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Variations in Quercus sp. Pollen Seasons (1996--2011) in Poznań, Poland, in Relation to Meteorological Parameters

Grewling, Ł. and Jackowiak, B. and Smith, Matt (2014) Variations in Quercus sp. Pollen Seasons (1996--2011) in Poznań, Poland, in Relation to Meteorological Parameters. Aerobiologia, 30 (2). pp. 149-159. ISSN 0393-5965 Online: 1573-3025

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Abstract

The aim of this study is to supply detailed information about oak (Quercus sp.) pollen seasons in Pozna\', Poland, based on a 16-year aerobiological data series (1996--2011). The pollen data were collected using a volumetric spore trap of the Hirst design located in Pozna\' city center. The limits of the pollen seasons were calculated using the 95 % method. The influence of meteorological parameters on temporal variations in airborne pollen was examined using correlation analysis. Start and end dates of oak pollen seasons in Pozna\' varied markedly from year-to-year (14 and 17 days, respectively). Most of the pollen grains (around 75 % of the seasonal pollen index) were recorded within the first 2 weeks of the pollen season. The tenfold variation was observed between the least and the most intensive pollen seasons. These fluctuations were significantly related to the variation in the sum of rain during the period second fortnight of March to first fortnight of April the year before pollination (r = 0.799; p < 0.001). During the analyzing period, a significant advance in oak pollen season start dates was observed (â��0.55 day/year; p = 0.021), which was linked with an increase in the mean temperature during the second half of March and first half of April (+0.2 °C; p = 0.014). Daily average oak pollen counts correlated positively with mean and maximum daily temperatures, and negatively with daily rainfall and daily mean relative humidity.

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Uncontrolled Keywords: trends, climate change, Poland, central Europe, pollen season, meterological parameters,
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Academic Departments > Institute of Science and the Environment
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Copyright Info: Open Access article
Depositing User: Matthew Smith
Date Deposited: 20 Jul 2017 10:49
Last Modified: 20 Jul 2017 10:49
URI: https://eprints.worc.ac.uk/id/eprint/5723

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