, Volume 17, Issue 4, pp 336–344 | Cite as

Male phenology of three species of Cupressus: correlation with airborne pollen

  • Pablo J. HidalgoEmail author
  • Carmen Galán
  • Eugenio Domínguez
Original Article


A 3-year male phenological field study was performed on the represented species of the genus Cupressus in the city of Cordoba (Spain): Cupressus arizonica, C. macrocarpa and C. sempervirens. A new and complete description of the phenological stages of the male flower of Cupressus was obtained. Five phenological phases were described using internal and external bud/flower traits. In general, different pollination periods were recorded for the 3 years. C. arizonica flowered from 20 to 23 days before the others. C. macrocarpa and C. sempervirens flowered almost simultaneously, although the former appeared to flower slightly earlier. The total number of trees per square kilometre was estimated taking into account the total number of trees of each species in the city and surrounding area (5 km radius from the city centre). Data corresponding to total pollen production per tree were taken from a previous study in which the partial contribution of each species to atmospheric pollen was estimated. Considering all these parameters, a theoretical airborne pollen model was proposed. A correlation coefficient (R 2) of 0.46 was obtained when comparing this model with the average airborne pollen concentrations for the last 18 years. According to the proposed model, C. macrocarpa trees accounted for 78% of total airborne pollen, while C. sempervirens and C. arizonica accounted for only 18% and 4%, respectively. The final objective of this study was to provide additional biological information on these species responsible for winter pollinosis in the Mediterranean area. Forecasting pollen emission and dispersion has an important application in public health warnings.


Male phenology Cupressus Airborne pollen Microsporogenesis 



The authors are grateful to the European Community for financial support granted through Project ENV4-CT98-0755 and to the ZAMBON Group for financial support of the ASTHMA project.


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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Pablo J. Hidalgo
    • 1
    Email author
  • Carmen Galán
    • 2
  • Eugenio Domínguez
    • 2
  1. 1.Departamento de Biología Ambiental y Salud PúblicaUniversidad de HuelvaHuelvaSpain
  2. 2.Departmento de Biología VegetalUniversidad de CórdobaCórdobaSpain

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