tree pollen


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Related to tree pollen: pollen grain

tree pollen

Pollen released by coniferous trees (e.g., cedar), deciduous trees (e.g., birch), or fruit trees (e.g., olive). It is a major source of seasonal rhinitis and asthma.
See also: pollen
References in periodicals archive ?
Tree canopy cover near the prenatal address was associated with higher prevalence of allergic sensitization to tree pollen.
Although the amount of birch pollen is lower in the middle of the zone, and that of pine is increasing, birch is prevailing among tree pollen.
Recent studies suggest that when the number of Sporormiella spores in a sample of lake sediment is less than 2 percent of the number of grains of tree pollen, it's a sign that the surrounding area is home to few if any herbivores producing the large quantities of dung required for the fungi to thrive, says Jacquelyn Gill, a paleoecologist at Wisconsin-Madison who is also a coauthor of the new report.
These possible associations are suggested by a series of observational studies documenting the correlation of a spike in suicides during the spring months and the sudden release of tree pollens after the relatively pollen-free winter, said Dr.
Hay fever can be treated by avoiding plant and tree pollen as much as possible and using allergy medicine or receiving allergy shots.
This week, pollen and mold meters in Santa Barbara and Orange counties recorded very high tree pollen, but low molds left over from recent rain.
Samples 11 to 1 (100-170 cm) are dominated by spruce and fir (Abies is of low frequency) tree pollen (Picea and Abies) and non-tree pollen types (NAP).
If your hay fever becomes active around early spring then you are probably allergic to tree pollen.
The most abundant tree pollen is Quercus, which gradually increases from 2% to 13% (Fig.