Flowering phenological changes in relation to climate change in Hungary

• Published in: International journal of biometeorology Vol. 60; no. 9; pp. 1347 - 1356
• Main Authors: Szabó, Barbara, Vincze, Enikő, Czúcz, Bálint
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2016; Springer Nature B.V
• Subjects: Animal Physiology; Biological and Medical Physics; Biophysics; Climate Change; Climate change monitoring; Climate monitoring; Earth and Environmental Science; Environment; Environmental Health; Environmental impact; Flowers & plants; Flowers - growth & development; Hungary; Magnoliopsida - growth & development; Meteorology; Original Paper; Phenology; Plant Physiology; Plant species; Seasons; Temperature; Hungary; AN, North Atlantic, North Atlantic Oscillation; Precipitation; Central Europe; Beginning of flowering; Spring phenology; North Atlantic Oscillation; Long-term effects
• ISSN: 0020-7128; 1432-1254
• DOI: 10.1007/s00484-015-1128-1

The importance of long-term plant phenological time series is growing in monitoring of climate change impacts worldwide. To detect trends and assess possible influences of climate in Hungary, we studied flowering phenological records for six species ( Convallaria majalis , Taraxacum officinale , Syringa vulgaris , Sambucus nigra , Robinia pseudoacacia , Tilia cordata ) based on phenological observations from the Hungarian Meteorological Service recorded between 1952 and 2000. Altogether, four from the six examined plant species showed significant advancement in flowering onset with an average rate of 1.9–4.4 days per decade. We found that it was the mean temperature of the 2–3 months immediately preceding the mean flowering date, which most prominently influenced its timing. In addition, several species were affected by the late winter (January–March) values of the North Atlantic Oscillation (NAO) index. We also detected sporadic long-term effects for all species, where climatic variables from earlier months exerted influence with varying sign and little recognizable pattern: the temperature/NAO of the previous autumn (August-December) seems to influence Convallaria , and the temperature/precipitation of the previous spring (February–April) has some effect on Tilia flowering.