Pollen season of European beech (Fagus sylvatica L.) and temperature trends at two German monitoring sites over a more than 30-year period
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Although beech (Fagus) pollen are often disregarded, they play an allergological role. This study focused on pollen season (PS) of European beech (Fagus sylvatica L.) and mean yearly temperatures (T) at two climatically different sites (lowlands vs. Alps) in Germany. Pollen sampling was conducted with 7-day recording volumetric spore traps between 1982 and 2014. Both PS parameters (start, peak, length, annual pollen index [PI]) and T were compared in two periods (1982–1991 and 1992–2014), and correlations between PS and T were analysed. At both sites, average PS occurred earlier in the second period. Statistically significant differences were proved at the alpine site in terms of start and peak of the season, and PI. On average, PS in the lowlands was shorter and occurred earlier than in the Alps. As is the case with a lot of temperate tree species, beeches show the masting phenomenon and PI differed greatly among the years. Mast years were much less frequent than non-mast years, and the differences between the pollen sums were significant. Average pollen counts at the alpine site were about three times higher than in the lowlands. At both sites, higher T was significantly correlated with an earlier start and peak of the season, and an increased PI. Trends of T over the years were significantly positive. Temperature increase as a part of climate change may contribute to an earlier occurrence of the flowering season of European beech and to higher airborne pollen concentrations.
KeywordsFagussylvatica Beech pollen Pollen season Annual pollen index Mast year Climate change
The authors are grateful to the sponsors of the monitoring site in Oberjoch, by name “Alpenklinik Santa Maria”, Bad Hindelang-Oberjoch, Germany, and “Bad Hindelang Tourismus”, Bad Hindelang, Germany. For critical review and advice, we thank Dr. Mücke, Federal Environment Agency, Berlin, Germany.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Dahl, Ǻ., Galán, C., Hajkova, L., Pauling, A., Sikoparija, B., Smith, M., & Vokou, D. (2013). The Onset, Course and Intensity of the Pollen Season. In M. Sofiev & K.-C. Bergmann (Eds.), Allergenic pollen: A review of the production, release, distribution and health impacts (pp. 29–70). Dordrecht: Springer.CrossRefGoogle Scholar
- European Environmental Agency (EEA) (2012). Climate change, impacts and vulnerability in Europe 2012. EEA-Report No 12, Copenhagen.Google Scholar
- Hecht, R. (1994). 3. Europäisches Pollenflug-Symposium - Bad Lippspringe - Vorträge und Berichte. In K.-C. Bergmann, Stiftung Deutscher Polleninformationsdienst (Ed.), Pollenbestimmungstechnik, Ergebniswertung und die Herausgabe von Pollenfluginformationen (pp. 21–32). Düsseldorf: Vereinigte Verlagsanstalten GmbH.Google Scholar
- https://bwi.info; 77V1PI_L637mf_0212_bi
- Kovats, R. S., Valentini, R., Bouwer, L. M., Georgopoulou, E., Jacob, D., Martin, E., Rounsevell, M., & Soussana, J.-F. (2014). Europe. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part B: Regional Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Barros, V. R., Field, C. B., Dokken, D. J., Mastrandrea, M. D., Mach, K. J., Bilir, T. E., Chatterjee, M., Ebi, K. L., Estrada, Y. O., Genova, R. C., Girma, B., Kissel, E. S., Levy, A. N., MacCracken, S., Mastrandrea, P. R., & White, L.L. (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1267–1326.Google Scholar
- Niedersächsisches Ministerium für Ernährung, Landwirtschaft und Forsten. (1999). Der Hasbruch - Naturkundliche Beschreibung eines norddeutschen Waldes. Schriftenreihe Waldentwicklung in Niedersachsen, Heft 8, S. 43, Wolfenbüttel (in German).Google Scholar
- Polley, H., & Kroiher, F. (2006). Struktur und regionale Verteilung des Holzvorrates und des potenziellen Rohholzaufkommens in Deutschland im Rahmen der Clusterstudie Forst- und Holzwirtschaft. Arbeitsbericht des Instituts für Waldökologie und Waldinventuren 2006/3. Bundesforschungsanstalt für Forst- und Holzwirtschaft Hamburg, Eberswalde.Google Scholar
- Schmidt, W. (2006). Temporal variation in beech masting (Fagus sylvatica L.) in a limestone beech forest (1981–2004). Allgemeine Forst und Jagdzeitung, 177, 9–19. (in German with English summary).Google Scholar
- Sykes, M. T., Prentice, I. C., & Cramer, W. (1996). A bioclimatic model for the potential distributions of north European tree species under present and future climates. Journal of Biogeography, 23(2), 203–233.Google Scholar
- Wiebicke, K., Schlenvoigt, G., & Jäger, L. (1987). Allergologic-immunochemical study of various tree pollens. I. Characterization of antigen and allergen components in birch, beech, alder, hazel and oak pollens. Allergie und Immunologie (Leipz), 33(3), 181–190.Google Scholar