Atmospheric birch (<i>Betula</i>) pollen in Europe: Trends and fluctuations in annual quantities and the starting dates of the seasons

Spieksma, F. Th. M.; Emberlin, Jean; Hjelmroos, Mervi; Jäger, Siegfried; Leuschner, Ruth M.

doi:10.1080/00173139509429033

Cited by 164 publications

(116 citation statements)

References 17 publications

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“…The 98% criterion (Gala´n et al, 1995) yielded the longest Poaceae season in all cities and years, while the criteria proposed by Mullenders et al (1972) and by Spieksma et al (1995) yielded the shortest season ( Figure 2b). Major differences (over 100 days) were observed between pollenseason durations as determined by the various Table 1.…”

Section: Resultsmentioning

confidence: 96%

“…Depending on the criterion used, a second, completely separate pollen season may be identified in the autumn in Cordoba (Figure 3). Similarly, application of the most restrictive criteria, such as those of Lejoly-Gabriel and Leuschner (1983) or Spieksma et al (1995), yielded two distinct pollen seasons in Ourense (Figure 4). …”

Section: Resultsmentioning

confidence: 99%

“…Mullenders et al (1972) Define the main period as beginning on the day when 5 dayÕs concentration reaches at least 1% of the joint total during three consecutive days and ends when the concentration is less than 0.9% during more than 10 days. Spieksma et al (1995) Use the same criterion as that of Mullenders et al (1972) but suggest that the 1% of the annual total should be defined as the mean annual total for the years considered. Ja¨ger et al (1996) Pollen season starts the first day that has a daily count higher than 1% of the annual pollen, presupposing that no more than six subsequent days follow with a zero count.…”

Section: Resultsmentioning

confidence: 99%

“…Meteorological data are usually supplied by local weather stations to enable calculation of thermic phenological indexes; accurate determination of the start of the Gala´n et al (1995) and Lejoly-Gabriel and Leuschner (1983) in 2002 and according to the criteria of Gala´n et al (1995) and Spieksma et al (1995) Feher and Ja`rai-Komlo´di (1997) and Lejoly-Gabriel and Leuschner (1983) in 2002 and according to the criteria of Feher and Ja`rai-Komlo´di (1997) and Spieksma et al (1995Spieksma et al ( ) in 2003 pollen season according to local flowering is therefore essential. This is particularly true for pollen types whose morphology permits airborne transport from earlier flowering areas, thus prompting a lack of synchronization between onset of flowering and pollen-season start-date.…”

Section: Discussionmentioning

confidence: 99%

“…Several authors have defined the period in terms of the time elapsing between 2 days on which specific values or conditions are registered (Mullenders et al, 1972;Lejoly-Gabriel and Leuschner, 1983;Spieksma et al, 1995;Ja¨ger et al, 1996;Feher and Ja`raiKomlo´di, 1997).…”

Section: Introductionmentioning

confidence: 99%

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May the definition of pollen season influence aerobiological results?

et al. 2006

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This paper reviews the terms and major criteria used to define and limit the pollen season. Pollen data from Cordoba (Spain), Ourense (Spain) and Bologna (Italy) were used to ascertain the extent to which aerobiological results and pollen curves are modified by the criteria selected. Results were analysed using SpearmanÕs correlation test. Phenological observations were also used to determine synchronization between pollen curves and plant phenology. The criteria for limiting the shortest and longest pollen season periods, as well as the earliest and latest start and end dates, varied according to the city and the taxon under study; in many cases, results for a given taxon also depended on the year. The smallest differences were obtained for Platanus and the greatest for Poaceae.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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May the definition of pollen season influence aerobiological results?

et al. 2006

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Impacts of oak pollen on allergic asthma in the United States and potential influence of future climate change

Anenberg

Weinberger

Roman³

et al. 2017

GeoHealth

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Future climate change is expected to lengthen and intensify pollen seasons in the U.S., potentially increasing incidence of allergic asthma. We developed a proof‐of‐concept approach for estimating asthma emergency department (ED) visits in the U.S. associated with present‐day and climate‐induced changes in oak pollen. We estimated oak pollen season length for moderate (Representative Concentration Pathway (RCP) 4.5) and severe climate change scenarios (RCP8.5) through 2090 using five climate models and published relationships between temperature, precipitation, and oak pollen season length. We calculated asthma ED visit counts associated with 1994–2010 average oak pollen concentrations and simulated future oak pollen season length changes using the Environmental Benefits Mapping and Analysis Program, driven by epidemiologically derived concentration‐response relationships. Oak pollen was associated with 21,200 (95% confidence interval, 10,000–35,200) asthma ED visits in the Northeast, Southeast, and Midwest U.S. in 2010, with damages valued at $10.4 million. Nearly 70% of these occurred among children age <18 years. Severe climate change could increase oak pollen season length and associated asthma ED visits by 5% and 10% on average in 2050 and 2090, with a marginal net present value through 2090 of $10.4 million (additional to the baseline value of $346.2 million). Moderate versus severe climate change could avoid >50% of the additional oak pollen‐related asthma ED visits in 2090. Despite several key uncertainties and limitations, these results suggest that aeroallergens pose a substantial U.S. public health burden, that climate change could increase U.S. allergic disease incidence, and that mitigating climate change may have benefits from avoided pollen‐related health impacts.

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Shifts in pollen release envelope differ between genera with non‐uniform climate change

Panchen

Johnston

2018

American J of Botany

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Our findings suggest that taxa differ in the reproductive consequences of environmental change. Differing shifts in phenology among species may be related to different rates of change in climatic variables in different months of the year. While our study only considers two genera, the results underscore the importance of understanding non-uniform intra-annual variation in climate when studying the ecological implications of climate change.

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Atmospheric birch (Betula) pollen in Europe: Trends and fluctuations in annual quantities and the starting dates of the seasons

Cited by 164 publications

References 17 publications

May the definition of pollen season influence aerobiological results?

May the definition of pollen season influence aerobiological results?

Impacts of oak pollen on allergic asthma in the United States and potential influence of future climate change

Shifts in pollen release envelope differ between genera with non‐uniform climate change

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