The transported and deposited pollen curves of 12 tree taxa in the outskirts of Trieste are reported. Meteorological data, the frequency of the taxa in the survey area, and phenologic observations on the anthesic periods have been used for the interpretation of the pollen curves.
There is a generally good correspondence between pollination and deposition peaks, and the anthesic periods. The pollination curves allow to distinguish the contributions of sources at different distances from the trap. There are some correlations between meteorological factors and quantitative variation of airborne pollen.
