Common Hazel as an important pollen allergen - phenophase onsets connected with pollen season within the period 1991-2010
Abstract
Periodicity in the life of plants and animals is considered to be an indirect indicator for the periodicity in the climate. This is because plants and animals continuously respond to changing climatic influences.
At CHMI phenological network (wild plants) is observed 45 species including one of the most important pollen allergen Common Hazel. We have evaluated phenological phases connected with pollen season (beginning of flowering and end of flowering) within the period 1991-2010 including statistical and meteorological characteristics.
Temporal variability was executed in Excel, spatial variability in GIS (Clidata - GIS application, ArcView 3.2). Maps were created from average value, temporal variability was evaluated in altitudinal zones ({ 200 m, 201-400 m, 401-600 m, 601-800 m, } 801 m a.s.l.).
We have also calculated pentad temperature to phenophase onset (day of phenophase onset was not counted). Further climatological characteristics between allergology important phenophases were analysed (sum of air temperatures (DD), duration of sunshine (hours) and number of days with precipitation total } 1 mm.
Phenotermopluviograms show detailed analysis of air temperature and precipitation total at stations in Lednice (165 m a.s.l.) and Přibyslav (533 m a.s.l.) in period of flowering.