Pollen concentrations in central italy (ascoli piceno and siena)

Abstract
Burkard volumetric samplers were used to carry out research on airborne pollen in the Ascoli Piceno and Siena atmosphere in the period April-September 1981. Total production in the period in question was quantitatively similar, with a prevalence of non-arboreal pollen in both stations. The overall trend has shown a positive correlation between the two stations. Differences were recorded with regard to the period of pollination and the quantity of pollen produced by Quercus, Poaceae, Oleaceae, Castanea, Plantaginaceae and Compositae.