. Over the last 10 years, the annual totals of Acer pollen grains have increased in comparison to the previous 5-year period. Acceleration of the onset of pollen seasons and the dates of peak days was noted. The comparison of the pollen seasons and flowering phenology of four Acer species indicates that A. negundo and A. platanoides produce the highest concentrations of pollen grains, whereas the pollen of A. campestre and A. pseudoplatanus accounts for a significantly lower proportion of the pollen content in the air of Lublin.
In Europe Ambrosia is included in invasive species. Its pollen contains very strong allergens that can be the cause of pollinosis at the turn of summer and autumn. The aim of the present study was to compare Ambrosia pollen concentrations in the air of Lublin and Lviv and to analyse the effect of weather conditions on Ambrosia pollen content in the air. The study was carried out in 2011 and 2012. In Lublin the volumetric method was applied using a Lanzoni VPPS 2000 trap, whereas in Lviv the gravimetric method was applied using a Durham trap. To make the results comparable, the data obtained by the gravimetric method were properly counted and expressed as the number of pollen grains per 1 m3 of air. This research shows that the Ambrosia pollen season started about a month earlier in Lviv and lasted longer than in Lublin. In Lviv ragweed pollen was recorded from the beginning of July, while in Lublin from the second week of August. The pollen season in both cities ended on different days of October. The seasonal peaks in both years and the annual pollen count in 2011 were much higher in Lublin than in Lviv. In both cities air temperature was the most important meteorological factor affecting pollen concentrations. During the pollen season in Lublin, the wind was predominantly from NE and E directions, whereas in Lviv from N and SE.
The paper refers to the estimation of Poaceae pollen seasons in Poland in selected areas. The aim of the study was to present the long-term variability of the start, end and duration of grass pollen seasons and the seasonal pollen index (SPI) in Poland against a background of the meteorological conditions over pollen seasons. The study was performed in eight Polish cities in 1992–2014 (the common seasons were 2003–2012). Pollen season start was relatively stable in the studied period, the seasons began about the 10th of May, a bit earlier in the south part of Poland. Pollen season ends were more changeable in comparison to the season start and fluctuated from the middle of July to the middle of September. SPI clearly depended on temperature and precipitation in April–August. Daily maximum pollen concentrations were achieved between the end of May and the first decade of July and no evident relationship between this day and weather conditions was found, apart from 2004.
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Birch pollen grains are one of the most important groups of atmospheric biological particles that induce allergic processes. The fluctuation pattern of birch pollen seasons in selected cities of Poland is presented. Measurements were performed by the volumetric method (Burkard and Lanzoni 2000 pollen samplers). The distributions of the data were not normal (Shapiro–Wilk test) and statistical error risk was estimated at a significance level of α = 0.05. Pollen season was defined as the period in which 95% of the annual total catch occurred. The linear trend for the selected features of the pollen season, skewness, kurtosis and coefficient of variation (V%) were also analyzed. During the 12–14 years of study, the beginnings of birch pollen seasons were observed 7–14 days earlier, the ends were noted 5–10 days earlier, and the days with maximum values occurred 7–14 days earlier compared to the long-term data. The left-skewed distribution of the pollen season starts in most sampling sites confirms the short-lasting occurrence of pollen in the air. The threat of birch pollen allergens was high during the pollen seasons. If vegetation is highly diverse, flowering and pollen release are extended in time, spread over different weeks and occur at different times of the day. Flowering time and pollen release are affected by insolation, convection currents, wind, and turbulence. Therefore, pollen seasons are characterized by great inter-annual variability.
The aim of the study was to determinate whether Artemisia campestris was present in the vicinity of 8 pollen monitoring stations in Poland by examining temporal variations in daily average airborne Artemisia pollen data recorded by Hirst type volumetric traps. Three day moving averages of airborne Artemisia pollen were examined by Spearman’s rank correlation test. Results show that Artemisia pollen seasons in Poland generally display similar unimodal patterns (correlation coefficients r > 0.900; P < 0.05). The only exception was the Artemisia pollen concentration noted in the outskirts of Poznań (Morasko), where the bimodal pattern was revealed. Correlations between Artemisia pollen data recorded at Poznań-Morasko and the other Polish sites were the lowest in the investigated dataset; this was particularly noticeable in the second part of pollen season (r ~0.730). We show that the typical bimodal pattern in Artemisia pollen seasons, which is characteristic of the presence of both A. vulgaris (first peak) and A. campestris (second peak), does not occur at the majority of sites in Poland and is restricted to the outskirts of Poznań. In fact, it was noted that the pollen monitoring site in Poznań-Centre, just 8 km from Morasko, only exhibited one peak (attributed to A. vulgaris). This shows that the influence of A. campestris on airborne pollen season curves is limited and can be largely disregarded. In addition, this study supports previous records showing that the spatial distribution of airborne Artemisia pollen within a city (urban-rural gradient) can vary markedly, depending on the species composition.
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