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Aerobiologia

, Volume 20, Issue 1, pp 53–61 | Cite as

Aerobiology of Urticaceae pollen in Trieste (NE Italy)

  • Loredana Rizzi Longo
  • Marialuisa Pizzulin Sauli
  • Paola Ganis
Article

Abstract

The aerobiological behaviour of Urticaceae in Trieste and the correlations with the meteorological parameters were examined. Airborne pollen was collected from 1990 to 1999 using a Hirst type spore trap (Burkard) and the data interpretation was performed according to the standard method adopted by the Italian Aeroallergen Network. The main pollen season of Urticaceae in Trieste goes from mid-April to mid-September. The highest values occur in May and June. Although different seasonal patterns are found every year, the main peak occurs on average at the beginning of May, followed by other decreasing peaks until September. Thecumulative counts vary greatly over the years, with a mean value of 18.315 p/m3. The maximum annual total pollen grains was registered in 1996 and the minimum in 1991. Spearman's correlation was used to establish the relationship between the daily pollen counts and the daily meteorological data both considering their original quantitative values and transformed values according to their day by day changes. Daily pollen concentrations present usually positive correlation with temperature, negative with rainfall and wind speed and no correlation with humidity. Better results were obtained with transformed values.

aerobiology airborne pollen correlation with meteorological parameters main pollen season Trieste Urticaceae 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Loredana Rizzi Longo
    • 1
  • Marialuisa Pizzulin Sauli
    • 1
  • Paola Ganis
    • 1
  1. 1.Department of BiologyUniversity of TriesteTriesteItaly

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