Phenological reactions of perennial plants to climate change in Western Siberia
E. S. Fomin1, T. I. Fomina2
1Institute of Cytology and Genetics of SB RAS, Novosibirsk, Russia
2Central Siberian Botanical Garden of SB RAS, Novosibirsk, Russia
Keywords: climate changes, phenological trends, ecological groups, perennials, Western Siberia
Abstract
The results on the phenology study of 78 species of perennial plants over 20-year period 1996-2015 in the Western Siberia forest-steppe are discussed. Against the background of the detected meteorological trends of the warm season in Novosibirsk, the timing shift in phenological events of individual species and their ecological groups were analyzed using linear trends. It was found that vegetation start in the vast majority of perennials delayed on +3 … +7 days, and the terms of vegetation end changed differently within -4 … +1 days, while the duration of vegetation decreased in all groups. The duration of prefloral period significantly decreased by -6 … -9 days, due to the later vegetation start and an earlier start of flowering on -1 … -2 days. Fruiting trends are differed in direction and magnitude. The rate of seasonal development of the species generally accelerated over the observation period. Trends describe 6-32 % of phenological changes in ecological groups.
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