Betulaceae and Corylaceae in Trieste (NE-Italy):Aerobiological and clinical data

Abstract

Airborne pollen produced by Betulaceae and Corylaceaeis present in the Trieste area for a long period fromJanuary to June, but only in April it does representa considerable proportion (436 p/m3) of the totalpollen count (1193 p/m3). In the years considered (1995–1997), there was a gradual increase in thepollen count of Corylaceae and Betulaceae: frommaximum levels of 580 p/m3 in 1995 to 1218 p/m3 in 1997, and the taxon making the mostsignificant contribution to the pollen concentrationcurve was Ostrya carpinifolia.