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| Titel |
From South to North: flowering phenological responses at different geographical latitudes in 12 European countries |
| VerfasserIn |
Barbara Szabó, Annamária Lehoczky, Peter Filzmoser, Matthias Templ, Ferenc Szentkirályi, Rita Pongracz, Thomas Ortner, Can Mert, Bálint Czúcz |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250094104
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| Publikation (Nr.) |
 EGU/EGU2014-9489.pdf |
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| Zusammenfassung |
| Phenological sensitivity of plants strongly depends on regional climate variability, moreover
it is also influenced by large-scale atmospheric circulation patterns. Plants in different
environmental conditions (determined by geographical latitude and longitude, altitude,
continentality) may show diverse responses to climate change.
The first results of an international cooperation aiming at the analysis of plant
phenological data along a latitudinal gradient over 12 European countries (Macedonia,
Bosnia and Herzegovina, Montenegro, Slovenia, Croatia, Hungary, Slovakia, Poland,
Lithuania, Latvia, Estonia and Finland) are presented. The spatio-temporal changes in the
flowering onset dates of common lilac (Syringa vulgaris L.) during the period of 1970-2000
were analysed. To characterise the environmental conditions driving the phenological
responses, climatic variables (atmospheric pressure, air temperature, precipitation) obtained
from a gridded observational dataset (E-OBS 9.0) and time series of the North Atlantic
Oscillation (NAO) index were used.
Preliminary results for this particular species found a gradual advance of mean flowering
onsets along latitudes from 40°N to 65°N, at the rate of –0.12 to –0.32 day/year. Significant
zonal differences were found in these rates, which can be explained by the sensitivity of
flowering to climatic conditions while moving from Mediterranen to boreal regions of
Europe. Thus our results were coherent with most observations in the literature, that higher
latitudes can exhibit more pronounced responses, particularly in case of spring phenological
events. |
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