Growth responses of sessile oak to climate and hydrological regime in the Zbytka Nature Reserve, Czech Republic

Čejková, Alžběta; Poláková, Simona

doi:10.2478/s13386-012-0017-1

Cited by 7 publications

(4 citation statements)

References 44 publications

(39 reference statements)

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“…The weakening of the relationship between non-adjusted RWI from Lis and temperature in May has been earlier considered attributed to the known warming trend and lowering of the evaporation demand, although no linear trend has been found for precipitation in Kyiv (Netsvetov et al, 2018). The positive correlation with temperature has been also reported in other studies of flooded areas (Hafner et al, 2015; Tumajer and Treml, 2016) and areas without water deficiency (Ğejková and Polákova, 2012; Tumajer and Treml, 2017), although neither of these works has considered the effect of hydrology modification.…”

Section: Discussionsupporting

confidence: 62%

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River Regulation Causes Rapid Changes in Relationships Between Floodplain Oak Growth and Environmental Variables

et al. 2019

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The radial growth of pedunculate oak (Quercus robur), a species often ecologically dominating European deciduous forests, is closely tied up with local environmental variables. The oak tree-ring series usually contain a climatic and hydrologic signal that allows assessing the main drivers of tree growth in various ecosystems. Understanding the climate-growth relationship patterns in floodplains is important for providing insights into the species persistence and longevity in vulnerable riverine ecosystems experiencing human-induced hydrology alteration. Here, we use 139 years long instrumental records of local temperature, precipitation, and water levels in the Dnipro River in Kyiv to demonstrate that the implementation of river regulation has decoupled the established relationship between the radial growth of floodplain oak and local hydro-climatic conditions. Before the river flow has been altered by engineering modifications of 1965–1977, the water level in the Dnipro River was the key driver of oak radial growth, as reflected in the tree-ring width and earlywood width. The construction of two dams has altered the seasonal distribution of water level diminishing the positive effect of high water on oak growth and subsequently reversing this trend to negative, resulting from a seasonal ground water surplus. The decrease in the correlation between oak growth indices and the river’s water level in April–June was unprecedentedly rapid and clearly distinguishable among other changes in the growth-to-climate relationship. Our findings further demonstrate that trees growing in areas exposed to urban development are the most susceptible to downside effects of river regulation.

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Section: Discussionsupporting

confidence: 62%

“…George and Nielsen, 2003; Kames et al, 2016; Koprowski et al, 2018). Even fewer works have looked into the impact of hydrology modifications on growth of floodplain trees and its relationships with environmental drivers (Predick et al, 2009; Ğejková and Polákova, 2012; Stella et al, 2013; Gee et al, 2014; Weissbrod and Binder, 2017).…”

Section: Introductionmentioning

confidence: 99%

River Regulation Causes Rapid Changes in Relationships Between Floodplain Oak Growth and Environmental Variables

et al. 2019

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“…Tree growth in floodplain forests also decreases when the underground water level is reduced through water pumping [13] or due to rising groundwater table and waterlogging [14,15]. These growth responses have been extensively studied in native species such as the pedunculate oak (Quercus robur L.; hereafter oak) [12,16,17], but retrospective information regarding the responses of introduced species to drought is scarce in their invaded areas.…”

Section: Introductionmentioning

confidence: 99%

Drought Decreases Growth and Increases Mortality of Coexisting Native and Introduced Tree Species in a Temperate Floodplain Forest

Colangelo

Camarero

Ripullone

et al. 2018

Forests

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Forest dieback and mortality events induced by drought stress are widely reported. However, few studies have jointly examined the role played by drought on growth and mortality in tree species inhabiting floodplain forests. Here, we focused on mortality events occurring since the early 2000s on large areas in a floodplain forest located within the Ticino regional park in Northwest Italy, where affected native (pedunculate oak, Quercus robur L.) and introduced tree species (black locust, Robinia pseudoacacia L.) coexist. We related growth with climate data and drought severity to discern if these species were similarly affected by drought. Then, we: (i) evaluated the presence of pathogens of the genus Phytophthora in recently dead oak trees since this was the most affected species and pathogens are often associated with oak decline cases; and (ii) compared xylem vessel diameter and tree-ring C isotope discrimination (δ 13 C) to highlight differences in water-use strategies between living and dead trees in both species. The radial growth of living and dead trees started diverging in the 1970s, although only after warm-drought periods occurred during 1990s did this divergence become significant. Growth of trees that died responded more negatively to drought than in the case of living trees. Moreover, trees that died formed smaller xylem vessels in the past than living trees and also showed more negative δ 13 C values in both tree species, indicating a higher intrinsic water-use efficiency in living than in dead trees. The pathogen Phytophthora cinnamomi Rands was only detected in one recently dead tree, suggesting that it is unlikely that dead oaks were predisposed to drought damage by the pathogen. We conclude that a climate shift from wet to warm-dry summer conditions in the early 1990s triggered forest dieback and induced mortality in both tree species. Temperate floodplain forests are susceptible to drought-induced dieback. The drought-sensitivity of both species could lead to successional shifts driven by a reduction of N inputs through N-fixing by black locust and the replacement of oak by drought-tolerant species.

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“…Up to this point, oak tree-ring research in the Czech Republic has not been given sufficient attention, and the only available studies are recent. Some of the studies that do exist have addressed the following: wood increments during a growing season in a floodplain for English oak (Horáček et al, 2003); the effects of climate on the formation of early-and latewood, with tree-ring width and oak wood density determined using both English and sessile oak in south Moravia (Doležal et al, 2010;Vavrčík and Gryc, 2012); the growth response of sessile oak to climate and hydrology changes in the Zbytka Nature Reserve (Čejková and Poláková, 2012); and the creation of an oak tree-ring chronology for the Czech Republic . However, this oak tree-ring chronology does not have sufficient sample depth of treering series in the most recent period, i.e.…”

Section: Introductionmentioning

confidence: 99%

Exploring Growth Variability and Crown Vitality of Sessile Oak (Quercus Petraea) in the Czech Republic

et al. 2015

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Unraveling climatic effects on growth of oak -Europe's most ecologically and economically important forest species -has been the subject of many recent studies; however, more insight based on field data is necessary to better understand the relationship between climate and tree growth and to adapt forest management strategies to future climate change. In this report, we explore the influence of temperature, precipitation and drought variability on the productivity and vitality of oak stands in the Czech Highlands. We collected 180 cores from mature oaks (Quercus petraea) at four forest stands in the Czech Drahany Highlands. Standard dendro-methods were used for sample preparation, ring width measurements, cross-dating, chronology development, and the assessment of growth-climate response patterns. Crown vitality was also evaluated, using the modified ICP Forests methodology. Late spring precipitation totals between May and June as well as the mean July temperature for the year of ring formation were found to be the most important factors for oak growth, whereas crown condition was significantly affected by spring and summer drought. This study is representative for similar bio-ecological habitats across Central Europe and can serve as a dendroclimatological blueprint for earlier periods for which detailed meteorological information is missing.

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Growth responses of sessile oak to climate and hydrological regime in the Zbytka Nature Reserve, Czech Republic

Cited by 7 publications

References 44 publications

River Regulation Causes Rapid Changes in Relationships Between Floodplain Oak Growth and Environmental Variables

River Regulation Causes Rapid Changes in Relationships Between Floodplain Oak Growth and Environmental Variables

Drought Decreases Growth and Increases Mortality of Coexisting Native and Introduced Tree Species in a Temperate Floodplain Forest

Exploring Growth Variability and Crown Vitality of Sessile Oak (Quercus Petraea) in the Czech Republic

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