Phenological surveys of allergenic species in the neighbourhood of Bologna (Italy) |
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| Authors: | Anna Letizia Zanotti Giovanna Puppi |
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| Institution: | (1) Dipartimento di Biologia Evoluzionistica Sperimentale –, Università di Bologna, Bologna, Italy (author for correspondence: e-mail:;(2) Dipartimento di Biologia Evoluzionistica Sperimentale –, Università di Bologna, Via Irnerio 42, I-40126 Bologna, Italy |
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| Abstract: | The results of phenological observations in ageomorphologically differentiated area are shown.Phenological surveys were conducted on flowering andpollen emission of some common and widely diffusedGraminaceae species, using a 7-step key. By means ofmultiple regression analysis altitude,latitude, slope and exposure were identified as significantenvironmental factors in giving rise to thepollination: in particular with respect to altitude thephenological pattern showed a negative gradient below100 m of altitude and a positive one above. |
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| Keywords: | allergenic species Graminaceae northern Italy phenology pollen emission |
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