Aerobiology of Artemisia airborne pollen in Murcia (SE Spain) and its relationship with weather variables: annual and intradiurnal variations for three different species. Wind vectors as a tool in determining pollen origin |
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Authors: | M Munuera Giner José S Carrión García Javier García Sellés |
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Institution: | (1) Departamento de Biología Vegetal (Botánica), Facultad de Biología, E-30100 Espinardo, Murcia, Spain e-mail: mmunuera@fcu.um.es Fax: +34 968 363 963, ES;(2) Sección de Alergia (R. General). H.U. ”Virgen de la Arrixaca”, El Palmar, Murcia, Spain, ES |
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Abstract: | Detailed results from a 2-year survey of airborne pollen concentrations of Artemisia in Murcia are presented. Three consecutive pollen seasons of Artemisia occurring each year, related to three different species (A.
campestris, A.
herba-alba and A.
barrelieri), were observed. A winter blooming of Artemisia could explain the incidence of subsequent pollinosis in the Murcia area. With regard to meteorological parameters, mathematical
analyses showed relationships between daily pollen concentrations of Artemisia in summer–autumn and precipitations that occurred 6–8 weeks before. The cumulative percentage of insolation from 1 March
seemed to be related to blooming onsets. Once pollination has begun, meteorological factors do not seem to influence pollen
concentrations significantly. Intradiurnal patterns of pollen concentrations were similar for late summer and winter species
(A. campestris and A.
barrelieri). During autumn blooming (A.
herba-alba), the intradiurnal pattern was particularly erratic. Theoretical values of wind run were obtained for each pollen season
by the graphical sum of hourly wind vectors. When theoretical wind run was mapped onto the vegetation pattern, supposed pollen
source locations were obtained for each hour. By comparing supposed hourly pollen origins with the intradiurnal patterns of
pollen concentrations, it can be seen that this simple model explains variations in mean pollen concentrations throughout
the day.
Received: 6 May 1998 / Revised: 24 February 1999 / Accepted: 12 March 1999 |
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Keywords: | Artemisia pollen Annual and intradiurnal variations Meteorological relationships Pollen origin Wind transport |
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