CENSUS OF AIRBORNE POLLEN GRAINS IN THE ATMOSPHERE OF ASCOLI PICENO (CENTRAL ITALY)

Abstract
Summary: Hirst's Volumetric Sampler was employed in the aerial survey of atmospheric pollen of Ascoli Piceno. Altogether 67 pollen types are recognized. The highest concentrations of airborne pollen occur in April, May, June, with pollen of Gramineae, Corylaceae, Fagaceae, Urticaceae and Oleaceae predominant.