Correlation between aerobiological and phytogeographical investigations in the Florence area |
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Authors: | Romano Zerboni Mariangela Manfredi Paolo Campi Pier Virgilio Arrigoni |
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Institution: | (1) Allergologia ed Immunologia-U.O. Multizonale Nuovo Ospedale San Giovanni di Dio-Firenze, Firenze, Italy;(2) Laboratorio di Fitogeografia-Dipartimento di Biologia vegetale Università di Firenze, Firenze, Italy |
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Abstract: | Summary The aim of our research work was to evaluate the results from our pollen count (p.c.) carried out at the Allergological Centre
of Nuovo Osp. San Giovanni di Dio in Florence, in the light of orogeographical, phytogeographical and meteorological data.
The highest p.c. was yielded by Graminaceae which appear in small quantities early in the year but increase considereably
starting from April. Oleaceae too showed high pollen concentration but over a shorter lenght of time. The p.c. for Compositae
and Urticaceae was lower. It should be noted that Cupressaceae yielded constantly high p.c. in February–March. Investigations
on the allergenic flora of the surroundings were carried out concentrically in order to find out the closest and the farthest
sources of pollen production. The species investigated come under 7 types of vegetation: xerophilous woods, mesophilous woods,
conifers woods, parks and gardens, rural areas, meadows, border areas-weeds. A phytosociological study of the types of vegetation
has made it possible to evaluate the single species quantitatively. The different sources of pollen production can be spotted
by mapping these types of vegetation. The seasonal characterization of pollen production is better defined by means of periodical
phenological checking of the existing allergenic flora along carefully planned routes through the areas next to the sampling
station.
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Keywords: | Phenology Phytogeography Pollens |
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