scholarly journals Searching for a trace of Artemisia campestris pollen in the air

2015 ◽  
Vol 68 (4) ◽  
pp. 399-404 ◽  
Author(s):  
Łukasz Grewling ◽  
Idalia Kasprzyk ◽  
Katarzyna Borycka ◽  
Kazimiera Chłopek ◽  
Łukasz Kostecki ◽  
...  
Keyword(s):  
Pollen Season ◽  
Airborne Pollen ◽  
Rank Correlation ◽  
Temporal Variations ◽  
Monitoring Site ◽  
Pollen Data ◽  
Pollen Monitoring ◽  
Bimodal Pattern ◽  
Pollen Seasons ◽  
Artemisia Campestris

The aim of the study was to determinate whether <em>Artemisia campestris</em> was present in the vicinity of 8 pollen monitoring stations in Poland by examining temporal variations in daily average airborne <em>Artemisia</em> pollen data recorded by Hirst type volumetric traps. Three day moving averages of airborne <em>Artemisia</em> pollen were examined by Spearman’s rank correlation test. Results show that <em>Artemisia</em> pollen seasons in Poland generally display similar unimodal patterns (correlation coefficients <em>r</em> &gt; 0.900; <em>P</em> &lt; 0.05). The only exception was the <em>Artemisia</em> pollen concentration noted in the outskirts of Poznań (Morasko), where the bimodal pattern was revealed. Correlations between <em>Artemisia</em> 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 (<em>r</em> ~0.730). We show that the typical bimodal pattern in <em>Artemisia</em> pollen seasons, which is characteristic of the presence of both <em>A. vulgaris</em> (first peak) and <em>A. campestris</em> (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 <em>A. vulgaris</em>). This shows that the influence of <em>A. campestris</em> 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 <em>Artemisia</em> pollen within a city (urban-rural gradient) can vary markedly, depending on the species composition.

scholarly journals Earlier Flowering of Betula pendula Roth in Augsburg, Germany, Due to Higher Temperature, NO2 and Urbanity and Relationship with Betula spp. Pollen Season

2021 ◽  
Vol 18 (19) ◽  
pp. 10325
Author(s):  
Franziska Kolek ◽  
Maria Plaza ◽  
Vivien Leier-Wirtz ◽  
Arne Friedmann ◽  
Claudia Traidl-Hoffmann ◽  
...  
Keyword(s):  
Pollen Season ◽  
Betula Pendula ◽  
Airborne Pollen ◽  
Flowering Phenology ◽  
Random Trees ◽  
Long Distance ◽  
Pollen Monitoring ◽  
Betula Pendula Roth ◽  
Full Flowering ◽  
Pollen Seasons

Flowering and pollen seasons are sensitive to environmental variability and are considered climate change indicators. However, it has not been concluded to what extent flowering phenology is indeed reflected in airborne pollen season locally. The aim of this study was to investigate, for the commonly represented in temperate climates and with highly allergenic pollen Betula pendula Roth, the responsiveness of flowering to different environmental regimes and also to check for commensurate changes in the respective pollen seasons. The region of Augsburg, Bavaria, Germany, was initially screened for birch trees, which were geolocated at a radius of 25 km. Random trees across the city were then investigated during three full flowering years, 2015–2017. Flowering observations were made 3–7 times a week, from flower differentiation to flower desiccation, in a total of 43 plant individuals. Data were regressed against meteorological parameters and air pollutant levels in an attempt to identify the driving factors of flowering onset and offset. Flowering dates were compared with dates of the related airborne pollen seasons per taxon; airborne pollen monitoring took place daily using a Hirst-type volumetric sampler. The salient finding was that flowering occurred earlier during warmer years; it also started earlier at locations with higher urbanity, and peaked and ended earlier at sites with higher NO2 concentrations. Airborne pollen season of Betula spp. frequently did not coincide locally with the flowering period of Betula pendula: while flowering and pollen season were synchronized particularly in their onset, local flowering phenology alone could explain only 57.3% of the pollen season variability. This raises questions about the relationship between flowering times and airborne pollen seasons and on the rather underestimated role of the long-distance transport of pollen.

scholarly journals Long-Term Pollen Monitoring in the Benelux: Evaluation of Allergenic Pollen Levels and Temporal Variations of Pollen Seasons

2021 ◽  
Vol 2 ◽  
Author(s):  
Letty A. de Weger ◽  
Nicolas Bruffaerts ◽  
Mieke M. J. F. Koenders ◽  
Willem W. Verstraeten ◽  
Andy W. Delcloo ◽  
...  
Keyword(s):  
Airborne Pollen ◽  
Temporal Trends ◽  
Temporal Variations ◽  
Allergenic Pollen ◽  
Pollen Monitoring ◽  
Common Trend ◽  
Pollen Seasons ◽  
Pollen Release ◽  
Insight Into

Airborne pollen is a major cause of allergic rhinitis, affecting between 10 and 30% of the population in Belgium, the Netherlands, and Luxembourg (Benelux). Allergenic pollen is produced by wind pollinating plants and released in relatively low to massive amounts. Current climate changes, in combination with increasing urbanization, are likely to affect the presence of airborne allergenic pollen with respect to exposure intensity, timing as well as duration. Detailed analysis of long-term temporal trends at supranational scale may provide more comprehensive insight into these phenomena. To this end, the Spearman correlation was used to statistically compare the temporal trends in airborne pollen concentration monitored at the aerobiological stations which gathered the longest time-series (30–44 years) in the Benelux with a focus on the allergenic pollen taxa: Alnus, Corylus, Betula, Fraxinus, Quercus, Platanus, Poaceae, and Artemisia. Most arboreal species showed an overall trend toward an increase in the annual pollen integral and peak values and an overall trend toward an earlier start and end of the pollen season, which for Betula resulted in a significant decrease in season length. For the herbaceous species (Poaceae and Artemisia), the annual pollen integral and peak values showed a decreasing trend. The season timing of Poaceae showed a trend toward earlier starts and longer seasons in all locations. In all, these results show that temporal variations in pollen levels almost always follow a common trend in the Benelux, suggesting a similar force of climate change-driven factors, especially for Betula where a clear positive correlation was found between changes in temperature and pollen release over time. However, some trends were more local-specific indicating the influence of other environmental factors, e.g., the increasing urbanization in the surroundings of these monitoring locations. The dynamics in the observed trends can impact allergic patients by increasing the severity of symptoms, upsetting the habit of timing of the season, complicating diagnosis due to overlapping pollen seasons and the emergence of new symptoms due allergens that were weak at first.

scholarly journals Main features of Poaceae pollen season in Madeira region (Portugal)

2015 ◽  
Vol 68 (4) ◽  
pp. 367-372
Author(s):  
Irene Câmara Camacho ◽  
Rita Câmara ◽  
Roberto Camacho
Keyword(s):  
Pollen Season ◽  
Airborne Pollen ◽  
Growing Season ◽  
Onset Date ◽  
Critical Levels ◽  
Pollen Monitoring ◽  
Madeira Island ◽  
Poaceae Pollen ◽  
The Mean ◽  
Low Levels

<p>The pollinic spectrum of the Madeira region is dominated by grass pollen, which also represents an important aeroallergen in Europe. The present work aims to analyze the main features of the Poaceae pollen season in the Madeira region to determine the allergic risk. The study took place in Funchal city, the capital of Madeira Island, over a period of 10 years (2003–2012). The airborne pollen monitoring was carried out with a Hirst type volumetric trap, following well-established guidelines.</p><p>In the atmosphere of Funchal, the mean annual Poaceae pollen index was 229. The mean Poaceae pollen season lasts 275 days, with an onset date in January/March and an end date in November/December. Poaceae counts showed a seasonal variation with 2 distinct peaks: a higher peak between March and June, and the second one in autumn. The peak values occurred mainly between April and June, and the highest peak was 93 grains/m<sup>3</sup>, detected on the 27th May of 2010. The Poaceae pollen remaining at low levels during the whole growing season, presenting a nil to low allergenic risk during most of the study period. Higher critical levels of allergens have been revealed after 2006. In general, the pollen risk from Poaceae lasted only a few days per year, despite the very long pollen season and the abundance of grasses in the landscape of Madeira Island.</p>

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 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 Comparison of Artemisia L. pollen concentrations and risk of development of allergy symptoms in different regions of Poland in 2020

Alergoprofil ◽  
2020 ◽  
Vol 16 (4) ◽  
pp. 27-33
Author(s):  
Krystyna Piotrowska-Weryszko ◽  
Elżbieta Weryszko-Chmielewska ◽  
Aneta Sulborska ◽  
Agata Konarska ◽  
Agnieszka Lipiec ◽  
...  
Keyword(s):  
Pollen Season ◽  
Airborne Pollen ◽  
Pollen Allergy ◽  
Volumetric Method ◽  
The Other ◽  
Suburban Areas ◽  
Allergenic Potential ◽  
Pollen Concentrations ◽  
Pollen Seasons ◽  
Artemisia Pollen

In central Europe, mugwort pollen is a frequent cause of pollen allergy. Poland is one of the countries with the highest airborne concentrations of pollen of this taxon. Due to its high allergenic potential, Artemisia pollen may pose a significant threat to sensitive subjects during summer months. Plants from this genus often grow in urban and suburban areas.             The aim of the study was to compare mugwort pollen seasons and concentrations of airborne pollen of these plants in 12 cities located in different regions of Poland: Bialystok, Bydgoszcz, Cracow, Lublin, Olsztyn, Opole, Piotrkow Trybunalski, Sosnowiec, Szczecin, Warsaw, Wroclaw, and Zielona Gora. The investigations were carried out with the volumetric method using a Hirst-type pollen sampler (Lanzoni or Burkard) operating on a 24-hour basis. The duration of the pollen season was determined with the 98% method. The earliest onset of the mugwort pollen season was noted in Opole (12.07), and the latest beginning was recorded in Cracow and Sosnowiec (23.07). The maximum pollen concentrations were reported on August 7 and 8 in Lublin (177 P/m3) and Wroclaw (100 P/m3). In all the cities, peak days were recorded on the first ten days of August. The maximum pollen concentrations in the other cities were in the range of 18-89 P/m3. The highest annual pollen sum was recorded in Lublin (1423) and Wroclaw (1050). These values coincided with the highest pollen concentrations determined in these cities. The annual Artemisia pollen sums in 2020 did not have the highest values in comparison with other years in these cities. The average annual pollen sum in the five-year period of 2001-2005 was estimated at 2065 in Lublin and 1662 in Wrocław. Therefore, it can be concluded that the risk of mugwort pollen allergy in the pollen season 2020 was lower than in some previous years.

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 Analysis of allergenic pollen data, focusing on a pollen load threshold statement

Aerobiologia ◽  
2021 ◽  
Author(s):  
Laura Šukienė ◽  
Ingrida Šaulienė ◽  
Rūta Dubakienė ◽  
Odilija Rudzevičienė ◽  
Gintautas Daunys
Keyword(s):  
Pollen Season ◽  
Airborne Pollen ◽  
Epidemiological Studies ◽  
Allergenic Pollen ◽  
Pollen Load ◽  
Pollen Data ◽  
Main Pollen Season ◽  
Pollen Types ◽  
Pollen Concentrations ◽  
Morbidity Data

AbstractAirborne allergenic pollen affects a significant part of the population and the information on pollen load is a valuable tool for public health prevention. The messages should be provided in a form easily understandable for the population. The study provides new insight for the categorisation of pollen load by defining thresholds solely from aerobiological data. Using the long-term airborne pollen data of Corylus, Alnus, Betula, Poaceae, and Artemisia have been evaluated the regionality of pollen concentrations in Lithuania. SPIn and peak values of the main pollen season highlighted as regionality indicators. The largest differences between stations were found in the cases of Corylus and Artemisia.The principle enabling a group of pollen concentrations into levels has been analysed based on retrospective aerobiological data of five pollen types. Thresholds were determined by employing the lowest peak value of the pollen season and applying the 25% principle for selected pollen types. The results were verified by performing associations of defined thresholds with retrospective morbidity data of allergic rhinitis and allergic asthma in Lithuania. Determined pollen thresholds can be used in epidemiological studies requiring associations with pollen concentration. Thresholds could also complement air quality information by integrating pollen load data into public messages or contribute to the development of mHealth systems.

Climate Change and its impact on Poaceae and Fagaceae pollen season in Northern Sardinia, Italy

2020 ◽  
Author(s):  
Annalisa Canu ◽  
Arnoldo Vargiu ◽  
Grazia Pellizzaro
Keyword(s):  
Climate Change ◽  
Pollen Season ◽  
Airborne Pollen ◽  
Meteorological Data ◽  
Monitoring Network ◽  
Flowering Phenology ◽  
Data Series ◽  
Sampling Station ◽  
Pollen Data ◽  
Public Garden

&lt;p&gt;Airborne pollen data are an important source of information on flowering phenology, because they record the response of plants surrounding the sampling station, rather than the responses of individual plants, as with direct phenological observation. Plant phenology represents a good indicator of vegetation responses to long-term variation to temperatures. Furthermore, several studies have evidenced that aerobiological data series and pollen season are often strongly correlated to climate change.&lt;/p&gt;&lt;p&gt;This research aims to analyze airborne pollen data of Poaceae and Fagaceae measured from 1986 to 2008 in a urban area of northern Sardinia (Italy) and to investigate the trends in these data and their relationship with meteorological parameters using time series analysis. The aerobiological monitoring station was located in the center of the city very close to a public garden, and it is part of both the Italian and the European - A.I.A. Aeroallergen monitoring Network. Meteorological data were recorded during the same period by an automatic weather station.&lt;/p&gt;&lt;p&gt;The following parameters were calculated for each pollen: start, end and duration of pollen season, date of peak pollen concentration, number of days from the beginning of the season to the peak, annual pollen index (API), percentage distribution of API and maximum daily concentration.&lt;/p&gt;&lt;p&gt;The correlation between meteorological variables and the different characteristics of pollen seasons was analyzed using Spearman&amp;#8217;s correlation tests.&lt;/p&gt;&lt;p&gt;A linear regression model was used for the trend analysis of the API of airborne pollen spread of the two family from 1986 to 2008.&lt;/p&gt;

scholarly journals The importance of the stationary and individual pollen monitoring for the diagnostic of pollen allergy

2012 ◽  
Vol 59 (1) ◽  
pp. 373-383 ◽  
Author(s):  
Dorota Myszkowska ◽  
Barbara Bilo ◽  
Danuta Stępalska ◽  
Jerzy Wołek
Keyword(s):  
Rank Correlation ◽  
Pollen Allergy ◽  
Pollen Grains ◽  
State Committee ◽  
Pollen Monitoring ◽  
Low Concentrations ◽  
Pollen Concentrations ◽  
Burkard Trap ◽  
Pollen Seasons ◽  
Local Plants

The aim of the study was to evaluate pollen seasons of selected taxa with particular reference to allergic taxa such as birch (<i>Betula</i> sp.), grasses (Poaceae), mugwort (<i>Artemisia</i> sp.) in Cracow in 2003 and 2004 (project number 3 PO5D 034 24 funded by the State Committee for Scientific Research). Pollen concentrations obtained using the stationary Burkard trap and personal Partrap FA 52 were compared. The volumetric method was used in the study. Average daily concentrations (pollen grains × m<sup>-3</sup>) were obtained by counting pollen grains every hour along 4 longitudinal transects and applying an appropriate conversion factor. Duration of the pollen season was determined using the 95% method. Variations in annual totals of pollen grains (birch and mugwort), in start dates (especially for grasses) and in the season duration (birch and grasses) were found. The comparison of pollen concentrations obtained using the stationary and personal traps at the same place showed non statistically significant correlation for all the studied taxa and statistically significant correlations for birch, mugwort and grasses (Spearman rank correlation). However, the statistically significant differences between the concentrations obtained using Burkard and Partrap carried by patients (Wilcoxon's test) were noted. Very low concentrations of pollen grains measured indoor (work, flats) and the influence of the local plants growing in separate place (courtyard of the Allergology Department) on the pollen concentration were found.

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