Phenological pattern of leaf-fall phenophase in Quercus robur L. populations of the Belgrade area
Our study of phenological variability in the common oak (Quercus robur L.) was mainly focused on the analysis of the leaf-fall phenophase. The observations were made in two populations in the area of Belgrade (Serbia). We observed 29 trees in each site, during three consecutive years. Accor...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | srp |
| Published: |
Faculty of Forestry, Belgrade
2016-01-01
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| Series: | Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0353-4537/2016/0353-45371614009B.pdf |
| Summary: | Our study of phenological variability in the common oak (Quercus robur L.)
was mainly focused on the analysis of the leaf-fall phenophase. The
observations were made in two populations in the area of Belgrade (Serbia).
We observed 29 trees in each site, during three consecutive years. According
to the results of a nonparametric analysis of Mann-Whitney U test we found
differences in the leaf fall phenophase (the start, the length and the end)
among the populations: statistically significant differences were verified
for the start and the length of the leaf fall in two of three observed years,
and for the end of leaf fall in one observed year. The differences in the
leaf fall within each population among the observed years were verified by
the F-test at the significance level of P < 0.05: statistically significant
differences were found for the start of leaf fall in “Ada Ciganlija”
population, and for the length and the end of leaf fall in both populations.
According to the phenological pattern of population 31% of trees in “Ada
Ciganlija“ population and 24.1% of trees in “Bojčin forest“ population did
not change its phenological group in relation to the start of the leaf fall
(“early“, “average“ and “late“) during three years of observation. Since the
phenological traits are under significant influence of both environmental and
genetic factors, it is very important to evaluate those factors according to
tree differentiation to phenological groups for pedunculate oak selection. An
overview of the pattern of leaf fall phenology and the response to the
changing climatic factors will help in understanding the leaf fall phenology
at the level of an individual and at the level of species. |
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| ISSN: | 0353-4537 2217-8600 |