Impact of Temperature and Wetness of Summer Months on Autumn Vegetative Phenological Phases of Selected Species in Fageto-Quercetum in the Years 2011-2015

Škvareninová, Jana; Babálová, Darina; Valach, Ján; Snopková, Zora

doi:10.11118/actaun201765030939

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…Although the longest single HW occurred in 1994 at KC_570 when maximum daily above-normal temperatures was 20 days in a row, the strongest HW of all was that in 2015 with more than 30 days in HWs over the summer season ( Figure 5). In 2015, the large temperature extremes of the HW induced earlier senescence in numerous tree species in Central Europe, especially Slovakia and the Czech Republic [66,67]. A potential negative effect of HW is the decrease of net photosynthesis [68] and the alteration of long-term continental carbon balances [69].…”

Section: Discussionmentioning

confidence: 99%

Autumn Phenological Response of European Beech to Summer Drought and Heat

Lukasová

Vido

Škvareninová

et al. 2020

Water

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The changes in precipitation and temperature regimes brought on by the current climate change have influenced ecosystems globally. The consequences of climate change on plant phenology have been widely investigated during the last few years. However, the underlying causes of the timing of autumn phenology have not been fully clarified yet. Here, we focused on the onset (10%) of leaf colouring—LCO—(Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie (BBCH) 92) of European beech (Fagus sylvatica, L.) as an important native tree species growing throughout Europe. Studied beech stands are located along the natural distribution range of the European beech in Western Carpathians (Slovakia) at different altitudes from lowlands (300 m a.s.l.) to uplands (1050 m a.s.l.) and climatic regions from warm to cold. To define limiting climate conditions for LCO, we established several bioclimatic indices as indicators of meteorological drought: climatic water balance (CWB), standardized precipitation index (SPI), standardized precipitation-evapotranspiration index (SPEI), dry period index (DPI), and heat waves (HW). In addition, meteorological variables such as monthly mean temperatures and precipitation totals were taken into account. Throughout the 23-year period (1996–2018) of ground-based phenological observations of temperate beech forests, the timing of LCO was significantly delayed (p ≤ 0.05) in the middle to high altitudes, while in the lowest altitude, it remained unchanged. Over the last decade, 2009–2018, LCO in middle altitudes started at comparable to low altitudes and, at several years, even later. This resulted mainly from the significant negative effect of drought prior to this phenological phase (p ≤ 0.01) expressed through a 1-month SPI in September (SPIIX) at the stand at the low-altitude and warm-climatic region. Our results indicate that the meteorological drought conditioned by lower total precipitation and higher evapotranspirative demands in the warmer climate advance leaf senescence. However, at present time, growth in rising temperature and precipitation is acceptable for most beech stands at middle to high altitudes. Beech utilizes these conditions and postpones the LCO by 0.3–0.5 and 0.6–1.2 day per year at high and middle altitudes, respectively. Although we show the commencing negative effect of drought at mid-altitudes with lower (below 700 mm) total annual precipitation, the trend of LCO in favourable warm climates is still significantly delayed. The ongoing warming trend of summer months suggests further intensification of drought as has started to occur in middle altitudes, spreading from the continual increase of evapotranspiration over the next decades.

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Section: Discussionmentioning

confidence: 99%

Autumn Phenological Response of European Beech to Summer Drought and Heat

Lukasová

Vido

Škvareninová

et al. 2020

Water

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“…Although this drought impact assessment has been also carried out, ecological aspects of drought occurrence have been analyzed byŠustek and Vido [35,36], drought impacts on forest ecosystems were analyzed by Nalevanková et al [37] andŠkvareninová et al [38], and application of the SPI in forest drought assessment was carried out by Vido et al [39].…”

Section: Introductionmentioning

confidence: 99%

Drought Analyses of the Horné Požitavie Region (Slovakia) in the Period 1966–2013

Vido

Nalevanková

Valach

et al. 2019

Advances in Meteorology

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This study focuses on the characterization of historical drought occurrences in the Horné Požitavie region of Slovakia over the period 1966–2013 using Standardized Precipitation-Evapotranspiration Index (SPEI). Trend analyses were evaluated by the Mann–Kendall (MK) test as well as cumulative sum of rank difference (CRD) test. The results showed that drought occurs in the region regularly (recurrent climate feature), while the trend analysis indicated the trend toward more arid climatic conditions. However, CRD trend analyses showed that the subtrend changed direction toward less drier conditions in the late 1980s and early 1990s. Analyses of SPEI trends in individual months showed a decreasing trend of drought occurrences during the cold months of the year (i.e., October to March), while an increasing trend was indicated from April to August. The evaluation of the impact of drought on agricultural production based on the oilseed rape yield indicated that drought represents a significant natural risk for the agrarian sector of the region. In addition, August value of the SPEI for six months was evaluated as a good indicator of drought impacts on agriculture. The trend analyses revealed no significant increase of drought impacts on agricultural production within the studied period.

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Significant phenological response of forest tree species to climate change in the Western Carpathians

Mrekaj,

Lukasová,

Rozkošný

et al. 2024

Central European Forestry Journal

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This study aims to analyse the phenological dynamics of tree species in response to changes in climatic conditions over the last two climate-normal periods (CLINO 1961−1990 and 1991−2020). We focused on the main climax tree species (Quercus species, Fagus sylvatica L., Abies alba Mill., Picea abies [L.] Karst., and Pinus mugo Turra) dominating eight altitudinal forest vegetation zones (FVZ) and alluvial forests of Western Carpathians and adjacent lowlands in Central Europe. The phenological phases analysed in this study were first leaf (BBCH11) and general leaf colouring (BBCH94) for deciduous species, and the onset of new shoots (BBCH10) for evergreen conifers. The results of partial correlations confirmed that temperature is the main driving factor explaining the shifted onset of phenological phases for the species considered. Furthermore, deciduous species growing in the lower (and warmer) FVZ showed a certain level of drought sensitivity related to the earlier BBCH94. The identified trends in phenology were species-specific and differed between the individual FVZs. The most pronounced shifts toward the earlier BBCH10 and BBCH11 were found in the upper FVZ of the vertical distribution range of species. The presented results will support our understanding of the mechanisms underlying environmental control of tree phenology. This is crucial for predicting how the growing season of trees will be constrained by climate change-induced conditions in individual FVZ.

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Impact of Temperature and Wetness of Summer Months on Autumn Vegetative Phenological Phases of Selected Species in Fageto-Quercetum in the Years 2011-2015

Cited by 3 publications

References 22 publications

Autumn Phenological Response of European Beech to Summer Drought and Heat

Autumn Phenological Response of European Beech to Summer Drought and Heat

Drought Analyses of the Horné Požitavie Region (Slovakia) in the Period 1966–2013

Significant phenological response of forest tree species to climate change in the Western Carpathians

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