Transpiration and water potential of young Quercus petraea (M.) Liebl. coppice sprouts and seedlings during favourable and drought conditions

Stojanović, Marko; Szatniewska, Justyna; Kyselová, Ina; Pokorný, Radek; Čater, Matjaž

doi:10.17221/36/2017-jfs

Cited by 20 publications

(3 citation statements)

References 43 publications

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“…Under ongoing climate changes, more frequent and severe drought periods are expected ( Williams et al., 2013 ). In fact, several extreme droughts and heat waves occurred in the last 25 years, including the studied year of 2015, which was one of the worst droughts recorded in Central and Eastern Europe ( Van Lanen et al., 2016 ; Stojanović et al., 2017b ). There is growing evidence that increasing climatic pressure on forest ecosystems, especially drought-related, causes widespread Norway spruce decline.…”

Section: Introductionmentioning

confidence: 99%

Sap flow and growth response of Norway spruce under long-term partial rainfall exclusion at low altitude

et al. 2023

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IntroductionUnder ongoing climate change, more frequent and severe drought periods accompanied by heat waves are expected in the future. Under these conditions, the tree’s survival is conditioned by fast recovery of functions after drought release. Therefore, in the presented study, we evaluated the effect of long-term water reduction in soil on tree water use and growth dynamics of Norway spruce.MethodsThe experiment was conducted in two young Norway spruce plots located on suboptimal sites at a low altitude of 440 m a.s.l. In the first plot (PE), 25% of precipitation throughfall was excluded since 2007, and the second one represented the control treatment with ambient conditions (PC). Tree sap flow, stem radial increment, and tree water deficit were monitored in two consecutive growing seasons: 2015-2016, with contrasting hydro-climatic conditions.ResultsTrees in both treatments showed relatively isohydric behavior reflected in a strong reduction of sap flow under the exceptional drought of 2015. Nevertheless, trees from PE treatment reduced sap flow faster than PC under decreasing soil water potential, exhibiting faster stomatal response. This led to a significantly lower sap flow of PE, compared to PC in 2015. The maximal sap flow rates were also lower for PE treatment, compared to PC. Both treatments experienced minimal radial growth during the 2015 drought and subsequent recovery of radial growth under the more the humid year of 2016. However, treatments did not differ significantly in stem radial increments within respective years.DiscussionPrecipitation exclusion treatment, therefore, led to water loss adjustment, but did not affect growth response to intense drought and growth recovery in the year after drought.

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Section: Introductionmentioning

confidence: 99%

Sap flow and growth response of Norway spruce under long-term partial rainfall exclusion at low altitude

et al. 2023

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“…Moreover, natural or artificial regeneration of oaks is threatened by numerous factors [34] which include the performance of the oak species and the environmental conditions [34,35]. Oak seedlings are especially vulnerable during the first years after establishment or germination [36][37][38], when plant survival is very dependent to attacks by pests and pathogens [39][40][41]. English oak (Quercus robur L.), an ecologically and economically important species in temperate and sub-Mediterranean forests, is threatened by Phytophthora root rot [42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Growth Rates of Lymantria dispar Larvae and Quercus robur Seedlings at Elevated CO2 Concentration and Phytophthora plurivora Infection

Milanović

Milenković

Dobrosavljević

et al. 2020

Forests

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Interactions between plants, insects and pathogens are complex and not sufficiently understood in the context of climate change. In this study, the impact of a root pathogen on a leaf-eating insect hosted by a tree species at elevated CO2 concentration is reported for the first time. The combined and isolated effects of CO2 and infection by the root pathogen Phytophthora plurivora on English oak (Quercus robur) seedlings were used to assess growth rates of plants and of gypsy moth (Lymantria dispar) larvae. For this purpose, two Q. robur provenances (Belgrade and Sombor) were used. At ambient CO2 concentration, the relative growth rate of larvae consuming leaves of plants infected by P. plurivora was higher than those consuming non-infected plants. However, at elevated CO2 concentration (1000 ppm) higher relative growth rates were detected in the larvae consuming the leaves of non-infected plants. At ambient CO2 concentration, lower growth rates were recorded in L. dispar larvae hosted in Q. robur from Belgrade in comparison to larvae hosted in Q. robur from Sombor. However, at elevated CO2 concentration, similar growth rates irrespective of the provenance were observed. Defoliation by the gypsy moth did not influence the growth of plants while P. plurivora infection significantly reduced tree height in seedlings from Belgrade. The results confirm that a rise of CO2 concentration in the atmosphere modifies the existing interactions between P. plurivora, Q. robur, and L. dispar. Moreover, the influence of the tree provenance on both herbivore and plant performance at elevated CO2 concentrations suggests a potential for increasing forest resilience through breeding.

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“…Coppicing has recently become more popular, as it provides a renewable source of energy (biomass and firewood), promotes higher biodiversity, and provides an adaptation of forest management to climate change [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Development of Sessile Oak and European Hornbeam Sprouts after Thinning

Adamec

Kadavý

Fedorová

et al. 2017

Forests

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Abstract:We observed the growth of juvenile sprouts at stool level in an oak-hornbeam selective coppice after selective thinning. We tested the relations of sprouting probability, number and height of new sprouts, and stool biometric characteristics with thinning intensity and light conditions. We compared the results between the two species. The sprouting probability, number of new sprouts, and height of new sprouts were modelled using different types of regression (logistic, generalized linear, and multiple linear regression) evaluated from 84 sessile oak (Quercus petraea Matt. Liebl.) and 139 European hornbeam (Carpinus betulus L.) stools with the same site conditions. There were no significant relations between sprouting probability and the tested parameters because nearly all stools re-sprouted. The growth (number and height) of new sprouts depended on the stool basal area before thinning and on thinning intensity. Light conditions (indirect site factor) only influenced the number of new European hornbeam sprouts in 2016 and the height of new sessile oak sprouts. The number of new sprouts in European hornbeam was higher than in sessile oak.

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Transpiration and water potential of young Quercus petraea (M.) Liebl. coppice sprouts and seedlings during favourable and drought conditions

Cited by 20 publications

References 43 publications

Sap flow and growth response of Norway spruce under long-term partial rainfall exclusion at low altitude

Sap flow and growth response of Norway spruce under long-term partial rainfall exclusion at low altitude

Growth Rates of Lymantria dispar Larvae and Quercus robur Seedlings at Elevated CO2 Concentration and Phytophthora plurivora Infection

Development of Sessile Oak and European Hornbeam Sprouts after Thinning

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