Airborne Pollen Concentrations in Leiden, The Netherlands, 1977–1981

A study of Gramineae and Urticaceae pollen in the Derby area

“…10 and 11 also show the occurrence of high daily maximum counts for Urticaceae in August and counts up to 149 grains in September. The course of the Urticaceae season in Derby follows a similar pattern to Urtica levels in Leiden the Netherlands (Spieksma, 1986). The diurnal rhythm of Urticaceae in June (Fig.…”

Ragweed and mugwort pollen in Szczecin, Poland

“…The allergens of Artemisia pollen are responsible for the majority of pollinosis symptoms observed in late summer (Katial et al, 1997). According to Wallenstein and Kersten (1985) and Spieksma (1986), 3-10% of all pollinosis sufferers are allergic to the Artemisia antigens, with the majority also allergic to the pollen of ragweed, grass and the allergens of apple and celery (Grote et al, 1998;Hirschwehr et al, 1998). The threat related to the allergens of Ambrosia and Artemisia pollen is enhanced by the fact that the pollen of these taxa (as well as the pollen of other herbs) just above the ground level can be found concentrated at altitudes a few fold higher than 15-25 m (Alcazar and Comtois, 1999;Spieksma et al, 2000).…”

Airborne Pollen of Kuwait City, Kuwait, 1975–1987

“…Anderson (1980) and Spieksma (1983Spieksma ( , 1986 reported that a pollen calendar could reveal the relative abundance of certain pollen types over a given period and thus overcome the expected strong annual variation in number and time of appearance. Thus, the pollen calendar for Kuwait based on 12 years of observations is presented in Fig.…”