scholarly journals Evaluation of the effect of weather on concentrations of airborne Artemisia pollen using circular statistic

2014 ◽  
Vol 67 (1) ◽  
pp. 3-14 ◽  
Author(s):  
Katarzyna Borycka ◽  
Idalia Kasprzyk
Keyword(s):  
Meteorological Parameters ◽  
Airborne Pollen ◽  
Sunshine Duration ◽  
Circular Statistics ◽  
Pollen Concentration ◽  
Long Distance ◽  
Circular Statistic ◽  
Early Afternoon ◽  
Pollen Concentrations ◽  
Nonparametric Correlation

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.

scholarly journals The Relationship between Metrological Parameters and Total Airborne Pollen Concentration in Atmosphere of Khartoum City During 2018

2021 ◽  
pp. 93-109
Author(s):  
Ejlal Sanad Mohammed Motwaly ◽  
A.G. Elfadil ◽  
Ahmed Mudawi Musa
Keyword(s):  
Relative Humidity ◽  
Meteorological Parameters ◽  
Airborne Pollen ◽  
Maximum Temperature ◽  
Pollen Concentration ◽  
Spore Trap ◽  
Pollen Concentrations ◽  
The Relationship ◽  
Metrological Parameters ◽  
Airborne Pollen Concentration

This study is aimed to find out the effect and relationship between metrological parameters and total airborne pollen concentration in atmosphere in Khartoum city (Sudan). For that purpose, one-year data during 2018 of Total Airborne Pollen Concentration (TAPC) and meteorological parameters is utilized. Pollen concentration in the atmosphere was measured using Non-volumetric air sampler (Vertical cylinder spore trap). The descriptive statistic of TAPC and metrological parameters were presented. The result showed TAPC in 2018 reached to their maximum in August (37.5/m³), and the minimum in June (14/ m³). Analysis of the relationship between TAPC and meteorological parameters showed that variations in the pollen concentrations were mainly affected by maximum temperature. In addition, there were substantial differences in these relationships in different seasons. In Autumn, they were affected by the rain falls, maximum temperature and relative humidity; in summer, they were affected by maximum temperature; and in winter, they were affected by maximum temperature and relative humidity. Temperature, rain falls and relative humidity promote plant growth and blooming. As well as the results show wind direction was significant on seasonally TAPC especially in Autumn. The results found significant effects between the meteorological on TAPC, were it is showed 72 % are affecting on TAPC refer to meteorological parameters and 28 % refer to another factors.

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 Integrating Phenological, Aerobiological and Weather Data to Study the Local and Regional Flowering Dynamics of Four Grapevine Cultivars

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 185
Author(s):  
María Fernández-González ◽  
Helena Ribeiro ◽  
Alba Piña-Rey ◽  
Ilda Abreu ◽  
F. Javier Rodríguez-Rajo
Keyword(s):  
Airborne Pollen ◽  
Weather Data ◽  
Vitis Vinifera L ◽  
Pollen Concentration ◽  
Peak Period ◽  
Hirst Sampler ◽  
Main Pollen Season ◽  
Pollen Concentrations ◽  
Integral Spin ◽  
Bioclimatic Conditions

Phenological, aerobiological, and weather data are useful tools to study local and regional flowering dynamics in crops with economic importance. The present study focuses on four autochthonous grapevine cultivars, namely, ‘Treixadura’, ‘Godello’, ‘Loureira’, and ‘Albariño’ (Vitis vinifera L.), which belong to the Designation of Origin Ribeiro area (located in northwestern Spain) from 2015–2019. The aims of the work were to (1) compare the airborne pollen concentration in the vineyard collected by two different traps, (2) analyze the influence of the main meteorological variables on cultivar phenology and pollen concentration, and (3) test the contribution of the air masses on pollen concentrations in the vineyard. Phenological development has been assessed twice weekly, according to the Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie (BBCH) scale. Airborne pollen concentrations were monitored by using two traps during stage 6 (flowering), namely, a Hirst volumetric sampler and a Cour passive trap. The bioclimatic conditions affected the duration of flowering, ranging from 11 and 24 days. The highest seasonal pollen integral (SPIn) was registered in 2016 for the Hirst sampler, with 302 pollen, and in 2019 for the Cour trap, with 1,797,765 pollen/m2/day. The main variables affecting pollen concentrations were average temperature during the main pollen season, as well as, temperatures and dew points during the pre-peak period. The relationship between pollen data registered by both traps and the obtained harvest indicate that the Hirst trap may be more suitable for predicting a local production and that the Cour sampler is more appropriate for forecasting regional productions.

Thirty-Year Survey on Airborne Pollen Concentrations in Genoa, Italy: Relationship with Sensitizations, Meteorological Data, and Air Pollution

2011 ◽  
Vol 25 (6) ◽  
pp. e232-e241 ◽  
Author(s):  
Arsenio Corrado Negrini ◽  
Simone Negrini ◽  
Vania Giunta ◽  
Silvana Quaglini ◽  
Giorgio Ciprandi
Keyword(s):  
Air Pollution ◽  
Pollen Season ◽  
Meteorological Parameters ◽  
Airborne Pollen ◽  
Meteorological Data ◽  
Pollen Allergy ◽  
Pollen Species ◽  
Pollen Concentrations ◽  
Large Populations ◽  
Pollen Release

Background Pollen allergy represents a relevant health issue. Betulaceae sensitization significantly increased in Genoa, Italy, in the last decades. This study investigated possible relationships among pollen count, meteorological changes, air pollution, and sensitizations in this city during a 30-year period. Methods Betulaceae, Urticaceae, Gramineae, and Oleaceae pollen counts were measured from 1981 to 2010 in Genoa. Sensitization to these pollens was also considered in large populations of allergic patients. Meteorological parameters and pollutants were also measured in the same area. Results Betulaceae sensitization increased over time. All pollen species significantly increased over this time. Pollen season advanced for Betulaceae and Urticaceae. Only Urticaceae season significantly increased. Temperature increased while rainfall decreased over the time. Pollutants significantly decreased. There were some relationships between pollen changes and climatic and air pollution parameters. Conclusion This 30-year study conducted in an urbanized area provided evidence that Betulaceae sensitization significantly increased, pollen load significantly augmented, and climate and air pollution changed with a possible influence on pollen release.

scholarly journals EVALUATION OF METEOROLOGICAL PARAMETERS INFLUENCE UPON POLLEN SPREAD IN THE ATMOSPHERE / METEOROLOGINIŲ PARAMETRŲ ĮTAKOS ŽIEDADULKIŲ SKLAIDAI ATMOSFEROJE ĮVERTINIMAS / ОЦЕНКА ВЛИЯНИЯ МЕТЕОРОЛОГИЧЕСКИХ ПАРАМЕТРО ВН АДИСПЕРСИЮ ПЫЛЬЦЫВ АТМОСФЕРЕ

2011 ◽  
Vol 19 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Laura Veriankaitė ◽  
Ingrida Šaulienė ◽  
Arūnas Bukantis
Keyword(s):  
Air Temperature ◽  
Meteorological Parameters ◽  
Airborne Pollen ◽  
Rank Correlation ◽  
Correlation Method ◽  
Pollen Concentration ◽  
Spearman’S Rank Correlation ◽  
Rank Correlation Method ◽  
Pollen Types ◽  
Complex Influence

The elements determining the meteorological conditions are the main parameters in processes of airborne pollen modeling. In modern research the influence of different meteorological element or their complex is analyzed basing upon the statistic methods or using dispersion models in which the possible influence of meteorological parameters upon airborne pollen is described in equations. The correlation of meteorological indicators and pollen concentration in the atmosphere fixed in Klaipėda Aerobiological Station is analyzed in this article. The coefficients of correlation of meteorological parameters and pollen concentration are calculated basing upon the Spearman's rank correlation method. The analysis of various factors was used for determining the complex influence of meteorological parameters upon the pollen concentration in the air. After evaluation of influence of meteorological parameters as separate factors one has determined that more than a half of analyzed pollen types showed statistically reliable (p &lt; 0.05) correlation of pollen amount in the air and relative air humidity (89%), air temperature (74%) and amount of precipitation (52%). The investigation results showed that 37% of pollen amount of indicated plants genera and families in the atmosphere was determined by wind velocity. After evaluation of complex influence of meteorological factors on the concentration of pollen spread in the air one has determined that relative humidity and/or air temperature are one of the most significant environmental factors determining the amount of pollen in the atmosphere during the vegetation. Their influence was determined for all the three cases under study. Santrauka Meteorologines sąlygas nusakantys elementai yra pagrindiniai parametrai modeliuojant žiedadulkių sklaidą. Nūdienos moksliniuose tyrimuose tam tikro meteorologinio elemento ar jų komplekso poveikis analizuojamas statistiniais metodaisarba taikant sklaidos modelius, kuriuose pagrindinėmis lygtimis aprašoma galima meteorologinių parametrų įtaka žiedadulkių sklaidai. Straipsnyje analizuojama meteorologinių rodiklių sąsajos su Klaipėdos aerobiologinėje stotyje fiksuota žiedadulkių koncentracija ore. Meteorologinių parametrų ir žiedadulkių koncentracijų koreliacijos koeficientai apskaičiuoti Spearman ranginės koreliacijos metodu. Tiriant kompleksinę meteorologinių parametrų įtaką žiedadulkių koncentracijai ore, išanalizuota įvairūs veiksniai. Atskirai įvertinus įvairių meteorologinių parametrų įtaką, nustatyta statistiškai patikima (p &lt; 0,05) daugiau nei pusės analizuotų žiedadulkių tipų žiedadulkių kiekio ore ir santykinės oro drėgmės (89 %), oro temperatūros (74 %) ir kritulių kiekio (52 %) sąsaja. Tyrimo rezultatai rodė, kad vėjo greitis turi įtakos 37 % identifikuotų augalų genčių ir šeimų žiedadulkių kiekiui ore. Įvertinus kompleksinę meteorologinių veiksnių įtaką oru sklindančių žiedadulkių koncentracijai, nustatyta, kad santykinis drvgnumas ir/arba oro temperatūra yra vieni reikšmingiausių aplinkos veiksnių, lemiančių žiedadulkių kiekį atmosferoje vegetacijos metu. Резюме Элементы, описывающие метеорологические условия, являются основными параметрами в процессах моделирования дисперсии пыльцы. В современных исследованиях воздействие каждого метеорологического элемента илиих комплекса анализируется с помощью статистических методов и моделей распространения, в которых фундаментальными уравнениями описываются возможные эффекты воздействия метеорологических параметровна распространение пыльцы. Статья посвящена анализу соотношения метеорологических величин с концентрацией пыльцы, зафиксированной на аэробиологической станции Клайпеды. Коэффициенты корреляции междуметеорологическими параметрами и концентрацией пыльцы вычислены на основе метода ранговой корреляцииСпирмена. Анализ различных факторов был использован для определения комплексного влияния метеорологических параметров на концентрации пыльцы в воздухе. Оценка метеорологических параметров как отдельныхфакторов показала, что более половины анализируемых типов пыльцы свидетельствует о статистически значимой(р &lt; 0,05) связи между пыльцой в воздухе и относительной влажностью (89%), температурой воздуха (74%) иосадками (52%). Результаты исследования показали, что скорость ветра оказывает влияние на количество ватмосфере 37% определенных семейств и родов пыльцы. Оценка комплексного влияния метеорологическихфакторов на концентрацию пыльцы в воздухе показала, что относительная влажность воздуха и(или) температуравоздуха являются одними из наиболее важных экологических факторов, определяющих количество пыльцы ватмосфере в течение вегетационного периода. Их влияние выявлено вo всех изученных случаях.

scholarly journals Spatial differentiation of airborne arboreal pollen in Lublin (Poland)

2015 ◽  
Vol 68 (4) ◽  
pp. 333-341
Author(s):  
Krystyna Piotrowska-Weryszko ◽  
Elżbieta Weryszko-Chmielewska
Keyword(s):  
Airborne Pollen ◽  
Spatial Differentiation ◽  
Sampling Device ◽  
Long Distance ◽  
Pollen Monitoring ◽  
Se Poland ◽  
Long Distance Transport ◽  
Arboreal Pollen ◽  
Pollen Concentrations ◽  
Positive Correlations

The study compared the occurrence of airborne pollen of 7 arboreal taxa (<em>Corylus</em>, <em>Alnus</em>, Cupressaceae/Taxaceae, <em>Populus</em>, <em>Fraxinus</em>, <em>Betula</em> and <em>Carpinus</em>) 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 <em>U</em>-test showed differences for Cupressaceae/Taxaceae, <em>Fraxinus</em>, <em>Populus</em> and <em>Corylus</em> between sites. The intradiurnal pattern of pollen concentration was characterized by high variation. Cupressaceae/Taxaceae and <em>Populus</em>, clearly differed in hourly pollen concentrations at both sites. Moreover, in the case of <em>Betula</em> and <em>Alnus</em> 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.

scholarly journals A Survey of Atmospheric Pollen and Spores in North-Western Nigeria

2018 ◽  
Vol 10 (2) ◽  
pp. 182-192
Author(s):  
Olugbenga Shadrak ALEBIOSU ◽  
Olusola H. ADEKANMBI
Keyword(s):  
Meteorological Parameters ◽  
Airborne Pollen ◽  
Health Concern ◽  
Pollen Types ◽  
Pollen Concentrations ◽  
Atmospheric Pollen ◽  
Local Plants ◽  
Study Sites ◽  
The Impact ◽  
North Western

The incidence of airborne pollen occurring as aeroallergens of varied levels at different periods of the year has generated some public health concern globally. The present study was conducted in order to examine the monthly depositional rate of airborne pollen and fern spores, as well as the impact of meteorological parameters and local plants on pollen distribution at two study sites in Kaduna and Sokoto States of North Western Nigeria. The study spanned a period of one year, during which a modified Tauber pollen sampler was employed in the collection of atmospheric pollen and fern spores; local plants were also enumerated. Residual solution was collected monthly, subjected to acetolysis and the treated residues were viewed for microscopic studies. The results reveal monthly distribution of airborne pollen and fern spore types at the study sites during the sampling period. Dominant pollen types in Kaduna State were those of Alchornea laxiflora, Pinus caribaea, Terminalia sp., Sapotaceae and Poaceae family. Pollen of Syzygium guineense, Alchornea sp., Sapotaceae and Poaceae dominated in Sokoto State. Spores of Pteris sp., Nephrolepis sp. and a trilete fern were also recovered at both locations. Some local plants in the immediate vegetation contributed to the aeroflora of these locations. No significant correlation was recorded between monthly total pollen concentrations and mean monthly meteorological parameters of the locations. It is imperative to investigate the allergenicity of these dominant pollen types, so as to aid pollen hypersensitive individuals in adopting appropriate prophylactic measures.

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