Análisis aerobiológico del polen de algunos taxa entomófilos en la ciudad de Salamanca

Abstract

The concentration of airborne Ailanthus Desf., Robinia L. and Tilia L. pollen in Salamanca and the correlations with some meteorological parameters have been examined from 1999 to 2004 using a Hirst spore trap. The pollen shedding course of these genera took place from mid May to early June. The highest values appeared in the year 2000 for Ailanthus Desf. and Tilia L., and in the year 2001 for Robinia L. The cumulative counts varied over the years, with a mean value of 271 pollen grains, a highest total of 433 in 2000 and a lowest total of 76 in 2004. These yearly variations on these data could be related to the influence of meteorological factors, phenology and local conditions. Daily pollen concentrations presented slightly positive correlation with temperature, especially in the case of Tilia L., and negative with relative humidity using Spearman�s correlation coefficients.