Dispersal of allergenic pollen from Cryptomeria japonica and Chamaecyparis obtusa: characteristic annual fluctuation patterns caused by intermittent phase synchronisations

@article{Ishibashi2019DispersalOA,
  title={Dispersal of allergenic pollen from Cryptomeria japonica and Chamaecyparis obtusa: characteristic annual fluctuation patterns caused by intermittent phase synchronisations},
  author={Akira Ishibashi and Kenshi Sakai},
  journal={Scientific Reports},
  year={2019},
  volume={9}
}
Trees produce pollen during specific times of the year. Pollen can induce pollinosis, a type of allergic rhinitis, in humans. In Japan, allergenic pollen is mainly dispersed from February to May. Using data collected at 120 observation sites managed by the Japanese Ministry of the Environment, we studied the annual patterns of airborne allergenic pollen. The allergenic pollen showed an alternating ON–OFF cycle, but the length of the cycle differed among regions. We used an in-phase/out-of-phase… 
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References

SHOWING 1-10 OF 50 REFERENCES
Synchronized inter‐annual fluctuation of flowering intensity affects the exposure to allergenic tree pollen in North Europe
TLDR
The synchronisation of high and low pollen years in the genera Betula, Alnus, Corylus, Salix and Populus and the cumulative effects that an increasing number of taxa has on the number of days of exposure to different levels of allergenic pollen in North Europe are studied.
Forecasting models for sugi (Cryptomeria japonica D. Don) pollen count showing an alternate dispersal rhythm.
TLDR
An alternate pollen dispersal rhythm represented by a dummy variable in the multiple regression analysis plays a key role in improving forecasting models for the total annual sugi pollen count.
Allergenic pollen and pollen allergy in Europe
TLDR
Even though pollen production and dispersal from year to year depend on the patterns of preseason weather and on the conditions prevailing at the time of anthesis, it is usually possible to forecast the chances of encountering high atmospheric allergenic pollen concentrations in different areas.
2002 Survey of Airborne Pollen in Wakayama City with aReal-Time Pollen Counter (KH-3000)
We studied the usefulness of a real-time pollen counter (KH-3000, Yamato Manufacturing Co. Ltd.). Airborne pollen was measured with a Durham pollen counter and a KH-3000 from February 1, 2002 to…
Relationship between Pollen Diseases and Meteorological Factors in Japan
Pollen counts have been increasing and patients suffering from pollen allergy now exceed 14% of the population of Japan. The amount of pollen has a positive relationship with the air temperatures and…
Phenology and human health: allergic disorders
TLDR
A workshop to discuss the associations between weather, climate change, phenology, pollen trends and allergic disorders, and the possible need to adapt pollen forecasting to a changing climate recommended multidisciplinary collaboration.
Male flowering of birch: Spatial synchronization, year-to-year variation and relation of catkin numbers and airborne pollen counts
[A new prediction method for the total pollen counts of Cryptomeria japonica based on variation in annual summertime temperature].
TLDR
It is considered that the new method for predicting the total pollen counts of Cryptomeria japonica is useful enough for prediction, especially, the year of bumper crop of male flower.
[Comparison of predictive methods of Sugi (Cryptomeria) atmospheric pollen counts using mean temperature, solar radiation and male flowering index--an example of Toyama Prefecture].
TLDR
Following good harvest years of male flower, atmospheric pollen counts predicted by previous year's mean temperature of July and the total solar radiation ofJuly and August are higher than the actual atmospheric pollen count.
Evolutionary advantages of mast seeding in Fagus crenata
TLDR
Mast seeding in F. crenata appears to be determined by selective pressures from its seed predators, as key-factor analysis revealed that pre-dispersal seed predation had a larger effect on seed production per flower than did pollination efficiency.
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