Study of the pollen emissions of Urticaceae, Plantaginaceae and Poaceae at five sites in western Spain |
| |
Authors: | Francisco José González Minero Isabel Iglesias Victoria Jato Maria Jesús Aira Pilar Candau Julia Morales Carmen Tomas |
| |
Institution: | (1) Departamento de Biología Vegetal y Ecologia, Universidad de Sevilla, Apdo. Correos 874, E-41012 Sevilla, Spain;(2) Facultad de Ciencias, Campus As Lagoas, University de Vigo, 32004 Orense, Spain;(3) Departamento de Biología Vegetal y Ecología, Facultad de Farmacia, Campus Sur., 17056 Santiago de Compostela, Spain |
| |
Abstract: | A comparative study is presented of the pollen emissions of Urticaceae, Plantaginaceae and Poaceae, collected during 1995
with Hirst samplers (Burkard or Lanzoni) at five sites in western Spain: two Mediterranean sites located in the south (Huelva
and Seville) and three Atlantic sites in the north (Orense, Vigo and Santiago). The annual pollen of Poaceae and Plantaginaceae
collected in the Atlantic cities was found to be twice that in the Mediterranean sites, and the total amount of Urticaceae
was higher at sites with an urban environment and subject to sea influence (Vigo, Huelva and Seville). At all the sites, the
start of the main pollination periods (MPP) took place in the following order: Urticaceae, Plantaginaceae and Poaceae. It
was also observed that the MPP of these three pollen types began earlier in Huelva and Seville, where the mean temperatures
necessary for the beginning of pollen emissions are recorded very early. Regarding the variation in pollen concentrations
throughout the year, Urticaceae presented peaks of maximum concentration in March (Huelva, Seville, Vigo and Orense) and June
(Santiago); Plantaginaceae in March (south) and June (north); and Poaceae in May (south) and June–July (north). At northern
sites, pollen emissions of Urticaceae and Plantaginaceae continued throughout the summer, while in the south they decreased
considerably from May onwards. From the allergenic point of view, the indices of reactivity described for Urticaceae and Poaceae
were exceeded more often at northern sites, in particular at Vigo. The meteorological conditions associated with periods of
highest pollen emission of these three herbaceous types are a rise in mean temperature, light or absent rainfall, and abundant
sunshine. The statistical correlations between pollen emissions and meteorological factors were not well-defined, either for
the stations or for all the taxa, although they were clearer for the Atlantic cities and for Urticaceae. |
| |
Keywords: | Allergenic pollen Plantaginaceae Poaceae Pollen emission Urticaceae |
本文献已被 SpringerLink 等数据库收录! |
|