Length of vegetation period as parameter of common oak (Quercus robur L.) phenological variability

Batos, Branislava; Ninic-Todorovic, J.

doi:10.2298/gensr1201139b

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…The published paper showed that pedunculate oak is a highly variable species (Kesić et al 2021). Also, their variability in vegetation dynamics was observed (Batos et al 2012). Kostić et al (2021b) analyzed in the common garden experiment early, typical, and late pedunculate oak phenological variety and observed differences in radial growth pattern, drought-sensitiveness, and recovery potential.…”

Section: Forest Ecology and Growthmentioning

confidence: 98%

Climate change within Serbian forests: Current state and future perspectives

Stojanović¹,

Orlović²,

Zlatković³

et al. 2021

Topola

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Extreme weather conditions, namely droughts, heat waves, heavy rains, floods, and landslides are becoming more frequent globally and in Serbia as a result of climate change. Generally, various parts of human society are affected by changing climate conditions. Forest ecosystems are one of the most sensitive systems to weather and climate. In that sense, small changes may lead to large disturbances including forest decline, outbreaks of insect pests and diseases and eventually mortality. In Serbia, the average temperature in forest ecosystems of the most important and abundant forest tree species has risen for more than 1°C in the last thirty years (1990-2019) in comparison to the previous period (1961-1990). During the last thirty years, the northern and western parts of Serbia experienced an increase in precipitation as opposed to the southern and eastern parts of the country. If one takes a closer look at the climate within a particular forest stands, it would seem that the effect of precipitation decrease is stronger in less humid parts of a tree species range. In this paper, we discuss various aspects of climate change impacts on forests and forestry, including forest ecology, genetics, physiology, pests and diseases, ground vegetation, monitoring, reporting and verification system, climate change litigation and perspectives of forests in the 21st century in Serbia.

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Section: Forest Ecology and Growthmentioning

confidence: 98%

Climate change within Serbian forests: Current state and future perspectives

Stojanović¹,

Orlović²,

Zlatković³

et al. 2021

Topola

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“…Furthermore, a later cambial reactivation in Pedunculate oak, in the second half of April and the beginning of May, was observed in central Germany, Denmark and eastern Europe (Vikhrov 1954;Pukacka 2006). The date of cambial reactivation, which is determined by thermal conditions in early spring, can vary a lot in oak trees ( _ Zelawski 1954;Ermich 1959;Batos et al 2012). This relationship was confirmed by the research on cambial activity in Q. orange time between bud swelling and bud break; brown time between bud break and leaf expanding; grey time between leaf expanding and full development; dark blue period of the first row of earlywood-vessel formation; light blue time between the complete development of the first row of earlywood vessels and entire earlywood part; black square codominant tree, grey square subdominant tree; black circle tree stand, grey circle gap in tree stand.…”

Section: Xylogenesis During the 2014 Growing Seasonmentioning

confidence: 99%

Does tree-ring formation follow leaf phenology in Pedunculate oak (Quercus robur L.)?

et al. 2017

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We monitored leaf phenology and xylogenesis of 12 Pedunculate oaks in northern Poland in 2014. We hypothesized that the individual trees, which differed in size, age and habitat (tree stand or gap), also diverged in terms of the seasonal patterns of leaf phenology and xylogenesis. The samples used for wood formation observations were collected most frequently during the early leaf phenophases (from March to end of June). The transverse sections of the cambial region were cut with a sledge microtome. We counted the number of cambial cells, measured the width of xylem increment and assessed the timing of xylogenesis and earlywood-vessel formation. We found significant differences in leaf phenology and timing of xylogenesis among individual trees. The smallest differences in wood formation among the trees were observed at the beginning of the vegetation season when the first earlywood vessels were detected (9 days). The dates of completion of the first tangential row of earlywood vessels varied by up to 30 days, while for the completion of the entire earlywood dates varied by up to 32 days. The highest productivity of cambial cells (13 cell layers) was observed around the time of bud swelling at mid-April. In the last days of April, the number of cambial cell layers decreased and subsequently increased again when the leaves were nearly fully expanded at the end of May. To summarize, we observed a high seasonal variability in the number of cambial cell layers. Differences in the time of cessation of cambial activity and xylogenesis amounted to 1 month. We conclude that: (1) oak tree-ring widths and earlywoodvessel sizes and numbers may not be sensitive indicators for early spring temperature and spring defoliation; (2) the missing association between leaf phenophases and xylogenesis as well as the phenological variability may be the reasons for the lack of a clear climatic effect on the abovementioned parameters.

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“…praecox and a late Q. robur fo. tardifolia —has been observed (Vikhrov 1954 ; Kleinschmit 1993 ; Rubtsov 1996 ; Wesołowski and Rowiński 2008 ; Batos et al 2012 ; Bobinac et al 2012 ). It should also be noted here that phenological phases can follow diverse patterns in subsequent growing seasons (Ermich 1959 ).…”

Section: Discussionmentioning

confidence: 99%

Did the late spring frost in 2007 and 2011 affect tree-ring width and earlywood vessel size in Pedunculate oak (Quercus robur) in northern Poland?

et al. 2015

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Trees are sensitive to extreme weather and environmental conditions. This sensitivity is visible in tree-ring widths and cell structure. In our study, we hypothesized that the sudden frost noted at the beginning of May in both 2007 and 2011 affected cambial activity and, consequently, the number and size of vessels in the tree rings. It was decided to test this hypothesis after damage to leaves was observed. The applied response function model did not show any significant relationships between spring temperature and growth. However, this method uses average values for long periods and sometimes misses the short-term effects. This is why we decided to study each ring separately, comparing them with rings unaffected by the late frost. Our study showed that the short-term effect of sudden frost in late spring did not affect tree rings and selected cell parameters. The most likely reasons for this are (i) cambial activity producing the earlywood vessels before the occurrence of the observed leaf damage, (ii) the forest micro-climate protecting the trees from the harsh frost and (iii) the temperature decline being too short-lived an event to affect the oaks. On the other hand, the visible damage may be occasional and not affect cambium activity and tree vitality at all. We conclude that oak is well-adapted to this phenomenon.Electronic supplementary materialThe online version of this article (doi:10.1007/s00484-015-1107-6) contains supplementary material, which is available to authorized users.

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Length of vegetation period as parameter of common oak (Quercus robur L.) phenological variability

Cited by 5 publications

References 17 publications

Climate change within Serbian forests: Current state and future perspectives

Climate change within Serbian forests: Current state and future perspectives

Does tree-ring formation follow leaf phenology in Pedunculate oak (Quercus robur L.)?

Did the late spring frost in 2007 and 2011 affect tree-ring width and earlywood vessel size in Pedunculate oak (Quercus robur) in northern Poland?

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