scholarly journals Corylus and Alnus pollen concentration in air of Lviv (Western Ukraine)

2016 ◽  
Vol 69 (2) ◽  
Author(s):  
Nataliya Kalinovych ◽  
Kateryna Voloshchuk ◽  
Nataliya Vorobets
Keyword(s):  
Pollen Season ◽  
Gradual Increase ◽  
Airborne Pollen ◽  
Gravimetric Method ◽  
Weather Conditions ◽  
Pollen Concentration ◽  
Western Ukraine ◽  
Pollen Seasons ◽  
A Site ◽  
Start Dates

<em>Corylus</em> and <em>Alnus</em> trees are common throughout Western Ukraine. They are important producers of allergenic airborne pollen in the environment of Lviv city. The objective of this study was to examine the dynamics of the <em>Corylus</em> and <em>Alnus</em> air pollen concentration in Lviv with reference to changes in weather conditions. Pollen data (2011–2015) were obtained by the gravimetric method for a site located at the center of Lviv city. The total annual <em>Corylus</em> pollen sums varied from 281 to 724, while the <em>Alnus</em> sums were several times more abundant and varied from 656 to 2505. There were 43 days of difference in start dates of the <em>Corylus</em> pollen season. The start dates for the <em>Alnus</em> pollen season showed a 30-day difference over the 5 years. The season duration differed by 17 days for <em>Corylus</em> and 31 days for <em>Alnus</em>. There is some evidence of synchronous patterns for <em>Corylus</em> and <em>Alnus</em> pollen seasons in Lviv. A trend was observed towards earlier starts of seasons that corresponded to a gradual increase in the average February temperature over 2011–2015.

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 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 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 Xanthium strumarium L. pollen concentration in aeroplankton of Lublin in the years 2003-2005

2012 ◽  
Vol 59 (2) ◽  
pp. 131-141
Author(s):  
Elżbieta Weryszko-Chmielewska ◽  
W. Zwolan ◽  
T. Wolski ◽  
T. Baj
Keyword(s):  
Pollen Season ◽  
Gravimetric Method ◽  
Pollen Grains ◽  
Xanthium Strumarium ◽  
Pollen Concentration ◽  
Average Temperature ◽  
The Third ◽  
Pollen Concentrations ◽  
Pollen Seasons ◽  
One Year

<i>Xanthium strumarium</i> (common cocklebur) pollen grains are included in allergenic types. During a three-year study (2003-2005) conducted by using the gravimetric method at two trap sites in Lublin, daily concentrations, maximum concentrations and annual sums of pollen grains, as well as the length of pollen seasons of this species were compared. The pollen season of common cocklebur starts in the first or second decade of July and lasts until the third decade of September. The length of the pollen season is 70-80 days. The highest cocklebur pollen concentrations, amounting to 40-59 z·cm<sup>-2</sup>, occurred between 8 and 18 August. The maximum cocklebur pollen concentrations differed slightly in particular trap sites over the period of three years of study. A statistically significant correlation between the <i>Xanthium strumarium</i> pollen concentration and average temperature was demonstrated only in one year of study (2004).

scholarly journals The late flowering of invasive species contributes to the increase of Artemisia allergenic pollen in autumn: an analysis of 25 years of aerobiological data (1995–2019) in Trentino-Alto Adige (Northern Italy)

Aerobiologia ◽  
2020 ◽  
Vol 36 (4) ◽  
pp. 669-682 ◽  
Author(s):  
Antonella Cristofori ◽  
Edith Bucher ◽  
Michele Rossi ◽  
Fabiana Cristofolini ◽  
Veronika Kofler ◽  
...  
Keyword(s):  
Invasive Species ◽  
Pollen Season ◽  
Airborne Pollen ◽  
Pollen Grains ◽  
Late Summer ◽  
Natura 2000 ◽  
Allergenic Pollen ◽  
Pollen Concentration ◽  
Pollen Concentrations ◽  
Negative Impacts

AbstractArtemisia pollen is an important aeroallergen in late summer, especially in central and eastern Europe where distinct anemophilous Artemisia spp. produce high amounts of pollen grains. The study aims at: (i) analyzing the temporal pattern of and changes in the Artemisia spp. pollen season; (ii) identifying the Artemisia species responsible for the local airborne pollen load.Daily pollen concentration of Artemisia spp. was analyzed at two sites (BZ and SM) in Trentino-Alto Adige, North Italy, from 1995 to 2019.The analysis of airborne Artemisia pollen concentrations evidences the presence of a bimodal curve, with two peaks, in August and September, respectively. The magnitude of peak concentrations varies across the studied time span for both sites: the maximum concentration at the September peak increases significantly for both the BZ (p < 0.05) and SM (p < 0.001) site. The first peak in the pollen calendar is attributable to native Artemisia species, with A. vulgaris as the most abundant; the second peak is mostly represented by the invasive species A. annua and A. verlotiorum (in constant proportion along the years), which are causing a considerable increase in pollen concentration in the late pollen season in recent years.. The spread of these species can affect human health, increasing the length and severity of allergenic pollen exposure in autumn, as well as plant biodiversity in both natural and cultivated areas, with negative impacts on, e.g., Natura 2000 protected sites and crops.

scholarly journals 50 Years of Pollen Monitoring in Basel (Switzerland) Demonstrate the Influence of Climate Change on Airborne Pollen

2021 ◽  
Vol 2 ◽  
Author(s):  
Regula Gehrig ◽  
Bernard Clot
Keyword(s):  
Climate Change ◽  
Pollen Season ◽  
Airborne Pollen ◽  
Linear Trend ◽  
Linear Increase ◽  
Pollen Monitoring ◽  
Pollen Species ◽  
Poaceae Pollen ◽  
Almost All ◽  
Start Dates

Climate change and human impact on vegetation modify the timing and the intensity of the pollen season. The 50 years of pollen monitoring in Basel, Switzerland provide a unique opportunity to study long-term changes in pollen data. Since 1969, pollen monitoring has been carried out in Basel with a Hirst-type pollen trap. Pollen season parameters for start dates, end dates and duration were calculated with different pollen season definitions, which are commonly used in aerobiology. Intensity was analyzed by the annual pollen integral (APIn), peak value and the number of days above specific thresholds. Linear trends were calculated with the non-parametric Mann Kendall method with a Theil-Sen linear trend slope. During the last 50 years, linear increase of the monthly mean temperatures in Basel was 0.95–1.95°C in the 3 winter months, 2–3.7°C in spring months and 2.75–3.85°C in summer months. Due to this temperature increase, the start dates of the pollen season for most of the spring pollen species have advanced, from 7 days for Poaceae to 29 days for Taxus/Cupressaceae. End dates of the pollen season depend on the chosen pollen season definition. Negative trends predominate, i.e., the pollen season mostly ends earlier. Trends in the length of the pollen season depend even more on the season definitions and results are contradictory and often not significant. The intensity of the pollen season of almost all tree pollen taxa increased significantly, while the Poaceae pollen season did not change and the pollen season of herbs decreased, except for Urticaceae pollen. Climate change has a particular impact on the pollen season, but the definitions used for the pollen season parameters are crucial for the calculation of the trends. The most stable results were achieved with threshold definitions that indicate regular occurrence above certain concentrations. Percentage definitions are not recommended for trend studies when the annual pollen integral changed significantly.

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 Flowering and airborne pollen - a novel statistical approach

2012 ◽  
Vol 60 (2) ◽  
pp. 51-55 ◽  
Author(s):  
Idalia Kasprzyk ◽  
Adam Walanus
Keyword(s):  
Pollen Season ◽  
Statistical Approach ◽  
Airborne Pollen ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Time Pattern ◽  
Se Poland ◽  
Full Flowering ◽  
High Concentrations ◽  
Intensive Growth

The time pattern of flowering significantly affects the pollen season, its beginning, length and the concentration of pollen grains in air. The forecasting models used in aerobiological studies were chiefly based on the elements of weather conditions; however, recently the phenology of pollen shedding has been taken into consideration in these models more and more frequently. The aim of the presented investigations was to determine to what extent the flowering and the occurrence of allergenic pollen grains in air coincided in time. The investigation was carried out in Rzeszów (SE Poland) in the years 2003-2004. The flowering of 19 allergenic plant species was observed and seven phenophases were distinguished. Aerobiological monitoring was based on the volumetric method. In the case of most herbaceous plants, the flowering period overlapped the pollen season, high concentrations of pollen being recorded throughout several phenophases. In general, the pollen of trees occurred during very short periods, frequently during one phenophase, while the investigated phenomena were missing each other. The most intensive growth of inflorescences of alder, hazel and birch was observed at the beginning of full fl owering or towards the end of full flowering.

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 Analysis of changes in Betula pollen season start including the cycle of pollen concentration in atmospheric air

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256466
Author(s):  
Agnieszka Kubik-Komar ◽  
Krystyna Piotrowska-Weryszko ◽  
Izabela Kuna-Broniowska ◽  
Elżbieta Weryszko-Chmielewska ◽  
Bogusław Michał Kaszewski
Keyword(s):  
Pollen Season ◽  
Linear Trend ◽  
Birch Pollen ◽  
Volumetric Method ◽  
Pollen Concentration ◽  
Pollen Monitoring ◽  
Atmospheric Air ◽  
Low Concentrations ◽  
Start Dates ◽  
Linear Trends

Birch belongs to the most important allergenic taxa in Europe, therefore information on the start dates of the pollen season is very important for allergists and their patients as well as for climatologists. The study examined changes in the start of the birch pollen season as well as determined the trend of these changes. Pollen monitoring was performed in Lublin (eastern Poland) in the period 2001–2019 using the volumetric method. The Makra-test was used to detect periods with significantly higher or lower average of the onset than the average for the whole dataset. Two significant falls in the average of the pollen season start were found in 2007 and 2014. Besides, taking into account the 2-3-year rhythm of high and low concentrations of birch pollen in the atmospheric air, linear trends were fitted for the subsets of high and low abundance seasons. Significant changes in Betula pollen season start dates were only determined for the highly abundance seasons, while the results for seasons with a low concentration did not allow rejecting the hypothesis about the lack of a linear trend in the changes in the studied parameter. Moreover, a significant polynomial relationship was found between the beginning of a pollen season and the average values of monthly temperatures preceded a season. These analyses show that the start dates of the Betula pollen season are getting significantly earlier. The dynamics of changes differ between seasons with high and low concentrations of pollen.

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