scholarly journals The influence of weather conditions on the course of pollen seasons of alder (Alnus spp.), hazel (Corylus spp.) and birch (Betula spp.) in Lublin (2001-2006)

2012 ◽  
Vol 61 (1) ◽  
pp. 53-57 ◽  
Author(s):  
Agnieszka Dąbrowska
Keyword(s):  
Pollen Season ◽  
Birch Pollen ◽  
Correlation Coefficients ◽  
Pollen Grains ◽  
Thermal Conditions ◽  
Weather Conditions ◽  
Air Humidity ◽  
Relative Air Humidity ◽  
Beginning Of Flowering ◽  
Pollen Seasons

The start and rate of florescence of <i>Alnus</i>, <i>Corylus</i> and <i>Betula</i> are dependent on meteorological conditions. In the present paper we have analysed the effect of mean, maximum and minimum temperature, relative air humidity and precipitation on the onset of the pollen season as well as on its length and annual count of pollen grains in alder, hazel and birch. The measurement of pollen fall was done by the gravimetric methods with the use of Durham sampler. Correlation coefficients were calculated between the determined characteristics of the pollen season and weather conditions. In the six-year research period 2001-2006 it was observed that low temperatures in January produced a delayed start of the pollen season in alder, hazel and birch. The beginning of flowering in these taxa was also influenced by thermal conditions prevailing directly before the season (ca. 10 days). The pollen season of the trees in question tended to be prolonged alongside with the increase in relative air humidity, but it was shortened due to higher temperatures. The volume of alder and hazel pollen release increased together with the rise in relative air humidity and precipitation. The annual counts of birch pollen increased along with rising temperature and decreasing relative air humidity and precipitation in the season.

scholarly journals An analysis of grass (Poaceae) pollen seasons in Lublin in 2001-2008

2012 ◽  
Vol 62 (2) ◽  
pp. 91-96 ◽  
Author(s):  
Agnieszka Dąbrowska
Keyword(s):  
Grass Pollen ◽  
Pollen Season ◽  
Gravimetric Method ◽  
Pollen Allergy ◽  
Pollen Grains ◽  
Maximum Temperature ◽  
Air Humidity ◽  
Maximum Wind ◽  
Relative Air Humidity ◽  
Pollen Seasons

Grass pollen allergens are a frequent cause of pollen allergy in Poland and other European countries. The research on aeroplankton conducted in Lublin since 2001 allows characterization of the course of grass pollen seasons and estimation of the effect of maximum and minimum temperatures, relative air humidity, precipitation and maximum wind velocity on the taxon's pollen concentration. The gravimetric method was used in the study. During the eight-year research period, the pollen season usually started in the first or second decade of May and, as a rule, it lasted till the end of August, and quite exceptionally, in 2002 and 2008 till mid-August. The mean length of the pollen season was 107 days. The highest grass pollen risk was observed in the 26<sup>th</sup> and 27<sup>th</sup> week. The highest annual counts reaching over 3600 pollen grains × cm<sup>-2</sup> were noted in 2008, while in the other study years they ranged from 741 to 1909. The date of the pollen season onset and its course were highly dependent on weather conditions, which was confirmed by the statistical analysis. The greatest significant influence on the pollen season was exerted by maximum temperature, relative air humidity and the maximum wind.

scholarly journals The threat of allergenic airborne trees pollen to pollinosis sufferers in a rural area (Western Pomerania, Poland)

2015 ◽  
Vol 68 (4) ◽  
pp. 325-331 ◽  
Author(s):  
Aleksandra Kruczek ◽  
Małgorzata Puc ◽  
Alina Stacewicz ◽  
Tomasz Wolski
Keyword(s):  
Pollen Season ◽  
Birch Pollen ◽  
Pollen Grains ◽  
Daily Maximum ◽  
Pollen Concentrations ◽  
Diurnal Distribution ◽  
Annual Total ◽  
Total Pollen ◽  
Pollen Seasons ◽  
The Village

The aim of the study was to investigate the concentration of <em>Alnus</em> L., <em>Corylus</em> L. and <em>Betula</em> L. pollen in the village of Gudowo (Western Pomerania, Poland) in the years 2012–2014 in order to estimate the threat of allergenic tree pollen in this rural region. Measurements were performed using the volumetric method (VPPS Lanzoni 2000 pollen sampler). The duration of the pollen season was determined by the 98% method, taking days on which, respectively, 1% and 99% of the annual total pollen grains appeared as the beginning and end of the season. Pollen grains from hazel occurred in the air as the first ones, before pollen grains from alder and birch. The earliest beginning of the hazel pollen season was recorded in 2012, whereas alder and birch pollen seasons started the earliest in 2014. Daily maximum pollen concentrations of the investigated taxa were recorded in 2014. Birch pollen allergens posed the largest threat to pollinosis sufferers. In the years 2012–2014, pollen concentrations equal or higher than threshold values, at which people with pollinosis show allergic symptoms, were recorded most frequently for birch, hazel, and alder (25, 19, and 14 days, respectively). The highest hourly alder pollen concentration was recorded at 16:00 and in the case of hazel at 15:00. The diurnal distribution of birch pollen concentrations does not show any distinct peaks.

scholarly journals The relationship between flowering phenology and pollen seasons of Alnus Miller

2012 ◽  
Vol 65 (2) ◽  
pp. 57-66 ◽  
Author(s):  
Agnieszka Dąbrowska ◽  
Bogusław Michał Kaszewski
Keyword(s):  
Wind Speed ◽  
Pollen Season ◽  
Meteorological Factors ◽  
Airborne Pollen ◽  
Gravimetric Method ◽  
Air Humidity ◽  
Inflorescence Development ◽  
Relative Air Humidity ◽  
Pollen Seasons ◽  
The Relationship

The dynamics of flowering and pollen release in anemophilous plants and the length of the particular phases depend largely on the geobotanical features of a region, its climate, meteorological factors, biological characteristics of vegetation, and abundance of pollen resources. The aim of the study was to determine the relationship between the flowering phases in eight <i>Alnus</i> taxa and the dynamics of occurrence and abundance of airborne pollen grains as well as the meteorological factors (maximum and minimum temperature, relative air humidity, maximum wind speed, and precipitation). The flowering phenophases and pollen seasons were studied in 2008–2011. Phenological observations of flowering were conducted in the Maria Curie-Skłodowska University Botanical Garden in Lublin and they involved the following taxa: <i>Alnus crispa</i> var. <i>mollis</i>, <i>A. glutinosa</i>, <i>A. incana</i>, <i>A. incana</i> ‘Aurea’, <i>A. incana</i> ‘Pendula’, <i>A. maximowiczii</i>, <i>A. rubra</i> and <i>A. subcordata</i>. Spearman’s r correlation coefficients were calculated in order to determine the relationship between the dynamics of inflorescence development and meteorological conditions. Aerobiological monitoring using the gravimetric method was employed in the determination of <i>Alnus</i> pollen content in the air. The annual phenological cycles in 2008-2011 varied distinctly in terms of the time of onset of successive flowering phases in the <i>Alnus</i> taxa studied, which depended largely on the taxonomic rank and meteorological factors. The following flowering sequence was revealed in the 2008-2011 growing seasons: <i>A. subcordata</i> (December or January), <i>A. incana</i> ‘Pendula’, <i>A. incana</i>, <i>A. maximowiczii</i>, <i>A. rubra</i>, <i>A. glutinosa</i>, <i>A. incana</i> ‘Aurea’ (February or March), and <i>A. crispa</i> var. <i>mollis</i> (April). The study demonstrated that the pollen of the taxa persisted in the air, on average, from mid-December to early May. The mean length of the flowering period, which coincided with various phases of the pollen season, was 17 days. The <i>Alnus</i> pollen season in 2008 started at the end of January and lasted until mid-March. In 2009, 2010, and 2011, the beginning of the pollen season was recorded in the first week of March and the end in the first week of April. The maximum concentration of airborne <i>Alnus</i> pollen was found at the full bloom stage of mainly <i>A. glutinosa</i> and <i>A. rubra</i>. Inflorescence development was most closely related to temperature and relative air humidity; there was a weaker relationship with wind speed and precipitation.

scholarly journals The course of birch pollen seasons in Sosnowiec (Southern Poland) in 1997–2020 in relation to meteorological conditions

Aerobiologia ◽  
2021 ◽  
Author(s):  
Katarzyna Dąbrowska-Zapart ◽  
Tadeusz Niedźwiedź
Keyword(s):  
Wind Speed ◽  
Pollen Season ◽  
Birch Pollen ◽  
Pollen Grains ◽  
Meteorological Conditions ◽  
Maximum Temperature ◽  
Synoptic Situation ◽  
Pollen Concentrations ◽  
Pollen Seasons ◽  
The Impact

AbstractThe study's main objective was to specify the extent to which weather conditions were related to the course of birch pollen seasons in the years 1997–2020. The impact of atmospheric conditions on the daily concentrations of birch pollen grains, the Annual pollen integral (APIn), and the length of pollen seasons were studied. The dependency between each meteorological condition and various features of the birch pollen season was determined using Spearman’s rho correlation, the Kruskal–Wallis test, and cluster analysis with the k-means method. It has been shown that the duration of sunshine and average air temperature occurring within 14 days preceding the season has the most significant influence on the beginning of a birch pollen season. The value of daily birch pollen concentrations in Sosnowiec showed a statistically significant positive correlation with the duration of sunlight and the average and maximum wind speed. The daily concentration also depended on the synoptic situation: the mass airflow direction, the type of air mass inflow, and the type of weather front. The near-ground temperature influenced the APIn of birch pollen grains during the period of 14 days before the beginning of the season and the meteorological conditions occurring in the summer of the preceding year such as the maximum temperature, duration of sunlight, the maximum and average wind speed, and the relative air humidity. It was concluded that the length of birch pollen seasons decreased year by year.

scholarly journals Pollen seasons of selected tree and shrub taxa in Kraków and its neighbourhood

2012 ◽  
Vol 60 (2) ◽  
pp. 71-77 ◽  
Author(s):  
Dorota Myszkowska ◽  
Bartosz Jenner ◽  
Katarzyna Cywa ◽  
Monika Kuropatwa ◽  
Danuta Stępalska ◽  
...  
Keyword(s):  
Pollen Season ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Volumetric Method ◽  
Pollen Concentrations ◽  
Pollen Seasons ◽  
Start Dates

The aim of the study was to compare the dynamics of pollen seasons of selected tree and shrub taxa among measurement sites in Kraków and its neighbourhood. The study was performed in Kraków and Piotrkowice Małe in 2002, as well as in Kraków and Giebułtów in 2006. During the study the volumetric method was applied and pollen grains were counted along four horizontal lines. The lowest percentage of <i>Corylus</i> pollen and the highest percentage of <i>Betula</i> pollen were found in the analysed sites. The differences among start dates in various measurement sites in a given year were inconsiderable. Statistically signifi cant differences of SPI values for the majority of taxa were found between measurement sites and between seasons for Kraków. The pollen season dynamics showed one (<i>Betula</i>, <i>Pinaceae</i>) or more maximum values (<i>Corylus</i>, <i>Populus</i>, <i>Fraxinus</i>, <i>Salix</i>). The occurrence of many peaks could be explained by the appearance of several species within one genus in the studied area or by various weather conditions. In 2002 maximum pollen concentrations were recorded earlier than in 2006. The differences in these dates could be explained better by cumulative temperature >5℃ than >0℃.

scholarly journals The influence of meteorological factors on the hazel (Corylus L.) pollen concentration in Sosnowiec in the years 1997-2007

2012 ◽  
Vol 61 (2) ◽  
pp. 49-56 ◽  
Author(s):  
Katarzyna Dąbrowska-Zapart
Keyword(s):  
Relative Humidity ◽  
Pollen Season ◽  
Meteorological Factors ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Zero Temperature ◽  
Spore Trap ◽  
Average Maximum ◽  
Pollen Seasons ◽  
Daily Concentration

An analysis of hazel pollen seasons in Sosnowiec was presented on the basis of data from the years 1997-2007. The research was conducted by means of the volumetric method using a Burkard-type spore trap. The duration of pollen seasons was determined by means of the 98% method. The research demonstrated statistically significant correlations between the average, maximum and minimum temperature, relative humidity as well as the number of days with sub-zero temperature and the beginning of the hazel pollen season. It was demonstrated that the duration of the pollen season depended on air relative humidity, insolation and precipitation during the season and the annual sum depended on the weather conditions of the year preceding pollen production and also the weather conditions two years earlier. Significant correlations were also found between weather conditions and the daily concentration of pollen grains. The daily concentration decreased when relative humidity was high and increased with high insolation and air temperature.

scholarly journals Variations in birch (Betula spp.) pollen seasons in Lublin and correlations with meteorological factors in the period 2001-2010. A preliminary study

2012 ◽  
Vol 64 (2) ◽  
pp. 39-50 ◽  
Author(s):  
Krystyna Piotrowska ◽  
Bogusław M. Kaszewski
Keyword(s):  
Pollen Season ◽  
Meteorological Factors ◽  
Meteorological Data ◽  
Birch Pollen ◽  
Pollen Grains ◽  
Significant Negative Correlation ◽  
City Centre ◽  
Seasonal Temperature ◽  
Pollen Monitoring ◽  
Pollen Seasons

In Poland birch belongs to the most important taxa producing allergenic pollen, therefore information on the start dates, duration and severity of the pollen season is very important for allergists and their patients as well as for climatologists. Birch pollen monitoring was conducted in Lublin using the volumetric method during the period 2001-2010. A Lanzoni VPPS 2000 trap was placed at a height of 18 m in the city centre. The pollen season was determined using three methods: 98%, 95%, and 90%. The present study also investigated correlations between the birch pollen season parameters and meteorological factors. A comparison of the above-mentioned methods shows that, in the conditions prevailing in Lublin, the most appropriate method to determine the birch pollen season is the 98% method, since in the case of the two other methods too large quantities of pollen grains are eliminated. Based on a comparative analysis of the meteorological data from the study period and the long-term averages, it can be concluded that in the recent years a clear increase in air temperature has been recorded in Lublin. The study found a statistically significant negative correlation of seasonal pollen concentration with rainfall and air humidity. When the pre-peak and post-peak periods were separated, these correlations were larger and related to different meteorological factors. The start of the pollen season was negatively correlated with temperature in February and March. The season duration depended on temperature (a positive correlation). The date of the seasonal maximum was positively correlated with seasonal temperature and negatively with temperature in April.

scholarly journals The impact of weather conditions on hazel pollen concentration in Sosnowiec (Poland) in 1997–2019

Aerobiologia ◽  
2020 ◽  
Vol 36 (4) ◽  
pp. 697-713
Author(s):  
Katarzyna Dąbrowska-Zapart ◽  
Tadeusz Niedźwiedź
Keyword(s):  
Snow Cover ◽  
Pollen Season ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Pollen Concentration ◽  
Cover Depth ◽  
Sunshine Hours ◽  
Pollen Seasons ◽  
The Impact ◽  
Snow Cover Depth

AbstractThe goal of this study was to compare hazel pollen seasons in Sosnowiec in 1997–2019 and to analyse the impact of weather conditions on these seasons. The measurements were conducted using a volumetric method with a Burkard spore trap. The duration of pollen seasons was determined using the 98% method. SPI (Seasonal Pollen Index) was calculated as the sum of daily pollen concentrations in a given season. The measurements showed that high temperatures in January and February had an impact on the beginning of the hazel pollen season. They revealed that there are positive correlations with temperatures and sunshine hours long before the season, i.e. 210–180 days before. The daily hazel pollen concentration in Sosnowiec showed a positive and statistically significant correlation with air temperature, sunshine hours, and average and maximum wind speed. Negative correlation was demonstrated for snow cover depth and relative humidity of the air. Daily concentration levels depend also on the type of weather front as well as direction of air mass flow and its type. Variance analysis showed that the highest concentrations of hazel pollen grains were recorded when warm air moves from the south and south–western direction, whereas the lowest ones were noted for air moving from the east, south–east, north and north–east directions. Atmospheric precipitation, snow cover depth, and average, maximum, minimum and near-the-ground temperatures in the season also had an impact on the SPI of hazel pollen grains. High positive correlation coefficients were also observed in the case of thermal conditions, sunshine hours, relative humidity and precipitation from July to September in the year preceding a given pollen season. The duration of the hazel pollen season depends on precipitation, snow cover depth and temperature during a given season.

scholarly journals Fluctuation of birch (Betula L.) pollen seasons in Poland

2015 ◽  
Vol 68 (4) ◽  
pp. 303-313 ◽  
Author(s):  
Małgorzata Puc ◽  
Tomasz Wolski ◽  
Irene Câmara Camacho ◽  
Dorota Myszkowska ◽  
Idalia Kasprzyk ◽  
...  
Keyword(s):  
Pollen Season ◽  
Linear Trend ◽  
Birch Pollen ◽  
Statistical Error ◽  
Pollen Grains ◽  
Skewed Distribution ◽  
Significance Level ◽  
Fluctuation Pattern ◽  
Pollen Seasons ◽  
Pollen Release

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 <em>α</em> = 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 (<em>V</em>%) 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.

scholarly journals Flowering phenology and pollen seasons of Corylus spp. in Lublin (Poland), 2008-2011

2012 ◽  
Vol 65 (3) ◽  
pp. 13-24
Author(s):  
Agnieszka Dąbrowska
Keyword(s):  
Pollen Season ◽  
Flowering Phenology ◽  
Botanical Garden ◽  
Maximum Temperature ◽  
Air Humidity ◽  
Full Bloom ◽  
Relative Air Humidity ◽  
Pollen Seasons ◽  
The Individual ◽  
Meteorological Elements

In the years 2008-2011, phenological observations of flowering of male inflorescences were carried out in seven taxa from the genus <em>Corylus</em>: <em>C</em><em>. americana</em>, <em>C</em><em>. avellana</em>, <em>C</em><em>. avellana</em> &lsquo;Contorta&rsquo;, <em>C. avellana </em>&lsquo;Pendula&rsquo;, <em>C. </em>× <em>colurnoide</em><em>s</em>, <em>C</em><em>. cornuta</em>, <em>C. maxima</em>, grown in the Maria Curie-Skłodowska University Botanical Garden in Lublin. Simultaneously, the hazel pollen seasons in the atmosphere of Lublin were analysed using a Durham sampler. The aim of the work was to assess the flowering in seven <em>Corylu</em><em>s </em>taxa in relation to selected meteorological elements and to describe the pollen seasons in the years 2008-2011.<br /> During the study years, the annual phenological cycles in the studied <em>Corylus </em>taxa differed markedly in terms of timing of the onset of the successive flowering phases. During the four years of observations, the earliest beginning of hazel flowering was found at the end of January, whereas the latest – at the end of March. The earliest full bloom took place in the first decade of February, and the latest – in the first decade of April. The end of flowering was reported in February or in the first or second decade of April. Each year, <em>C. avellana </em>was the first to produce flowers and it was subsequently followed by <em>C. americana</em>, <em>C. </em>× <em>colurnoides</em>, <em>C. maxima</em>, <em>C. avellana </em>&lsquo;Pendula&rsquo;, <em>C. avellana</em> &lsquo;Contorta&rsquo;, and <em>C. cornuta</em>. The pollen seasons in the study period began at the end of January, in the second decade of February, or in the first decade of March. The end of the pollen seasons most frequently took place in the first or second decade of April. The length of the pollen seasons ranged from 38 to 49 days, while the length of the flowering periods in the individual taxa was 22 days on average. During the four study years, the onset of flowering in <em>C. avellana </em>and the beginning of the pollen season coincided on the same day, whereas the onset of flowering in the other taxa was usually reported after the beginning of the pollen seasons. The flowering period of <em>C</em>. <em>avellana </em>&lsquo;Contorta&rsquo; and <em>C. cornuta </em>lasted from 5 to 16 days after the pollen season. The development of inflorescences was most closely related to maximum temperature and relative air humidity.

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