ISHS Acta Horticulturae 784: II Iberian Congress on Chestnut
ANEMOPHILOUS AND ENTOMOPHILOUS POLLEN FLOWS OF CASTANEA SATIVA IN THE NORTHEAST OF PORTUGAL |
| Authors: | B. Sabugosa-Madeira, H. Ribeiro, M. Cunha, I. Abreu |
| Keywords: | aerobiology, pollen monitoring, honeybees, chestnut tree, flowering |
| Abstract:
The impact of climatic changes can be evaluated by analysing the long-trends of plant phenological events. The airborne pollen sampling and the study of Apis mellifera L. (honeybee) collected pollen are two methodologies that can be used to survey the date of occurrence of the flowering phase. The aim of the present work was to compare the anemophilous and entomophilous pollen flows of Castanea sativa (chestnut tree) in two regions of the north-west of Portugal. The synchronism between the airborne samples and the honeybee samples was confirmed by the significant positive correlation between them. The inter-annual variations in the beginning and peak dates of pollen flows were very similar although an anticipation was observed in the honeybees. | |
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