Comparative Analysis of some Vernal Pollen Concentrations in Timisoara (Romania), Szeged (Hungary), Novi Sad (Serbia) and Ljubljana (Slovenia)
Abstracthe aim of the study was to compare the airborne concentrations of pollen produced by vernal flowering trees taxa (Alnus, Betula, Carpinus, Corylus, Fraxinus, Platanus, Populus, Quercus, Taxaceae/Cupressaceae) in the cities of Timisoara (Romania), Szeged (Hungary), Novi Sad (Serbia) and Ljubljana (Slovenia) during the years 20062008. Annual variations in the concentration of pollen in the atmosphere were analysed by the volumetric method. In these cities, the period with the greatest diversity of pollen types is spring. These trees are found in mixed forests and are used in urban landscaping and home gardens. Inter-annual differences can be seen in the seasonal behaviour of the pollen in Novi Sad, 2008 being the year in which the highest levels of airborne pollen were reached. During the 3-year period, pollen of the representatives of the family Betulaceae accounted for a significant proportion of total pollen, predominated by Betula pollen and a considerably lower proportion of Alnus, Carpinus and Corylus airpollen. Taxaceae/Cupressaceae pollen appears in the atmospheric pollen spectra of all localities in high concentrations. These pollen grains are the main source of allergens in springtime. Results of the study reveal important differences between the cities.
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