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Study area (left) and climate diagram of Istanbul (right). The striped areas in the climate diagram denote humid conditions, and the dotted areas show when the conditions are arid (constructed according to Walter & Lieth, 1960)
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Information on the allergenic pollen season provides insight on the state of the environment of a region and facilitates allergy symptom management. We present a retrospective analysis of the duration and severity of the allergenic pollen season and the role of meteorological factors in Istanbul, Turkey. Aerobiological sampling from January 2013 to...
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Pollen concentration in the atmosphere is strongly affected by changes in meteorological factors, as well as urban and suburban vegetation in the study area. The identification of atmospheric pollen sources and estimates on their concentrations are critical for the quality of life for individuals affected by pollen allergy. In this study, we evalua...
Citations
... This is expected to have follow-up consequences on plant communities, with predicted changes in the overall Köppen-Geiger classifications for Norway (Beck et al., 2018). However, we found only minor predictive capacity of precipitation on daily pollen concentrations, although this could be due to precipitation being mostly important during the developmental process of the reproductive phenology (Majeed et al., 2018;Oduber et al., 2019;Zemmer et al., 2022), rather than the pollen dispersion process. The predicted future decrease in summer precipitation is likely to hinder the developmental progress (Ivits et al., 2014(Ivits et al., , 2013, leading to reduced pollen production for some species. ...
... Although not many studies have Significance: P < 0.001 -' *** ', P < 0.01 -' ** ', P < 0.05 -' * ', P > 0.05 -' ns '. C.A. Frisk et al. investigated the role of atmospheric pressure on pollen seasonality, a few studies correspond with the small effects observed in our study (Ojrzyńska et al., 2020;Stennett and Beggs, 2004;Zemmer et al., 2022). As atmospheric circulation attempts to correct differentials between high and low pressure areas, wind is created as an effect via movement of air masses. ...
Climate change is and will continue to alter plant responses to their environment. This is especially prominent concerning the adaptive tracking in reproductive phenology. For wind pollinated plants, this will substantially influence their pollen seasonality, yet there are gaps in knowledge about how environmental variation influences pollen seasonality. To investigate this, we monitored daily atmospheric pollen concentrations of seven pollen types from ecologically, economically and allergenically important plants (alder, hazel, willow, birch, pine, grass and mugwort) in twelve Norwegian locations spanning the entire country for up to 28 years. Six daily meteorological variables (maximum temperature, precipitation, wind speed, relative humidity, solar radiation and atmospheric pressure) was obtained from the MET Nordic dataset with full data cover. The pollen seasonality was then modelled using four spatial, three temporal and the six meteorological variables in a generalized linear model approach with a negative binomial distribution to investigate how each variable group thematically and individually contribute to variation in pollen seasonality. We found that the full models explained the most variation, ranging from R2 = 20.3 % to 59.5 %. The models were also highly accurate, being able to predict 54.5 % to 99.1 % of daily pollen concentrations to within 20.1 pollen grains/m3. Overall, the temporal variables were able to explain more variation than spatial and meteorological variables for most pollen types. Month, altitude and maximum temperature were the most important single variables for each category. The importance of each variable could be traced back to their individual effects of reproductive phenology, plant metabolism, species distributions and pollen release processes. We further emphasise the importance of source maps and atmospheric regional transport models in further model improvements. By understanding the relevance of environmental variation to pollen seasonality we can make better predictions regarding the consequences of climate change on plant populations.
... Las familias de plantas anemófilas (i.e. Betulaceaea, Poacaeae, Cupressaceae, Pinaceae, Urticaceaea, Chenopodiaceae) cuentan con un reconocido potencial alergénico (Aloisi et al 2019;Žiarovská et al 2019, Zemmer et al. 2022, Lei et al. 2023. ...
La aerobiología es una rama muy importante de la biología que estudia las partículas de origen biológico que se encuentran en el aire, por lo cual tiene una variedad de aplicaciones en investigaciones de distinta naturaleza. En la presente investigación, el objetivo fue caracterizar y asociar la fluctuación de la abundancia y diversidad de polen anemófilo con factores meteorológicos y la contaminación atmosférica, durante la época húmeda en la ciudad de Sucre. El monitoreo del polen en el aire, se llevó a cabo con un captador volumétrico Burkard y el conteo se realizó mediante el protocolo de Hirst. Nuestros resultados nos indican que los factores meteorológicos tienen influencia sobre la abundancia de los granos de polen que se encuentran en el aire, al igual que el factor contaminante PM10. En cuanto a los tipos polínicos, se registraron e identificaron 24 familias de plantas, se observó que existe una variación en la abundancia de polen en el aire, donde encontramos que diferentes familias de plantas tenían altos picos de liberación de polen en las fechas de muestreo, sugiriendo que las fechas de muestreo pueden considerarse como el periodo de floración y época de polinización de los taxones. Además, que 11 familias de plantas del polen encontrado se considera con polinización anemófila (i.e. viento), 10 familias son considerados de polinización por agentes polinizadores (i.e. insectos, roedores, aves) y 4 familias de polinización mixta.
... Further, we found that relative humidity decreased Pinaceae and Urticaceae pollen concentrations, as seen before rainfall, but increased Oleaceae. This effect was also previously observed in some herbaceous taxa, such us Urticaceae and Amaranthaceae (23). ...
Aerobiological studies constitute a relevant tool to predict the most influential
parameters over the pollen seasons with significant clinical relevance in the
allergic populations. The aim of this study was to describe the aerobiological
behaviour of the most relevant allergenic sources in the semi-arid area of
southeast of Spain (Almería) and to investigate the correlation with
meteorological factors and clinical symptoms of allergic patients. Daily pollen
count and meteorological parameters of Almería, Spain, were compiled for
ten years. The clinical symptoms of 248 allergic patients were also recorded.
Descriptive statistics and correlations between variables were assessed.
Multivariate analyses were performed to predict the influence of
meteorological factors on pollen concentration and the risk of suffer
respiratory symptoms. Eight pollen families were identified as the most
relevant allergenic sources. Temperature correlated with main pollen season
evolution of all taxa whereas rainfall and relative humidity only correlated in
Oleaceae, Pinaceae, Amaranthaceae, Asteraceae and Urticaceae. Rainfall and
relative humidity were the most influential predictors of pollen concentration,
except in Amaranthaceaea and Poaceae families, while temperature only
influenced on Cupressaceae and Urticaceae pollen concentrations. A
significant positive influence was observed between maximum temperature
and rainfall with the appearance of allergic symptoms in patients sensitized to
grasses, Parietaria sp. and Olea sp. This study, highlight the main
aerobiological features in the region and establish a suitable tool for clinical
follow-up and management of allergic patients. Further studies are needed
to establish an accurate measurement aimed to control and prevent pollinosis
in sensitized patients.
... The time of plant flowering as well as the amount of produced pollen and its dispersal in the air depend, e.g., on weather conditions, with winter and early spring temperature and precipitation rates as important determinants of the presence of airborne plant pollen [22,23]. Hazel and alder pollen grains are recorded already at the turn of winter and spring, with birch and poplar pollen noted in spring, i.e. in a period with changeable weather conditions. ...
Introduction and objective:
Hazel, alder, birch, and poplar pollen allergens are a common cause of pollen allergies. In a temperate climate, wind-pollinated plants are characterized by a seasonal pollen release cycle associated with the seasons of the year and weather conditions. Therefore, the aim of the present study was to assess the course of pollen seasons of some allergenic plants and to determine the effect of meteorological factors on the content of pollen grains in the bioaerosol in 2021 in Kielce, Poland.
Material and methods:
In relation to selected meteorological parameters, the length of the total and main pollen season, the sum of daily pollen grain concentrations in the season, the peak pollen concentration, and the number of days with values exceeding the species-specific threshold concentrations, were determined.
Results:
Hazel and alder pollen were the first to appear in the air of Kielce. The longest pollen season was observed for birch, while hazel was characterized by the shortest season. The alder pollen release was intense, with the highest maximum concentration of pollen grains. The study revealed a significant influence of the maximum air temperature on the dynamics of hazel, alder and poplar pollen release. Birch pollen release was significantly correlated with the average air humidity. The concentration of alder and birch pollen grains also depended on rainfall intensity. The wind force had a significant impact on the pollen season of plants.
Conclusions:
There were various relationships between the meteorological factors and the content of pollen grains in the air. The wind speed and temperature had the greatest impact on plant pollen release, with birch and alder being particularly sensitive to weather conditions.
There has been an insurgence of allergic respiratory diseases such as asthma and rhinitis in industrialized countries in the last few decades as a result of the interaction between air pollutants and pollen, which has become a global and dramatic health problem. Air pollutants such as nitrogen dioxide, sulfur dioxide, ozone, and carbon dioxide affect the physical, chemical and biological properties of pollen such as the pollen content, production, and allergenicity, exacerbating symptoms in vulnerable subjects. When investigating these interactions and their effects, the environmental impact of climate change, weather variables and urbanization should be taken into account as well as the pollen species, type of pollutant, conditions of exposure, and individual susceptibility. Up to 25% of asthma adult cases are work-related, because several categories of workers in different sectors are exposed to aeroallergens and outdoor air pollutants. Thus, in this study, we evaluated the significant impacts of occupational allergies on worker’s health and quality of life. In summary, to assess the effect of interactions between air pollutants and pollen on public and occupational health, all the factors that play a role in this context will be investigated, including environmental factors, individual susceptibility in relation to pollen species, type of pollutants, and conditions of exposure.
